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Showing 1 to 20 of 51 for “"Fundulus"”.
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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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Fundulus grandis Response to Exogenous LH Injection.
… mammalian gonadotropin injection was assessed in Fundulus grandis, the Gulf killifish. Responsiveness was measured through the reproductive parameters of plasma sex steriod levels (estrogen for the female and testosterone for the male animals) as well as gonadalsomatic indexes, GSI. Females were …
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Convergence of Life History Phenotypes in Two Species of Topminnows, <i>Fundulus notatus</i> and <i>Fundulus olivaceus</i>
… separate along a stream size gradient with <em>Fundulus notatus</em> inhabiting the downstream environment, and <em>F. olivaceus</em> inhabiting the upstream headwater environment. However, there are at least three known drainages where the normal distribution pattern is reversed, and <em>F. …
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Benzo[a]pyrene effects on Fundulus heteroclitus reproductive endpoints
… The aim of this study was to use a fish model, Fundulus heteroclitus, to assess whether BaP exposure adversely impacted reproduction. Adult fish were exposed to waterborne BaP concentrations of (0, 1 or 10 μg/L) for 28 days. Males and females were combined for the second half of the exposure …
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Diet and Feeding-Related Morphometrics of the Blackstripe Topminnow, <i>Fundulus notatus</i>, in Allotropic and Syntopic Populations with the Blackspotted Topminnow, <i>Fundulus olivaceus</i>
<p>The <em>Fundulus notatus</em> species complex consists of three described species: <em>F. notatus</em>, <em>F. olivaceus</em> and <em>F. euryzonus</em>. Both <em>F. notatus</em> and <em>F. olivaceus</em> have broad overlapping ranges with many populations being found within and outside of …
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Female Preference and Prezygotic Isolation In the Fundulus Notatus Species Complex
… mate preference was investigated within the <em>Fundulus notatus</em> species complex, where <em>F. notatus</em> and <em>F. olivaceus</em> hybridize at varying rates across replicate contact zones. Using a free-choice design, behavioral trials were conducted with individuals from populations …
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Studies on the Granule-Moving System of Melanocytes of Fundulus Heteroclitus
<p>Pigment granules in melanocytes of Fundulus heteroclitus exhibit both local movements and long distance intracellular migrations in response to hormones. These movements have been studied and a theory of the granule moving system has been proposed: The granules are in a structured continuum …
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Reproductive Behaviors of Male and Female Blackspotted Topminnows, <i>Fundulus olivaceus</i>
<p>The aim of the study was to characterize the reproductive behaviors of male and female blackspotted topminnows in the Pascagoula Drainage. I focused on phenotypic traits, size and number of dorsolateral spots, in males that possibly could cue a female to choose one male more frequently than …
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Tests of Reproductive Isolation Between the Fishes Fundulus heteroclitus and F. grandis
The closely related killifishes Fundulus heteroclitus and F. grandis hybridize in a small region where their ranges overlap in coastal northeastern Florida. Hybrids of these species are rare in frequency within the contact zone, suggesting the presence of relatively strong reproductive isolation …
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Epigenetic effects of benzo(a)pyrene in Fundulus heteroclitus and Danio rerio
… exposures. Our goal was to use two fish models, Fundulus heteroclitus and Danio rerio (zebrafish), to study the benzo(a)pyrene (BaP) effects on DNA methylation status and whether the alterations could contribute to BaP-mediated reproductive and developmental toxicities. Initially, we used …
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Sexual Dimorphism and Trophic Trait Evolution in the Carolina Bay Fundulus Complex
… to date little studied system, the Carolina Bay Fundulus species complex, in which patterns of convergence and divergence of body shape (and even speciation) have been suggested to be driven largely by predation. I investigated this complex for the trophic trait evolution seen in other fish …
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The Role of Polyamines in Osmotic Stress Tolerance in Gulf Killifish Fundulus Grandis
… 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 Arg, Odc …
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Molecular regulation of the induction of cytochrome P-450E in the estuarine fish Fundulus heteroclitus
… P-450E) was examined in the estuarine teleost Fundulus heteroclitus. Antibodies were a primary tool in this work; their specificity and cross reactivity with other species were investigated by immunoblot and catalytic inhibition studies. Scup (Stenotomus chrysops) P-450E protein had been …
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Diversity and characterization of novel Cytochrome P450 2 genes in the marine teleost Fundulus Heteroclitus
… 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 subfamilies, …
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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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Synthesis and Evaluation of Naturally Occuring Halogenated Bipyrroles in a Relevant Marine Species, Fundulus Heteroclitus
… toxicity in a marine relevant species, Fundulus heteroclitus. We measured also the induction of the cytochrome P4501A (CYP1A) gene through activation of AhR signaling pathway by HDBPs. Fundulus are considered to be the "premier teleost model" in marine biology research, having several …
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Diversity and characterization of novel Cytochrome P450 2 genes in the marine teleost Fundulus Heteroclitus
Thesis (Ph. D.)--Joint Program in Biological Oceanography (Massachusetts Institute of Technology, Dept. of Biology; and the Woods Hole Oceanographic Institution), 1998.
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Reproductive Life History of <i>Fundulus jenkensi</i> and Comparative Development of Five Sympatric Fundulid Species
<p><em>Fundulus</em> <em>jenkinsi</em> is recognized federally and within the state of Mississippi as a Species of Concern. Little 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 …
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