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

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.

[img] Text
Rekha Devi Chakraborty_2018_Journal of Crustacean Biology_Reproduction in the deep-sea penaeoid shrimp Aristeus alcocki.pdf
Restricted to Registered users only

Download (2MB) | Request a copy | Please mail the copy request to cmfrilibrary@gmail.com
Related URLs:

    Abstract

    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.

    Item Type: Article
    Uncontrolled Keywords: Arabian red shrimp, gonadosomatic index, insemination, maturity, oocytes
    Subjects: Crustacean Fisheries
    Divisions: CMFRI-Kochi > Marine Capture > Crustacean Fisheries
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Crustacean Fisheries
    CMFRI-Kochi > Marine Capture > Crustacean Fisheries
    Subject Area > CMFRI-Kochi > Marine Capture > Crustacean Fisheries
    Depositing User: Arun Surendran
    Date Deposited: 22 Jun 2017 10:04
    Last Modified: 29 May 2018 05:19
    URI: http://eprints.cmfri.org.in/id/eprint/11943

    Actions (login required)

    View Item View Item