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Showing 1 to 19 of 19 for “"Larval Fishes"”.
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Distribution, growth, and transport of larval fishes and implications for population dynamics
The early life stages of marine fishes play a critical role in population dynamics, largely due to their high abundance, high mortality, and ease of transport in ocean currents. This dissertation demonstrates the value of combining larval data, collected in the field and the laboratory, with model …
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Spatial and temporal distribution of larval fishes in a large tidal river.
There are few published studies of larval fish assemblages from unregulated, tidal freshwater rivers. Patterns in the spatial and temporal distribution of larval fishes in the Mattaponi River were examined. Sampling took place on a weekly basis from February through August, 2006 and 2007. Larval …
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Distribution, growth, and transport of larval fishes and implications for population dynamics
The early life stages of marine fishes play a critical role in population dynamics, largely due to their high abundance, high mortality, and ease of transport in ocean currents. This dissertation demonstrates the value of combining larval data, collected in the field and the laboratory, with model …
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The Occurence, Abundance and Distribution of Populations of Larval Fishes in Wheeler Reservoir, Alabama
This study of the larval fishes of Wheeler Reservoir deals with the data from the first year (1971) of a continuing, preoperational icthyofaunal monitoring program in the area of the Browns Ferry Nuclear Electric Generating Plant on Wheeler Reservoir, Alabama. The larval fish study is one part of a …
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Use of main channel and shallow-water habitat by larval fishes in the lower Missouri River
… organized in a spatial hierarchy to characterize larval fish nursery habitat within the lower Missouri River. Native carpsucker spp./buffalo spp. (Carpiodes spp./Ictiobus spp.) and chub spp. (Macrhybopsis spp.) catch-per-unit-effort (CPUE) was higher within sandbar aquatic terrestrial transition …
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Food Habits and the Utilization of Drift Organisms by Larval Fishes in the Middle Fork of Drake's Creek, Kentucky
… drift and a total of seventeen taxa, including larval fish, were identified in the stomach analysis. Eggs, rotifers, hydracarina, and diptera represented the greatest component of the drift comprising 34%, 32%, 8%, and 6%, respectively. The major organisms observed in the gut analysis included …
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Distribution of larval fishes in the Winfield Pool, Kanawha River, and direct impacts of commercial navigation traffic on larval fish survival
Distributions of larval fishes in the Winfield Pool, Kanawha River, West Virginia, were determined by sampling two sites with bongo and push nets. Cyprinids, clupeids, and <i>Aplodinotus grunniens</i> dominated collections. Main channel densities were a fraction of the densities along the …
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Influence of Natural and Anthropogenic Environmental Variability on Larval Fish Diet, Growth, and Condition in the Northcentral Gulf of Mexico
… other sources. Early life history stages of fishes are especially vulnerable to environmental variability created by freshwater discharge. The objectives of this study were to describe the available prey field, diet, growth and condition of larval fishes with respect to various effects of …
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Deepwater Horizon Impacts on the Diet, Growth, and Condition of Larval Spanish Mackerel (<i>Scomberomerus maculatus</i>)
… oil spill (DWHOS) coincided with the pelagic larval stages of many valued commercial and recreational fishes in the northern Gulf of Mexico. Larval fish survival and eventual recruitment into adult populations may have been impacted by changes in the planktonic food web caused by the release …
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Evaluation of the Larval Fish Community in the Missouri River Below Garrison Dam, North Dakota
… to 13.9°C by mid-August. Two hundred three larval fishes were collected in 1993; in 1994, 523 larval fishes were collected. Overall catch per unit of effort (CPUE) was 0.018 larvae/m3 in 1993 in a net with 0.360 mm mesh (bar measure). In 1994, I collected 0.028 larvae/m3 in the 0.360 mm mesh …
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Ontogenetic Changes and Environmental Hypoxia: Responses of Two Fish Species to Low Oxygen Concentrations at Early Life Stages
… are more tolerant of hypoxic conditions than larval stages, there is little information to support this assumption. To determine whether reduced concentrations of dissolved oxygen (DO) affect fishes differently during various early life stages, I examined the responses of two species of fish …
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Influence of parental swimming stamina on the cardiac and metabolic performance of larval zebrafish (Danio rerio).
… cardio-respiratory support for locomotion in larval fishes has not been determined. Is the expression of the suite of parental traits enabling superior swimming stamina in their offspring dependent upon their achieving juvenile/adult morphology, or does it appear earlier in their larvae? To …
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Distribution, Relative Abundance, and Reproductive Seasonality of Larval Fish in the Red River
… are crucial factors that affect survival of larval fish. To understand temporal and spatial variation in larval fishes in the Red River, samples were collected from the Red River and North Dakota tributaries using ichthyoplankton nets. Collections were made during the spring and summer of …
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Seasonal Investigation of Native Fishes and Their Habitats in Missouri River and Yellowstone River Backwaters
… component for certain life stages of native fishes; however, documented relationships are limited. During this study, I monitored fishes, invertebrates, and habitats to help determine the importance of backwaters to native fishes of various life stages, and to assess the changes that occur in …
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Biology of Age-1 and Older Yellow Perch in West-Central Minnesota Lakes
… in diet, and if age-1 and 2 yellow perch used larval fishes as a source of prey. Results from spring trap netting in 1999 indicated that yellow perch in the four study lakes exhibited slower growth than the Minnesota statewide average and rarely reached total lengths of 20 cm. Yellow perch …
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Status and Distribution of Fishes in Tributaries of the Garrison Reach of the Missouri River, North Dakota
… had limited historic distributions, whereas many fishes with widespread distributions were stable or expanding. Moreover, many of the species classified stable or expanding were habitat generalists. Fish assemblages in tributaries increased in similarity at a rate of 3.3%, suggesting that …
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Recruitment of Bluegill and Yellow Perch in Nebraska Sandhills Lakes: Integrating Multiple Life Stages
… Perca flavescens are important, native sport fishes to Nebraska Sandhills lakes. Recruitment dynamics of the fish populations within a given community will ultimately structure the fish communities. I conducted a multiple life-stage investigation of bluegill and yellow perch recruitment in …