Rates of water loss in four crabs from different habitats

Maria do Carmo Fernandes Santos, Sylvia O. Suadicani, Claudia B.R. Martinez, Eliana S. Lobo

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


1. 1. The water loss was determined for both sexes in crabs from mangrove Ucides cordaius and Goniopsis cruentata, supralittoral Ocypode quadrata and intertidal Pachygrapsus transversus under aerial desiccation conditions (19.63 ± 2.77% r.h. and 25.50 ± 0.34°C) for several hours. 2. 2. The water loss rate increased linearly with exposure time. The smaller P. transversus have the faster rate, 3.50 ± 0.20 and 3.03 ± 0.25 g/100g/hr, followed by U. quadrata, 1.03 ± 0.07 and 0.65 ± 0.07 g/100 g/hr, G. cruentata, 0.53 ± 0.02 and 0.50 ± 0.04 g/100 g/hr, V. cordatus, 0.43 ± 0.03 and 0.29 ± 0.02 g/100g/hr, females and males, respectively. 3. 3. The surface-volume ratio appears to be the most important factor related to the water loss. The terrestrialness of the four species could be indirectly inferred from their water loss rates.

Original languageEnglish (US)
Pages (from-to)309-312
Number of pages4
JournalComparative Biochemistry and Physiology -- Part A: Physiology
Issue number2
StatePublished - 1986
Externally publishedYes

ASJC Scopus subject areas

  • Physiology


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