Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Fishes

Biology

Institution
Publication Year
Publication
Publication Type
File Type

Articles 1 - 30 of 35

Full-Text Articles in Life Sciences

The Comparison Of Different Wetland Fish Assemblages Over Time, Robert Edward Adelstein Jan 2024

The Comparison Of Different Wetland Fish Assemblages Over Time, Robert Edward Adelstein

Theses, Dissertations and Capstones

Wetlands provide essential ecosystem services. Historically, we have drained and filled 73% of wetlands for agricultural use throughout the United States from the 1780s to the 1980s (Dahl, 1990). A nationwide focus on restoring wetlands has since occurred. Literature on restored/mitigated wetlands is rife with examples that do and do not support the same ecosystem services as natural wetlands (Langston, 1997; Meil, 2014). Restoration of wetlands occurred at the Green Bottom Wildlife Management Area (GBWMA) over several decades. Various sections of the wetland were classified by age, water depth, and vegetation. One hypothesis was that differences in fish assemblage would …


Role Of Nucleobindin-2/Nesfatin-1 In The Regulation Of Energetic Status And Maternal Mouthbrooding In The Cichlid Fish, Astatotilapia Burtoni, Saachi Chugh Aug 2022

Role Of Nucleobindin-2/Nesfatin-1 In The Regulation Of Energetic Status And Maternal Mouthbrooding In The Cichlid Fish, Astatotilapia Burtoni, Saachi Chugh

LSU Master's Theses

Feeding and energetics are fundamental processes in all species that must also be balanced with reproductive investment. The peptide hormone nesfatin-1 is encoded by the nucleobindin-2(nucb2) gene and has recently emerged as a key player involved in both feeding and reproduction across vertebrates. How nesfatin-1 might help regulate trade-offs between feeding and reproduction, however, are relatively unexplored. The female cichlid fish Astatotilapia burtoniis an ideal system to examine the role of nesfatin-1 in regulating metabolic and reproductive functions because this species cycles between a gravid feeding state while preparing to mate, followed by a forced starvation …


Phylogenomics And Population History Of Cichlid And Live-Bearing Fish Species In Lowland Neotropical Rivers, Konrad Taube Aug 2021

Phylogenomics And Population History Of Cichlid And Live-Bearing Fish Species In Lowland Neotropical Rivers, Konrad Taube

College of Science and Health Theses and Dissertations

Within Middle America, cichlids and poeciliids account for more than half of the fish biodiversity. This richness in fish fauna highlights the complexity of Middle American biogeography: no other continental area on earth contains within its range the unparalleled abundance of secondary freshwater fish species (fish that can tolerate both saltwater and freshwater). Research into the biogeography of widely distributed Middle American freshwater fish is essential to understanding this unique region.

Three species of freshwater fishes (Belonesox belizanus – Pike killifish, Vieja maculicauda – Black belt cichlid, and Gambusia nicaraguensis – Nicaraguan mosquitofish) are widely distributed across rivers on …


Evolution Of Extreme Habitat Specialists In The Dark: Cavefishes And Anglerfishes, Pamela Hart May 2021

Evolution Of Extreme Habitat Specialists In The Dark: Cavefishes And Anglerfishes, Pamela Hart

LSU Doctoral Dissertations

Extremophilic organisms are fascinating in that they thrive in physiologically demanding environments. Extreme habitats include subsurface caves and the deep sea, which share several qualities like low light and cold temperatures. Extremophiles have adapted bizarre characteristics that allow them to thrive in such harsh environments including eye and pigment loss (cavefishes) and development of a lure in anglerfishes. These traits are integral to the health and fitness of these organisms, yet the evolutionary history of these traits is unclear.

Cave adaptation has evolved repeatedly across the Tree of Life, famously leading to eye degeneration and loss, yet its macroevolutionary implications …


Abundance And Species Diversity Hotspots Of Tracked Marine Predators Across The North American Arctic, David J. Yurkowski, Marie Auger-Méthé, Mark L. Mallory, Sarah N.P. Wong, Grant Gilchrist, Andrew E. Derocher, Evan Richardson, Nicholas J. Lunn, Nigel E. Hussey, Marianne Marcoux, Ron R. Togunov, Aaron T. Fisk, Lois A. Harwood, Rune Dietz, Aqqalu Rosing-Asvid, Erik W. Born, Anders Mosbech, Jérôme Fort, David Grémillet, Lisa Loseto Mar 2019

Abundance And Species Diversity Hotspots Of Tracked Marine Predators Across The North American Arctic, David J. Yurkowski, Marie Auger-Méthé, Mark L. Mallory, Sarah N.P. Wong, Grant Gilchrist, Andrew E. Derocher, Evan Richardson, Nicholas J. Lunn, Nigel E. Hussey, Marianne Marcoux, Ron R. Togunov, Aaron T. Fisk, Lois A. Harwood, Rune Dietz, Aqqalu Rosing-Asvid, Erik W. Born, Anders Mosbech, Jérôme Fort, David Grémillet, Lisa Loseto

Great Lakes Institute for Environmental Research Publications

Aim: Climate change is altering marine ecosystems worldwide and is most pronounced in the Arctic. Economic development is increasing leading to more disturbances and pressures on Arctic wildlife. Identifying areas that support higher levels of predator abundance and biodiversity is important for the implementation of targeted conservation measures across the Arctic. Location: Primarily Canadian Arctic marine waters but also parts of the United States, Greenland and Russia. Methods: We compiled the largest data set of existing telemetry data for marine predators in the North American Arctic consisting of 1,283 individuals from 21 species. Data were arranged into four species groups: …


The Reproductive Season Of The Highland Stoneroller, Campostoma Spadiceum, Evidenced By Museum Specimens, C. Renn Tumlison, Henry Robison, Grace Wills Jan 2019

The Reproductive Season Of The Highland Stoneroller, Campostoma Spadiceum, Evidenced By Museum Specimens, C. Renn Tumlison, Henry Robison, Grace Wills

Journal of the Arkansas Academy of Science

The Highland Stoneroller (Campostoma spadiceum) was described as a distinct species in 2010. Since then, the only study specific to this species is a survey of distribution, and nothing is known about reproduction. We examined 134 lots including 315 specimens of C. spadiceum housed in the Henderson State University collection of fishes to evaluate the timing of reproductive events. We dissected individuals to reveal sex and reproductive status. Females as small as 49 mm total length were able to yolk eggs, and follicles were in development by October. Ripe eggs were present in specimens collected from January through …


Vertebrate Natural History Notes From Arkansas, 2019, C. Renn Tumlison, Chris Mcallister, Henry Robison, Matt Connior, Ron Redman, Stan Trauth, Paul Port Jan 2019

Vertebrate Natural History Notes From Arkansas, 2019, C. Renn Tumlison, Chris Mcallister, Henry Robison, Matt Connior, Ron Redman, Stan Trauth, Paul Port

Journal of the Arkansas Academy of Science

Important observations of natural history often go unreported because they are not part of larger studies, but small details can provide insights that lead to interesting questions about ecological relationships or environmental change. We have compiled recent important observations of distribution, deformities, foods, parasites, and reproduction of various vertebrates. Included are a new record of Lake Sturgeon (Acipenser fulvescens), a new size record of mudpuppy (Necturus louisianensis), and a second observation of bilateral gynandromorphism in a Northern Cardinal (Cardinalis cardinalis). These unique observations continue to grow knowledge of vertebrate biology in Arkansas.


Dna Sequences Of Mitochondrial Cytochrome C Oxidase I (Coi) Genes From Deep Sea Fishes Collected During Deepend Cruise Dp05 From 2017-05-01 To 2017-05-11, Kimberly A. Finnegan, Andrea Bernard, M. Weber, Ron Eytan, Mahmood S. Shivji Jan 2018

Dna Sequences Of Mitochondrial Cytochrome C Oxidase I (Coi) Genes From Deep Sea Fishes Collected During Deepend Cruise Dp05 From 2017-05-01 To 2017-05-11, Kimberly A. Finnegan, Andrea Bernard, M. Weber, Ron Eytan, Mahmood S. Shivji

DEEPEND Datasets

Deep sea fishes were collected in the northern Gulf of Mexico during DEEPEND cruise DP05 from May 1 to 11, 2017. This dataset contains Genbank accession numbers of DNA sequences of the mitochondrial Cytochrome c oxidase I (COI) gene from fish species collected.


Vertebrate Natural History Notes From Arkansas, 2018, Renn Tumlison, D. Blake Sasse, Henry W. Robison, Matt B. Connior, Chris T. Mcallister, Kelly Jobe, Matthew Anderson Jan 2018

Vertebrate Natural History Notes From Arkansas, 2018, Renn Tumlison, D. Blake Sasse, Henry W. Robison, Matt B. Connior, Chris T. Mcallister, Kelly Jobe, Matthew Anderson

Journal of the Arkansas Academy of Science

Because meaningful observations of natural history are not always part of larger studies, important pieces of information often are unreported. Small details, however, can fill gaps in understanding and lead to interesting questions about ecological relationships or environmental change. We have compiled recent important observations of distribution, deformities, and foods of various vertebrates, observations of winter activity of a woodchuck (Marmota monax) and winter torpor of a hoary bat (Lasiurus cinereus), and also report a very unusual case of bilateral gynandromorphism in a Cardinal (Cardinalis cardinalis). These unique observations continue to add immensely to …


Dna Sequences Of The Mitochondrial Cytochrome C Oxidase I (Coi) Genes From Deep Sea Fishes. Cruises Dp01 And Dp02 From May 2015 - August 2015, Andrea Bernard, Max Weber, Kimberly A. Finnegan, Mahmood S. Shivji, Ron Eytan May 2017

Dna Sequences Of The Mitochondrial Cytochrome C Oxidase I (Coi) Genes From Deep Sea Fishes. Cruises Dp01 And Dp02 From May 2015 - August 2015, Andrea Bernard, Max Weber, Kimberly A. Finnegan, Mahmood S. Shivji, Ron Eytan

DEEPEND Datasets

The deep sea ecosystem is believed to contain the highest biomass of fish in the oceans. However, the taxonomic diversity in this ecosystem is incompletely described and likely to be vastly underestimated. DNA sequence data (barcodes) have become a key tool to discover hidden biodiversity. We generated mitochondrial DNA barcode datasets based on the Cytochrome c oxidase I (COI) gene from deep sea fishes. These data were analyzed using phylogenetic and statistical methods to reveal cryptic species and make taxonomic linkages between adult fishes and their early life stages. These datasets were generated from fishes collected in the Northern Gulf …


Zootaxa: Guide To The Parasites Of Fishes Of Canada Part V: Nematoda, Hisao P. Arai, John W. Smith Jan 2016

Zootaxa: Guide To The Parasites Of Fishes Of Canada Part V: Nematoda, Hisao P. Arai, John W. Smith

Biology Faculty Publications

Keys are provided for the identification of the nematode species known to be parasites of Canadian fishes. The nematodes are described and illustrated, with a note of the site(s) they occupy in named fish host(s) and their geographical distribution. Parasite records are given by author and date, full details of which can be found in a bibliography of over 800 references. Diagnoses and keys for 22 Families, 47 genera and 88 species of nematodes are also given, together with a glossary of terms, a host-parasite list, and indices to both nematode parasites and hosts


Water Transport And The Functional Dynamics Of Aquaporins In Osmoregulatory Organs Of Fishes, Steffen S. Madsen, Morton B. Engelund, Christopher P. Cutler Aug 2015

Water Transport And The Functional Dynamics Of Aquaporins In Osmoregulatory Organs Of Fishes, Steffen S. Madsen, Morton B. Engelund, Christopher P. Cutler

Department of Biology Faculty Publications

Aquaporins play distinct roles for water transport in fishes as they do in mammals—both at the cellular, organ, and organismal levels. However, with over 32,000 known species of fishes inhabiting almost every aquatic environment, from tidal pools, small mountain streams, to the oceans and extreme salty desert lakes, the challenge to obtain consensus as well as specific knowledge about aquaporin physiology in these vertebrate clades is overwhelming. Because the integumental surfaces of these animals are in intimate contact with the surrounding milieu, passive water loss and uptake represent two of the major osmoregulatory challenges that need compensation. However, neither obligatory …


Body Shape Divergence In Invasive Round Goby, Cat Collins Jun 2014

Body Shape Divergence In Invasive Round Goby, Cat Collins

DePaul Discoveries

The round goby, Neogobius melanostomus, originally native to the Black and Caspian seas, was introduced into the Great Lakes via ballast water in the 1990’s. Since then, the species has spread to all of the Great Lakes, thriving in the Lake Michigan region and spreading to surrounding bays and rivers. Invasive species are considered to have a high evolutionary potential. Differences in environmental conditions between native and introduced ranges stimulate adaptive evolution. Multiple introductions of an exotic species can result in separate instances of founder effects, further increasing the chance of evolutionary change. A total of 267 round goby specimens …


Relative Intestine Length And Feeding Ecology Of Freshwater Fishes, David O. Ribble, M H. Smith May 2014

Relative Intestine Length And Feeding Ecology Of Freshwater Fishes, David O. Ribble, M H. Smith

David O Ribble

There is a significant relationship between the intestine length (Y) and total body length (X) for 11 species of freshwater fish (Y = 0.08X1.42). Sufficient variation exists about this relationship to indicate important differences among the species' diets. The diets for each species, ranked on a Trophic Index scale determined from literature data, are negatively rank order correlated with the mean relative intestine lengths (rs = -0.67). There is no significant rank order correlation between the Trophic Indices determined from data on stomach contents and the mean relative intestine lengths for fish from a single creek.


Fishes Of Eastern Washington: A Natural History, Volume 4, Allan T. Scholz, Josh Smith, Amanda Maifeld, Judy Mcmillan, Larry Conboy, Eastern Washington University. Department Of Biology., Eastern Washington University. University Graphics. Jan 2014

Fishes Of Eastern Washington: A Natural History, Volume 4, Allan T. Scholz, Josh Smith, Amanda Maifeld, Judy Mcmillan, Larry Conboy, Eastern Washington University. Department Of Biology., Eastern Washington University. University Graphics.

Biology Faculty Publications

Volume 4 of 4.

CHAPTER 6: KEY TO FAMILIES OF EASTERN WASHINGTON FISHES (REVISED), CHAPTER 18: FAMILY PERCOPSIDAE: TROUT-PERCHES, CHAPTER 19: FAMILY GADIDAE: CODS, CHAPTER 20: FAMILY POECILIIDAE: LIVEBEARERS, CHAPTER 21: FAMILY GASTEROSTEIDAE: STICKLEBACKS, CHAPTER 22: FAMILY COTTIDAE: SCULPINS, CHAPTER 23: FAMILY CENTRARCHIDAE: SUNFISHES, CHAPTER 24: FAMILY PERCIDAE: PERCH, CHAPTER 25: FISH WITH RARE OR UNCERTAIN STATUS IN EASTERN WASHINGTON, CHAPTER 26: LIMINOLOGY, WATER QUALITY, AND FISH HABITAT


Fishes Of Eastern Washington: A Natural History, Volume 1, Allan T. Scholz, Tyler Basler, Josh Smith, Judy Mcmillan, Larry Conboy, Eastern Washington University. Department Of Biology., Eastern Washington University. University Graphics. Jan 2014

Fishes Of Eastern Washington: A Natural History, Volume 1, Allan T. Scholz, Tyler Basler, Josh Smith, Judy Mcmillan, Larry Conboy, Eastern Washington University. Department Of Biology., Eastern Washington University. University Graphics.

Biology Faculty Publications

Volume 1 of 4.

CHAPTER 1: INTRODUCTION, CHAPTER 2: CHECKLISTS OF EXTANT AND FOSSIL FISHES FOUND IN EASTERN WASHINGTON, CHAPTER 3: THE DISCOVERERS, CHAPTER 4: GEOLOGY, CHAPTER 5: COLUMBIA RIVER BASIN HYDROLOGY AND FISH DISTRIBUTION IN EASTERN WASHINGTON


Fishes Of Eastern Washington: A Natural History, Volume 3, Allan T. Scholz, Josh Smith, Amanda Maifeld, Judy Mcmillan, Larry Conboy, Eastern Washington University. Department Of Biology., Eastern Washington University. University Graphics. Jan 2014

Fishes Of Eastern Washington: A Natural History, Volume 3, Allan T. Scholz, Josh Smith, Amanda Maifeld, Judy Mcmillan, Larry Conboy, Eastern Washington University. Department Of Biology., Eastern Washington University. University Graphics.

Biology Faculty Publications

Volume 3 of 4.

CHAPTER 14: FAMILY SALMONIDAE: SALMON, TROUT, CHARR, WHITEFISH AND GRAYLINGS, CHAPTER 15: FAMILY SALMONIDAE (SUBFAMILY COREGONINAE): WHITEFISH, CHAPTER 16: FAMILY SALMONIDAE (SUBFAMILY MONINAE): SALMON, TROUT AND CHARR, CHAPTER 17: FAMILY SALMONIDAE (SUBFAMILY THYMALLINAE): GRAYLINGS


Applying The Reference Condition Approach To Bioassessment Of Cape Breton Island Streams, Kari A. Moreland Aug 2013

Applying The Reference Condition Approach To Bioassessment Of Cape Breton Island Streams, Kari A. Moreland

Electronic Thesis and Dissertation Repository

The reference condition approach (RCA) to bioassessment assesses the effect of human activity on ecosystems relative to sites that are relatively unexposed to such activity. This study uses the RCA to characterize the nature of relatively pristine streams on Cape Breton Island, Nova Scotia as a comparison to assess sites that have various degrees and types of exposure to human activities, including sites that have been remediated from acid mine drainage related to coal mining.

RCA models consisted of general linear models with environmental characteristics of reference sites as the predictor variables and biotic indices as the response variables. Findings …


Micrornas Reveal The Interrelationships Of Hagfish, Lampreys, And Gnathostomes And The Nature Of The Ancestral Vertebrate, Alysha M. Heimberg, Richard Cowper-Sal{Middle Dot}Lari, Marie Semon, Philip C. J. Donoghue, Kevin J. Peterson Nov 2010

Micrornas Reveal The Interrelationships Of Hagfish, Lampreys, And Gnathostomes And The Nature Of The Ancestral Vertebrate, Alysha M. Heimberg, Richard Cowper-Sal{Middle Dot}Lari, Marie Semon, Philip C. J. Donoghue, Kevin J. Peterson

Dartmouth Scholarship

Hagfish and lampreys are the only living representatives of the jawless vertebrates (agnathans), and compared with jawed vertebrates (gnathostomes), they provide insight into the embryology, genomics, and body plan of the ancestral vertebrate. However, this insight has been obscured by controversy over their interrelationships. Morphological cladistic analyses have identified lampreys and gnathostomes as closest relatives, whereas molecular phylogenetic studies recover a monophyletic Cyclostomata (hagfish and lampreys as closest relatives). Here, we show through deep sequencing of small RNA libraries, coupled with genomic surveys, that Cyclostomata is monophyletic: hagfish and lampreys share 4 unique microRNA families, 15 unique paralogues of more …


Diel Fish Habitat Selection In A Tributary Stream, Andria K. Salas, Eric B. Snyder Jan 2010

Diel Fish Habitat Selection In A Tributary Stream, Andria K. Salas, Eric B. Snyder

Peer Reviewed Publications

This study investigated the location and diel habitat preferences (at 100 m reach scale) of fish in a small tributary stream in late spring, early summer. During the day, coho (Oncorhynchus kisutch) preferred areas with more cover (deeper, greater extent of undercut banks) vs. night when LWD was preferred (Pearson correlation and step-wise MLR). Chinook (O. tshawytscha) exhibited an opposite pattern, preferring LWD during the day vs. higher velocity at night. This suggests these two potadromous species may be partitioning resources. Pooling coho, chinook and rainbow trout (O. mykiss) indicated reaches with more LWD …


Field Guide To The Fishes Of Eastern Washington, Allan T. Scholz, Holly J. Mclellan, Judy Mcmillan, Larry Conboy, Michelle Kirkendall, Angela Davis, Eastern Washington University. Department Of Biology., Eastern Washington University. University Graphics., United States. Bureau Of Land Management. Jan 2009

Field Guide To The Fishes Of Eastern Washington, Allan T. Scholz, Holly J. Mclellan, Judy Mcmillan, Larry Conboy, Michelle Kirkendall, Angela Davis, Eastern Washington University. Department Of Biology., Eastern Washington University. University Graphics., United States. Bureau Of Land Management.

Biology Faculty Publications

"This book was prepared through a grant from the United States Department of the Interior, Bureau of Land Management (BLM)."


Mercury Concentrations In South Texas Game Fishes, E. Anthony Reisinger Mar 2006

Mercury Concentrations In South Texas Game Fishes, E. Anthony Reisinger

Theses and Dissertations - UTB/UTPA

Mercury (Hg) is one of the most ubiquitous and controversial metals in the world primarily due to the toxicity of the organic form of the metal, methylmercury (MeHg). MeHg is a neurotoxin at high levels, known to manifest its effects on humans primarily through consumption of certain fish and marine mammals, which tend to bioaccumulate MeHg in their tissues over time. Increased fish consumption and, thus, mercury intake in residents of coastal areas necessitates a better awareness of MeHg content in game fish species, thus the subject of this study.

Three hundred thirty-nine tissue samples were taken from 19 south …


Investigating Hydrologic Alteration As A Mechanism Of Fish Assemblage Shifts In Urbanizing Streams, Allison H. Roy, Mary C. Freeman, Byron J. Freeman, Seth J. Wenger, William E. Ensign, Judith L. Meyer Sep 2005

Investigating Hydrologic Alteration As A Mechanism Of Fish Assemblage Shifts In Urbanizing Streams, Allison H. Roy, Mary C. Freeman, Byron J. Freeman, Seth J. Wenger, William E. Ensign, Judith L. Meyer

Faculty and Research Publications

Stream biota in urban and suburban settings are thought to be impaired by altered hydrology; however, it is unknown what aspects of the hydrograph alter fish assemblage structure and which fishes are most vulnerable to hydrologic alterations in small streams. We quantified hydrologic variables and fish assemblages in 30 small streams and their subcatchments (area 8-20 km 2) in the Etowah River Catchment (Georgia, USA). We stratified streams and their subcatchments into 3 landcover categories based on imperviousness (20% of subcatchment), and then estimated the degree of hydrologic alteration based on synoptic measurements of baseflow yield. We derived hydrologic variables …


Biodiversity And Biogeography Of The Islands Of The Kuril Archipelago [Abstract], Theodore W. Pietsch, Victor V. Bogatov, Kunio Amaoka, Yuri N. Zhuravlev, Vyacheslav Y. Barkalov, Sarah Gage, Hideki Takahashi, Arkady S. Lelej, Sergey Y. Storozhenko, Noboru Minakawa, Daniel J. Bennett, Trevor R. Anderson, Masahiro Ôhara, Larisa A. Prozorova, Yasuhiro Kuwahara, Sergey K. Kholin, Mamoru Yabe, Duane E. Stevenson, Erin L. Macdonald Jan 2003

Biodiversity And Biogeography Of The Islands Of The Kuril Archipelago [Abstract], Theodore W. Pietsch, Victor V. Bogatov, Kunio Amaoka, Yuri N. Zhuravlev, Vyacheslav Y. Barkalov, Sarah Gage, Hideki Takahashi, Arkady S. Lelej, Sergey Y. Storozhenko, Noboru Minakawa, Daniel J. Bennett, Trevor R. Anderson, Masahiro Ôhara, Larisa A. Prozorova, Yasuhiro Kuwahara, Sergey K. Kholin, Mamoru Yabe, Duane E. Stevenson, Erin L. Macdonald

Faculty Publications

No abstract provided.


Tooth Tissues Of Certain Sharks And Lungfishes, Yasutomo Iwai-Liao, Yoshikage Higashi, Yoshitaka Tamada Dec 1991

Tooth Tissues Of Certain Sharks And Lungfishes, Yasutomo Iwai-Liao, Yoshikage Higashi, Yoshitaka Tamada

Scanning Microscopy

A comparative odontologic study was conducted on teeth and their supporting tissues from extant sharks, fossil sharks, and living lungfishes using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) X-ray microprobe to investigate evolutionary changes in tooth structure of the fishes.

No histological differences between the extant and fossil teeth of lamnoid sharks were observed. The weight percent of calcium in osteodentin of the fossil shark was higher than that in the extant shark. The weight percents of both P and Ca of tooth tissues in the giant extinct shark showed comparatively low values.

Both the upper and lower …


The Distribution Of Minnesota Fishes And Late Pleistocene Glaciation, James C. Underhill Jan 1989

The Distribution Of Minnesota Fishes And Late Pleistocene Glaciation, James C. Underhill

Journal of the Minnesota Academy of Science

No abstract provided.


Life History Tactics Of The Sailfin Molly (Poecilia Latipinna) In Contrasting Environments, Helen L. Large Jan 1985

Life History Tactics Of The Sailfin Molly (Poecilia Latipinna) In Contrasting Environments, Helen L. Large

Retrospective Theses and Dissertations

Life history tactics of three Central Florida populations of Poecilia latipinna were compared to those predicted by life history selection theory. The three populations were sampled monthly for one year. At each sampling period a series of physicochemical measurements were taken to determine the degree of spatial and temporal environmental heterogeneity within each site. Life history traits determined for each population included size at maturity, size specific fecundity, reproductive effort, and length, weight, and condition of offspring. The population inhabiting the most variable environment was characterized by smaller size at maturity, lower size specific fecundity, lower overall reproductive output, and …


Relative Intestine Length And Feeding Ecology Of Freshwater Fishes, David O. Ribble, M H. Smith Jan 1983

Relative Intestine Length And Feeding Ecology Of Freshwater Fishes, David O. Ribble, M H. Smith

Biology Faculty Research

There is a significant relationship between the intestine length (Y) and total body length (X) for 11 species of freshwater fish (Y = 0.08X1.42). Sufficient variation exists about this relationship to indicate important differences among the species' diets. The diets for each species, ranked on a Trophic Index scale determined from literature data, are negatively rank order correlated with the mean relative intestine lengths (rs = -0.67). There is no significant rank order correlation between the Trophic Indices determined from data on stomach contents and the mean relative intestine lengths for fish from a single creek.


Investigations Of Population Structure And Relative Abundance Of Year-Classes Of Buffalo Fishes, Ictiobus Spp., In Lake Sakakawea, North Dakota, David W. Willis May 1978

Investigations Of Population Structure And Relative Abundance Of Year-Classes Of Buffalo Fishes, Ictiobus Spp., In Lake Sakakawea, North Dakota, David W. Willis

Theses and Dissertations

This study was undertaken to investigate the population and abundance of year-classes of the buffalo fishes in Lake Sakakawea, North Dakota. Fish used in this study were obtained from Grasteit Dakota Fisheries, a commercial fishing operation headquartered in Newtown, North Dakota.

Only bigmouth buffalo (Ictiobus cyprinelius) and smallmouth buffalo (Ictiobus bubalus) were collected during this study; no black buffalo (Iciobus niger) were captured. The age and growth of these fish was found to be quite similar to that in other Missouri River mainstem reservoirs. The mean condition factor (K-TL) for the bigmouth was found to be 1.88 and for the …


Effects Of Types 1 And 2 Herpes Simplex Viruses On Several Fish Tissue Culture Systems, Raymond Charles Harry May 1977

Effects Of Types 1 And 2 Herpes Simplex Viruses On Several Fish Tissue Culture Systems, Raymond Charles Harry

Dissertations and Theses

The purpose of this investigation was to observe changes induced by types 1 and 2 herpes simplex viruses (HSV 1 and HSV 2) when these viruses were cultivated in fish cells. The possibility of attempting to use human strains of herpesviruses in order to transform normal fish tissue culture preparations was considered. Three different fish cell cultures were tested: CHSE-214 cell lines were derived from embryonic chinook salmon (Oncorhynchus tshawytscha), and STE-137 cell lines were obtained from embryonic steelhead trout (Salmo gairdneri). Cells isolated from immature ovaries of rainbow trout (Salmo gairdneri) were propagated …