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Observations on the moulting behaviour of the spiny lobster Panulirus homarus (Linnaeus)

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Relation http://eprints.cmfri.org.in/181/
 
Title Observations on the moulting behaviour of the
spiny lobster Panulirus homarus (Linnaeus)
 
Creator Radhakrishnan, E V
Vijayakumaran, M
 
Subject Lobsters
 
Description The moulting process of the spiny lobster Panulirus homarus in the laboratory
was observed and described. In this speceis, a lobster approaching ecdysis can
be identified, almost 48 hours before, by the presence of a longitudinal
decalcified resorptive line along the branchiostegites. Under normal
conditions, the lobster completes ecdysis within 8-10 hours after the initiation
of the moulting process. The active phase of ecdysis is completed within 3-
4 minutes. Initially, the lobster withdraws the thorax gradually from the old
exoskeleton and finally sheds the abdominal part of it by strong flapping of
the tail. The lobster moulting on a rough substratum completes ecdysis in
the upright position, whereas those moulting on a soft substratum rolls on to
one side while withdrawing the walking legs. The newly moulted lobster
regains mobility within a few seconds and avoids contact with other lobsters
until the new exoskeleton is sufficiently hardened.
 
Publisher CMFRI/ICAR
 
Date 1998
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/181/1/Article_15.pdf
Radhakrishnan, E V and Vijayakumaran, M (1998) Observations on the moulting behaviour of the spiny lobster Panulirus homarus (Linnaeus). Indian Journal of Fisheries, 45 (3). pp. 331-338.