Geographic Variation among Herbivore Populations in Tolerance for a Chemically Rich Seaweed

  title={Geographic Variation among Herbivore Populations in Tolerance for a Chemically Rich Seaweed},
  author={Erik E Sotka and Mark E Hay}
Previous investigations have shown that the sedentary amphipod Ampithoe longimana escapes consumers by selectively living on and eating chemically defended seaweeds in the genus Dictyota. However, A. longimana and Dictyota overlap only in the southern portion of the amphipod’s range; Dictyota is not available to amphipods from more northerly regions. We used this disjunction in distribution to test the hypothesis that A. longimana populations co-occurring with Dictyota would have greater… CONTINUE READING


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