Progress 06/01/07 to 05/31/12
Outputs
Target Audience:
Nothing Reported
Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?
Nothing Reported
What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Comparison of Growth Patterns in Micropterus dolomieu (Smallmouth Bass) and Hypentelium nigricans (Northern Hogsucker) in two Missouri river Systems I. BACKGROUND Smallmouth Bass (Micropterus dolomieu) normally inhabit the middle of the water column. They feed mainly on bait fish and crayfish. Northern Hogsuckers (Hypentelium nigricans) feed on the bottom where they ingest benthic invertebrates. Both species occupy the Jack's Fork and Current rivers, and co-occur at many sites. Given their different trophic statuses, but similar sizes and body shapes and shared habitat, this study is investigating whether growth in these two species is affected more by "global" productivity (and thus should be similar) than simply by niche partitioning (resulting in contrasting growth trajectories). II. OBJECTIVE The goal of the proposed research is to investigate whether smallmouth bass and northern hogsucker show similar growth patterns and, if so, whether they may be controlled together by ecosystem productivity outside of the rivers. III. APPROACH Growth pattern similarities or differences will be identified using archival back-calculated length-at-age data collected 1978-81. As a preliminary step, graphs will be created and inspected for growth patterning relating to: 1. Species (Smallmouth Bass; Northern Hogsucker) 2. River (Upper Jack's Fork, Lower Jack's Fork; Upper Current, Middle Current, Lower Current) 3. Site in river (Blue Springs to Logyard; Round Springs to Grass Creek, etc.) 4. Year of catch (1978, 1980, 1981) 5. Month of catch (June, July, August, September, October, November) 6. Age at catch (0 yrs. - 11 yrs.) Similarities in growth trajectories between the species for comparable samples will be suggestive of allocthonous energy and biomass inputs being the main systemmic determinant of growth in these species, rather than growth being a determinant of energy/biomass availability within each species' prey base. IV. EXPECTED RESULTS AND INTERPRETATION If the smallmouth bass and northern hogsucker are growing similarly, then the productivity and outside ecosystem of the river may be an important determinant in both species' growth, given their different forage bases and trophic statuses.
Publications
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Progress 01/01/08 to 09/30/08
Outputs
Target Audience:Target audience is conservation professionals with interests in conserving, protecting, re-establishing, and maintaining fish populations in in Missouri lotic ecosystems. Changes/Problems:As faculty numbers have fallen, my efforts have shifted to emphasize teaching. What opportunities for training and professional development has the project provided?This work is being conducted by Ms. Christina Mackey, an upperclass undergraduate student in the Department of Fisheries and Wildlife Sciences in The School of Natural Resources at the University of Missouri-Columbia. How have the results been disseminated to communities of interest?
Nothing Reported
What do you plan to do during the next reporting period to accomplish the goals?Conduct additional analyses that were identified as being necessary during the initial phase of analysis. Work towards publication of the findings.
Impacts
What was accomplished under these goals?
Comparison of Growth Patterns in Micropterus dolomieu (Smallmouth Bass) and Hypentelium nigricans (Northern Hogsucker) in two Missouri river Systems I. BACKGROUND Smallmouth Bass (Micropterus dolomieu) normally inhabit the middle of the water column. They feed mainly on bait fish and crayfish. Northern Hogsuckers (Hypentelium nigricans) feed on the bottom where they ingest benthic invertebrates. Both species occupy the Jack's Fork and Current rivers, and co-occur at many sites. Given their different trophic statuses, but similar sizes and body shapes and shared habitat, this study is investigating whether growth in these two species is affected more by "global" productivity (and thus should be similar) than simply by niche partitioning (resulting in contrasting growth trajectories). II. OBJECTIVE The goal of the proposed research is to investigate whether smallmouth bass and northern hogsucker show similar growth patterns and, if so, whether they may be controlled together by ecosystem productivity outside of the rivers. III. APPROACH Growth pattern similarities or differences will be identified using archival back-calculated length-at-age data collected 1978-81. As a preliminary step, graphs will be created and inspected for growth patterning relating to: Species (Smallmouth Bass; Northern Hogsucker) River (Upper Jack's Fork, Lower Jack's Fork; Upper Current, Middle Current, Lower Current) Site in river (Blue Springs to Logyard; Round Springs to Grass Creek, etc.) Year of catch (1978, 1980, 1981) Month of catch (June, July, August, September, October, November) Age at catch (0 yrs. - 11 yrs.) Similarities in growth trajectories between the species for comparable samples will be suggestive of allocthonous energy and biomass inputs being the main systemmic determinant of growth in these species, rather than growth being a determinant of energy/biomass availability within each species' prey base. IV. EXPECTED RESULTS AND INTERPRETATION If the smallmouth bass and northern hogsucker are growing similarly, then the productivity and outside ecosystem of the river may be an important determinant in both species' growth, given their different forage bases and trophic statuses.
Publications
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Progress 01/01/07 to 12/31/07
Outputs
OUTPUTS: C. Witte's research has tested which combinations of photoperiod and temperature are best for eliciting the reproductive development of endangered Topeka shiners (Notropis topeka). Additional work has determined what substrates Topeka shiners choose to form their breeding territories over. K. Lister's research is investigating the status, distribution, habitat use, and contaminant threats facing Missouri populations of Ozark cavefish (Amblyopsis rosae), another endangered fish species. PARTICIPANTS: C. Witte, graduate student, MU K. Lister, graduate student, MU B. Jones, student, MU Dr. M. Wildhaber, U.S.G.S. TARGET AUDIENCES: In general, I see my research as being foundational in nature - most of the species I work with have been minimally studied, and thus their ecologies, needs, and preferences have not been determined. It is upon such information that management and conservation decisions are ultimately based; consequently, I preceive the end "users" of the research I conduct as typically being either basic ecologists or agency decision-makers vested with making conservation or management decisions. PROJECT MODIFICATIONS: Not relevant to this project.
Impacts
C. Witte's work has established which conditions are most conducive to spawning Topeka shiners in captivity. This is important, given that the species is endangered, and that captive propagation may eventually be necessary to supplement wild populations, or to re-establish extirpated populations. Being able to spawn individuals in the laboratory also provides opportunities for additional study of the species, given that their rarity in nature makes study there problemmatic. Lister's work on Ozark cavefish provides an updated picture of the species distribution and the status of known populations. The species appears to exhibit some within-site habitat preferences; these preferences suggest that certain environmental attributes are more important to their occurrence than are others. The detection of environmental contamination at several sites indicates the need for continued monitoring and increased efforts to prevent contaminant influx into these sites.
Publications
- 1) Jones, B.D., and D.B. Noltie. 2007. Flooded flatheads: evidence of increased growth in Mississippi River Pylodictis olivaris following the Great Flood of 1993. Hydrobiologia 592:183-209 + erratum.
- 2) Witte, C., M. Wildhaber, and D. Noltie. 2007. The effects of temperature and photoperiod on the growth and reproductive development of the Topeka shiner (Notropis topeka). Paper presented at the 134th American Fisheries Society Annual Meeting, San Francisco.
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Progress 01/01/04 to 12/31/04
Outputs
New work with C.Witte is testing what abiotic factors (temperature, photoperiod, substrate) are most conducive to Topeka shiner reproduction in the laboratory. Work with J.Albers has experimentally demonstrated how differing flows impact the reproduction and behavior of the endangered Neosho madtom. With J.Whitaker, we are examining the substrate and food preferences of the endangered pink planarian. With C.Wicks, we are studying how hydrogeological processes influence the distribution and ecology of endangered Missouri cavefishes. With K.Lister, we are conducting in situ studies of Ozark cavefish occurrence and distribution. With P.Carvalho, how dioxin exposure impacts the visual system and behavior on Japanese medaka has been examined. Work with P.Wright is exploring how dioxin exposure and thiamine availability interact to impact the development, behavior, and mortality of lake trout.
Impacts
Ongoing studies in my lab (1) provide an information foundation regarding little-studied non-game and endangered aquatic species upon which informed management and conservation decisions can be made, and (2) use behavioral assays as a means to prompt aquatic organisms to "tell" us how certain environmental conditions are impacting their well-being.
Publications
- Albers, J.L., M.L. Wildhaber, and D.B. Noltie. 2004. Threatened fishes of the world: Noturus placidus Taylor, 1969 (Ictaluridae). Environmental Biology of Fishes 70:80.
- Bryan, J.L., M.L. Wildhaber, and D.B. Noltie. 2005. Examining madtom reproductive biology using ultrasound and simulated photoperiod cycles. North American Journal of Aquaculture. In press.
- Carvalho, P.S.M., D.B. Noltie, and D.E. Tillitt. 2004. Biochemical, histological and behavioural aspects of visual function during early development of rainbow trout. Journal of Fish Biology 64:833-850.
- Carvalho, P.S.M., D.B. Noltie, and D.E. Tillitt. 2004. Intra-strain dioxin sensitivity and morphometric effects in swim-up rainbow trout (Oncorhynchus mykiss). Comparative Biochemistry and Physiology 137C:133-142.
- Aumiller, S.R., and D.B. Noltie. 2003. Chemoreceptive responses of the southern cavefish Typhlichthys subterraneus Girard, 1860 (Pisces, Amblyopsidae) to conspecifics and prey. Subterranean Biology 1:79-92.
- Rahm, E.R., S.A. Griffith, D.B. Noltie, and R.J. DiStefano. 2005. Agonistic interactions between juveniles of an introduced crayfish and two imperiled endemic crayfishes. Crustaceana. In press.
- Bryan, J.L., M.L. Wildhaber, and D.B. Noltie. 2005. Influence of water flow on Neosho madtom Noturus placidus reproductive behavior. The American Midland Naturalist.
- Griffith, S.A., E.J. Rahm, D.B. Noltie, and R.J. DiStefano. 2004. Agonistic interactions between adults of an introduced crayfish and two imperiled endemic crayfishes. Final Report, submitted to the Missouri Department of Conservation and the University of Missouri Department of Fisheries and Wildlife Sciences. 27 pp.
- Rahm, E.J., S.A. Griffith, D.B. Noltie, and R.J. DiStefano. 2004. Agonistic interactions between juveniles of an introduced crayfish and two imperiled endemic crayfishes. Final Report, submitted to the Missouri Department of Conservation and the University of Missouri Department of Fisheries and Wildlife Sciences. 23 pp.
- Bryan, J.L., J.R. Shute, M.L. Wildhaber, P.L. Rakes, and D.B. Noltie. 2004. Culturing imperiled madtoms for conservation. Ecology and Management of Catfishes Symposium, Spring Meeting, Southern Division, American Fisheries Society, Oklahoma City, OK.
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Progress 01/01/03 to 12/31/03
Outputs
New work with C. Witte will be investigating reasons for the decline of the Topeka shiner. Work with J.Albers has experimentally demonstrated how differing flows impact the reproduction and behavior of the endangered Neosho madtom. With J.Whitaker, we are examining the substrate and food preferences of the endangered pink planarian. With C.Wicks, we are studying how hydrogeological processes influence the distribution and ecology of endangered Missouri cavefishes. With K.Lister, we are conducting in situ studies of Ozark cavefish occurrence and distribution. With P.Carvalho, how dioxin exposure impacts the visual system and behavior on Japanese medaka has been examined. Work with P.Wright is exploring how dioxin exposure and thiamine availability interact to impact the development, behavior, and mortality of lake trout.
Impacts
Ongoing studies in my lab (1) provide an information foundation regarding little-studied non-game and endangered aquatic species upon which informed management and conservation decisions can be made, and (2) use behavioral assays as a means to prompt aquatic organisms to "tell" us how certain environmental conditions are impacting their well-being.
Publications
- Papoulias, D.M., S.A. Villalobos, J. Meadows, D.B. Noltie, J.P. Giesy, and D.E. Tillitt. 2003. In ovo exposure to o,p'-DDE affects sexual development but not sexual differentiation in Japanese medaka (Oryzias latipes). Environmental Health Perspectives 111(1):29-32.
- Wright, P.J., D.B. Noltie, and D.E. Tillitt. 2003. Comparison of prehatch C-start responses in rainbow trout and lake trout embryos using a tactile stimulus test. Transactions of the American Fisheries Society 132:989-997.
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Progress 01/01/02 to 12/31/02
Outputs
Work with J.Albers has experimentally demonstrated how differing flows impact the reproduction and behavior of the endangered Neosho madtom. With J.Whitaker, we are examining the substrate and food preferences of the endangered pink planarian. With C.Wicks, we are studying how hydrogeological processes influence the distribution and ecology of endangered Missouri cavefishes. With K.Lister, we are conducting in situ studies of Ozark cavefish occurrence and distribution. With P.Carvalho, how dioxin exposure impacts the visual system and behavior on Japanese medaka has been examined. Work with P.Wright is exploring how dioxin exposure and thiamine availability interact to impact the development, behavior, and mortality of lake trout.
Impacts
Ongoing studies in my lab (1) provide an information foundation regarding little-studied non-game and endangered aquatic species upon which informed management and conservation decisions can be made, and (2) use behavioral assays as a means by which aquatic organisms can "tell" us how certain environmental conditions are impacting organism well-being.
Publications
- Noltie, D.B., and C.W. Wicks. 2002. Pink planaria: fascinating flatworm, endangered endemic. Pp. 180-182 in J.B. Martin, C.M. Wicks, and I.D. Sasowsky (eds.). Hydrogeology and Biology of Post-Paleozoic Carbonate Aquifers. Proceedings of the Symposium on Karst Frontiers: Florida and Related Environments. Special Publication No. 7, Karst Waters Institute Inc., Charles Town, West Virginia. vii + 212 pp.
- Wicks, C.W., and D.B. Noltie. 2002. Variations in the discharge and specific conductance of the spring water in which stygobitic species live. Pp. 183-184 in J.B. Martin, C.M. Wicks, and I.D. Sasowsky (eds.). Hydrogeology and Biology of Post-Paleozoic Carbonate Aquifers. Proceedings of the Symposium on Karst Frontiers: Florida and Related Environments. Special Publication No. 7, Karst Waters Institute Inc., Charles Town, West Virginia. vii + 212 pp.
- Carvalho, P.S.M., D.B. Noltie, and D.E. Tillitt. 2002. Ontogenetic improvement of visual function in the medaka Oryzias latipes based on an optomotor testing system for larval and adult fish. Animal Behaviour 64(1):1-10.
- Strange, K.T., J.C. Vokoun, and D.B. Noltie. 2002. Thermal tolerance and growth differences in orangethroat darter (Etheostoma spectabile) from thermally contrasting adjoining streams. The American Midland Naturalist 148(1):120-128.
- Vokoun, J.C., and D.B. Noltie. 2002. Evidence for the inheritance of alarm substance recognition in johnny darter (Etheostoma nigrum). The American Midland Naturalist 147(2):400-403.
- DiStefano, R.J., J. Young, and D.B. Noltie. 2002. A study of the life history of Orconectes hylas with comparisons to Orconectes peruncus and Orconectes quadruncus in Ozark streams, Missouri, U.S.A. Freshwater Crayfish 13:439-456.
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Progress 01/01/01 to 12/31/01
Outputs
Work with P.Carvalho has determined how exposure to TCDD affects visual function in young rainbow trout (surrogates for Great Lakes lake trout). Work with D.Papoulias has ascertained how exposure to endocrine-disrupting compounds affects the sexual development of young fish, using medaka as a model test species. Work with P.Wright is using a behavioral startle response assay to detect the effects of chemical contaminants on pre-hatch fish embryos. Work with J.Albers has lead to the successful breeding of Neosho madtoms in the laboratory, and has assessed whether and how water flow influences their reproductive behavior. Work with J.Whitaker is testing how cave-dwelling pink planaria feed, respond to conspecifics, and select substrate. Work with K.Lister is assessing the distribution and ecology of Ozark cavefish.
Impacts
Studies in my lab have stressed (1) providing an information foundation regarding little-studied non-game and endangered aquatic species so that informed management and conservation decisions can be made on their behalves, and (2) using behavioral assays as a means by which aquatic organisms can "tell" us how certain environmental conditions are impacting their well-being.
Publications
- Gemeinhardt, T.R., J.M. Nolan, D.B. Noltie, and M.C. Robbins. 2001. Fishing for ideas: teaching and learning in a university ichthyology course. Fisheries 26(12):6-14.
- Haney, D.C., J.C. Vokoun, and D.B. Noltie. 2001. Alarm pheromone recognition in a Missouri darter assemblage. Journal of Fish Biology 59(4):810-817.
- Noltie, D.B., and C.W. Wicks. 2001. How hydrogeology has shaped the ecology of Missouri's Ozark cavefish (Amblyopsis rosae) and southern cavefish (Typhlichthys subterraneus): insights on the sightless from understanding the underground. Environmental Biology of Fishes 62(1-3):171-194.
- Albers, J.L., M.L. Wildhaber, and D.B. Noltie. 2001. Influence of photoperiod and temperature on the Neosho madtom (Noturus placidus) reproductive cycle. Final Report to the U.S. Army Corps of Engineers, Environmental Analysis and Support Branch, Tulsa District, Oklahoma. v + 43 pp.
- Albers, J.L., M.L. Wildhaber, and D.B. Noltie. 2001. Influence of flowing water on Neosho madtom (Noturus placidus) reproductive behavior. Final Report to the U.S. Army Corps of Engineers, Environmental Analysis and Support Branch, Tulsa District, Oklahoma. v + 45 pp.
- DiStefano, R.J., J. Young, and D.B. Noltie. 2001. A study of the life history of Orconectes hylas with comparisons to Orconectes peruncus and Orconectes quadruncus in Ozarks streams, Missouri, U.S.A. Missouri Department of Conservation Final Report for U.S. Fish and Wildlife Service No. 14-16-0003-89-930, Amendment 19. 28 pp.
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Progress 01/02/00 to 12/31/00
Outputs
Work with P.Carvalho has lead to the development of an optomotor testing apparatus for studying visual acuity and movement detection in larval to adult fishes; a preliminary study has been conducted across the life stages of the Japanes medaka. Work with D.Papoulias continues to investigate the effects of endocrine-disrupting compounds on the sexual development of young fish, using medaka as a model species. Work with P.Wright has developed a behavioral response assay for documenting effects of contaminants on pre-hatch fish embryos. With T.Gemeinhardt, the reproductive ecology of redear sunfish has been examined in Missouri reservoirs; comparisons with bluegill sunfish have also been made. With J.Albers, the potentially deleterious effects of flow on the breeding behavior of Neosho madtoms has been demonstrated under laboratory conditions. With J.Whitaker, the substrate, feeding, and conspecific responses of the cave-dwelling pink planarian have been documented for
the first time. Work on the distribution and ecology of the cave-dwelling amblyopsid cavefish is continuing with K.Lister.
Impacts
Studies in my lab have stressed (1) providing an information foundation regarding little-studied non-game and endangered aquatic species so that informed management and conservation decisions can be made on their behalves, and (2) using behavioral assays as a means by which aquatic organisms can 'tell' us how certain environmental conditions are impacting their well-being.
Publications
- Papoulias, D.M., D.B. Noltie, and D.E. Tillitt. 2000. Effects of methyl testosterone exposure on sexual differentiation in medaka, Oryzias latipes. Marine Environmental Research 51:181-184.
- Wang, N., R.S. Hayward, and D.B. Noltie. 2000. Effects of social interaction on growth of juvenile hybrid sunfish held at two densities. North American Journal of Aquaculture 62:161-167.
- Vokoun, J.C., and D.B. Noltie. 2000. Missouri state parks fish faunal survey. Completion Report. Department of Fisheries and Wildlife Sciences, University of Missouri-Columbia. 169 pp.
- Hayward, R.S., N. Wang, and D.B. Noltie. 2000. Group holding impedes compensatory growth of hybrid sunfish. Aquaculture 183:299-305.
- Noltie, D.B., and T.P. Holtsford. 2000. Preliminary report on award #1448-0004-96-993. Range-wide structuring of genetic variation in the federally-threatened Ozark cavefish (Amblyopsis rosae). 5 pp.
- Wicks, C.M., T. Dogwiler, R. Lerch, and D.B. Noltie. 2000. Hydrologic setting of the karst window at Rock Bridge Memorial State Park. EOS - Transactions of the American Geophysical Union 81(19):219.
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Progress 01/01/99 to 12/31/99
Outputs
Diana Papoulias' work on the effects of endocrine disrupting chemicals on manifest gender (vs. genetic gender) has shown the utility of medaka (Oryzias latipes) as a model. Paulo Carvalho has developed a video-linked opto-motor device for assessing the effects of dioxin on the development and function of the optic system in larval or small fishes. Peggy Wright continues with assessments of the interactive effect of thyamine deficiency and dioxin exposure using rainbow (Oncorhynchus mykis) and lake trout (Salvelinus namaycush) as models. She has also determined that pre-hatch salmonid embryo responses to tactile stimuli can be used to assay contaminant exposures/effects. Derek Martin has determined that the extirpation of Topeka shiner (Notropis topeka) populations in Boone County, Missouri seems to be related more to urbanization-related measures of land use change than of the large-scale changes expected to be of importance (e.g., deforestation; area under
agriculture). Todd Gemeinhardt has determined that the absence of precocious maturants in Missouri redear (Lepomis microlophus) and bluegill sunfish (Lepomis macrochirus) populations is related to their more rapid attainment of reproductive maturity relative to more northern populations. Ken Lister has updated the range and status of Ozark cavefish (Amblyopsis rosae) populations in Missouri. Janice Albers is assessing the effects of flow on the Neosho madtom (Noturus placidus). JoAnne Whitaker is using in-lab behavioral choice experiments to determine the habitat preferences of the pink planarian (Macrocotyla glandulosa).
Impacts
(N/A)
Publications
- Riggert, C.M., R.J. DiStefano, and D.B. Noltie. 1999. Distributions and selected ecological aspects of the crayfishes Orconectes peruncus Creaser, 1931) and Orconectes quadruncus (Creaser, 1933) in Missouri. American Midland Naturalist 142:348-362.
- Papoulias, D.M., D.B. Noltie, and D.E. Tillitt. 1999. An in vivo model fish system to test chemical effects on sexual differentation and development: exposure to ethinyl estradiol. Aquatic Toxicology 48:37-50.
- Papoulias, D.M., et al. 1999. A model fish system to test chemical effects on sexual differentiation and development. Pp. 447-454 in D.W. Morganwalp and H.T. Buxton (eds.). USGS Toxic Substances Hydrology Proceedings. Hayward, R.S., N. Wang, and D.B. Noltie. Group holding impedes compensatory growth of hybrid sunfish. Aquaculture 183:299-305.
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Progress 01/01/98 to 12/31/98
Outputs
(1) J. Phillips (post-doc) has developed several microsatellite markers for use in distinguishing parentage and relatedness within largemouth bass populations. (2) A strategy has been developed for improving growth in cultured sunfishes using sequential periods of short-term food restriction to elicit the compensatory growth response (with R.S. Hayward and N. Wang (post-doc)). (3) D. Papoulias (Ph.D. student) has developed a system for screening the effects of endocrine disruptors on the sexual development of teleost fishes. (4) P. Wright (Ph.D. student) has developed a behavioral assay of the effects of contaminants and thiamine insufficiency on pre-hatch Great Lakes salmonid embryos. (5) P. Carvalho (Ph.D. student) is examining the effects of dioxin on visual system development and functioning in rainbow trout. (6) A collaboration with D. Martin (Ph.D. student; C. Nilon advisor) is using GIS to examine the relationship between in-watershed historic land use change
and risk of extirpation in Topeka shiner populations. (7) K. Lister (M.S. student) has completed a survey and status assessment of Ozark cavefish populations across the species' range. (8) T. Gemeinhardt (M.S. student) is currently studying the reproductive ecology of redear sunfish. (9) J. Whitaker (M.S. student) is examining habitat use, behavior, and population dynamics in a cave-dwelling planarian. (10) J. Albers is investigating the relationship between flow rates, habitat use, and reproduction in Neosho madtoms.
Impacts
(N/A)
Publications
- Whitledge, G.W., R.S. Hayward, D.B. Noltie, and N. Wang. 1998. Testing bioenergetics models under feeding regimes that elicit compensatory growth. Transactions of the American Fisheries Society 127:740-746.
- Wang, N., R.S. Hayward, and D.B. Noltie. 1998. Effect of feeding frequency on food consumption, growth, size variation, and feeding pattern of age-0 hybrid sunfish. Aquaculture 165:261-267.
- Wang, N., R.S. Hayward, and D.B. Noltie. 1998. Variation in food consumption, growth, and growth efficiency among juvenile hybrid sunfish held individually. Aquaculture 167:43-52.
- Walton, D.A., S.A. Fischer, and D.B. Noltie. 1999. Effects of elevated ambient temperature on white crappie feeding and growth. Transactions of the Missouri Academy of Sciences. In Press.
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Progress 01/01/97 to 12/31/97
Outputs
Microsatellite genetic markers have been developed to assess relatedness among individuals in largemouth bass populations. Hybrid sunfish compensatory growth studies are investigating how food type, social environment, and feed scheduling affects the response. Japanese medaka embryos are being exposed to environmental androgens and estrogens to test effects on sexual differentiation, gonad development, morphology, and sexual behavior. We are also investigating how dioxin and thiamine deficiency interact in causing "early mortality syndrome" in Great Lakes salmonids. A study of dioxin effects on simple model fish population populations across life history stages has been initiated. DNA sequencing of the ND2 mtDNA gene in the endangered amblyopsid cavefishes has shown significant within-watershed genetic differentiation with phylogenetic analyses support revising the systematics and management of this family. Confirmatory results are being sought using the ITS1 nuclear
gene. Ozark cavefish work has determined the species' historic and current distributions, how the locations these fish occupy differ from the microhabitats generally available in the caves they occur in, and identified sites with appreciable contamination. Work on redear sunfish reproductive ecology and the determinants of male reproductive success is also being initiated. Salmon, cavefish, sunfish/bass, gar, pirate perch, and catfish work is ongoing.
Impacts
(N/A)
Publications
- JOHNSON, B.L. and NOLTIE, D.B. 1997. Demography, growth, and reproductive allocation in stream-spawning longnose gar (Lepisosteus osseus). Transactions of the American Fisheries Society 126:438-466.
- HAYWARD, R.S., NOLTIE, D.B. and WANG, N. 1997. Use of compensatory growth to double hybrid sunfish growth rates. Transactions of the American Fisheries Society 126:316-322.
- BERGSTROM, D.E. 1997. Molecular phylogenetics & historical biogeography of the family Amblyopsidae. Pg 4-5, I.D. Sasowsky, D.W. Fong, & E.L. White, Cons. & Prot. of the Biota of Karst. Karst Waters
- NOLTIE, D.B. and LISTER, K.B. 1997. Range-wide status of Ozark cavefish, and Long's and McGee Caves site acquisition evaluation. Oklahom Chapter, The Nature Conservancy. 5 pp.
- BERGSTROM, D.E., Jr. 1997. The phylogeny and historical biogeography of Missouri's Amblyopsis rosae (Ozark cavefish) and Typhlichthys subterraneus (southern cavefish). M.S. thesis, Fisheries & Wildlife, Univ. of Missouri-Columbia, 62 pp.
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Progress 01/01/96 to 12/30/96
Outputs
Microsatellite genetic markers are being developed to assess relatedness among individuals in largemouth bass populations. Work with hybrid sunfish has doubled their growth rates by repeatedly invoking compensatory growth via repeated food deprivation and reprovisioning. 2,3,7,8-TCDD (dioxin) administered to d-rR strain Japanes medaka embryos has been shown to affect sexual differentiation/gonadal development, feminizing genetic males. We are investigating how xenobiotic contaminants and/or thiamine deficiency causes "early mortality syndrome" in Great Lakes salmonids. DNA sequencing of the ND2 mtDNA gene in the endangered amblyopsid cavefishes has shown significant within-watershed genetic differentiation within currently-recognized species; phylogenetic analyses support revising the systematics and management of this family. Ozark cavefish work has determined the species' historic and current distributions, how the locations these fish occupy differ from the
microhabitats generally available in the caves they occur in, and identified sites with appreciable contamination. Additional studies in progress are investigating: growth responses by flathead catfish to the Flood of '93; pirate perch behavior and breeding ecology; rock bass reproductive allocation; southern cavefish bioenergetics, feeding, olfaction, and movement; pink salmon gut morphology; white crappie and largemouth bass prey use; longnose gar age/sex determination.
Impacts
(N/A)
Publications
- Johnson, B.L., and D.B. Noltie. 1996. Migratory dynamics of stream-spawning longnose gar (Lepisosteus osseus). Ecology of Freshwater Fish 5:97-107.
- Johnson, B.L., and D.B. Noltie. 1997. Demography, growth, and reproductive allocation in stream-spawning longnose gar. Transactions of the American Fisheries Society (in press).
- Hayward, R.S., D.B. Noltie, and N. Wang. 1997. Using compensatory growth for more than catching up in hybrid sunfish. Transactions of the American Fisheries Society (in press).
- Walton, D.A., S.A. Fischer, and D.B. Noltie. 1997. Effects of elevated ambient temperature on white crappie (Pomoxis annularis) feeding and growth. Trans. Missouri Academy of Sci. (in press).
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Progress 01/01/95 to 12/30/95
Outputs
Studies of southern cavefish feeding behavior and ecology have determined the species' maximum and maintenance rations (Cmax and Cmain) and that individuals fail to allocate their foraging efforts consistent with predictions based on optimal foraging theory. Studies of cavefish gape size/body size relationships have shown which prey sizes cavefish are constrained to use, and that significant differences occur both inter- and intra- specifically. Work on Ozark cavefish has determined the species' historic and current distributions, and has assessed how the locations these fish occupy differ from the microhabitats generally available in the caves they occur in. DNA sequencing of the ND2 mtDNA gene in amblyopsid cavefish has demonstrated significant within-watershed genetic differentiation within currently recognized species; phylogenetic analyss support a significant revision of the systemation of this family. Preliminary studies show that 2,3,7,8-TCDD (dioxin)
administered to d-rR strain Japanes medaka embryos affects sexual differentiation and gonadal development, feminizing genetic males. Experiments on hybrid sunfish in a recirculating culture system have doubled growth rates by repeatedly invoking compensatory growth via successive periods of food deprivation and reprovision.
Impacts
(N/A)
Publications
- Johnson, B.L., and D.B. Noltie. 1995. Migratory dynamics of stream-spawning longnose gar (Lepisosteus osseus). Ecology of Freshwater Fish. In Press.
- Schubert, A.L.S., and D.B. Noltie. 1995. Effects of feeding regime on prey consumption and weight change rates in captive southern cavefish, Typhlichthys subterraneus Girard. National Speleological Society Bulletin 57(2):103-107.
- Schubert, A.L.S., and D.B. Noltie. 1995. Laboratory studies of substrate and microhabitat selection in the southern cavefish (Typhlichthys subterraneus Girard). Ecology of Freshwater Fish 4:141-151.
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Progress 01/01/94 to 12/30/94
Outputs
With Dr. Ning Wang (PDF) and Dr. R.S. Hayward, work on eliciting compensatory growth in hybrid sunfish using punctuated feeding regimes is underway. A. Schubert's 1993 southern cavefish thesis work on habitat selection work is in press, and the feeding work is in revision. S. Sachdev's 1993 rock bass thesis work is in review. B. Johnson's 1994 longnose gar thesis work on migratory dynamics has been submitted; the demographics work is in ms form. D. Bergstrom's cavefish genetics study is nearing completions. Lister's cavefish habitat utilization work is being written up. D. Papoulias' dioxin-induced medaka sex change study is underway. H. Mattingly's Niangua darter study is in progress. M. Bye's completed longnose gar age determination study is being drafted. J. Hartwig's rock bass reproductive allocation and chronology study is being written up. A. Szymanski's cavefish feeding study is being written up. C. Brauer's analysis of a 25-year muskie fishery database for
population and catachability trends is underway. A. Kirkpatrick's pirate perch habitat selection and reproductive behavior work continues. D. Walton's work on temperature effects on black crappie growth is being written up. K. Smith's pink salmon otolith work was presented at a conference in April. My own research on cavefish museum samples is itself going to be presented at a conference this year.
Impacts
(N/A)
Publications
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Progress 01/01/93 to 12/30/93
Outputs
Projects completed include (1) a molecular genetic analysis of Ambloplites populations in Missouri and eastern North America, (2) a study of microhabitat and feeding in the southern cavefish, Typhlichthys subterraneus, (3) work on differential allocation of resources to gonad development in male pink salmon, Oncorhynchus gorbuscha, (4) a test of the utility of back-estimating pink salmon pre-spawning total body weights from the otoliths of post-spawners. Ongoing work is progressing as regards (1) the reproductive ecology of stream-spawning longnose gar (Lepisosteus osseus), (2) the endemicity and phylogeny of cavefish populations/species (Amblyopsis rosae), (4) gender alteration in fishes resulting from environmental contaminants, (5) comparative aging techniques for longnose gar, and (6) yearly reproductive allocation in rock bass.
Impacts
(N/A)
Publications
- SACHDEV, S.C. 1993. Molecular phylogenetic analysis of AMBLOPLITES populations. M.S. thesis, F&W, MU,x +136 pp.
- SCHUBERT, A.L.S. 1993. Microhabitat selection and feeding in the southern cavefish (TYPHLICHTHYS SUBTERRANEUS). M.S. thesis, F&W, MU. xii + 157 pp.
- BYE, M.R., and D.B. NOLTIE. 1993. Differences in allocation of biomass to reproduction and gonad composition in pink salmon (ONCORHYNCHUS GORBUSCHA). MU McNair Journal 1:24-27.
- SACHDEV, S.C., K.C. CONE, and D.B. NOLTIE. 1993. Restriction fragment length polymorphisms in the ND2 gene as a tool for classifying members of the genus AMBLOPLITES (Pisces: Centrarchidae). Report to the Graduate Professional Council, MU.
- BYE, M.R., and D.B. NOLTIE. 1993. Differences in allocation of biomass to reproduction and gonad composition in pink salmon (ONCORHYNCHUS GORBUSCHA). Report to McNair Program, MU 25 pp.
- SMITH, K.M., and D.B. NOLTIE. 1993. Correlations between otolith weight and body size in pink salmon (ONCORHYNCHUS GORBUSCHA). Report to the Access Enhancement Program, Graduate School, MU. 11 pp.
- NOLTIE, D.B. 1993. An assessment of Ozark cavefish (AMBLYOPSIS ROSAE) habitat and groundwater quality in Missouri. Missouri Water News 5(1):1.
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Progress 01/01/91 to 12/30/91
Outputs
There are eight studies currently under way in my laboratory, all of which involve aspects of the reproduction, ecology, and behavior of native fishes. The first of three linked studies is a laboratory study of microhabitat selection and reproductive behavior of Southern Cavefish (Typhlichthys subterraneus). The second is an in-cave study characterizing in situ habitat use/non-use in this species. The third is a study of the potential endemicity of Ozark Cavefish (Amblyopsis rosae) and Southern Cavefish populations via post-PCR sequencing of mitochondrial DNA. A fourth project is employing similar molecular biological techniques to test current species designations in the centrarchid genus Ambloplites (rock bass). Study of the reproductive ecology, breeding behavior, and population structure of a migratory population of longnose gar (Lepisosteus osseus) comprises the fifth area of investigation. The sixth study will investigate the behavioral and population impacts
on fish of exposure to contaminants that appear to mimic molecules produced by the central nervous system. The seventh study is one that focuses on the mating and parental care system of pirate perch (Aphredoderus sayanus), a species in which females incubate their eggs in their branchial cavities. Finally, study of the reproductive ecology and behavior of pink salmon (Oncorhynchus gorbuscha) continues.
Impacts
(N/A)
Publications
- LISTER, K. 1991. Survey results (Missouri) and stream characteristics of Ozark Cavefish caves. Ozark Cavefish Conference, November 14, 1991, Springfield, MO. Unpub.
- NOLTIE, D. B. 1991. Ozark Cavefish genetics study. Ozark Cavefish Conference, November 14, 1991, Springfield, Missouri. Unpub.
- SCHUBERT, A. L. S. 1991. Reproductive ecology and microhabitat selection in Southern Cavefish. Ozark Cavefish Conference, November 14, 1991, Springfield, MO. Unpub.
- SCHUBERT, A.L.S., and NOLTIE, D. B., 1991. The relation of body size and agonistic behavior in the pirate perch. 53rd Mid-West Fish and Wildlife Conference, December 3, 1991, Des Moines, IA. Unpub.
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