Comportamento de casais Rhynchotus rufescens em cativeiro: relação com imobilidade tônica e eficiência reprodutiva
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Data
2012-06-28
Autores
Alves, Michaela de Freitas Rosa [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
A dificuldade da produção da perdiz está relacionada à baixa fertilidade dos ovos, relacionado, entre outras coisas, à baixa adaptação destas aves ao cativeiro, que impossibilita a expressão de seu comportamento selecionado durante milhares de gerações nas condições naturais. O objetivo foi estudar a relação do comportamento de casais com a eficiência reprodutiva, determinada pela produção de ovos, ovos férteis e perdigotos saudáveis, bem como com o tempo de imobilidade tônica, durante a estação reprodutiva. Este trabalho foi dividido em quatro capítulos. No primeiro capítulo, abordou-se aspectos biológicos e ecológicos da espécie, e de sua domesticação. No segundo capítulo, analisou-se o comportamento de casais com e sem postura. Os dados mostram que as aves dos boxes sem postura não formaram casais, uma vez que não apresentaram comportamentos reprodutivos e nem comportamentos agonísticos relacionados aos rituais de cópula. Os comportamentos de perseguir e de ser seguido foram exclusivos de machos e fêmeas, respectivamente. No terceiro capítulo, discutiu-se a relação do comportamento com o tempo de imobilidade tônica (IT) das aves. Os comportamentos mais frequentes foram os mesmos, independente do tempo em IT. Aves com curta IT não apresentaram comportamentos relacionados à corte, mas apresentaram a mesma frequência de monta que as aves com longa IT. No quarto capítulo, comparou-se os comportamentos entre casais com alta e baixa eficiência reprodutiva. Os dados desse capítulo mostram que fêmeas de casais com baixa eficiência reprodutiva ameaçam mais os machos enquanto em casais de alta eficiência os machos ameaçam mais que as fêmeas
The difficulty of Red-winged Tinamus (Rhynchotus rufescens) production is related to the low fertility rate of eggs resulting from, among other things, the inability of these birds to adapt to captivity. This prevents the expression of their standard behavior selected for thousands of generations under natural conditions. The objective of this thesis was to study the relationship between the behavior of couples and their reproductive efficiency, determined by egg production, fertile eggs and healthy Red-winged Tinamus, as well as the tonic immobility time during the breeding season. This work was divided into four chapters. In the first chapter, we discuss biological and ecological aspects of the species, and their domestication. In the second chapter, we study the behavior of couples with and without posture, using birds with long tonic immobility. The data show that the birds from the boxes without oviposition did not form couples, since there were no reproductive behaviors or agonistic behaviors related to mating rituals. The behavior of chasing and being followed were unique to males and females, respectively. In the third chapter, we discuss the relationship between behavior and time of tonic immobility (TI). The most frequent behaviors were the same regardless of the TI time. Birds with short TI did not show courtship related behaviors, but had the same mount frequency as the breeding birds with long TI. In the fourth chapter, we made a comparison between the behavior of couples with high and low reproductive efficiency. The data in this chapter show that female with low reproductive efficiency threaten more males while in couples with high efficiency the males threaten more than females
The difficulty of Red-winged Tinamus (Rhynchotus rufescens) production is related to the low fertility rate of eggs resulting from, among other things, the inability of these birds to adapt to captivity. This prevents the expression of their standard behavior selected for thousands of generations under natural conditions. The objective of this thesis was to study the relationship between the behavior of couples and their reproductive efficiency, determined by egg production, fertile eggs and healthy Red-winged Tinamus, as well as the tonic immobility time during the breeding season. This work was divided into four chapters. In the first chapter, we discuss biological and ecological aspects of the species, and their domestication. In the second chapter, we study the behavior of couples with and without posture, using birds with long tonic immobility. The data show that the birds from the boxes without oviposition did not form couples, since there were no reproductive behaviors or agonistic behaviors related to mating rituals. The behavior of chasing and being followed were unique to males and females, respectively. In the third chapter, we discuss the relationship between behavior and time of tonic immobility (TI). The most frequent behaviors were the same regardless of the TI time. Birds with short TI did not show courtship related behaviors, but had the same mount frequency as the breeding birds with long TI. In the fourth chapter, we made a comparison between the behavior of couples with high and low reproductive efficiency. The data in this chapter show that female with low reproductive efficiency threaten more males while in couples with high efficiency the males threaten more than females
Descrição
Palavras-chave
Ave - Reprodução, Perdiz (Ave), Produção animal, Animais selvagens em cativeiro, Domesticação, Domestication
Como citar
ALVES, Michaela de Freitas Rosa. Comportamento de casais Rhynchotus rufescens em cativeiro: relação com imobilidade tônica e eficiência reprodutiva. 2012. xvi, 125 f. Dissertação (mestrado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, 2012.