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Estimating Daily Growth Of Age-0 Channel Catfish In A Free-Flowing, Commercially Exploited Midwestern River, Kaleb B. Wood
Estimating Daily Growth Of Age-0 Channel Catfish In A Free-Flowing, Commercially Exploited Midwestern River, Kaleb B. Wood
Masters Theses
The larval stage in fishes is an important stage in the life history, as their survival dictates the ability of the population to sustain itself as an adult population. While there is a plethora of information available for juvenile and adult life stages of Channel Catfish (Ictalurus punctatus), very little is understood about their larval life stage. This study sought to determine overall density, growth rates, and size structure of cohorts of age-0 Channel Catfish during a study year on the Wabash River. In 2018, I sampled age-0 Channel Catfish using a benthic trawl from May to September. …
Asian Carp Population Status And Reproductive Potential In Illinois River Tributaries, Clinton Wesley Morgeson
Asian Carp Population Status And Reproductive Potential In Illinois River Tributaries, Clinton Wesley Morgeson
Masters Theses
Large floodplain rivers are among the most complex natural systems characterized by exchange between the river and its floodplain. Information regarding fishes in main channel habitats is abundant, however much less understanding extends into their tributaries. Tributaries of large rivers provide critical habitats for main channel fishes, important for foraging, spawning, and refuge. In addition to native diversity, large rivers are host to multiple exotic species invasions, threatening biodiversity, ecosystem function, and habitat quality. Two notorious invaders are Silver Carp (Hypophthalmichthys molitrix) and Bighead Carp (H. nobilis), collectively Asian Carp, presenting an imminent threat of invasion …
The Relative Weight (Wr) Condition Index As A Predictor Of Growth, Prey Abundance And Environmental Conditions, Hongsheng Liao
The Relative Weight (Wr) Condition Index As A Predictor Of Growth, Prey Abundance And Environmental Conditions, Hongsheng Liao
Masters Theses
We evaluated the relative weight (Wr) condition index for assessment of growth, prey availability and environmental conditions in fish populations. Standard weight (Ws) equations for pumpkinseed (Lepomis gibbosus) and golden shiner (Notemigonus crysoleucas) from 302 pumpkinseed and 285 golden shiner populations, with well over 10,000 fish of each species, were developed with regression-line-percentile (RLP) technique. The proposed Ws equation in metric units for pumpkinseed is log10Ws = -5.179 + 3.237 log10TL, and for golden shiner is log10Ws = -5.593 + 3.302 log10TL. The English-unit versions of these equations were also developed. …
The Southern Redbelly Dace, Phoxinus Erythrogaster (Rafinesque), In Clark County, Illinois, Susan C. Darrow
The Southern Redbelly Dace, Phoxinus Erythrogaster (Rafinesque), In Clark County, Illinois, Susan C. Darrow
Masters Theses
Population and feeding ecology of the southern redbelly dace, Phoxinus erythrogaster (Rafinesque), was studied at Rocky Branch Nature Preserve, sections 29 and 30, T12N, R12W in Clark County, Illinois. Three stations designated along the eastern portion of Rocky Branch stream were seined bimonthly July through September, 1987. The length/frequency distribution curve constructed for the 358 dace collected determined Age class 0 to be dace less than 39mm, age classes I and II were indistinguishable because of overlap of fish lengths, and age class III was determined to be dace between 69 and 74mm. Other species encountered in abundance during this …
Analysis Of The Capture-Recapture Method Of Determining Fish Population Size In A Pond Community, Richard E. Hall
Analysis Of The Capture-Recapture Method Of Determining Fish Population Size In A Pond Community, Richard E. Hall
Masters Theses
No abstract provided.