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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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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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 |
_version_ |
1768545537177419776 |