Cargando…

The effect of fasting and body reserves on cold tolerance in 2 pit-building insect predators

Pit-building antlions and wormlions are 2 distantly-related insect species, whose larvae construct pits in loose soil to trap small arthropod prey. This convergent evolution of natural histories has led to additional similarities in their natural history and ecology, and thus, these 2 species encoun...

Descripción completa

Detalles Bibliográficos
Autores principales: Scharf, Inon, Daniel, Alma, MacMillan, Heath Andrew, Katz, Noa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5804172/
https://www.ncbi.nlm.nih.gov/pubmed/29491987
http://dx.doi.org/10.1093/cz/zow049
_version_ 1783298789180702720
author Scharf, Inon
Daniel, Alma
MacMillan, Heath Andrew
Katz, Noa
author_facet Scharf, Inon
Daniel, Alma
MacMillan, Heath Andrew
Katz, Noa
author_sort Scharf, Inon
collection PubMed
description Pit-building antlions and wormlions are 2 distantly-related insect species, whose larvae construct pits in loose soil to trap small arthropod prey. This convergent evolution of natural histories has led to additional similarities in their natural history and ecology, and thus, these 2 species encounter similar abiotic stress (such as periodic starvation) in their natural habitat. Here, we measured the cold tolerance of the 2 species and examined whether recent feeding or food deprivation, as well as body composition (body mass and lipid content) and condition (quantified as mass-to-size residuals) affect their cold tolerance. In contrast to other insects, in which food deprivation either enhanced or impaired cold tolerance, prolonged fasting had no effect on the cold tolerance of either species, which had similar cold tolerance. The 2 species differed, however, in how cold tolerance related to body mass and lipid content: although body mass was positively correlated with the wormlion cold tolerance, lipid content was a more reliable predictor of cold tolerance in the antlions. Cold tolerance also underwent greater change with ontogeny in wormlions than in antlions. We discuss possible reasons for this lack of effect of food deprivation on both species’ cold tolerance, such as their high starvation tolerance (being sit-and-wait predators).
format Online
Article
Text
id pubmed-5804172
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher Oxford University Press
record_format MEDLINE/PubMed
spelling pubmed-58041722018-02-28 The effect of fasting and body reserves on cold tolerance in 2 pit-building insect predators Scharf, Inon Daniel, Alma MacMillan, Heath Andrew Katz, Noa Curr Zool Articles Pit-building antlions and wormlions are 2 distantly-related insect species, whose larvae construct pits in loose soil to trap small arthropod prey. This convergent evolution of natural histories has led to additional similarities in their natural history and ecology, and thus, these 2 species encounter similar abiotic stress (such as periodic starvation) in their natural habitat. Here, we measured the cold tolerance of the 2 species and examined whether recent feeding or food deprivation, as well as body composition (body mass and lipid content) and condition (quantified as mass-to-size residuals) affect their cold tolerance. In contrast to other insects, in which food deprivation either enhanced or impaired cold tolerance, prolonged fasting had no effect on the cold tolerance of either species, which had similar cold tolerance. The 2 species differed, however, in how cold tolerance related to body mass and lipid content: although body mass was positively correlated with the wormlion cold tolerance, lipid content was a more reliable predictor of cold tolerance in the antlions. Cold tolerance also underwent greater change with ontogeny in wormlions than in antlions. We discuss possible reasons for this lack of effect of food deprivation on both species’ cold tolerance, such as their high starvation tolerance (being sit-and-wait predators). Oxford University Press 2017-06 2016-05-09 /pmc/articles/PMC5804172/ /pubmed/29491987 http://dx.doi.org/10.1093/cz/zow049 Text en © The Author (2016). Published by Oxford University Press. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
spellingShingle Articles
Scharf, Inon
Daniel, Alma
MacMillan, Heath Andrew
Katz, Noa
The effect of fasting and body reserves on cold tolerance in 2 pit-building insect predators
title The effect of fasting and body reserves on cold tolerance in 2 pit-building insect predators
title_full The effect of fasting and body reserves on cold tolerance in 2 pit-building insect predators
title_fullStr The effect of fasting and body reserves on cold tolerance in 2 pit-building insect predators
title_full_unstemmed The effect of fasting and body reserves on cold tolerance in 2 pit-building insect predators
title_short The effect of fasting and body reserves on cold tolerance in 2 pit-building insect predators
title_sort effect of fasting and body reserves on cold tolerance in 2 pit-building insect predators
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5804172/
https://www.ncbi.nlm.nih.gov/pubmed/29491987
http://dx.doi.org/10.1093/cz/zow049
work_keys_str_mv AT scharfinon theeffectoffastingandbodyreservesoncoldtolerancein2pitbuildinginsectpredators
AT danielalma theeffectoffastingandbodyreservesoncoldtolerancein2pitbuildinginsectpredators
AT macmillanheathandrew theeffectoffastingandbodyreservesoncoldtolerancein2pitbuildinginsectpredators
AT katznoa theeffectoffastingandbodyreservesoncoldtolerancein2pitbuildinginsectpredators
AT scharfinon effectoffastingandbodyreservesoncoldtolerancein2pitbuildinginsectpredators
AT danielalma effectoffastingandbodyreservesoncoldtolerancein2pitbuildinginsectpredators
AT macmillanheathandrew effectoffastingandbodyreservesoncoldtolerancein2pitbuildinginsectpredators
AT katznoa effectoffastingandbodyreservesoncoldtolerancein2pitbuildinginsectpredators