Indian Journal of Geo-Marine Sciences

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Report of blended vertebral deformity in the caudal region of narrow-barred Spanish mackerel, Scomberomorus commerson (Lacepede, 1800), from India: A case study


Affiliations
1 Aquatic Animal health management Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai – 400 061, India
2 Fish Genetics and Biotechnology Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai – 400 061, India
3 Fisheries Resources, Harvest & Post-Harvest Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai – 400 061, India
4 Fisheries Resources, Harvest & Post-Harvest Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai – 400 061, India / The Neotia University, Sarisha, Diamond Harbour, 24 Parganas (S), West Bengal – 743 368, India
5 KVK, Acharya N G Ranga Agricultural University, Srikakulam, Andhra pradesh – 532 185, India
6 KVK, Dr YSR Horticulural University, Venkataramannagudem, Andhra pradesh – 534 101, India
7 College of Fisheries, Muthukur, Andhra Pradesh – 524 344, India

Among the four available seerfishes (Scomberomorus commerson, S. guttatus, S. lineolatus, and Acanthocybium solandri) along the Indian coast, S. commerson (27,334 tonnes) is a significant contributor to the seerfish landings. The trawlers from the Versova fish landing centre carried out fishing operations between 20°21′21.29ʺ N, 19°55′03.01ʺ N latitude and 72°36′24.32ʺ E, 72°36′12.23ʺ E longitude in the depth ranges from 5 to 50 m. An abnormal specimen of seerfish was collected from the trawler landed at Versova fish landing centre from the Mumbai, Arabian Sea. The collected specimen was compared with the typical 46 specimens, which showed similar morphological characteristics except for the vertebral deformity near the caudal region (Lumber portion). The deformed fish was radiographed, which showed a distal malformation at about 40th to 49th amphicoelomic vertebral bone. The current work reports blended vertebral column deformity, particularly in the caudal region (a combination of Scoliosis-Lordosis-Kyphosis or LSK syndrome) in a large Narrow-barred Spanish mackerel (S. commerson) specimen from India. In the present study, the exact cause for such a deformation could not be established; however, the possible reasons behind the vertebral deformity are discussed.

Keywords

Arabian Sea, Caudal vertebrae, Deformity, Lordosis, Scoliosis, Seerfish
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  • Report of blended vertebral deformity in the caudal region of narrow-barred Spanish mackerel, Scomberomorus commerson (Lacepede, 1800), from India: A case study

Abstract Views: 68  | 

Authors

B Madhusudhana Rao
Aquatic Animal health management Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai – 400 061, India
N Pinto
Fish Genetics and Biotechnology Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai – 400 061, India
C Sudhan
Fisheries Resources, Harvest & Post-Harvest Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai – 400 061, India
S Chennuri
Fisheries Resources, Harvest & Post-Harvest Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai – 400 061, India
V Pathak
Fisheries Resources, Harvest & Post-Harvest Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai – 400 061, India / The Neotia University, Sarisha, Diamond Harbour, 24 Parganas (S), West Bengal – 743 368, India
C Balakrishna
KVK, Acharya N G Ranga Agricultural University, Srikakulam, Andhra pradesh – 532 185, India
A D P Reddy
KVK, Dr YSR Horticulural University, Venkataramannagudem, Andhra pradesh – 534 101, India
O Sudhakar
College of Fisheries, Muthukur, Andhra Pradesh – 524 344, India

Abstract


Among the four available seerfishes (Scomberomorus commerson, S. guttatus, S. lineolatus, and Acanthocybium solandri) along the Indian coast, S. commerson (27,334 tonnes) is a significant contributor to the seerfish landings. The trawlers from the Versova fish landing centre carried out fishing operations between 20°21′21.29ʺ N, 19°55′03.01ʺ N latitude and 72°36′24.32ʺ E, 72°36′12.23ʺ E longitude in the depth ranges from 5 to 50 m. An abnormal specimen of seerfish was collected from the trawler landed at Versova fish landing centre from the Mumbai, Arabian Sea. The collected specimen was compared with the typical 46 specimens, which showed similar morphological characteristics except for the vertebral deformity near the caudal region (Lumber portion). The deformed fish was radiographed, which showed a distal malformation at about 40th to 49th amphicoelomic vertebral bone. The current work reports blended vertebral column deformity, particularly in the caudal region (a combination of Scoliosis-Lordosis-Kyphosis or LSK syndrome) in a large Narrow-barred Spanish mackerel (S. commerson) specimen from India. In the present study, the exact cause for such a deformation could not be established; however, the possible reasons behind the vertebral deformity are discussed.

Keywords


Arabian Sea, Caudal vertebrae, Deformity, Lordosis, Scoliosis, Seerfish