National Aquatic Resources Research & Development Agency (NARA)

Size at Onset of Sexual Maturity and Onset of Spawning in Female panulirus homarus (Crustacea: Decapoda: Palinuridae) in Sri Lanka

By: Series: Marine Ecology Progress Series. ; Vol.57 Publication details: 1989, Germany, Inter Research,Description: 83-87p
Contents:
The average length at which female spiny lobsters Panulirus homarus attain sexual maturity was determined in Sri Lanka from 1986 to 1988 by observing changes in length of the tail, which later provides the substratum for attachment of fertilized eggs. Results were confirmed by observing the presence of spermatophores on the females' sternum. The size at onset of oviposition (spawning) was estimated by considering the '50 % ovigerous' level. Results indicate that female P. homarus attain sexual (gonad) maturity after a rostral carapace length (RCL) of between 38 and 47 mm is reached. The size at onset of oviposition (spawning) was estimated as 59.5 mm RCL.
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Research Papers Research Papers NARA Main Library Ready Reference RP0146 Available RP0146

The average length at which female spiny lobsters Panulirus homarus attain sexual maturity was determined in Sri Lanka from 1986 to 1988 by observing changes in length of the tail, which later provides the substratum for attachment of fertilized eggs. Results were confirmed by observing the presence of spermatophores on the females' sternum. The size at onset of oviposition (spawning) was estimated by considering the '50 % ovigerous' level. Results indicate that female P. homarus attain sexual (gonad) maturity after a rostral carapace length (RCL) of between 38 and 47 mm is reached. The size at onset of oviposition (spawning) was estimated as 59.5 mm RCL.

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