Touch‑sensitive bristles on the carapace of the mud crab Scylla paramamosain may be receptors for courtship signals

Gunzo Kawamura and Teodora Uy Bagarinao and Chi Keong Loke and Hsein‑Loong Au and Annita Seok Kian Yong and Leong‑Seng Lim (2020) Touch‑sensitive bristles on the carapace of the mud crab Scylla paramamosain may be receptors for courtship signals. Fisheries Science, 87. pp. 65-70. ISSN 1444-2906

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Abstract

Bristle patches on the carapace behind the eyes were found for the frst time in both males and females of the four species of mud crab Scylla spp. Electrocardiography revealed that the bristle patches of Scylla paramamosain were sensitive to touch (with a glass capillary) but not to chemical stimulation (with sugarcane juice). To elucidate the function of these touch signals, the courtship behaviour of S. paramamosain was video-recorded in a broodstock tank. A male approached a female, extended a walking leg over her carapace, touched her bristle patches with a dactyl, mounted her, and probed the bristle patches further with the third maxillipeds. Touch stimulus may be a signal for courtship in Scylla and one of the chain stimuli for the completion of mating behaviour.

Item Type:	Article
Keyword:	Electrocardiography , Video observation , Courtship signal , Mating
Subjects:	Q Science > QL Zoology S Agriculture > S Agriculture (General)
Department:	INSTITUTE > Borneo Marine Research Institute
Depositing User:	DG MASNIAH AHMAD -
Date Deposited:	27 Apr 2021 14:20
Last Modified:	27 Apr 2021 14:20
URI:	https://eprints.ums.edu.my/id/eprint/26812

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