Occurrence of abnormal starfish Astropecten indicus (Doderlein, 1888) (Echinodermata: Astroidea) along Southeast coast of India

PRABHU kOLANDHASAMY, Bragadeeswaran Subramanian

Resumo


Starfish Astropecten indicus was collected from bycatch landings at Mudasalodai fishing harbour, Tamil Nadu (India) in November 2011. Totally 134 specimens collected among three specimens (2,2%) have abnormally developed four and six arms. Normally, A. indicus has five arms and the deviation from pentamerism is a rare phenomenon in starfishes. The present observations suggest that deviations from pentamerism are not a heritable character but are a consequence of environmental perturbations on the metamorphosis of larvae and/or abnormal regeneration of arms.




Palavras-chave


Abnormal regeneration; Pentamerism; Starfish

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DOI: https://doi.org/10.5007/2175-7925.2012v25n4p293

Direitos autorais 2012 PRABHU kOLANDHASAMY, Bragadeeswaran Subramanian

Licença Creative Commons
Esta obra está licenciada sob uma licença Creative Commons Atribuição 4.0 Internacional.

Biotemas. UFSC, Florianópolis, SC, Brasil, eISSN 2175-7925

Licença Creative Commons
Este periódico está licenciado conforme Creative Commons Atribuição 4.0 Internacional.