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Feeding effectiveness of Megaphobema mesomelas (Araneae, Theraphosidae) on two prey types
dc.creator | Kosiba, Scott | |
dc.creator | Allen Monge, Pablo E. | |
dc.creator | Barrantes Montero, Gilbert | |
dc.date.accessioned | 2019-09-10T21:54:28Z | |
dc.date.available | 2019-09-10T21:54:28Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 2050-9928 | |
dc.identifier.uri | https://hdl.handle.net/10669/79059 | |
dc.description.abstract | Prey selection is essential for individual fitness; therefore, it would be expected that a predator would select prey of a higher rank (energy/time) when exposed to prey of differing quality. In this paper, we compare the feeding effectiveness (biomass consumed/time) of Megaphobema mesomelas (O. P.-Cambridge, 1892) in captivity, and the preference between two prey types: beetles and crickets. Spiders are more effective when feeding on crickets. The heavy exoskeleton of beetles increases prey-handling time in order to access a relatively smaller amount of edible tissue. Effectiveness also increases with spider and prey size (mass), with larger spiders feeding more effectively on larger prey. Spiders show a strong preference for feeding upon crickets over beetles when both prey types are offered at the same time. | en |
dc.language.iso | en | |
dc.source | Bulletin of the British Arachnological Society 15(7):228-230 | |
dc.title | Feeding effectiveness of Megaphobema mesomelas (Araneae, Theraphosidae) on two prey types | en |
dc.type | artículo original | |
dc.identifier.doi | 10.13156/arac.2012.15.7.228 | |
dc.description.procedence | UCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Biología |
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Biología [1645]