Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"mosquitofish"”.
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Dispersal Behavior Of Mosquitofish (gambusia Holbrooki)
Mosquitofish (Gambusia holbrooki) are native to the southeastern United States but invasive elsewhere, and are dominant predators in many ecosystems that they inhabit. Information on dispersal behavior will help better understand and predict mosquitofish metapopulation dynamics and invasions. I …
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Behavioral and Reproductive Plasticity in Eastern Mosquitofish (Gambusia Holbrooki) in Response to Predatory Cues
… closer than fish not exposed to skin extract. Mosquitofish did not display any discernible life-history plasticity in response to predatory cues during a single pregnancy. They did, however, exhibit marked differences in fecundity-mother size relationships between two locations in coastal …
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Artificial Light at Night Alters Physiology, Behavior, and Reproduction in the Western Mosquitofish (Gambusia affinis)
Human population growth and its associated effects have contributed to the rapid decrease of biodiversity worldwide. Artificial light at night (ALAN) is an anthropogenic pollutant that is increasing with the spread of urbanization and may contribute to biodiversity declines. ALAN alters the …
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Overcoming evolutionary history: conditioning the endangered Barrens topminnow to avoid predation by the invasive Western mosquitofish
… of an invasive predator: the Western Mosquitofish (WMF), Gambusia affinis. This study used conditioning to help the BTM escape its evolutionary trap, and data showed that conditioned fish responded significantly different to the presentation of WMF compared to control fish, and …
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A Study of Asymmetry in Mosquitofish Populations in Polluted and Nonpolluted Environments Using a New Scale Staining Technique.
… asymmetry were compared in two populations of mosquitofish (Gambusia affinis) from polluted waters and two populations from nonpolluted waters. Two of the characters studied, pectoral fin rays and lateral line scales, showed no asymmetry in these populations and therefore provided no data for …
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Friends in Low Places: Responses of a Benthic Stream Fish to Intra-Guild Alarm Cues
… (Notropis nubilus), recently-introduced Western Mosquitofish (Gambusia affinis), and native Oklahoma Salamanders (Eurycea tyrnerensis), all of whom are vulnerable to the same predators. We tested the responses of darters to the damage-released alarm cues of conspecifics (positive control), …
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An experimental test of intra- and inter-specific competition between invasive western mosquitofish (Gambusia affinis) and native plains topminnow (Fundulus Sciadicus)
… (Fundulus Sciadicus) and invasive western mosquitofish (Gambusia affinis) at 16, 22, and 28 °C. Data were analyzed using the isodar theory, which assumes that animals are ideally distributed to maximize their fitness and thus their distributions measure the quality and quantity of habitat …
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An assessment of endocrine disrupting potential of a New Zealand pulp and paper mill effluent using rainbow trout Oncorhynchus mykiss and mosquitofish Gambusia affinis
… impacts on two fish species, rainbow trout and mosquitofish using a combined approach of laboratory and on-site mesocosm exposures. Rainbow trout Oncorhynchus mykiss were utilised in a combination of early life stage and juvenile (+1 year) long- and short term exposures. Exposure of rainbow …
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Biological control of Culex mosquitoes using multiple predators
… I demonstrate that the stocking of invasive mosquitofish can impact the overall biotic resistance of communities towards mosquito prey through interguild predation, coupled by naïveté that is often prevalent in previously fishless aquatic ecosystems. Intermediate mosquito predators were naïve …
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Cognitive Abilities in Fish: Biological Predictors and Impact on Reproductive Success
… animals. In Chapter 1, I explore the ability of mosquitofish (Gambusia holbrooki) to express inhibitory control, an essential cognitive trait that inhibits impulsive actions in favour of delayed rewards. I show how sex, age, and personality can impact their inhibitory control. Chapter 2 …
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Cognitive Abilities in Fish: Biological Predictors and Impact on Reproductive Success
… animals. In Chapter 1, I explore the ability of mosquitofish (Gambusia holbrooki) to express inhibitory control, an essential cognitive trait that inhibits impulsive actions in favour of delayed rewards. I show how sex, age, and personality can impact their inhibitory control. Chapter 2 …
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Social learning and its effect on conservation efforts in the Barrens Topminnow: an evaluation of conditioning and social learning as a viable longterm solution to evolutionary traps
The invasive Western Mosquitofish (WMF), Gambusia affinis, has facilitated the extinction and endangerment of multiple freshwater fish species, including the Barrens Topminnow (BTM), Fundulus julisia. In my study, I investigated if BTMs are capable of socially learning conditioned predator …
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Fish and mammals of the lower Calaveras River, Stockton, CA
… threadfin shad (Dorosoma petenense), and western mosquitofish (Gambusia aj]inis). Fish assemblage varied with changes in season and percent coverage of submerged aquatic vegetation (SA V). Bluegill and redear sunfish abundances were positively correlated. Largemouth bass and redear sunfish …
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Reproductive Biology of the Flat Floater Mussel, Anodonta Suborbiculata, Say, 1831 (Mollusca: Unionidae)
… largemouth bass, warmouth, golden shiners, and mosquitofish. The fate of flat floater glochidia during the parasitic phase was monitored at 10, 15 and 20 °C on golden shiners. Mortality of attached glochidia was significantly higher at 20 °C than at 10 or 15 °C. Mean transformation time …
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Oviposition Site Selection By Mosquitoes: Predator-Released Kairomones And Responses To Different Taxa
… the cue) released by Gambusia affinis (Western mosquitofish), Lepomis cyanellus (green sunfish), and Procambarus hayi (straightedge crayfish) when locating oviposition sites. Three paired experiments (Control vs. Predator-conditioned water) were conducted, one for each predator species. A fourth …
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The Degree of Reproductive Isolation in Gambusia affinis and Gambusia geiseri
No abstract prepared.
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Behavioral ecology of coral reef fishes at spawning aggregation sites
… extracted from wild fishes and tested using a mosquitofish assay. Ostracion whitleyi was more toxic than 0. meleagris, refuting the predation-risk hypothesis. A second hypothesis proposes that long ascents are a way for spawning pairs to avoid disturbances by other male conspecifics. …