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      Metamorphosis of a sesarmid river crab, Armases roberti: stimulation by adult odours versus inhibition by salinity stress

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      General Information:

      Citation:
      Anger, K. , Torres, G. and Giménez, L. (2006): Metamorphosis of a sesarmid river crab, Armases roberti: stimulation by adult odours versus inhibition by salinity stress , Marine and Freshwater Behaviour and Physiology, 39 (4), 269 - 278 . doi: 10.1080/10236240600986183
      Cite this page as:
      hdl:10013/epic.25984
      DOI:
      10.1080/10236240600986183
      Official URL:
      10.1080/10236240600986183
      Contact Email:
      Klaus.Anger@awi.de
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      Cite this document as:
      hdl:10013/epic.25984.d001
      Abstract:

      In an experimental laboratory study with the megalopa stage of Armases roberti, a freshwater-inhabiting species of crab from the Caribbean region, we evaluated the combined, potentially antagonistic effects of odours from conspecific adults and of stepwise salinity reductions (simulating upstream migration, reaching within 1 week conditions of 2 or freshwater). Neither of these treatments affected the rate of survival, but the duration of development to metamorphosis was significantly (by about 25%) shortened, when odours from conspecific adult crabs were present, regardless of the salinity conditions. Our results indicate that the metamorphosis-stimulating effect of chemical cues from an adult population of A. roberti is far stronger than the potentially retarding effect of increasing hypoosmotic stress. This suggests that the final phase of larval development, including the processes of settlement and metamorphosis, occurs in this species in freshwater habitats, where conspecific populations live.

      Further Details:

      Item Type:
      Article
      Authors:
      Anger, Klaus ; Torres, Gabriela ; Giménez, L.
      Divisions:
      AWI Organizations > Biosciences > Shelf Sea System Ecology
      Programs:
      Helmholtz Research Programs > MARCOPOLI (2004-2008) > CO-MARCOPOLI
      Helmholtz Research Programs > MARCOPOLI (2004-2008) > CO2-Coastal diversity - key species and food webs
      Helmholtz Research Programs > MARCOPOLI (2004-2008) > CO3-Chemical Interactions - ecological function and effects
      Eprint ID:
      15939
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