alexa Effect of Cadmium on the Embryonic Development and Hatching Rhythm of Big Fin Squid Sepioteuthis lessoniana, Lesson (1830) from Palk Strait, East Coast of India
ISSN: 2332-2543

Journal of Biodiversity & Endangered Species
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Research Article

Effect of Cadmium on the Embryonic Development and Hatching Rhythm of Big Fin Squid Sepioteuthis lessoniana, Lesson (1830) from Palk Strait, East Coast of India

Vasanthi LA1*, Revathi P1, Munuswamy N2 and Ramaswamy Babu R1

1Department of Environmental Biotechnology, Bharathidasan University, Trichy-620024, Tamilnadu, India

2Department of Zoology, University of Madras, Guindy campus, Chennai-620025, Tamilnadu, India

*Corresponding Author:
Vasanthi LA
Department of Environmental Biotechnology
Bharathidasan University
Trichy-620024
Tel: +914312407088
Fax: +914312407045
E-mail: [email protected]

Received date: December 18, 2015; Accepted date: May 07, 2016; Published date: May 17, 2016

Citation: Vasanthi LA, Revathi P, Munuswamy N, Babu RR (2016) Effect of Cadmium on the Embryonic Development and Hatching Rhythm of Big Fin Squid Sepioteuthis lessoniana, Lesson (1830) from Palk Strait, East Coast of India. J Biodivers Endanger Species 4:159. doi: 10.4172/2332-2543.1000159

Copyright: © 2016 Vasanthi LA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

In the present study, the impact of cadmium on embryonic development, morphology of eggs and newly hatched larvae of the Sepioteuthis lessoniana were described using the laboratory-reared specimens originating from Thondi, South East coast of India. The eggs were exposed to a concentration of 25 μg Cd/L for up to hatching. The average incubation period of the eggs varied between 18-23 days and the estimated mean temperatures were 18.6 ± 0.7°C for control, and 19.2 ± 1.1°C for Cd exposed groups. The results revealed that a total hatching rate of 99.2 ± 1.6% was achieved in control group and only 65.2 ± 8.8% in treated group. The deformities of the paralarvae were illustrated with light and scanning electron microscopy. In conclusion, the present concentration exhibited toxic effects to the eggs and paralarvae of S. lessoniana. Therefore, Cd level as high as we used in this study could give good information on dangerous Cd levels on squid.

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