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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
03/10/2013 |
Data da última atualização: |
03/10/2013 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MACEDO, M. V.; MONTEIRO, R. F.; SILVA, M. S. G. M. e; MAYHEW, P. J. |
Afiliação: |
MARGARETE VALVERDE DE MACEDO, UFRJ; RICARDO FERREIRA MONTEIRO, UFRJ; MARIANA SILVEIRA GUERRA MOURA E SILVA, CNPMA; PETER J. MAYHEW, University of York. |
Título: |
Male-male contests for mates, sexual size dimorphism, and sex ratio in a natural population of a solitary parasitoid. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Behavioural Processes, Amsterdam, v. 100, p. 1-8, 2013. |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Understanding how different behavioural and life history traits interact is fundamental to developing ethological theory. Here we study the interaction of male-male competition for mates and sexual size dimorphism in a solitary wasp, with implications for sex allocation. In Hymenoptera, females are normally larger than males suggesting that males do not benefit as much as females from larger size. However, in our focal species, a solitary Eurytoma wasp, males compete for mates by pairwise contests at female emergence sites, suggesting that male size may strongly affect fitness. In contests observed in the field, larger males were more likely to win fights, and males fighting at female emergence sites were much larger than average males. Males showed higher variance in body size than females, such that all the smallest individuals were males, a majority of medium-to-large individuals were female, but the majority of largest individuals were male. Our data suggest that sexual size dimorphism in this species has been affected by intra-sexual selection for male size, which may have implications for sex allocation. |
Palavras-Chave: |
Animal contests; Conditional sex allocation; Etologia; Field fitness; Mating behaviour. |
Thesagro: |
Comportamento animal; Himenóptero; Vespa. |
Thesaurus Nal: |
allometry; body size. |
Categoria do assunto: |
S Ciências Biológicas |
Marc: |
LEADER 01958naa a2200277 a 4500 001 1967717 005 2013-10-03 008 2013 bl uuuu u00u1 u #d 100 1 $aMACEDO, M. V. 245 $aMale-male contests for mates, sexual size dimorphism, and sex ratio in a natural population of a solitary parasitoid.$h[electronic resource] 260 $c2013 520 $aAbstract: Understanding how different behavioural and life history traits interact is fundamental to developing ethological theory. Here we study the interaction of male-male competition for mates and sexual size dimorphism in a solitary wasp, with implications for sex allocation. In Hymenoptera, females are normally larger than males suggesting that males do not benefit as much as females from larger size. However, in our focal species, a solitary Eurytoma wasp, males compete for mates by pairwise contests at female emergence sites, suggesting that male size may strongly affect fitness. In contests observed in the field, larger males were more likely to win fights, and males fighting at female emergence sites were much larger than average males. Males showed higher variance in body size than females, such that all the smallest individuals were males, a majority of medium-to-large individuals were female, but the majority of largest individuals were male. Our data suggest that sexual size dimorphism in this species has been affected by intra-sexual selection for male size, which may have implications for sex allocation. 650 $aallometry 650 $abody size 650 $aComportamento animal 650 $aHimenóptero 650 $aVespa 653 $aAnimal contests 653 $aConditional sex allocation 653 $aEtologia 653 $aField fitness 653 $aMating behaviour 700 1 $aMONTEIRO, R. F. 700 1 $aSILVA, M. S. G. M. e 700 1 $aMAYHEW, P. J. 773 $tBehavioural Processes, Amsterdam$gv. 100, p. 1-8, 2013.
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Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
29/05/2007 |
Data da última atualização: |
29/05/2007 |
Autoria: |
LEITE, F. de L.; ZEIMATH, E. C.; HERRMANN JUNIOR, P. S. de P. |
Título: |
Análise de Minerais do Solo por Espectroscopia de Força Atômica. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
São Carlos, SP: Embrapa Instrumentação Agropecuária, 2005. 7 p. |
Série: |
(Embrapa Instrumentação Agropecuária. Comunicado Técnico, 70). |
Idioma: |
Português |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPDIA/10479/1/CT70_2005.pdf
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Marc: |
LEADER 00487nam a2200133 a 4500 001 1028204 005 2007-05-29 008 2005 bl uuuu u0uu1 u #d 100 1 $aLEITE, F. de L. 245 $aAnálise de Minerais do Solo por Espectroscopia de Força Atômica. 260 $aSão Carlos, SP: Embrapa Instrumentação Agropecuária, 2005. 7 p.$c2005 490 $a(Embrapa Instrumentação Agropecuária. Comunicado Técnico, 70). 700 1 $aZEIMATH, E. C. 700 1 $aHERRMANN JUNIOR, P. S. de P.
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