Leks
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. The relevance of age and nutritional status on the mating competitiveness of medfly males (Diptera: Teprhitidae)
Results of previous investigations trying to ascertain which physiological factors are more important to the mating success of medfly males are controversial. In part, this controversy owes to the fact that each factor was evaluated by an independent study using different experimental designs and populations. In the present study we compare the roles of age
Zoologia (Curitiba). Publicado em: 2013-10
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2. Effects of forest fragmentation in system leks of Corapipo gutturalis (Aves: Pipridae) in a landscape in the Central Amazon / Efeitos da fragmentação florestal em leques de Corapipo gutturalis (Aves: Pipridae) em uma paisagem da Amazônia Central
Efeito da fragmentação florestal em palcos de Corapipo gutturalis. A perda da floresta e transformação da paisagem em um mosaico de fragmentos florestais pode não só causar redução na riqueza e abundância das espécies, mas também pode levar a mudanças de comportamento e padrões de uso de habitat dentro da paisagem. Corapipo gutturalis é uma ave
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/09/2011
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3. BEHAVIORAL ECOLOGY OF BLUE MANAKIN (AVES, PIPRIDAE) IN FAR SOUTH OF ATLANTIC FOREST / ECOLOGIA COMPORTAMENTAL DO TANGARÁ CHIROXIPHIA CAUDATA (AVES, PIPRIDAE) NO EXTREMO SUL DA FLORESTA ATLÂNTICA
O Tangará Chiroxiphia caudata é um pássaro com ampla distribuição no sul da floresta atlântica, abrangendo desde florestas ombrófilas da serra do Mar até as florestas estacionais do planalto brasileiro e meridional. Embora a espécie seja bem conhecida por suas danças acrobáticas, muito do seu comportamento e ecologia são desconhecidos ou pouco es
Publicado em: 2010
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4. Estruturação genética em populações do tangará-dançarino Chiroxiphia caudata (Aves, Pipridae) no corredor costeiro da Mata Atlântica (SP) e sua importância para a conservação.
Neotropical passerine birds that inhabit forests understory are thought to be highly sedentary, which may result in greater genetic differentiation among populations than in temperate species. The species of the genus Chiroxiphia (Pipridae) perform highly specialized courtship displays in which males aggregate at traditional arenas, or ``leks, performing a p
Publicado em: 2005
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5. Female mate choice across spatial scales: influence of lek and male attributes on mating success of blue-crowned manakins
Lekking males compete for females within and among leks, yet female choice is expected to work differently at each of these spatial scales. We used paternity analyses to examine how lek versus male attributes influence mate choice in the blue-crowned manakin Lepidothrix coronata. We tested the hypotheses that females prefer (i) to mate at larger leks where a
The Royal Society.
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6. Overt female mate competition and preference for central males in a lekking antelope
In mammals, there exists only scant evidence of female mate choice in species mating on arenas, so-called leks. This has led to hypotheses of lek evolution that are based on benefits to females from reduced harassment by males, low predation risk, or improved availability of scarce nutrients. Here I report that female topi antelopes (Damaliscus lunatus) comp
The National Academy of Sciences.
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7. Widespread accumulation of [3H]testosterone in the spinal cord of a wild bird with an elaborate courtship display
Elaborate courtship displays are relatively common features of the masculine reproductive behavior in birds. However, little is known about their neural and hormonal control. One bird that performs such a display is the golden-collared manakin (Manacus vitellinus) of Panamanian forests. Adult males, but not females, perform a physically intense display requi
The National Academy of Sciences.
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8. It takes two to tango: reproductive skew and social correlates of male mating success in a lek-breeding bird
Variance in reproductive success among individuals is a defining characteristic of many social vertebrates. Yet, our understanding of which male attributes contribute to reproductive success is still fragmentary in most cases. Male–male reproductive coalitions, where males jointly display to attract females, are of particular interest to evolutionary biolo
The Royal Society.