A NOTE ON BEHAVIOURAL AND MORPHOLOGICAL COMPENSATIONS OF MALE UCA VOCANS (LINNAEUS, 1758) RELATIVE TO FEMALES, FOR THE LOSS OF ONE FUNCTIONAL FEEDING CLAW

Tina Fahmida Wazed; Jaroensutasinee Mullica<sup>*</sup>; Jaroensutasinee Krisanadej

doi:10.1163/15685403-00003563

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A NOTE ON BEHAVIOURAL AND MORPHOLOGICAL COMPENSATIONS OF MALE UCA VOCANS (LINNAEUS, 1758) RELATIVE TO FEMALES, FOR THE LOSS OF ONE FUNCTIONAL FEEDING CLAW

作者：Tina Fahmida Wazed; Jaroensutasinee Mullica^*; Jaroensutasinee Krisanadej

来源：Crustaceana, 2016, 89(8): 975-981.

DOI：10.1163/15685403-00003563

摘要

We investigated whether male Uca vocans (Linnaeus, 1758) have behaviourally or morphologically compensated for having only one feeding claw while females have two. We predicted that (1) females will have a higher feeding rate/crab per min, (2) males will have a higher feeding rate/claw per min, (3) males will have larger feeding claws (dactyl length and width) than comparable-sized females, and (4) smaller crabs will feed faster than larger ones and thereby satisfy their feeding demand more rapidly than larger crabs. Our results supported all four predictions. Males compensated for having one feeding claw by feeding faster/claw per min with larger claws.