Diet and diet-associated heavy metal accumulation in an insectivorous bat (Hipposideros speoris) adapted to dwell in two discrete habitats

Insectivorous bats provide valuable services to agriculture by suppressing crop pests. However, the possibility of toxic metal accumulation in bats with reference to their diet is understudied. We studied the difference in diet and diet-associated heavy metal accumulation in Schneider's leaf-no...

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Autores principales:	Chinnaperamanoor Madhappan Murugan, Valliyappan Mahandran, Govindharaj Vinothini, Douglas J. H. Shyu, Parthasarathy Thiruchenthil Nathan
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Bat guano Diet Heavy metals Farm Mine Seasons Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/27f549d29591480289576c2aeb394018
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spelling	oai:doaj.org-article:27f549d29591480289576c2aeb3940182021-11-30T04:17:59ZDiet and diet-associated heavy metal accumulation in an insectivorous bat (Hipposideros speoris) adapted to dwell in two discrete habitats2667-010010.1016/j.envc.2021.100386https://doaj.org/article/27f549d29591480289576c2aeb3940182021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2667010021003607https://doaj.org/toc/2667-0100Insectivorous bats provide valuable services to agriculture by suppressing crop pests. However, the possibility of toxic metal accumulation in bats with reference to their diet is understudied. We studied the difference in diet and diet-associated heavy metal accumulation in Schneider's leaf-nosed bat (Hipposideros speoris), a species that lives in two discrete habitats (farm and mine) in southern India. Guano samples were collected from respective roost sites during the dry and wet seasons of three consecutive years (2015−2017). Microscopic diet analysis indicated the presence of insects belonging to six orders (Lepidoptera, Coleoptera, Diptera, Hymenoptera, Hemiptera, and Homoptera). Irrespective of habitat, the probability of finding each insect order in the bat diet was high during the wet season. Guano samples were screened for six heavy metal residues (Al, Co, Ni, Cr, Pb, and Hg); these residues varied across the sites and seasons. Aluminum was detected at significantly higher (∼2.5 ×) concentrations in mine bats (dry season: 7.03 ± 0.60 mg/g and wet season: 7.10 ± 1.44 mg/g) compared to farm bats (dry season: 2.52 ± 0.40 mg/g and wet season: 3.28 ± 0.92 mg/g). Guano contained heavy metals in the following order of concentration: Al, Co, Ni, Cr, Pb, and Hg. Irrespective of seasons, all were found at significantly higher concentrations in guano from mine bats than farm bats. This study, therefore, shows a plausible “habitat effect” on heavy metal accumulation in bats. Further, this study sheds light on the potential use of bat guano as a proxy to measure heavy metals that pass through the food web in different environments.Chinnaperamanoor Madhappan MuruganValliyappan MahandranGovindharaj VinothiniDouglas J. H. ShyuParthasarathy Thiruchenthil NathanElsevierarticleBat guanoDietHeavy metalsFarmMineSeasonsEnvironmental sciencesGE1-350ENEnvironmental Challenges, Vol 5, Iss , Pp 100386- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Bat guano Diet Heavy metals Farm Mine Seasons Environmental sciences GE1-350
spellingShingle	Bat guano Diet Heavy metals Farm Mine Seasons Environmental sciences GE1-350 Chinnaperamanoor Madhappan Murugan Valliyappan Mahandran Govindharaj Vinothini Douglas J. H. Shyu Parthasarathy Thiruchenthil Nathan Diet and diet-associated heavy metal accumulation in an insectivorous bat (Hipposideros speoris) adapted to dwell in two discrete habitats
description	Insectivorous bats provide valuable services to agriculture by suppressing crop pests. However, the possibility of toxic metal accumulation in bats with reference to their diet is understudied. We studied the difference in diet and diet-associated heavy metal accumulation in Schneider's leaf-nosed bat (Hipposideros speoris), a species that lives in two discrete habitats (farm and mine) in southern India. Guano samples were collected from respective roost sites during the dry and wet seasons of three consecutive years (2015−2017). Microscopic diet analysis indicated the presence of insects belonging to six orders (Lepidoptera, Coleoptera, Diptera, Hymenoptera, Hemiptera, and Homoptera). Irrespective of habitat, the probability of finding each insect order in the bat diet was high during the wet season. Guano samples were screened for six heavy metal residues (Al, Co, Ni, Cr, Pb, and Hg); these residues varied across the sites and seasons. Aluminum was detected at significantly higher (∼2.5 ×) concentrations in mine bats (dry season: 7.03 ± 0.60 mg/g and wet season: 7.10 ± 1.44 mg/g) compared to farm bats (dry season: 2.52 ± 0.40 mg/g and wet season: 3.28 ± 0.92 mg/g). Guano contained heavy metals in the following order of concentration: Al, Co, Ni, Cr, Pb, and Hg. Irrespective of seasons, all were found at significantly higher concentrations in guano from mine bats than farm bats. This study, therefore, shows a plausible “habitat effect” on heavy metal accumulation in bats. Further, this study sheds light on the potential use of bat guano as a proxy to measure heavy metals that pass through the food web in different environments.
format	article
author	Chinnaperamanoor Madhappan Murugan Valliyappan Mahandran Govindharaj Vinothini Douglas J. H. Shyu Parthasarathy Thiruchenthil Nathan
author_facet	Chinnaperamanoor Madhappan Murugan Valliyappan Mahandran Govindharaj Vinothini Douglas J. H. Shyu Parthasarathy Thiruchenthil Nathan
author_sort	Chinnaperamanoor Madhappan Murugan
title	Diet and diet-associated heavy metal accumulation in an insectivorous bat (Hipposideros speoris) adapted to dwell in two discrete habitats
title_short	Diet and diet-associated heavy metal accumulation in an insectivorous bat (Hipposideros speoris) adapted to dwell in two discrete habitats
title_full	Diet and diet-associated heavy metal accumulation in an insectivorous bat (Hipposideros speoris) adapted to dwell in two discrete habitats
title_fullStr	Diet and diet-associated heavy metal accumulation in an insectivorous bat (Hipposideros speoris) adapted to dwell in two discrete habitats
title_full_unstemmed	Diet and diet-associated heavy metal accumulation in an insectivorous bat (Hipposideros speoris) adapted to dwell in two discrete habitats
title_sort	diet and diet-associated heavy metal accumulation in an insectivorous bat (hipposideros speoris) adapted to dwell in two discrete habitats
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/27f549d29591480289576c2aeb394018
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Diet and diet-associated heavy metal accumulation in an insectivorous bat (Hipposideros speoris) adapted to dwell in two discrete habitats

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