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Reproductive characteristics of a population of the washboard mussel Megalonaias nervosa (Rafinesque 1820) in the upper Mississippi River

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Reproductive characteristics of a population of the washboard mussel Megalonaias nervosa (Rafinesque 1820) in the upper Mississippi River; 1993; Article; Journal; Journal of Freshwater Ecology; Woody, C. A.; Holland Bartels, L.

Summary

The authors examined monthly and age-specific gametogenic development of the washboard mussel, Megalonaias nervosa, from April 1986 to March 1987 in navigation Pool 10 of the upper Mississippi River. The authors found M. nervosa to be a late tachytictic breeder. Female marsupia contained eggs or glochidia primarily from August (17 degree C) through October (9 degree C). Males were mature from July through October. Most females released their glochidia in October. Only one female was gravid in Nov (3 degree C). Most mussels were sexually mature at 8 years of age and then had an estimated average size of 68 mm (shell height). Only 8% of individuals less than or equal to 4 years of age showed any degree of reproductive development, while [...]

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  • Upper Midwest Environmental Sciences Center (UMESC)

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Harvested on Mon Jul 21 13:56:48 MDT 2014 from MODS XML Service

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Type Scheme Key
local-index unknown 1003158
local-pk unknown 1003158
series unknown Journal of Freshwater Ecology

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citationTypeArticle
journalJournal of Freshwater Ecology
languageEnglish
parts
typevolume
value8
typeissue
value1

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