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Showing 1 to 20 of 62 for “"Etheostoma"”.
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Early Development of the Stippled Darter, Etheostoma Punctulatum and Arkansas Darter, Etheostoma Cragini
… developmental stages of the stippled darter (Etheostoma punctulatum) and the Arkansas darter (E. cragini) were compared. The Arkansas darter had a smaller egg (1.5 mm average diameter) and prolarva at hatching (4.0 mm) than the stippled darter, which had an average egg diameter 1.7 mm and …
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Egg Maturation and Fecundity in Etheostoma
The problem of estimating fecundity in darters (Etheostoma and Percina) was discussed and a new definition of fecundity proposed. Estimates of fecundity in four species of Etheostoma was determined by multiplying the number of oocytes (≥0.3 mm) recruited per week times the number of weeks in the …
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Predator Recognition Learning in Rainbow Darters (Etheostoma Caeruleum)
I investigated whether rainbow darters (Etheostoma caeruleum) could learn to associate cues from an unfamiliar predator with a known fright stimulus (darter alarm cues) through the process of classical conditioning. Darters in the experimental group (n=32) were trained using their alarm cues paired …
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Life History of the Stippled Darter, Etheostoma Punctulatum
… of the life history of the stippled darter, Etheostoma punctulatum, were studied in the Spring River, Missouri. A total of 481 specimens was collected from 3 March, 1983 to 19 April, 1984. Females attained a maximum standard length of 85 mm and males 83 mm. Both sexes had a longevity of …
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A Comparative Ecological Study of Two Sister Species of Darters in Kentucky, <i>Etheostoma Kantuckeense</i> and <i>Etheostoma Lawrencei</i>
<i>Etheostoma kantuckeense</i> and <i>E. lawrencei </i>are former members of the wide ranging <i>E. spectabile</i> species complex. <i>Etheostoma kantuckeense</i> is endemic to the Barren River Basin in Southern Kentucky and Northern Tennessee, while <i>E. lawrencei</i> occurs in the Green River, …
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The Life History of the Yoke Darter, Etheostoma Juliae
Aspects of the life history of the yoke darter, Etheostoma juliae Meek, were studied in the James River, Missouri. A total of 652 specimens was collected from September, 1981 through September, 1982. Yoke darters attained a maximum standard length of 71 mm and had a maximum longevity of slightly …
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Comparison Of Spawning Habitat And Nest Density Between Buck Darter (etheostoma Nebra) And Striped Darter (etheostoma Virgatum) Populations In The Cumberland River Drainage, Kentucky
<p>The Buck Darter (Etheostoma nebra) is an imperiled, small-stream species in the Cumberland River drainage in southern Kentucky. It was originally thought to be a population of the Striped Darter (E. virgatum) species and was prevalent throughout the Buck Creek system. It was separated from the …
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Conservation Genetics and Distribution of the Yazoo Darter (Etheostoma Raneyi)
The Yazoo Darter is a range-restricted endemic fish in north-central Mississippi. Because the limited and fragmented range of this species puts it at risk of extinction, the Yazoo Darter has been classified as vulnerable or sensitive by several agencies and conservation organizations. However, the …
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Experience With Chemical Cues Influences Subsequent Behavior of Rainbow Darters, Etheostoma Caeruleum
… to determine whether rainbow darters, Etheostoma caeruleum, alter their behavior following experience with predatory and conspecific stimuli. First, I tested whether darters could learn to associate the color of a predator model with danger. In one experiment, I used standard …
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Systematic Studies of the Orangethroat Darter, Etheostoma Spectabile, Complex (Percidae: Subgenus Oligocephalus)
… recognized as the orangethroat darter, Etheostoma spectabile, with an emphasis on populations occurring south of the Ohio River in Kentucky and Tennessee and a reexamination of populations occurring in the Ozarks, has revealed the existence of nine previously unknown taxa and confirmed …
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Systematics of the North-American Percid Fishes of the Subgenus Microperca, Genus Etheostoma
Made available in DSpace on 2014-12-14T16:11:13Z (GMT). No. of bitstreams: 1 7803950.pdf: 7458437 bytes, checksum: c46e81eb15913bc3f13c750f4b8a84ff (MD5) Previous issue date: 1977
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Effects of Turbidity on Anti-Predator Response and Foraging Behavior in the Fountain Darter, Etheostoma fonticola
… The federally endangered fountain darter (Etheostoma fonticola) is an important species for investigating the impacts of turbidity on behavior. Etheostoma fonticola is endemic to the clear, spring-fed waters of the San Marcos and Comal Rivers. These rivers are currently subject to a number …
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Mating behavior and the effects of turbidity on preferences for size in the fountain darter, Etheostoma fonticola
… well as mating preferences. The fountain darter, Etheostoma fonticola, is federally endangered making it an especially important species for examining the effects of turbidity on social behavior. Etheostoma fonticola is endemic to only two clear, spring-fed rivers in central Texas that are …
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Understanding key factors influencing habitat quality for the endangered fountain darter (Etheostoma fonticola) in the Comal River.
The research in this thesis was divided into 3 main studies that took place in Landa Lake: water column, sediment, and plant nutrient analyses, an herbivory and soil fertility experiment, and a spatial study of diel dissolved oxygen dynamics. Nutrient data were collected via water samples, nutrient …
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Habitat and Imperilment of the Candy Darter <i>Etheostoma osburni</i> in the New River Drainage, USA
… imperiled highland stream fish, the Candy Darter Etheostoma osburni. In Chapter 2, I asked (1) does micro-habitat suitability correlate with the "robustness" (i.e., viability) of four distinct populations? In Chapter 3, I expanded the extent of investigation, and asked (2) which environmental …
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Response of Three Species of Darters of the Genus Etheostoma to Chemical Alarm Signals From Conspecifics and Congeners
Prior to this study, seven species of darters (Pisces: Percidae) have been identified as having a chemical alarm substance, but it is not known how widespread the chemical alarm substance is within the family Percidae. It has been hypothesized that percid alarm substance is contained in epidermal …
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Establishing Patterns in Vegetation Associations of the Fountain Darter Etheostoma fonticola in the San Marcos and Comal Rivers of Texas
… and fish communities. The Fountain Darter Etheostoma fonticola, found only in spring systems of the San Marcos and Comal rivers in central Texas, is reported to associate with vegetation for feeding, reproduction, and refuge. Descriptions of associations with vegetation range from preferred …
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