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Amphipod Amplexus, The Significance of Ecotypic Variation
Author(s) -
Strong Donald R.
Publication year - 1973
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1934203
Subject(s) - hyalella azteca , predation , biology , ecology , fish <actinopterygii> , zoology , amphipoda , crustacean , fishery
The proportion of the female molt cycle spent in amplexus varies inheritably among several populations of the talitrid amphipod Hyalella azteca. Duration of amplexus is negatively correlated with an index of the intensity of predation by visually orienting fish. As amplexus renders the amphipods more vulnerable to these fish, I hypothesize that this type of predation selects for an abbreviation selects for an abbreviation of the amplexed phased of the female molt cycle.