Observations on the Alewife, Pomolobus Pseudoharengus (Wilson), in Fresh Wate PDF Download
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Author: Joseph J. Graham
Publisher: University of Toronto Press
ISBN: 1487597738
Category : Nature
Languages : en
Pages : 76
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Book Description
The major study in this investigation was one of growth and form, carried out to evaluate differences in growth rates and body proportions between landlocked Lake Ontario and the anadromous Atlantic alewives. Particular attention was also given to the nature of the annual mortality that is characteristic of P. pseudoharengus in Lake Ontario.
Author: Joseph J. Graham
Publisher: University of Toronto Press
ISBN: 1487597738
Category : Nature
Languages : en
Pages : 76
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Book Description
The major study in this investigation was one of growth and form, carried out to evaluate differences in growth rates and body proportions between landlocked Lake Ontario and the anadromous Atlantic alewives. Particular attention was also given to the nature of the annual mortality that is characteristic of P. pseudoharengus in Lake Ontario.
Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 384
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Book Description
Author: C. W. Threinen
Publisher:
ISBN:
Category : Alewife
Languages : en
Pages : 8
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Book Description
Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 384
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Book Description
Author: Wendell R. Haag
Publisher: Cambridge University Press
ISBN: 1139560190
Category : Nature
Languages : en
Pages : 523
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Book Description
This well-illustrated book highlights freshwater mussels' fabulous diversity, amazing array of often bizarre ecological adaptations and their dire conservation plight. Summarizing and synthesizing historical and contemporary information as well as original research and analysis, the book describes the diverse array of mussel life history strategies and builds a cohesive narrative culminating in the development of explicit frameworks to explain pervasive patterns in mussel ecology. The fascinating and colorful role of mussels in human society is also described in detail, including the little-known pearl button industry of the early 1900s and the wild and often violent shell harvest of the 1990s. The final chapter details humans' efforts to save these fascinating animals and gives a prognosis for the future of the North American fauna. The book provides the first comprehensive review of mussel ecology and conservation for scientists, natural resource professionals, students and natural history enthusiasts.
Author: G. Bauer
Publisher: Springer Science & Business Media
ISBN: 3642568696
Category : Science
Languages : en
Pages : 400
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Book Description
All those who think that bivalves are boring are in the best company. Karl von Frisch is reported to have turned the pages more quickly in texts where bivalves were treated because, according to him, they literally lack any behaviour. The fact that they can filtrate huge amounts of water, burrow into the sedi ment, actively swim, drill holes into rocks and boats or detect shadows with the aid of pretty blue eyes located on the rim of their mantle obviously left v. Frisch unimpressed. Why, then, a book on the large freshwater mussels (Naiads or Unionoida), which on first sight are much less spectacular than the marine ones? The main reason is that they are keepers of secrets which they reveal only on close and careful inspection. This is not only true for the pearls some species produce and which over centuries have contributed to the treasures of bishops and kings, but particularly for their ecology: their life cycles are linked with those of fishes, some can occur in incredible densities and some can live for more than 100 years. Thus, the presence or absence of naiads in a lake or stream has manifold implications.
Author: Gerald K. Schultz
Publisher:
ISBN:
Category : Lakes
Languages : en
Pages : 416
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Book Description
Author: United States. Army. Corps of Engineers. New England Division
Publisher:
ISBN:
Category : Dickey project
Languages : en
Pages : 504
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 998
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Book Description
Author: Great Lakes Fishery Commission
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 788
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Book Description
This manual for the identification of larval fishes of the Great Lakes basin with emphasis on the Lake Michigan drainage treats 24 families and 148 species. In addition to a key to the families, keys were constructed for selected species within some families. Species accounts include descriptions of adult ecology, reproductive biology, diagnostic characters and meristics. A description of the egg is given, as are morphometric, morphological and pigmentation characteristics of yolk-sac larvae, larvae and juveniles. Illustrations of yolk-sac larvae, larvae and juveniles have been included wherever possible and informative.
