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

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Date
2020-11-17
Author
Kawamura, Gunzo
Bagarinao, Teodora ORCID
Loke, Chi Keong
Au, Hsein-Loong
Yong, Annita Seok Kian
Lim, Leong-Seng
Page views
5,406
Subject
sexual behaviour ASFA
receptors ASFA
carapace ASFA
marine crustaceans ASFA
copulation ASFA
moulting ASFA
Scylla paramamosain AGROVOC
electrocardiography AGROVOC
Video observation
Courtship signal
crabs AGROVOC
bristles AGROVOC
copulation AGROVOC
Scylla tranquebarica AGROVOC
Scylla olivacea AGROVOC
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Abstract
Bristle patches on the carapace behind the eyes were found for the first 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.
URI
http://hdl.handle.net/10862/6015
Suggested Citation
Kawamura, G., Bagarinao, T., Loke, C. K., Au, .-L., Yong, A. S. K., & Lim, .-S. (2020). Touch-sensitive bristles on the carapace of the mud crab Scylla paramamosain may be receptors for courtship signals. Fisheries Science, 87(1), 65-70. https://doi.org/10.1007/s12562-020-01478-2 
DOI
10.1007/s12562-020-01478-2
Type
Article
ISSN
0919-9268; 1444-2906
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  • Journal Articles [1163]

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