e-journal

Mating behaviour of the orange mud crab, Scylla olivacea: The effect ofsex ratio and stocking density on mating success

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Mud crabs from the genus Scylla have high commercial value and are considered as one of the highlysought luxury seafood items. Thorough understanding about their biology and mating behaviour is vitalin providing important information for a sustainable exploitation and future incorporation into the aqua-culture industry. The mating process of S. olivacea lasted 82.0 ± 10.8 h was divided into four phases:precopulation, molting, copulation, and postcopulation. Courtship displays and fighting were shown bymature males while they were courting females. Precopulatory position lasted for 55.2 ± 10.8 h before thepairs disengaged for the female to molt. The molting process was 4.6 ± 0.3 h. Copulation (mean durationwas 6.6 ± 0.5 h) occurred while the female’s exoskeleton was still soft. Postcopulatory guarding lastedfor 13.6 ± 0.6 h. Separation of the mating pairs indicates the end of postcopulation phase. Mating successpercentage was unaffected by sex ratio, but inversely affected by stocking density. Cumulative mortalityincreased with increasing stocking density and unequal sex ratios. Postcopulatory guarding duration wassignificantly shorter in treatment with 1 male:2 females ratio and treatment with the lowest stockingdensity (2 crabs m−2). We proposed rearing of mud crab broodstocks for mating purpose using sex ratioof 1 male:2 females and stocking density of 6 crabs m−2to maximize output (successful mating pairs)while maintaining low mortality percentage and shorter postcopulatory guarding duration.

Keywords:Orange mud crabMating behaviourSex ratioStocking densityScyllaa

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Informasi Detail

Judul Seri

Aquaculture Reports

No. Panggil

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Penerbit

: Elsevier., 2015

Deskripsi Fisik

Aquaculture Reports 2 (2015) 50–57

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

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