Selection of oviposition sites by the cowpea weevils Callosobruchus rhodesianus (Pic.) and Callosobruchus maculatus (F.)

1995 ◽  
Vol 16 (02) ◽  
pp. 145-149
Author(s):  
D. P. Giga
Keyword(s):  
Callosobruchus Maculatus ◽  
Callosobruchus Rhodesianus ◽  
Oviposition Sites ◽  
Selection Of

Habitat use by stream-breeding frogs in south-east Sulawesi, with some preliminary observations on community organization

2004 ◽  
Vol 20 (4) ◽  
pp. 439-448 ◽  
Author(s):  
Graeme R. Gillespie ◽  
David Lockie ◽  
Michael P. Scroggie ◽  
Djoko T. Iskandar
Keyword(s):  
Species Richness ◽  
Habitat Use ◽  
Community Organization ◽  
Habitat Associations ◽  
Habitat Partitioning ◽  
Tropical Stream ◽  
Frog Species ◽  
Oviposition Sites ◽  
Selection Of ◽  
Spatial Habitat

The habitat associations of stream-breeding frogs were examined along a series of stream transects on Buton Island in south-east Sulawesi, Indonesia. Of the eight frog species located along streams, four were observed breeding in stream habitats. We examined spatial habitat partitioning among these species. Three of the four species were found to be associated with a non-random selection of the available perch sites. Strong partitioning between species in habitat associations was found; partitioning of the available habitat space was primarily associated with differences in proximity to stream features, and in the height of perch sites. General observations indicated that oviposition sites of most species were associated with the microhabitats in which the adult frogs were found. All four stream-breeding species appear to have synchronous breeding phenologies and the spatial relationships of these species within the habitat space appear to reflect partitioning of calling sites and oviposition sites. The stream-breeding frog community in this region of Sulawesi has much lower species richness and less specialized habitat use compared with other tropical stream-breeding frog communities in the region.

Selection of oviposition sites by ground beetles Abaris basistriata and Selenophorus seriatoporus for mass rearing purposes

BioControl ◽  
2019 ◽  
Vol 64 (3) ◽  
pp. 315-321
Author(s):  
Crislany L. Barbosa-Andrade ◽  
Daniel J. Andrade ◽  
Sidnéia T. S. Matos ◽  
Luciano Nogueira ◽  
Francisco J. Cividanes
Keyword(s):  
Mass Rearing ◽  
Ground Beetles ◽  
Oviposition Sites ◽  
Selection Of

scholarly journals Selection of Oviposition Sites by Libelloides coccajus (Denis & Schiffermüller, 1775) (Neuroptera: Ascalaphidae), North of the Alps: Implications for Nature Conservation

2014 ◽  
Vol 2014 ◽  
pp. 1-10
Author(s):  
Markus Müller ◽  
Jürg Schlegel ◽  
Bertil O. Krüsi
Keyword(s):  
Peripheral Populations ◽  
Term Survival ◽  
Local Conditions ◽  
Northern Switzerland ◽  
Road Verge ◽  
The Alps ◽  
Suitable Habitats ◽  
Oviposition Sites ◽  
Selection Of

(1) The survival of peripheral populations is often threatened, especially in a changing environment. Furthermore, such populations frequently show adaptations to local conditions which, in turn, may enhance the ability of a species to adapt to changing environmental conditions. In conservation biology, peripheral populations are therefore of particular interest. (2) In northern Switzerland and southern Germany, Libelloides coccajus is an example of such a peripheral species. (3) Assuming that suitable oviposition sites are crucial to its long-term survival, we compared oviposition sites and adjacent control plots with regard to structure and composition of the vegetation. (4) Vegetation structure at and around oviposition sites seems to follow fairly stringent rules leading to at least two benefits for the egg clutches: (i) reduced risk of contact with adjacent plants, avoiding delayed drying after rainfall or morning dew and (ii) reduced shading and therefore higher temperatures. (5) Furthermore, the study showed that it is possible to successfully create secondary habitats for L. coccajus, as shown by a road verge in one of our study areas. It is likely that other artificial habitats such as abandoned gravel pits and quarries may also provide suitable habitats.

Studies on the ecology of Oncopera intricata Walker (Lepidoptera: Hepialidae). 2. Selection of oviposition sites by the female moths.

1965 ◽  
Vol 13 (5) ◽  
pp. 807 ◽  
Author(s):  
EJ Martyn
Keyword(s):  
Natural Populations ◽  
Wire Mesh ◽  
Grass Cover ◽  
Reasonable Number ◽  
Wire Mesh Cage ◽  
Mesh Cage ◽  
Oviposition Sites ◽  
Selection Of ◽  
Mated Female

The results are reported of studies on the effect of length and density of pasture cover on the selection of oviposition sites by the mated female moths of Oncopera intricata Walker. Moths were placed in a wire-mesh cage, 7 ft in diameter and 2 ft high, in which they were given a choice of pasture cover in which to oviposit. It was found that the length of the grass cover was important in causing settling by the moths since when only short cover was provided, few moths laid their eggs in the plots irrespective of the density of the cover provided. When long cover was provided in some of the plots the preferred sites were where the cover was long and dense but a reasonable number of moths oviposited in short sparse cover. Where long cover alone was provided the dense plots were preferred to the sparse. The implications of these results on the pattern of distribution and survival in natural populations is discussed.

Laboratory analysis of oviposition behaviour in the red locust, Nomadacris septemfasciata (Serv.)

1965 ◽  
Vol 55 (4) ◽  
pp. 733-745 ◽  
Author(s):  
D. F. Woodrow
Keyword(s):  
Particle Size ◽  
Chemical Composition ◽  
High Surface ◽  
Nomadacris Septemfasciata ◽  
Red Locust ◽  
Gravid Females ◽  
Final Acceptance ◽  
Very High ◽  
Oviposition Sites ◽  
Selection Of

Gravid females of the red locust, Nomadacris septemlasciata (Serv.), were initially influenced by the microclimate in the selection of oviposition sites, and a laboratory investigation showed that females preferred to lay in well-illuminated areas with a soil temperature between 43 and 37°C., and avoided areas of very high surface humidity. Final acceptance of the soil took place only after the locust had probed with its ovipositor, and experiments demonstrated that particle size, compaction, moisture content and chemical composition of the soil all influenced the choice of oviposition site, while pH did not.

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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