Morphological differentiation of catfishes of the family Ariidae occurring along the west coast of India


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Authors

  • Rajan Kumar Central Institute of Fisheries Education, Mumbai
  • Ashok Kumar Jaiswar Central Institute of Fisheries Education, Mumbai
  • Sushanta Kumar Chakraborty Central Institute of Fisheries Education, Mumbai
  • Uttam Kumar Sarkar National Bureau of Fish Genetic Resources, Lucknow
  • Wazir Singh Lakra Central Institute of Fisheries Education, Mumbai

Abstract

Analysis of morphometric and meristic traits of twelve species of ariid catfishes occurring along the west coast of India indicated that these species can be differentiated based on morphological characteristics. Higher F-ratio for inter-nostril length, mouth width and adipose fin length signifies their role in species separation either alone or in combination with other morphometric characters. Stepwise discriminant function analysis (SDFA) included all considered variables showing their taxonomic significance with inter-nostril length, snout length and adipose fin length, as the most important discriminating characters. The first two discriminant functions accounted for the explanation of 89.44% of total variation. SDFA gives correct classification in 99.55% cases with only two misclassified cases among 447 specimens. Meristic features were found to be overlapping except in few instances and hence are less discriminating than morphometric variables.

Author Biographies

  • Rajan Kumar, Central Institute of Fisheries Education, Mumbai
    PhD Scholar, Fisheries Resource Harvest and Post-Harvest Management Division
  • Ashok Kumar Jaiswar, Central Institute of Fisheries Education, Mumbai
    Principal Scientist, Fisheries Resource Harvest and Post-Harvest Management Division
  • Sushanta Kumar Chakraborty, Central Institute of Fisheries Education, Mumbai
    Principal Scientist and HOD, Fisheries Resource Harvest and Post-Harvest Management Division
  • Uttam Kumar Sarkar, National Bureau of Fish Genetic Resources, Lucknow
    Principal Scientist
  • Wazir Singh Lakra, Central Institute of Fisheries Education, Mumbai
    Director and Vice-Chancellor

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Submitted

2014-10-30

Published

2015-12-30

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How to Cite

Kumar, R., Jaiswar, A. K., Chakraborty, S. K., Sarkar, U. K., & Lakra, W. S. (2015). Morphological differentiation of catfishes of the family Ariidae occurring along the west coast of India. Indian Journal of Fisheries, 62(4). https://epubs.icar.org.in/index.php/IJF/article/view/44446