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 20 of 29 for “"killifish"”.
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A Hydrodynamic Sensory Antenna Used By Killifish for Nocturnal Hunting
… detection of directionality. The surfacefeeding killifish Aplocheilus lineatus is able to hunt in darkness by detecting surface capillary waves with the lateral-line system atop its head. This cephalic lateral line consists of 18 stereotyped mechanosensitive neuromasts, each bordered by fleshy …
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Phenotypic patterns of size and shape in North American killifish
… provides insights as to how fish, in particular killifish (many species of which are widely distributed and abundant in nature, thus making them ecologically important, will deal with these challenges.
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Linking ecological divergence and reproductive isolation: a tale of two killifish
Gene flow and recombination directly oppose genetic differentiation and speciation because they homogenize allele combinations that are unique to each population/species (Felsenstein 1981; Rieseberg 2001; Ortiz-Barrientos, Reiland et al. 2002; Butlin 2005). Under divergence with gene flow, either …
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Effects of copper on the acute ventilatory drive of killifish, Fundulus heteroclitus
… exposure using freshwater-acclimated adult killifish (Fundulus heteroclitus), a model euryhaline teleost. It was found that copper blunts the acute ventilatory response to hypoxia, ammonia, and combined hypoxia and ammonia exposure. Gill morphometry was also examined and it was found that …
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The Role of Polyamines in Osmotic Stress Tolerance in Gulf Killifish Fundulus Grandis
… roles of polyamines in the gills of the Gulf killifish (Fundulus grandis) during hypoosmotic challenge. In addition, the influence of irreversible inhibition of Odc by alpha-DL-difluoromethylornithine (DFMO) was assessed in the gills. Furthermore, the transcription and enzymatic activities of …
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Patterns of protein expression in tissues of the killifish, Fundulus heteroclitus and Fundulus grandis
<p>Fundulus is a diverse and widespread genus of small teleost fish of North America. Due to its high tolerance for physiochemical variation (e.g. temperature, oxygen, salinity), Fundulus is a model organism to study physiological and molecular adaptations to environmental stress. The thesis …
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The Agonistic and Reproductive Behaviors of the Gulf Killifish, Fundulus grandis and Their Physiological Components.
The behavioral repertoire of Fundulus grandis includes 32 acts, 5 of which are found only in the male. The acts are described and categorized by function.Male-male and male-female pairs were observed for agonistic and reproductive behaviors, diel rhythms of behavior, endogenous hormone levels …
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Variation at Major Histocompatibility Complex Class I Loci In Two Killifish Species with Reduced Genetic Variance
… these loci has also been discussed. The marine killifish Rivulus marmoratus is the only vertebrate known to exist in nature in homozygous form. The findings of this study suggest that MHC class I genes at one locus in R. marmoratus have rapidly accumulated variation, particularly in region of …
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Later Life Consequences of Subteratogenic Exposure to a Complex PAH Mixture in the Atlantic Killifish (Fundulus heteroclitus)
… of Fundulus heteroclitus (the Atlantic killifish or mummichog, hereafter referred to as killifish), has adapted to creosote-based polycyclic aromatic hydrocarbons (PAHs) found at the Atlantic Wood Industries (AW) Superfund site in the southern branch of the Elizabeth River, VA, USA. This …
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The ballad of banded killifish: Examining the invasion of a native transplant fish in the Great Lakes region
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-12-01
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Observations on the Life History of the Bayou Killifish, <i>Fundulus pulvereus</i> (Everman 1899) in Mississippi Tidal Marshes
… <em>Fundulus pulvereus</em> (Everman), the bayou killifish. Monthly sampling for <em>F. pulvereus</em> took place in three different Mississippi tidal marshes over a period of 17 months (n=445). Observations on the diet, parasite fauna, and fecundity of the bayou killifish were documented on all …
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Variations in marine microbiomes: from habitat to host
… of reef-associated seawater and Atlantic killifish to better understand habitat and host effects on microbiome structure. In two Caribbean reef systems, I used examined the biogeography of reef water microbes. I found that the microbiome of reef seawater varies with reef system and …
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Diversity and characterization of novel Cytochrome P450 2 genes in the marine teleost Fundulus Heteroclitus
… Characterizations of CYP2 genes were done in the killifish, Fundulus heteroclitus. Multiple cDNAs from three CYP2 subfamilies were isolated from killifish cDNA libraries. Sequence analyses showed that one cloned from liver is related to trout CYP2K1. The other cDNAs were classified into two new …
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Assessing the Live Bait Industry and the Ecological Status of Invasive Cyprinodontiformes (Sheepshead minnow: Cyprinodon variegatus and Gulf killifish: Fundulus grandis) in Texas Streams
… minnow (<em>C. variegatus</em>) and the gulf killifish (<em>F. grandis</em>). Both species were thought to have been introduced into inland Texas waters via bait-bucket releases and have caused native populations of their inland congeners to decline. While I did not find evidence that either …
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Population Variation in the Mitochondrial-DNA of Two Marine Organisms: The Hard Shell Clam <i>Mercenaria spp.</i> and the Killifish, <i>Fundulus Heteroclitus</i>
… of morphological and gene frequency clines in killifish. Effective migration rate was concluded using mtDNA haplotype frequencies for five partially isolated populations. From F<sub>st</sub>, N<sub>e</sub>m was estimated to be 24.09. The corresponding value from a private alleles-type analysis …
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Characterization of P-glycoprotein expression as a multixenobiotic resistance mechanism in fish
… may be responsible for elevated P-gp. Killifish (Fundulus heteroclitus) from a contaminated field sites had higher intestinal P-gp and lower hepatic P-gp than control killifish. In contaminated fish, elevated intestinal P-gp may provide a barrier against absorption of P-gp …
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The effects of natural and anthropogenic stressors on the stress response and tissue-level response in teleost fish
… Horizon oil spill on populations of Gulf killifish (Fundulus grandis) in oil-impacted areas in Louisiana, compared to reference sites in Louisiana, Mississippi, and Alabama. We show evidence of exposure to crude oil coincident with contamination from the Deepwater horizon oil spill in …
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Reproductive Life History of <i>Fundulus jenkensi</i> and Comparative Development of Five Sympatric Fundulid Species
… is known about the life history of this coastal killifish, but a detailed reproductive histology study of <em>F. jenkinsi</em> and a diagnostic key of the early life stages of select members of Fundulidae can provide the foundation needed to accurately identify it and quantify reproductive …
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