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Iyer, Priya
- Patch Fidelity in Camponotus compressus Ants Foraging on Honeydew Secreted by Treehoppers
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PDF Views:75
Authors
Affiliations
1 Department of Biology, Indian Institute of Science Education and Research, Pune 411 008, IN
1 Department of Biology, Indian Institute of Science Education and Research, Pune 411 008, IN
Source
Current Science, Vol 109, No 2 (2015), Pagination: 362-366Abstract
Camponotus compressus ants are thought to be mutualistic with plant sap-sucking insects such as aphids and treehoppers, where the ants provide protection from predation and/or help maintain hygiene, in exchange for sugar-rich honeydew secreted by sapsuckers. We studied the foraging strategies and ant-treehopper interactions among C. compressus ants and Oxyrachis tarandus tree-hoppers on the plant Bauhinia tomentosa. We found that ants show fidelity to specific patches of B. tomentosa. We also found a significant correlation between hopper number and the number of visiting ants in foraging patches. Our study raises many questions about the ant-treehopper mutualism, navigation strategies and optimal foraging in C. compressus.Keywords
Camponotus compressus, Honeydew, Mutualism, Patch Fidelity, Oxyrachis tarandus.Full Text
- Impacts of Livestock Grazing on Fecal Glucocorticoid Levels and Gastrointestinal Parasite Prevalence in Blue Sheep in Spiti Valley, Western Himalayas
Abstract Views :133 |
PDF Views:0
Authors
Affiliations
1 Centre for Ecological Sciences, Indian Institute of Science, Bangalore – 560012, Karnataka, IN
2 Laboratory for the Conservation of Endangered Species (LaCONES), CSIR-Centre for Cellular and Molecular Biology, Hyderabad – 500007, Telangana, IN
1 Centre for Ecological Sciences, Indian Institute of Science, Bangalore – 560012, Karnataka, IN
2 Laboratory for the Conservation of Endangered Species (LaCONES), CSIR-Centre for Cellular and Molecular Biology, Hyderabad – 500007, Telangana, IN
Source
Journal of Endocrinology and Reproduction, Vol 26, No 1 (2022), Pagination: 45-53Abstract
Livestock grazing in protected areas is known to affect wild species. In this study, we examined fecal Glucocorticoid Metabolite Concentration (fGCM) and gastrointestinal parasite prevalence in blue sheep populations of Spiti valley, Himalayas. We collected 156 fecal samples of blue sheep from areas under intense livestock grazing and areas without small livestock during 2014-15. We also collected 27 fecal samples from livestock to examine parasite prevalence. We found that blue sheep in livestock-grazed areas had higher fGCM than non-grazed areas. Similarly, parasite prevalence was higher in areas with presence of cattle. Overall, adult females were more affected by disturbance and grazing compared to males and young ones. This is the first study to document the physiological stress response of wild ungulates to livestock grazing in Indian sub-continent. We suggest management recommendations to set aside pastures for exclusive use by wild blue sheep, regularly deworm livestock, and decrease the stray dog populationKeywords
Blue Sheep/Bharal (Pseudois nayaur), Fecal Glucocorticoid Metabolites, Livestock Grazing, Parasite Prevalence, Trans-Himalayas
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