The Superfamily Mactroidea (Mollusca:Bivalvia) in American Waters

The Superfamily Mactroidea (Mollusca:Bivalvia) in American Waters PDF

Author: Javier H. Signorelli

Publisher:

Published: 2019

Total Pages: 151

ISBN-13: 9783030290986

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This book identifies all valid species belonging to the superfamily Mactroidea living in American waters, distributed across fourteen biogeographical provinces. It also provides an updated classification of the widely occurring Mactroidea superfamily, which comprises eight subfamilies grouped into four families: Mactridae (Lamarck, 1809); Anatinellidae (Deshayes, J.Gray 1853); Cardiliidae (Fischer, 1887) and Mesodesmatidae (J. Gray, 1840). The species included in this superfamily are known to have existed in North America since the Early Cretaceous.

The Superfamily Mactroidea (Mollusca:Bivalvia) in American Waters

The Superfamily Mactroidea (Mollusca:Bivalvia) in American Waters PDF

Author: Javier H. Signorelli

Publisher: Springer Nature

Published: 2019-11-04

Total Pages: 151

ISBN-13: 3030290972

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This book identifies all valid species belonging to the superfamily Mactroidea living in American waters, distributed across fourteen biogeographical provinces. It also provides an updated classification of the widely occurring Mactroidea superfamily, which comprises eight subfamilies grouped into four families: Mactridae (Lamarck, 1809); Anatinellidae (Deshayes, J.Gray 1853); Cardiliidae (Fischer, 1887) and Mesodesmatidae (J. Gray, 1840). The species included in this superfamily are known to have existed in North America since the Early Cretaceous.

Bivalve Seashells of Western North America. Marine Bivalve Mollusks from Arctic Alaska to Baja California

Bivalve Seashells of Western North America. Marine Bivalve Mollusks from Arctic Alaska to Baja California PDF

Author: Eugene V. Coan

Publisher: Paul Valentich-Scott

Published: 2000-05-10

Total Pages: 774

ISBN-13: 0936494301

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The culmination of a ten-year study, Bivalve Seashells of Western North America treats all bivalve mollusks living from northern Baja California, Mexico to Arctic Alaska. A total of 472 species are described and illustrated with detailed photographs and drawings. All habitats in the region are included from the intertidal splash zone to the abyssal depths of the ocean basins. The book has over 4,800 complete bibliographic references to the bivalves, including citations on the biology, physiology, ecology, and taxonomy of this commercially and biologically important group. Character tables and dichotomous keys assist the reader in identification. Also included in the 764 page book is an illustrated key to the superfamiles of the region, and a complete glossary.

Distribution and Zoogeography of the Bivalvia of the Eastern Pacific Ocean

Distribution and Zoogeography of the Bivalvia of the Eastern Pacific Ocean PDF

Author: F. R. Bernard

Publisher:

Published: 1991

Total Pages: 80

ISBN-13:

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The incidence of existing marine fauna by latitude and depth is recorded for the Eastern Pacific Ocean and offshore islands. Hypotheses concerning long and short term factors influencing the coast-wide distribution of the bivalve fauna are formulated and examined. Consideration is given to global effects of plate tectonics, continental displacement and environmental factors. Ordination and clustering techniques are used to examine the size and distribution of zoogeographic provinces. Provincial boundaries are presented and the characteristics of these provinces are described.

The Brackish Water Clam Rangia Cuneata as Indicator of Ecological Effects of Salinity Changes in Coastal Waters

The Brackish Water Clam Rangia Cuneata as Indicator of Ecological Effects of Salinity Changes in Coastal Waters PDF

Author: Sewell Hepburn Hopkins

Publisher:

Published: 1973

Total Pages: 270

ISBN-13:

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In the search for a laboratory test that could be used to determine when estuarine salinity changes were favorable or unfavorable, salinities in the range from 0 to 38 were tested on adult Rangia clams for effects on survival; regulation of internal salinity; intake, use and release of amino acids; respiration; glycogen use under aerobic and anaerobic conditions; feeding rate; ciliary activity; uptake of glucose; glycogen storage and 'index of condition' in natural environments through a seasonal cycle; carbohydrate-digesting enzymes; and reproduction. It was determined that Rangia cuneata has a system of compensating reactions that allows it to adjust to changes in salinity over the range from 0 to 38 ppt and over the temperature range from 10 to 35C without harm. It was concluded from these and further studies that the key to the welfare of a Rangia population is not the physiology of the adult individuals, but reproduction and recruitment. The keys to the use of Rangia cuneata as an indicator were found to be two facts: (1) a change in salinity, either up from near 0 or down from 15 ppt and above, is necessary to induce spawning; (2) the embryos and early larvae can survive only in salinities between 2 and 10 (or 15) ppt. (Modified author abstract).

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