SciELO - Scientific Electronic Library Online

 
vol.66 número4Antimicrobial activity of Cymbopogon citratus (Poaceae) on Streptococcus mutans biofilm and its cytotoxic effectsStingless bee honeys from Soconusco, Chiapas: a complementary approach índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Revista de Biología Tropical

versão On-line ISSN 0034-7744versão impressa ISSN 0034-7744

Resumo

ANDRADE-ZUNIGA, Erick M.; MORALES, Miguel  e  ARIANO-SANCHEZ, Daniel. Toxicity of the feathers of Yellow Grosbeak, Pheucticus chrysopeplus (Passeriformes: Cardinalidae), a chemically defended neotropical bird. Rev. biol. trop [online]. 2018, vol.66, n.4, pp.1530-1535. ISSN 0034-7744.  http://dx.doi.org/10.15517/rbt.v66i4.32059.

Chemical defense is a widespread mechanism on many animals and plants. However, just a few cases are known for avian species. In this study we evaluate the toxicity of Pheucticus chrysopeplus feather extract via lethality test with brine shrimp (Artemia salina) as an in vivo model. Mortality of A. salina was evaluated after 24 hour exposure to artificial seawater, methanol, and the methanolic feather extract. Kruskal-Wallis test showed a significant difference in mortality between treatments (X2 = 65.25, P < 0.0001, n = 50). With this we describe P. chrysopeplus as the first known toxic avian species of Guatemala and Central America, raising awareness about its conservation and the identification of the toxic substance present in its feathers. We also highlight the possible mimicry mechanism taking part between P. chrysopeplus and two sympatric oriole species (Icterus pectoralis and I. pustulatus).

Palavras-chave : toxicity; lethality test; aposematism; mimicry; brine shrimp; yellow grosbeak; Guatemala.

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )