Evaluation of Feeding Strategies for First-feeding Yellow Perch (Perca Flavescens) Fry
Author: Jon James Amberg
Publisher:
Published: 2001
Total Pages: 244
ISBN-13:
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Author: Jon James Amberg
Publisher:
Published: 2001
Total Pages: 244
ISBN-13:
DOWNLOAD EBOOKAuthor: Brian Wai Hung Wong
Publisher:
Published: 1972
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKAuthor: Brian Wai Hung Wong
Publisher: National Library of Canada
Published: 1972
Total Pages: 92
ISBN-13:
DOWNLOAD EBOOKAuthor: Michael Alan Oetker
Publisher:
Published: 1998
Total Pages: 450
ISBN-13:
DOWNLOAD EBOOKAuthor: Michael A. Henderson
Publisher:
Published: 1976
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKDistribution, mortality, growth, production and feeding habits of perch fry and their effect on the Daphnia pulicaria population of West Blue Lake was investigated. Perch hatched in the littoral zone in early June and moved into the pelagic zone 7 to 14 days later when they were 9 - l0 mm in length. Perch fry remained in the pelagic zone until they reached a length of approximately 25 - 30 mm in mid-July, and then returned to the littoral area. Instantaneous daily mortality rates ranged from .017 in areas of low perch fry abundance to .140 in areas of high perch fry abundance. From hatching until mid-August perch fry increased in length and dry weight by a factor of 10 and 2616 respectively. Growth occurred in two distinct stanzas. The first stanza, from hatching until the beginning of the pelagic phase, was characterized by a low level of feeding and a slow growth rate, while the second stanza, lasting for the remainder of the summer, was characterized by a high level of feeding and a fast growth rate. Variation in the energy intake and growth of perch fry in different parts of the lake was directly dependent upon the abundance of Dacphnia pulicaria- ... Decreases in the abundance of Daphnia pulicaria in areas of the lake with low numbers of perch fry indicated that these populations may decline independently of fish predation ...
Author:
Publisher:
Published: 1977
Total Pages: 330
ISBN-13:
DOWNLOAD EBOOKAuthor: David Ellis Kenaga
Publisher:
Published: 1975
Total Pages: 134
ISBN-13:
DOWNLOAD EBOOKAuthor: Hyung Tack Huh
Publisher:
Published: 1975
Total Pages: 442
ISBN-13:
DOWNLOAD EBOOKAuthor: Carmen Tattersfield
Publisher:
Published: 2013
Total Pages: 114
ISBN-13:
DOWNLOAD EBOOKAuthor: John Clay Bruner
Publisher: Springer Nature
Published: 2021-11-21
Total Pages: 332
ISBN-13: 3030806782
DOWNLOAD EBOOKWalleye, 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.