<b>Determination of age and its correlation with biometric variables and seasonal reproductive indices of <i>Leporinus obtusidens

  • Viviane de Oliveira Felizardo Universidade Federal de Lavras
  • Eliane Aparecida de Andrade Universidade Federal de Lavras
  • Carlos Cicinato Vieira Melo Universidade Federal de Lavras
  • Luis David Solis Murgas Unuversidade Federal de Lavras
  • Rilke Tadeu Fonseca de Freitas Universidade Federal de Lavras
  • Estefânia de Souza Andrade Universidade Federal de Lavras

Resumo

This study determined the age and its correlation with biometric variables and reproductive indices of piapara Leporinus obtusidens caught at the Funil Reservoir. We caught 133 specimens between September 2006 and August 2007. Weight, total length, standard length, depth, height, head length and radius of the scales were measured. The sex was determined by macroscopic examination of gonads. The age of each fish was determined by analyzing the growth rings on the scales. Seasonal differences in biometric variables were tested using the NK test at 5%. The correlation of age and radius of the scales with the biometric variables and reproductive indices were analyzed using the SAEG software. Fish individuals ranging from 3 to 14 years of age were caught. In the spring and summer, smaller fish were captured compared to those caught during the fall and winter. Females tended to have higher weight and morphometric values when compared to males. Age and radius of the scales were correlated with biometric variables in L. obtusidens. It can be concluded that the biometric variables of this species can be used as an indicator of age.

 

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Biografia do Autor

Viviane de Oliveira Felizardo, Universidade Federal de Lavras
Possui graduação em Engenharia Agronômica (2009), Mestrado em Ciências Veterinária/Genética de Animais Aquáticos (2012) pela Universidade Federal de Lavras (UFLA). Atualmente faz doutorado em Zootecnia/Produção Animal na Universidade Federal de Lavras com orientação do Prof. Dr. Rilke Tadeu de Freitas. Atua nas linhas de pesquisa de Aquicultura, com ênfase em Melhoramento Genético e Experimentação Animal.
Publicado
2015-07-01
Como Citar
Felizardo, V. de O., Andrade, E. A. de, Melo, C. C. V., Murgas, L. D. S., Freitas, R. T. F. de, & Andrade, E. de S. (2015). <b>Determination of age and its correlation with biometric variables and seasonal reproductive indices of <i&gt;Leporinus obtusidens. Acta Scientiarum. Biological Sciences, 37(3), 265-271. https://doi.org/10.4025/actascibiolsci.v37i3.28003
Seção
Aquicultura e Recursos Pesqueiros

 

0.6
2019CiteScore
 
 
31st percentile
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0.6
2019CiteScore
 
 
31st percentile
Powered by  Scopus