Occurrence of chromatophoroma or chromatophoromatosis in Sardinella longiceps (Valenciennes, 1847) from Tamilnadu, southeast coast of India. (7th April 2016)

• Record Type: Journal Article
• Authors: Singaravel, V.; Gopalakrishnan, A.; Vijayakumar, R.; Raja, K.; Asrafuzzaman, S.
• Is Part Of: Journal of applied ichthyology. Volume 32:Number 4(2016:Aug.)
• Page Start: 712
• Page End: 717
• Publication Date: 2016-04-07
• Subjects: Fishes -- Periodicals; Fish culture -- Periodicals; Fisheries -- Periodicals; Ichthyology -- Periodicals; 597
• DOI: 10.1111/jai.13084
• Languages: English
• ISSNs: 0175-8659

Abstract

Summary: The study was undertaken to analyse the prevalence of skin tumours in Sardinella longiceps, and to investigate the tumour type occurrence, distribution and histology. Fish samples were collected from three different landing centres (Cuddalore, Parangipettai and Nagapattinam) of Tamilnadu, southeast coast of India, from January 2014 to December 2014. A total of 192 661 individuals were examined, 750 of which had tumours for an overall prevalence of 0.39%. By station, higher prevalence was observed in Parangipettai (0.41%) followed by Cuddalore (0.39%) and Nagapattinam (0.36%). Chromatophoromas were predominant among the types of tumours in sardines. The multi‐coloured cutaneous tumour masses were in the head and body skin. Among the chromatphoromas, the erythrophoromas were most abundant followed by melanophoromas, iridophoromas and leucophoromas. Histologically, the tumour lesions were characterized by hyperplastic pigment cells intermingled with fibroblasts. The gross‐morphological and histopathological diagnoses of these lesions were compatible with erythrophoroma, melanophoroma, iridophoroma and leucophoroma.