Some Cues Used by the Leptodactylid Frog, Engystomops pustulosus, in Selection of the Oviposition Site

Copeia ◽  
1966 ◽  
Vol 1966 (2) ◽  
pp. 225 ◽  
Author(s):  
Owen J. Sexton ◽  
Edward P. Ortleb
Keyword(s):  
Oviposition Site ◽  
Selection Of ◽  
Engystomops Pustulosus

scholarly journals On Oviposition, Olfactory Conditioning and Host Selection in Rhizopertha Dominica Fab. (Insecta, Coleoptera)

1941 ◽  
Vol 18 (1) ◽  
pp. 62-78
Author(s):  
A. C. CROMBIE
Keyword(s):  
Host Selection ◽  
Olfactory Receptors ◽  
Oviposition Site ◽  
Stored Grain ◽  
Olfactory Conditioning ◽  
Rhizopertha Dominica ◽  
Opposite Sex ◽  
Tactile Sensations ◽  
Sense Of Touch ◽  
Selection Of

The senses used in food finding and the factors inducing oviposition in Rhizopertha dominica (Fab.), a Bostrichid beetle pest of stored grain, were investigated. The sense of smell appears to be the most important in leading the animal to an environment where food is present. Responses were obtained in an olfactometer with maize, wheat, oats and barley and with different extracts of wheat and maize. The use of the sense of sight was also investigated. Once within an environment having the odour of food the sense of touch appears to be paramount in the selection of oviposition site. The influence of size, shape and texture were investigated. But in the absence of appropriate patterns of stimuli involving both olfactory and tactile sensations, restraint from oviposition was exercised. No predilection was shown for oviposition or feeding in the food in which they were reared as larvae. Neither did the larvae especially choose for entry substances in which their parents have been reared. The animal can be made tolerant to the odour of peppermint instead of repelled by it in an olfactometer by exposing the adults to the odour of peppermint for a few weeks. The effect wears off after 10-14 days' isolation from peppermint in wheat. Olfactory receptors which appear to be located on the antennae and legs were used in both food-finding and recognition of the opposite sex. A list is given of the substances in which the animal was reared. The bearing of these results on the problem of "gestalt" in conditioning, and on changes in habit in economic insects, is discussed.

Oviposition site selection of the Alcon blue butterfly at the northern range margin

2016 ◽  
Vol 20 (6) ◽  
pp. 1059-1067 ◽  
Author(s):  
Margus Vilbas ◽  
Toomas Esperk ◽  
Triin Edovald ◽  
Ants Kaasik ◽  
Tiit Teder
Keyword(s):  
Site Selection ◽  
Oviposition Site ◽  
Oviposition Site Selection ◽  
Range Margin ◽  
Alcon Blue ◽  
Blue Butterfly ◽  
Selection Of

scholarly journals Suboptimal larval habitats modulate oviposition of the malaria vector mosquitoAnopheles gambiae

2015 ◽  
Author(s):  
Eunho Suh ◽  
Dong-Hwan Choe ◽  
Ahmed M Saveer ◽  
Laurence J Zwiebel
Keyword(s):  
Malaria Vector ◽  
Site Selection ◽  
Oviposition Preference ◽  
Oviposition Site ◽  
Oviposition Site Selection ◽  
Larval Habitats ◽  
Dimethyl Disulphide ◽  
Gravid Females ◽  
Oviposition Sites ◽  
Selection Of

Selection of oviposition sites by gravid females is a critical behavioural preference in the reproductive cycle ofAnopheles gambiae, the principal Afrotropical malaria vector mosquito. Several studies suggest this decision is mediated by semiochemicals associated with potential oviposition sites. To better understand the chemosensory basis of this behaviour and identify compounds that can modulate oviposition, we examined the generally held hypothesis that suboptimal larval habitats give rise to semiochemicals that negatively influence the oviposition preference of gravid females. Dual-choice bioassays indicated that oviposition sites conditioned in this manner do indeed foster significant and concentration dependent aversive effects on the oviposition site selection of gravid females. Headspace analyses derived from aversive habitats consistently noted the presence of dimethyl disulphide (DMDS), dimethyl trisulphide (DMTS) and 6-methyl-5-hepten-2-one (sulcatone) each of which unitarily affectedAn. gambiaeoviposition preference. Electrophysiological assays across the antennae, maxillary palp, and labellum of gravidAn. gambiaerevealed differential responses to these semiochemicals. Taken together, these findings validate the hypothesis in question and suggest that suboptimal environments forAn. gambiaelarval development results in the release of DMDS, DMTS and sulcatone that impact the response valence of gravid females to directly modulate the chemical ecology of oviposition site selection.

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