Adaptations to semi-terrestrial life in embryos of East African mangrove crabs: a comparative approach


Contact
Hans.Poertner [ at ] awi.de

Abstract

In this experimental study, we compared the embryonic respiration rate in air and water of six East African sesarmid species with intertidal, supratidal and arboreal habits, to highlight possible adaptations in embryonic metabolism to their different lifestyles. The embryos of all analysed crabs showed bimodal respiration, but we did not find a trend towards an enhanced embryonic oxygen uptake in air from the intertidal to the arboreal and supratidal species. However, the late-stage embryos of the most land-adapted species, Chiromantes spp., showed an enhanced metabolism when immersed in sea water that we interpreted as an adaptive recovery mechanism to cope with the storage of by-products due to marine-based metabolic pathways during long emersion periods. Thus, we showed that the embryos of land-adapted species, although still strongly water dependent, are well adapted to semi-terrestrial habitats and represent a minor limiting factor for females, which are not restricted in their emersion period by the oxygen requirements of their embryos.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
ISI/Scopus peer-reviewed
Publication Status
Published
Eprint ID
35017
DOI 10.1007/s00227-013-2243-3

Cite as
Simoni, R. , Giomi, F. , Spigoli, D. , Pörtner, H. O. and Cannicci, S. (2013): Adaptations to semi-terrestrial life in embryos of East African mangrove crabs: a comparative approach , Marine Biology, 160 (9), pp. 2483-2492 . doi: 10.1007/s00227-013-2243-3


Share


Citation

Research Platforms
N/A


Actions
Edit Item Edit Item