Developmental time, body size and wing loading in Drosophila buzzatii from lowland and highland populations in Argentina

Genotype-by-temperature interaction is a necessary condition for adaptive evolution of fitness traits as a response to temperature. Several fitness-related traits (developmental time, pre-adult survival, thorax and wing lengths, and wing loading) were measured in laboratory-reared D. buzzatii from f...

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Autor principal: Norry, Fabian Marcelo
Publicado: 2002
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Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v135_n1_p35_Norry
http://hdl.handle.net/20.500.12110/paper_00180661_v135_n1_p35_Norry
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spelling paper:paper_00180661_v135_n1_p35_Norry2023-06-08T14:39:16Z Developmental time, body size and wing loading in Drosophila buzzatii from lowland and highland populations in Argentina Norry, Fabian Marcelo altitude analysis of variance animal experiment Argentina article body size comparative study controlled atmosphere controlled study Drosophila ecology environmental exposure environmental temperature evolutionary adaptation female fitness flight genetic trait genotype environment interaction high temperature insect development insect genetics laboratory nonhuman seasonal variation survival Altitude Animals Argentina Body Constitution Climate Drosophila Temperature Time Factors Wing Animalia Drosophila buzzatii Insecta Invertebrata Genotype-by-temperature interaction is a necessary condition for adaptive evolution of fitness traits as a response to temperature. Several fitness-related traits (developmental time, pre-adult survival, thorax and wing lengths, and wing loading) were measured in laboratory-reared D. buzzatii from four populations sampled at different altitudes in north-western Argentina: a lowland population (407 m a.s.l.), two populations from intermediate altitude (780 to 950 m a.s.l.), and a highland population (2380 m a.s.l.). Temperature is the main climatic difference between the collection sites: lowland but not highland populations are exposed to physiologically high temperature during both spring and summer in nature. Three growth temperatures (20, 25 and 30°C) were used to test for population-by-temperature interactions. Both developmental time and pre-adult survival exhibit highly significant population-by-temperature interaction. Pre-adult survival at 30°C is significantly higher in lowland than in highland populations, but not so at lower growth temperatures (20 and 25°C). Both wing length and wing loading show no population-by-temperature interaction, indicating that these traits are not the direct targets of thermal adaptation in nature. Wing loading is higher in highland than in lowland populations, suggesting that flight performance is subject to stronger selection in the highland population. This hypothesis is consistent with ecological observations in both types of populations. There is no obvious among-population relationship between developmental time and body size, even though both traits are related within populations in a well-known trade-off. Overall, thermal adaptation is evident for developmental time and pre-adult survival but not for size-related traits. Fil:Norry, F.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v135_n1_p35_Norry http://hdl.handle.net/20.500.12110/paper_00180661_v135_n1_p35_Norry
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic altitude
analysis of variance
animal experiment
Argentina
article
body size
comparative study
controlled atmosphere
controlled study
Drosophila
ecology
environmental exposure
environmental temperature
evolutionary adaptation
female
fitness
flight
genetic trait
genotype environment interaction
high temperature
insect development
insect genetics
laboratory
nonhuman
seasonal variation
survival
Altitude
Animals
Argentina
Body Constitution
Climate
Drosophila
Temperature
Time Factors
Wing
Animalia
Drosophila buzzatii
Insecta
Invertebrata
spellingShingle altitude
analysis of variance
animal experiment
Argentina
article
body size
comparative study
controlled atmosphere
controlled study
Drosophila
ecology
environmental exposure
environmental temperature
evolutionary adaptation
female
fitness
flight
genetic trait
genotype environment interaction
high temperature
insect development
insect genetics
laboratory
nonhuman
seasonal variation
survival
Altitude
Animals
Argentina
Body Constitution
Climate
Drosophila
Temperature
Time Factors
Wing
Animalia
Drosophila buzzatii
Insecta
Invertebrata
Norry, Fabian Marcelo
Developmental time, body size and wing loading in Drosophila buzzatii from lowland and highland populations in Argentina
topic_facet altitude
analysis of variance
animal experiment
Argentina
article
body size
comparative study
controlled atmosphere
controlled study
Drosophila
ecology
environmental exposure
environmental temperature
evolutionary adaptation
female
fitness
flight
genetic trait
genotype environment interaction
high temperature
insect development
insect genetics
laboratory
nonhuman
seasonal variation
survival
Altitude
Animals
Argentina
Body Constitution
Climate
Drosophila
Temperature
Time Factors
Wing
Animalia
Drosophila buzzatii
Insecta
Invertebrata
description Genotype-by-temperature interaction is a necessary condition for adaptive evolution of fitness traits as a response to temperature. Several fitness-related traits (developmental time, pre-adult survival, thorax and wing lengths, and wing loading) were measured in laboratory-reared D. buzzatii from four populations sampled at different altitudes in north-western Argentina: a lowland population (407 m a.s.l.), two populations from intermediate altitude (780 to 950 m a.s.l.), and a highland population (2380 m a.s.l.). Temperature is the main climatic difference between the collection sites: lowland but not highland populations are exposed to physiologically high temperature during both spring and summer in nature. Three growth temperatures (20, 25 and 30°C) were used to test for population-by-temperature interactions. Both developmental time and pre-adult survival exhibit highly significant population-by-temperature interaction. Pre-adult survival at 30°C is significantly higher in lowland than in highland populations, but not so at lower growth temperatures (20 and 25°C). Both wing length and wing loading show no population-by-temperature interaction, indicating that these traits are not the direct targets of thermal adaptation in nature. Wing loading is higher in highland than in lowland populations, suggesting that flight performance is subject to stronger selection in the highland population. This hypothesis is consistent with ecological observations in both types of populations. There is no obvious among-population relationship between developmental time and body size, even though both traits are related within populations in a well-known trade-off. Overall, thermal adaptation is evident for developmental time and pre-adult survival but not for size-related traits.
author Norry, Fabian Marcelo
author_facet Norry, Fabian Marcelo
author_sort Norry, Fabian Marcelo
title Developmental time, body size and wing loading in Drosophila buzzatii from lowland and highland populations in Argentina
title_short Developmental time, body size and wing loading in Drosophila buzzatii from lowland and highland populations in Argentina
title_full Developmental time, body size and wing loading in Drosophila buzzatii from lowland and highland populations in Argentina
title_fullStr Developmental time, body size and wing loading in Drosophila buzzatii from lowland and highland populations in Argentina
title_full_unstemmed Developmental time, body size and wing loading in Drosophila buzzatii from lowland and highland populations in Argentina
title_sort developmental time, body size and wing loading in drosophila buzzatii from lowland and highland populations in argentina
publishDate 2002
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v135_n1_p35_Norry
http://hdl.handle.net/20.500.12110/paper_00180661_v135_n1_p35_Norry
work_keys_str_mv AT norryfabianmarcelo developmentaltimebodysizeandwingloadingindrosophilabuzzatiifromlowlandandhighlandpopulationsinargentina
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