Ichthyological Research

, Volume 60, Issue 3, pp 268–271

Preservation effects in geometric morphometric approaches: freezing and alcohol in a freshwater fish

Authors

    • Laboratório de Ictiologia Sistemática e Evolutiva, Departamento de Botânica Ecologia e ZoologiaUniversidade Federal do Rio Grande do Norte
  • Uedson P. Jacobina
    • Departamento de Genética e Biologia CelularUniversidade Federal do Rio Grande do Norte
  • Pablo A. Martinez
    • Departamento de Genética e Biologia CelularUniversidade Federal do Rio Grande do Norte
Short Report

DOI: 10.1007/s10228-013-0339-x

Cite this article as:
Berbel-Filho, W.M., Jacobina, U.P. & Martinez, P.A. Ichthyol Res (2013) 60: 268. doi:10.1007/s10228-013-0339-x

Abstract

The present study analyzes the effects of freezing and alcohol preservation in geometric morphometric data, using 15 individuals of the peacock fish Cichla kelberi (12.9–26.4 cm SL) divided into freezing and alcohol groups, conserved in each preservation method for 90 days. Discriminant analysis revealed significant difference between before and after treatments, and principal component analysis also showed separation between treatments, for both conservation methods. These results introduce a significant preservation influence that should be considered in biological, ecological and evolutionary interpretations of fish data in geometric morphometric approaches.

Keywords

Discriminant analysisPrincipal component analysisFishes

Copyright information

© The Ichthyological Society of Japan 2013