Journal of Marine Biology & Oceanography ISSN: 2324-8661

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Research Article, J Mar Biol Oceanogr Vol: 3 Issue: 4

Reproductive Cycle of the Edible Sea Urchin Paracentrotus lividus (Lamarck, 1816) (Echinodermata: Echinoidea) in the Coastal Region El Jadida-Safi (Atlantic Ocean, Morocco)

Vijai Lakshmi1*, Prashant Khare2, Pragya Misra2, Srivastava MN3 and Anuradha Dube2
1Divisions of Medicinal & Process Chemistry, CSIR- Central Drug Research Institute, Lucknow, India
2Division of Parasitology, CSIR- Central Drug Research Institute, Lucknow, India
3Division of Botany, CSIR- Central Drug Research Institute, Lucknow, India
Corresponding author : Siham El Jouhari
Laboratory of environment and aquatic ecology, Department of Biology, Faculty of Sciences, Ain Chock, Km 8 Route d’El Jadida B.P 5366 Maarif Casablanca 20100, Morocco
E-mail: [email protected]
Received: May 16, 2014 Accepted: September 01, 2014 Published: September 08, 2014
Citation: Jouhari SE, Rharbi N, Halla MI, Belhsen OK (2014) Reproductive Cycle of the Edible Sea Urchin Paracentrotus lividus (Lamarck, 1816) (Echinodermata: Echinoidea) in the Coastal Region El Jadida-Safi (Atlantic Ocean, Morocco). J Mar Biol Oceanogr 3:4. doi:10.4172/2324-8661.1000136

Abstract

 Reproductive Cycle of the Edible Sea Urchin Paracentrotus lividus (Lamarck, 1816) (Echinodermata: Echinoidea) in the Coastal Region El Jadida-Safi (Atlantic Ocean, Morocco)

The Sea urchins populations of P. lividus had an annual reproductive cycle that was synchronous across sites and between males and females. The histology of the gonads revealed six different stages: Recovering, Growing, Premature, Mature, Partly spawned and Spent. Maturation occurred between March and late April while spawning period occurred in May and early August with little difference between sites. The Gonad indices showed a peak from late winter to early spring. A perfect correlation observed between the gonad index and the histological results suggests that the gonad index decreases when the individual is spawning. Nevertheless, the GI seems to be influenced by abiotic factors particularly sea water temperature in the first station (Sidi Bouzid) and the food richness of the environment in the second station (Ain Darak).

Keywords: Paracentrotus lividus; Sex ratio; Reproductive cycle; Gonad index; Moroccan Atlantic Coasta

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