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First experimental evidence that a harvestman (Arachnida: Opiliones) detects odors of non-rotten dead prey by olfaction Rev. Bras. Zool.
Costa,Thaiany Miranda; Willemart,Rodrigo Hirata.
Harvestmen feed on live, dead and fresh, or decomposing animals, fungi, and plant matter, being very dependent on chemoreception to find food. Herein we performed an experiment to test if individuals of Discocyrtus pectinifemur Mello-Leitão, 1937 (Gonyleptidae) (n = 23) behave differently when in contact with olfactory cues from different sources (rotten prey, non-rotten prey and a control). Using dead crickets in a box covered with a mesh, and recording the time the harvestmen spent in the vicinities of the box, we show that D. pectinifemur detects non-rotten prey and stays longer on it than on the other two treatments. Our results contrast with a previous study on another species, showing that we should not generalize results obtained for one species....
Tipo: Info:eu-repo/semantics/other Palavras-chave: Chemoreception; Laniatores; Sensilla; Sensory ecology.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000300018
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Fruit colour and edge effects poorly explains frugivorous bird-plant interactions in disturbed semideciduous forests Biological Sciences
Pires, Luis Paulo; Gonçalves, Vanessa Fonseca; Ferreira, Giancarlo Ângelo; Camelo, Flávio Roque Bernardes; Melo, Celine de.
Fruit colour is considered an important feature mediating interactions between plants and frugivorous birds. Despite that, colour mediated interactions are context-dependent, and habitat disturbances may affect how frugivorous birds perceive fruit colours. This study assessed the influence of fruit colour and edge effect on the consumption of artificial fruits by frugivorous birds in three disturbed semideciduous forests in southeastern Brazil. In each of those areas, we performed a field experiment in which we placed artificial fruits of three different colours on plants and recorded their consumption by birds. Red-coloured fruits were ingested more often than yellow, but neither of them was consumed differently from dark-blue. Edge effect only affected...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecologia frugivory; Behaviour; Plant signals; Sensory ecology; Plant-animal communication. Ecologia de interações.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/40041
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