Open Access
Open access
Elsevier
Aquaculture Reports
,  volume 19 ,  pages 100587

First report of intersex in Cobia, Rachycentron canadum reared in Gulf of Mannar, India—A case study

P Ramesh Kumar 1
, 
M. Sakthivel 1
, 
G. Tamilmani 1
, 
Rangasamy Jayakumar 1
, 
A K Abdul Nazar 2
, 
M. Sankar 1
, 
Anikuttan K K 1
, 
Angela Mercy A 1
, 
Krishnaveni N 1
, 
Ravikumar T T 1
1
 
2
 
Publication type: Journal Article
Publication date: 2021-03-01
Elsevier
scimago Q1
wos Q1
SJR: 0.866
CiteScore: 5.9
Impact factor: 3.7
ISSN: 23525134
Animal Science and Zoology
Aquatic Science
Abstract
The present study reports the first incidence of intersex in Cobia, Rachycentron canadum maintained at sea cages in the Gulf of Mannar, India. During the 10  year study period (2010–2019), at total of 815 broodstock (386 wild captured and 429 captive raised) were maintained under captivity in sea cages in the Gulf of Mannar, India for the purpose of seed production. Of which, 318 male and 252 female broods’ gonads were examined post-mortem following a natural death. Only one male fish was found with a visible gonadal anomaly. Microscopic analysis of gonad revealed the presence of both the characteristic female and male tissues in testes of a single specimen (testis-ova). Only the abnormal nodular portion contained primary oocytes, whereas the central testicular tissue contained spermatocytes and spermatids in the seminiferous lobules. This is the first reported intersex of cobia from the Gulf of Mannar, India. It could be interpreted as low-level rare incidence of natural aberration.
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Ramesh Kumar P. et al. First report of intersex in Cobia, Rachycentron canadum reared in Gulf of Mannar, India—A case study // Aquaculture Reports. 2021. Vol. 19. p. 100587.
GOST all authors (up to 50) Copy
Ramesh Kumar P., Sakthivel M., Tamilmani G., Jayakumar R., Abdul Nazar A. K., Sankar M., K K A., A A. M., N K., T T R. First report of intersex in Cobia, Rachycentron canadum reared in Gulf of Mannar, India—A case study // Aquaculture Reports. 2021. Vol. 19. p. 100587.
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RIS Copy
TY - JOUR
DO - 10.1016/j.aqrep.2021.100587
UR - https://doi.org/10.1016/j.aqrep.2021.100587
TI - First report of intersex in Cobia, Rachycentron canadum reared in Gulf of Mannar, India—A case study
T2 - Aquaculture Reports
AU - Ramesh Kumar, P
AU - Sakthivel, M.
AU - Tamilmani, G.
AU - Jayakumar, Rangasamy
AU - Abdul Nazar, A K
AU - Sankar, M.
AU - K K, Anikuttan
AU - A, Angela Mercy
AU - N, Krishnaveni
AU - T T, Ravikumar
PY - 2021
DA - 2021/03/01
PB - Elsevier
SP - 100587
VL - 19
SN - 2352-5134
ER -
BibTex
Cite this
BibTex (up to 50 authors) Copy
@article{2021_Ramesh Kumar,
author = {P Ramesh Kumar and M. Sakthivel and G. Tamilmani and Rangasamy Jayakumar and A K Abdul Nazar and M. Sankar and Anikuttan K K and Angela Mercy A and Krishnaveni N and Ravikumar T T},
title = {First report of intersex in Cobia, Rachycentron canadum reared in Gulf of Mannar, India—A case study},
journal = {Aquaculture Reports},
year = {2021},
volume = {19},
publisher = {Elsevier},
month = {mar},
url = {https://doi.org/10.1016/j.aqrep.2021.100587},
pages = {100587},
doi = {10.1016/j.aqrep.2021.100587}
}