EBookClubs

Read Books & Download eBooks Full Online

EBookClubs

Read Books & Download eBooks Full Online

Book Population Biology of Yellow Perch in Southern Lake Michigan 1971 79

Download or read book Population Biology of Yellow Perch in Southern Lake Michigan 1971 79 written by LaRue Wells and published by . This book was released on 1983 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was based mainly on gill-net collections of yellow perch made during July and August 1971-79, in southern Lake Michigan at Grand Haven, Saugatuck, South Haven, Benton Harbor, and New Buffalo, Michigan; Michigan City and Gary, Indiana; Waukegan, Illinois; and Milwaukee, Wisconsin. Geographical abundance varied and were partly attributable to differences in fishing mortality.

Book Fluctuations in the Population Structure of Yellow Perch Perca Flavescens Mitchill in Saginaw Bay Lake Huron

Download or read book Fluctuations in the Population Structure of Yellow Perch Perca Flavescens Mitchill in Saginaw Bay Lake Huron written by Salah el-Din Zarka and published by . This book was released on 1957 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Yellow Perch Perca Flavescens Population Characteristics in Lake Michigan

Download or read book Yellow Perch Perca Flavescens Population Characteristics in Lake Michigan written by Thomas Sherman McComish and published by . This book was released on 1977 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Simulated Forecasting of Yellow Perch Perca Flavescens Relative Population Density for Indiana Waters of Lake Michigan

Download or read book Simulated Forecasting of Yellow Perch Perca Flavescens Relative Population Density for Indiana Waters of Lake Michigan written by Tim A. Cwalinski and published by . This book was released on 1996 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fecundity Food Habits and Certain Allometric Features of the Yellow Perch Perca Flavescens Mitchell Before Operation of a Pumped Storage Plant on Lake Michigan

Download or read book Fecundity Food Habits and Certain Allometric Features of the Yellow Perch Perca Flavescens Mitchell Before Operation of a Pumped Storage Plant on Lake Michigan written by Dan Curtis Brazo and published by . This book was released on 1973 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Diet of Yellow Perch Perca Flavescens in Lake Michigan Near Ludington

Download or read book The Diet of Yellow Perch Perca Flavescens in Lake Michigan Near Ludington written by Douglas Lee Peterson and published by . This book was released on 1993 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Spatial and Temporal Variation in Lake Huron Yellow Perch Perca Flavescens Life History Traits

Download or read book Spatial and Temporal Variation in Lake Huron Yellow Perch Perca Flavescens Life History Traits written by Ryder Jace Rutko and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of fish population structure allows fisheries managers to account for potentially different responses of discrete groups to external stressors. Life history traits are very useful indicators of population structure because they provide information about fish populations that incorporates elements of genetics, environment, and resource use simultaneously. In Lake Huron, the yellow perch (Perca flavescens) is managed based on 17 geographic management units; however, it is unknown if management units accurately represent discrete perch groups. Furthermore, it is unclear whether yellow perch population structure changed temporally over the course of the major ecosystem shift in the early 2000s, where invasive mussels decreased zooplankton and benthic invertebrate abundance, altered nutrient and energy distribution, and reduced lake productivity. Here, I used data from the Ontario Ministry of Natural Resources and Forestry's Lake Huron Index Netting Program to derive sex-specific life history traits for yellow perch including size at maturity, age at maturity, maximum size, lifespan, and growth at age 2 from contemporary (2009-2018) and historical (1990-1999) timeframes. In the first part of my study, I examined how yellow perch were spatially structured in Lake Huron. Generalized linear mixed models showed that yellow perch life history traits varied with location and depth, but primarily with latitude. Male maximum size was 1.1-fold greater at southernmost sites (276.3 ± 4.6 mm) compared to northernmost sites (247.7 ± 3.2 mm), while female maximum size was 1.1-fold greater at southernmost sites (318.5 ± 1.3 mm) compared to northernmost sites (293.9 ± 8.1 mm). Longitudinal and depth-based variation existed in fewer life history traits. Female maximum size was 1.2-fold greater at westernmost sites (293.9 ± 8.1 mm) compared to easternmost sites (244.2 ± 12.4 mm). Male growth at age 2 was 1.2-fold greater at deeper sites (160.0 ± 11.4 mm) compared to shallower sites (131.1 ± 0.3 mm), while female growth at age 2 was 1.2-fold greater at deeper sites (166.1 ± 16.2 mm) compared to shallower sites (139.6 ± 4.0 mm). I found 6 discrete clusters of yellow perch in Lake Huron based on variation in life history trait values, encompassing fish in the (1) South Basin, which were superior in growth, maturity, and lifespan; (2) Main Basin, which grew fast, but died fast; (3) North Channel, which had average growth and maturity, and lived long; (4) northeast Georgian Bay, which were short lived, slow growers; (5) central Georgian Bay, which had slow growth and fast maturity, but died quickly; and (6) south Georgian Bay, which had average growth and maturity, but died quickly. In the second part of my study, I found that yellow perch life history trait values showed no significant temporal variation. The only life history trait that was different before and after the major ecosystem shift was male maximum size, which increased on average 5% from 232.9 ± 23.3 mm to 244.6 ± 30.6 mm. The influence of location and depth varied across timeframes depending on the life history trait analyzed, but did not follow any specific pattern. Clusters of perch identified based on combinations of life history traits were similar in the contemporary and historical datasets. Current management units appear to adequately represent yellow perch population structure in Lake Huron, which suggests that no major change to the spatial arrangement of these management units is necessary. The discovery of no change in life history values over time despite the major ecosystem shift is surprising, and suggests that recent population declines are not via major shifts in the parameters I assessed.

Book AGE AND GROWTH OF THE YELLOW PERCH PERCA FLAVESCENS MITCHILL IN LAKE ERIE

Download or read book AGE AND GROWTH OF THE YELLOW PERCH PERCA FLAVESCENS MITCHILL IN LAKE ERIE written by FRANK. JOBES and published by . This book was released on 1940 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Yellow Perch Walleye and Sauger Aspects of Ecology Management and Culture

Download or read book Yellow Perch Walleye and Sauger Aspects of Ecology Management and Culture written by John Clay Bruner and published by Springer Nature. This book was released on 2021-11-21 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Walleye, one of the most sought-after species of freshwater sport fishes in North America, has demonstrated appreciable declines in their numbers from their original populations since the beginning of the 20th century. Similarly, Yellow Perch, once the most commonly caught sport fish and an important commercial species in North America, have also shown declines. Compiling up-to-date information on the biology and management of Walleye, Sauger, and Yellow Perch, including research on systematics, genetics, physiology, ecology, movement, population dynamics, culture, recent case histories, and management practices, will be of interest to managers, researchers, and students who deal with these important species, particularly in light of habitat alterations, population shifts, and other biotic and abiotic factors related to a changing climate.