Temporal window of receptivity and intraspecific variability in the responsiveness to metamorphosis-stimulating cues in the megalopa of a semi-terrestrial crab, Sesarma curacaoense
نویسنده
چکیده
P. GEBAUER1,2, K.A. PASCHKE2 and K. ANGER3* Centro de Investigaciones I-MAR, Universidad de Los Lagos, Casilla 557 Puerto Montt, Chile Facultad de Pesquerías y Oceanografía, Universidad Austral de Chile, Casilla 1327, Puerto Montt, Chile Biologische Anstalt Helgoland, Stiftung Alfred-Wegener-Institut für Polarund Meeresforschung, 27498 Helgoland, Germany Tel. +49 (4725) 819348; Fax +49 (4725) 819369; email: [email protected]
منابع مشابه
Metamorphosis in a semiterrestrial crab, Sesarma curacaoense: intra- and interspecific settlement cues from adult odors
The larvae of many marine invertebrate species are able to delay their settlement and metamorphosis in the absence of characteristic cues from the adult habitat. This phenomenon was experimentally studied in the megalopa stage of Sesarma curacaoense de Man, 1892, a semiterrestrial grapsid crab that lives in the shallow coastal mangrove habitats in the Caribbean region. Duration of the developme...
متن کاملOntogeny of osmoregulation and salinity tolerance in a mangrove crab, Sesarma curacaoense (Decapoda: Grapsidae).
The grapsid crab Sesarma curacaoense is believed to represent the closest saltwater relative to the ancestor which gave rise to an adaptive radiation of endemic freshwater and terrestrial species on the island of Jamaica. Living in mangrove swamps with variable salinity conditions and showing semiterrestrial behaviour, S. curacaoense exhibits ecological adaptations to non-marine conditions. In ...
متن کاملStimulation of metamorphosis in an estuarine crab, Chasmagnathus granulata (Dana, 1851): temporal window of cue receptivity
The larvae of most benthic marine invertebrate species must develop for a minimum of time in the plankton before they become competent for settlement and metamorphosis in response to stimulating external cues. In an experimental laboratory study, we identified the temporal window of cue receptivity within the moulting cycle of the megalopa stage of an estuarine crab, Chasmagnathus granulata Dan...
متن کاملThe early life history of Sesarma fossarum, an endemic freshwater crab from Jamaica
The freshwater crab Sesarma fossarum (Decapoda, Brachyura, Sesarmidae) was only recently described as a new species. As in most other endemic Jamaican crabs that have radiated in limnic and terrestrial environments, its early life history has been largely unknown. In an experimental laboratory study this species was reared through embryonic, larval, and early juvenile development, and ontogenet...
متن کاملOntogeny of shell-related behaviors and transition to land in the terrestrial hermit crab Coenobita compressus
The marine megalopa of the terrestrial hermit crab Coenobita compressus wears a small gastropod shell that it carries onto land before metamorphosing into a juvenile crab. This paper gives the first detailed account of temporal shifts in shell-related behaviors that occur as the megalopa approaches metamorphosis. Megalopae placed in individual containers shortly after metamorphosing from the la...
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تاریخ انتشار 2005