Animal Foraging Behavior
Mostrando 25-33 de 33 artigos, teses e dissertações.
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25. Estudo sobre orçamento de atividade do Boto Cinza (Sotalia guianensis) no litoral sul do Rio Grande do Norte
A fundamental analysis on Behavioral Ecology is the construction of Activities Budget, which can be defined as the quantification of the time that each animal uses in activities that are important for its survival and reproduction. Initially developed for theoretical studies about Optimal Foraging, the construction of Activities Budgets has recently being us
Publicado em: 2006
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26. DispersÃo e predaÃÃo de grandes sementes por Sciurus aestuans L. em fragmentos de floresta AtlÃntica montana no Estado do EspÃrito Santo, Brasil
The plantâdispersor interactions influence the adaptive values of plants and animals, acting directly on the reproductive characters of plant species and life histories of animal species. The fruvigory pattern influences the seed shadow patterns of plants, the predation rates by invertebrates and consequently the germination, seedling survival and adult rec
Publicado em: 2004
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27. Importância de diferentes microhabitats no comportamento de forrageio por presas do mico-leão-preto, Leontopithecus chrysopygus (Mikan) (Mammalia, Callitrichidae)
Prey foraging behavior in the Black Lion Tamarin, Leontopithecus chrysopygus (Mikan, 1823) was observed in the Caetetus Ecological Station, southeastern Brazil, during 550 hours of direct observations between December 1993 and February 1995. The scan sampling method was used to gather data. These tamarins use manipulative, specific-site foraging behavior. Wh
Revista Brasileira de Zoologia. Publicado em: 2001-07
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28. Forrageamento de aranhas de teia orbicular : influencia do tamanho da presa e local de contato na teia
Tbe foraging behavior of tbe orb-weaving spiders Micrathena nigrichelis (Araneidae), with a vertical orb and Leucauge sp. (Tetragnathidae), with an inclined web -(458) was studíed. Stimulations witb a tunning fork were done, to test the hipothesis that the assimetry of tbe webs can be explained by temporal parameters of the predatory response of spiders (fu
Publicado em: 1993
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29. Evolution of foraging behavior in Drosophila by density-dependent selection
One of the rare examples of a single major gene underlying a naturally occurring behavioral polymorphism is the foraging locus of Drosophila melanogaster. Larvae with the rover allele, forR, have significantly longer foraging path lengths on a yeast paste than do those homozygous for the sitter allele, fors. These variants do not differ in general activity i
The National Academy of Sciences of the USA.
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30. A cGMP-Dependent Protein Kinase Gene, foraging, Modifies Habituation-Like Response Decrement of the Giant Fiber Escape Circuit in Drosophila
The Drosophila giant fiber jump-and-flight escape response is a model for genetic analysis of both the physiology and the plasticity of a sensorimotor behavioral pathway. We previously established the electrically induced giant fiber response in intact tethered flies as a model for habituation, a form of nonassociative learning. Here, we show that the rate o
Cold Spring Harbor Laboratory Press.
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31. Cost-benefit analysis potential in feeding behavior of a predatory snail by integration of hunger, taste, and pain
Hunger/satiation state interacts with appetitive and noxious stimuli to determine feeding and avoidance responses. In the predatory marine snail Pleurobranchaea californica, food chemostimuli induced proboscis extension and biting at concentration thresholds that varied directly with satiation state. However, food stimuli also tended to elicit avoidance beha
The National Academy of Sciences.
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32. Sustained metabolic scope.
Sustained metabolic rates (SusMR) are time-averaged metabolic rates that are measured in free-ranging animals maintaining constant body mass over periods long enough that metabolism is fueled by food intake rather than by transient depletion of energy reserves. Many authors have suggested that SusMR of various wild animal species are only a few times resting
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33. Modes and origins of mechanical and ethological isolation in angiosperms.
Mechanical and ethological isolation between species is widespread in angiosperms with specialized animal-pollinated flowers, being recorded in 29 species groups belonging to 27 genera and 16 families. Mechanical isolation occurs in two forms. (i) The common type, designated the Salvia type, operates when two or more species of flowers are adapted for differ