Molecular evidence on evolutionary switching from particle-feeding to sophisticated carnivory in the calanoid copepod family Heterorhabdidae: drastic and rapid changes in functions of homologues

DOI Web Site 被引用文献2件 参考文献62件
  • Takeshi Hirabayashi
    Takehara Marine Science Station, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan
  • Susumu Ohtsuka
    Takehara Marine Science Station, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan
  • Makoto Urata
    Takehara Marine Science Station, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan
  • Ko Tomikawa
    Graduate School of Education, Hiroshima University, Higashi-Hiroshima, Japan
  • Hayato Tanaka
    Takehara Marine Science Station, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan

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ABSTRACTThe oceanic calanoid copepod family Heterorhabdidae is unique in that it comprises both particle-feeding and carnivorous genera with some intermediate taxa. Both morphological and molecular (nuclear 18S and 28S rRNA) phylogenetic analyses of the family suggest that an evolutionary switch in feeding strategy, from transitions of typical particle-feeding through some intermediate modes to sophisticated carnivory, might have occurred with the development of a specially designed ‘poison’ injection system. In view of the small amount of genetic differentiation among genera in this family, the switching of feeding modes and re-colonization from deep to shallow waters might have occurred over a short geological period since the Middle to Late Miocene.

収録刊行物

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