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Odour priming of a mosquito-specialist predator's vision-based detouring decisions.
Biochem Biophys Res Commun
July 2021
School of Biological Sciences, University of Canterbury, Private Bag, 4800, Christchurch, New Zealand; International Centre of Insect Physiology and Ecology, Thomas Odhiambo Campus, P.O. Box 30, Mbita Point, Kenya.
A capacity to execute long detours that are planned ahead of time has cognitive implications pertaining to reliance on internal representation. Here we investigate the detouring behaviour of Evarcha culicivora, an East African salticid spider that specializes at preying on blood-carrying mosquitoes. The findings from our experiments are the first evidence of a salticid making detouring plans based on whether the path chosen leads to more preferred instead of less preferred prey, as well as the first evidence of olfactory priming effects on motivation and selective attention in the context of detouring.
View Article and Find Full Text PDFInfluence of seeing a red face during the male-male encounters of mosquito-specialist spiders.
Learn Behav
March 2020
Entomology and Nematology Department, University of Florida, P.O. Box 110620, Gainesville, FL, 32611-0620, USA.
Males of Evarcha culicivora, an East African jumping spider (Salticidae), have bright red faces. Here, we investigated how seeing a red face might influence a male's behaviour during encounters with another male. We applied black eyeliner to conceal the red on a male's face and measured the spectral properties of male faces with and without the eyeliner.
View Article and Find Full Text PDFIntricate predatory decisions by a mosquito-specialist spider from Malaysia.
R Soc Open Sci
October 2014
School of Biological Sciences, University of Canterbury , Private Bag 4800, Christchurch, New Zealand ; International Centre of Insect Physiology and Ecology (ICIPE), Thomas Odhiambo Campus, PO Box 30, Mbita Point 40305, Kenya.
Paracyrba wanlessi is a southeast Asian jumping spider (Salticidae) that lives in the hollow internodes of fallen bamboo and preys on the larvae, pupae and adults of mosquitoes. In contrast to Evarcha culicivora, an East African salticid that is also known for actively targeting mosquitoes as preferred prey, there was no evidence of P. wanlessi choosing mosquitoes on the basis of species, sex or diet.
View Article and Find Full Text PDFCross-modality effects of prey odour during the intraspecific interactions of a mosquito-specialist predator.
Ethology
June 2014
School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand, Telephone: +64 3 364 2987, ext. 7068, Fax number: +64 3 364 2590. International Centre of Insect Physiology and Ecology (ICIPE), Thomas Odhiambo Campus, P.O. Box 30, Mbita Point, Kenya.
One of the predictions from evolutionary game theory is that individuals will increase their willingness (i.e., become primed) to escalate aggression when they detect the presence of a limiting resource.
View Article and Find Full Text PDFOlfaction-based anthropophily in a mosquito-specialist predator.
Biol Lett
August 2011
School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
Evarcha culicivora is an unusual salticid spider because it feeds indirectly on vertebrate blood by choosing blood-carrying mosquitoes as preferred prey. Its preferred mosquitoes are Anopheles, the genus to which all human malaria vectors belong. Here, we show that human odour, which is known to be salient to malaria vectors, is also salient to the adults and juveniles of E.
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