Using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in Chagas disease vectors

Small ectotherms, such as insects, with high surface area-to-volume ratios are usually at risk of dehydration in arid environments. We hypothesize that desiccation tolerance in insects could be reflected in their distribution, which is limited by areas with high relative values of water vapor pressu...

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Autores principales:	de la Vega, G.J., Schilman, P.E.
Formato:	JOUR
Materias:	Chagas disease vectors Desiccation tolerance Physiological ecology SDM arid environment Chagas disease climate change dehydration desiccation disease vector ecological modeling ecophysiology geographical distribution insect niche niche overlap tolerance vapor pressure Hexapoda water animal classification insect vector metabolism Mexico physiology Rhodnius South America species difference transmission Triatoma Animals Chagas Disease Dehydration Insect Vectors Species Specificity Water
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00298549_v185_n4_p607_delaVega
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00298549_v185_n4_p607_delaVega
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spelling	todo:paper_00298549_v185_n4_p607_delaVega2023-10-03T14:39:44Z Using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in Chagas disease vectors de la Vega, G.J. Schilman, P.E. Chagas disease vectors Desiccation tolerance Physiological ecology SDM arid environment Chagas disease climate change dehydration desiccation disease vector ecological modeling ecophysiology geographical distribution insect niche niche overlap tolerance vapor pressure Hexapoda water animal Chagas disease classification dehydration insect vector metabolism Mexico physiology Rhodnius South America species difference transmission Triatoma Animals Chagas Disease Dehydration Insect Vectors Mexico Rhodnius South America Species Specificity Triatoma Water Small ectotherms, such as insects, with high surface area-to-volume ratios are usually at risk of dehydration in arid environments. We hypothesize that desiccation tolerance in insects could be reflected in their distribution, which is limited by areas with high relative values of water vapor pressure deficit (VPD) (e.g., hot and dry). The main goal of this study was to explore whether incorporation of eco-physiological traits such as desiccation tolerance in arid environments can improve our understanding of species distribution models (SDM). We use a novel eco-physiological approach to understand the distribution and the potential overlap with their fundamental niche in triatomine bugs, Chagas disease vectors. The desiccation dimension for T. infestans, T. delpontei, T. dimidiata, and T. sordida niches seems to extend to very dry areas. For T. vitticeps, xeric areas seem to limit the geographical range of their realized niche. The maximum VPD limits the western and southern distributions of T. vitticeps, T. delpontei, and T. patagonica. All species showed high tolerance to desiccation with survival times (35 °C-RH ~ 15%) ranging from 24 to 38 days, except for T. dimidiata (9 days), which can be explained by a higher water-loss rate, due to a higher cuticular permeability along with a higher critical water content. This approach indicates that most of these triatomine bugs could be exploiting the dryness dimension of their fundamental niche. Incorporating such species-specific traits in studies of distribution, range, and limits under scenarios of changing climate could enhance predictions of movement of disease-causing vectors into novel regions. © 2017, Springer-Verlag GmbH Germany. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00298549_v185_n4_p607_delaVega
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chagas disease vectors Desiccation tolerance Physiological ecology SDM arid environment Chagas disease climate change dehydration desiccation disease vector ecological modeling ecophysiology geographical distribution insect niche niche overlap tolerance vapor pressure Hexapoda water animal Chagas disease classification dehydration insect vector metabolism Mexico physiology Rhodnius South America species difference transmission Triatoma Animals Chagas Disease Dehydration Insect Vectors Mexico Rhodnius South America Species Specificity Triatoma Water
spellingShingle	Chagas disease vectors Desiccation tolerance Physiological ecology SDM arid environment Chagas disease climate change dehydration desiccation disease vector ecological modeling ecophysiology geographical distribution insect niche niche overlap tolerance vapor pressure Hexapoda water animal Chagas disease classification dehydration insect vector metabolism Mexico physiology Rhodnius South America species difference transmission Triatoma Animals Chagas Disease Dehydration Insect Vectors Mexico Rhodnius South America Species Specificity Triatoma Water de la Vega, G.J. Schilman, P.E. Using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in Chagas disease vectors
topic_facet	Chagas disease vectors Desiccation tolerance Physiological ecology SDM arid environment Chagas disease climate change dehydration desiccation disease vector ecological modeling ecophysiology geographical distribution insect niche niche overlap tolerance vapor pressure Hexapoda water animal Chagas disease classification dehydration insect vector metabolism Mexico physiology Rhodnius South America species difference transmission Triatoma Animals Chagas Disease Dehydration Insect Vectors Mexico Rhodnius South America Species Specificity Triatoma Water
description	Small ectotherms, such as insects, with high surface area-to-volume ratios are usually at risk of dehydration in arid environments. We hypothesize that desiccation tolerance in insects could be reflected in their distribution, which is limited by areas with high relative values of water vapor pressure deficit (VPD) (e.g., hot and dry). The main goal of this study was to explore whether incorporation of eco-physiological traits such as desiccation tolerance in arid environments can improve our understanding of species distribution models (SDM). We use a novel eco-physiological approach to understand the distribution and the potential overlap with their fundamental niche in triatomine bugs, Chagas disease vectors. The desiccation dimension for T. infestans, T. delpontei, T. dimidiata, and T. sordida niches seems to extend to very dry areas. For T. vitticeps, xeric areas seem to limit the geographical range of their realized niche. The maximum VPD limits the western and southern distributions of T. vitticeps, T. delpontei, and T. patagonica. All species showed high tolerance to desiccation with survival times (35 °C-RH ~ 15%) ranging from 24 to 38 days, except for T. dimidiata (9 days), which can be explained by a higher water-loss rate, due to a higher cuticular permeability along with a higher critical water content. This approach indicates that most of these triatomine bugs could be exploiting the dryness dimension of their fundamental niche. Incorporating such species-specific traits in studies of distribution, range, and limits under scenarios of changing climate could enhance predictions of movement of disease-causing vectors into novel regions. © 2017, Springer-Verlag GmbH Germany.
format	JOUR
author	de la Vega, G.J. Schilman, P.E.
author_facet	de la Vega, G.J. Schilman, P.E.
author_sort	de la Vega, G.J.
title	Using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in Chagas disease vectors
title_short	Using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in Chagas disease vectors
title_full	Using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in Chagas disease vectors
title_fullStr	Using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in Chagas disease vectors
title_full_unstemmed	Using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in Chagas disease vectors
title_sort	using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in chagas disease vectors
url	http://hdl.handle.net/20.500.12110/paper_00298549_v185_n4_p607_delaVega
work_keys_str_mv	AT delavegagj usingecophysiologicaltraitstounderstandtherealizednichetheroleofdesiccationtoleranceinchagasdiseasevectors AT schilmanpe usingecophysiologicaltraitstounderstandtherealizednichetheroleofdesiccationtoleranceinchagasdiseasevectors
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Using eco-physiological traits to understand the realized niche: the role of desiccation tolerance in Chagas disease vectors

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