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Reproduction in the deep-sea penaeoid shrimp Aristeus alcocki Ramadan, 1938 (Decapoda: Penaeoidea: Aristeidae) from southwestern India

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Relation http://eprints.cmfri.org.in/11943/
 
Title Reproduction in the deep-sea penaeoid shrimp Aristeus
alcocki Ramadan, 1938 (Decapoda: Penaeoidea:
Aristeidae) from southwestern India
 
Creator Paramasivam, P
Chakraborty, Rekha D
Maheswarudu, G
Kuberan, G
Baby, P K
Sreesanth, L
Ragesh, N
 
Subject Crustacean Fisheries
 
Description The Arabian red shrimp, Aristeus alcocki Ramadan, 1938, is one of the targets of commercial
trawlers operating since 2000 along the Indian coasts at depths of 200–850 m. We report
for the first time on the reproductive biology, insemination frequency, ovarian maturation,
gonadosomatic index (GSI), size at maturity, and fecundity of A. alcocki investigated macroscopically
and validated histologically using monthly trawl samples from the southwestern
coast of India. Females have an open thelycum with five gonad developmental stages (I to V)
and two stages (I and II) in males. A total of 4,170 specimens were examined and 68.6% of
the females had been inseminated (carapace length (CL) 22.0–53.0 mm), predominantly during
January to May. Females in stage I (immature) measured on average CL 25.5 ± 0.87 mm,
those in stages IV and V (mature) CL 41.5 ± 0.62 mm. Immature males were smaller, mean
CL 20.5 ± 0.5 mm. Size at first sexual maturity for females was estimated as CL 35.07 mm
(total length (TL) 120–170 mm) and the inseminated specimens (CL50is) were mature at CL
31.45 mm using a non-linear method. The smallest mature female was CL 35 mm, whereas
the size at maturity (CL50ms) of males was estimated as CL 19.6 mm (TL 75–96 mm). We also
report synchronous oocyte development and continuous spawning activity with a peak during
January to April. Information on the reproduction of this deep-water shrimp will help fishery
managers estimate the stock sustainability and develop resource management measures.
 
Date 2018
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/11943/1/Rekha%20Devi%20Chakraborty_2018_Journal%20of%20Crustacean%20Biology_Reproduction%20in%20the%20deep-sea%20penaeoid%20shrimp%20Aristeus%20alcocki.pdf
Paramasivam, P and Chakraborty, Rekha D and Maheswarudu, G and Kuberan, G and Baby, P K and Sreesanth, L and Ragesh, N (2018) Reproduction in the deep-sea penaeoid shrimp Aristeus alcocki Ramadan, 1938 (Decapoda: Penaeoidea: Aristeidae) from southwestern India. Journal of Crustacean Biology. pp. 1-13.