Arquivo Brasileiro de Medicina Veterinária e Zootecnia (Feb 2014)

Allometric growth patterns in hatchery-reared larvae of the catfish Lophiosilurus alexandri (Pisces: Pseudopimelodidae)

  • R.J. Guimarães-Cruz,
  • V.C. Veloso-Júnior,
  • N.G. Sales,
  • D.A.A. Oliveira,
  • J.E. Santos

DOI
https://doi.org/10.1590/S0102-09352014000100038
Journal volume & issue
Vol. 66, no. 1
pp. 284 – 288

Abstract

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The aim of the present study was to characterize the relationships that occur between morphometric variables of larvae of Lophiosilurus alexandri Steindachner, 1876 through their allometric growth analysis. Total length, head length and body height were correlated with standard length, head height and body height, as well as eye diameter and head height with head length. The results revealed allometric positive relation during the initial development, where the b coefficient varied between 1.10 and 2.81. The variable pre-anal distance in relation to the standard length and the snout length in relation to the head length revealed an allometric negative relation, where the b coefficient was 0.85 and 0.94, respectively.

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