Intra Sexual Selection
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Como os machos de Diastatops obscura (odonata: libellulidae) decidem o vencedor de uma disputa territorial? / HOW THE MALES OF Diastatops obscure (Odonata: Libellulidae) DECIDE THE WINNER OF A TERRITORIAL DISPUTE?
Apesar das brigas entre os machos serem frequentes e de existirem modelos teÃricos que postulam possÃveis regras usadas para decisÃo do vencedor, pouco suporte empÃrico direcionado ao entendimento das brigas tem sido encontrado. Provavelmente esse fato ocorre devido à dificuldade em identificar quais caracterÃsticas determinam a capacidade de luta (RHP
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2012
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2. CaracterÃsticas morfo-fisiolÃgicas como determinantes da capacidade de manutenÃÃo de territÃrios em machos de Macrothemis imitans (Odonata: Libellulidae) / Morphological and physiological features as determining of the capacity of maintenance territories in males of Macrothemis imitans(Odonata: Libellulidae)
In many animal species, males fight for the possession of territories that increase their mating chances. The fighting behavior of males may range from conflicts without physical contact to disputes with injuries and possible deaths. There are three models aiming to explain the rules adopted by males to decide the winner of a contest: war of attrition (WOA),
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2012
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3. Social and reproductive physiology and behavior of the Neotropical cichlid fish Cichlasoma dimerus under laboratory conditions
In this work we describe for the first time the social and reproductive behavior of the Neotropical fish Cichlasoma dimerus (Heckel, 1840) [Perciformes: Cichlidae], endemic to the Paraná River basin, using a comprehensive-integral approach, including morphological and physiological features. This substrate breeding fish has biparental care of the fry and pr
Neotropical Ichthyology. Publicado em: 22/07/2011
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4. Coloração ultravioleta e pigmentária em aves de Uberlândia-MG / Ultraviolet and pigmentary colouration in birds of the Uberlândia MG
Bird feathers exhibit colors that are important for intra- and inter-specific communication. These colours transmit information that be conclusive for sexual selection, predator/prey relations or to indicate the nutritional condition of the individual, besides other aspects. Information about the functionality of plumage colouration in Brazilian birds is pra
Publicado em: 2009
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5. Comparação e descrição de parâmetros acústicos do canto de Volatinia jacarina (Aves: Emberizidae) no contexto de seleção sexual
Bird songs may convey information about the quality of the male, and females can access this information during partner choice. The aim of this study was to test for correlations between acoustic parameters of songs from Volatinia jacarina males and their physical attributes. First we determined, through quantitative analysis, the degree of stereotypy in the
Publicado em: 2009
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6. Mate choice theory and the mode of selection in sexual populations
Indirect new data imply that mate and/or gamete choice are major selective forces driving genetic change in sexual populations. The system dictates nonrandom mating, an evolutionary process requiring both revised genetic theory and new data on heritability of characters underlying Darwinian fitness. Successfully reproducing individuals represent rare sel
National Academy of Sciences.
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7. How does breeding system variation modulate sexual antagonism?
The study of sexually antagonistic (SA) traits remains largely limited to dioecious (separate sex), mobile animals. However, the occurrence of sexual conflict is restricted neither by breeding system (the mode of sexual reproduction, e.g. dioecy or hermaphroditism) nor by sessility. Here, we synthesize how variation in breeding system can affect the evolutio
The Royal Society.