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Saddleback Syndrome in Wild Black Pomfret Parastromateus niger (Bloch, 1795), From Southeast Coast of India
Thalassas: An International Journal of Marine Sciences ( IF 0.7 ) Pub Date : 2021-01-20 , DOI: 10.1007/s41208-021-00287-3
K. Silambarasan , K. Govindaraj , A. B. Kar , G. V. A. Prasad , S. K. Pattnayak , L. Ramalingam

Abnormalities in the marine fishes are encountered around the world. The saddleback syndrome a deformity in the dorsal fin of the fish. They could be due to various environmental changes, predation and also could be due to anthropogenic activities like marine pollution induced due to heavy metal pollution etc. A multi species and multi gears fishery exists in India. Visakhapatnam fishing harbor is a major fish landing center in the south east coast of India. Different types of marine fishes are commonly landed here. On continuous observation of the marine fish landings of Visakhapatnam, the above syndrome was recorded in black pomfret (Parastromateus niger). The dorsal fin of the observed specimen of P. niger was having severe deformity in the form of shortening of the neural spines and complete loss of pterygiophores associated with four dorsal spines. The seven soft rays were observed to be missing in the above specimen. The X-ray radiography conformed the deformity in the above specimen. The deformity appears to be there from the early developmental stage. The deformed specimen was compared with a normal specimen. The possible factors and various causative agents of the saddleback syndrome for the observed specimen are discussed in this paper.



中文翻译:

来自印度东南沿海野生黑Po Paraparaateus niger(Bloch,1795)的鞍背综合症

世界各地都遇到海水鱼类的异常情况。鞍背综合症是鱼背鳍畸形。它们可能是由于各种环境变化,掠夺,也可能是由于人为活动,例如由于重金属污染等引起的海洋污染。印度存在多种物种和多种渔具。维沙卡帕特南渔港是印度东南沿海的主要鱼类登陆中心。通常在这里登陆不同类型的海水鱼。在连续观察维沙卡帕特南的海鱼降落时,在黑fParastromateus niger)中记录了上述综合症。观察到的尼日尔疟原虫标本的背鳍患有严重的畸形,表现为神经棘缩短和伴有四个背棘的翼状phor肉完全丧失。观察到上述标本中缺少7条柔光。X射线摄影符合上述标本的畸形。畸形似乎从发育初期就存在。将变形的样本与正常样本进行比较。本文讨论了观察到的标本的鞍背综合症的可能因素和各种病因。

更新日期:2021-01-20
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