文章基本信息

标题：Maternal effects of common carp on egg quantity and quality
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作者：Michael J. Weber ; Michael L. Brown
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：2012
卷号：27
期号：3
页码：409-417
DOI：10.1080/02705060.2012.666890
出版社：Taylor & Francis
摘要：Maternal reproductive characteristics can play an influential role in fisheries by affecting offspring traits that can persist to influence year-class formation. We evaluated maternal characteristics of common carp (Cyprinus carpio), a widespread invader that can degrade aquatic ecosystems, to determine the variability of fecundity, egg size and egg energy density. Common carp fecundity increased with female size but was lower than identified in previously published reports. Female length, age, condition, and gonadosomatic index were positively correlated with ovary weight, fecundity, and egg volume, but not egg energy density. Additionally, fecundity was positively correlated with ovary weight and egg volume, but not energy density. Thus, larger and older females in better condition produce more and larger eggs compared to females that are smaller, younger, and in lower condition. These results have implications for understanding common carp reproduction, recruitment dynamics, and management of this species throughout its range.
关键词：fecundity; maternal effects; Cyprinus carpio; egg size; energy density