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Showing 1 to 14 of 14 for “"surrogate species"”.
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Non-lethal methods for assessing the health and status of fish species of conservation concern.
… perturbations on threatened and endangered species. This dissertation focuses on how a commonly occurring relative of a species of conservation concern can be used as a surrogate species for developing and validating nonlethal methods for studying the ecology and ecotoxicology of endangered …
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Fish ecomorphology: predicting habitat preferences of stream fishes from their body shape
… Further, it considered methods for choosing a surrogate species to identify habitat of target species. Morphological discriminant functions were developed using morphological traits of fishes from one river to identify membership in two habitat guild systems (mesohabitat and microhabitat). …
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EVALUATING EMBRYO SURVIVAL OF SURROGATE FISH SPECIES USING MULTIPLE INCUBATORS: CONTINUING EFFORTS TOWARDS REINTRODUCING ARCTIC GRAYLING (THYMALLUS ARCTICUS) INTO LOWER MICHIGAN STREAMS
… <em>Sander vitreus</em> (as Arctic Grayling surrogates) between RSI and FBI in stream and hatchery environments. In addition, I assessed how abiotic and biotic factors influenced survival for rainbow trout within FBIs among three natural streams. Overall, I found that mean survival of rainbow …
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Investigating the interactive effects of ultraviolet-B radiation and pesticides in amphibians
… larvae; (2) X. laevis larvae can be used as a surrogate species for endemic amphibians in risk assessments of pesticides; (3) α-cypermethrin and UVB had synergistic effects on larval growth; and (4) pesticides can increase the exposure and risk of UVB radiation in amphibians by impairing repair …
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Embryotoxicity of dioxin-like chemicals extracted from American eels (Anguilla rostrata) from the St. Lawrence River System
… and its listing as endangered under the Ontario Species at Risk act in June of 2008 in Ontario. Due to their complex life cycle, little is known about eels once they leave their freshwater habitats and migrate to the Sargasso Sea to reproduce. Ocean conditions, habitat destruction, disease, …
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Influence of CO2 on fishes in flowing water environments: implications for a non-physical barrier to movement
… and bighead carp (H. nobilis) are invasive species that have become established in the upper reaches of the Illinois River, and are nearing the connection into Lake Michigan. To prevent the spread of these carp, as well as other fish, carbon dioxide (CO2) is being investigated as a potential …
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Inferring rare bumble bee species occurrences from nontarget bumble bee assemblages
… and generalist foraging tendencies, but many species are experiencing sharp declines. The endangered rusty patched bumble bee (Bombus affinis) is one such species, now occupying only 8% of its historical range. As recovery efforts for B. affinis are hindered by imperfect detection and complex …
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Controlled cultivation techniques for the recovery of threatened fishes in Virginia
… by using closely related, but unthreatened species, to evaluate potential techniques. The surrogate species used were the whitetail shiner, Cyprinella galactura, and the margined madtom, Noturus insignis. I investigated methods to promote gonadal maturation, induce spawning, and rear larvae …
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Feminization in common terns (Sterna hirunda) : relationship to persistent organic contaminants
… with common terns from the same site as a surrogate species. Over seventy percent (11115) of male common tern embryos sampled from this site in 1993 had testes containing areas of ovarian cortical tissue (ovotestes), suggesting that terns may be affected by endocrine-disrupting …
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Identifying suitable habitat of two federally endangered mussels in the Middle Fork and Salt Fork Vermilion rivers
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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Internalization of Escherichia Coli in Apples Under Field and Laboratory Conditions
… ability to internalize the pathogen. Both the surrogate species, E. coli ATCC 25922, and the pathogen, E. coli O157:H7, were used for field and lab studies, respectively. Internalization of E. coli in apples under natural environmental conditions was addressed in the first study using a …
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ECOLOGY AND COEXISTENCE OF SCAPHIRHYNCHUS STURGEON AT MULTIPLE SCALES
… and global declines of many fluvial dependent species. Sturgeons are a group of fluvial dependent species affected by river modifications and may be the most imperiled group of species on Earth. Most sturgeons are threatened across the globe due to a combination of unregulated harvest and …
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The health and biodiversity of the ancestral maya forest: A zooarchaeological perspective
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Sampling Techniques for Juvenile Pallid Sturgeon and the Condition and Food Habits of Sturgeon in the Missouri River Below Fort Randall Dam, South Dakota
… shovelnose sturgeon has been considered a surrogate species to the pallid sturgeon. The objectives of this component of my study were to determine the seasonal food habits and diet overlap between HRJPS and adult shovelnose sturgeon in the Missouri River below Fort Randall Dam. …