Wing-size heritability in a natural population of Drosophila subobscura

Orengo, Dorcas J.; Prevosti, A.

doi:10.1038/sj.hdy.6884390

Cited by 19 publications

(18 citation statements)

References 29 publications

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“…We cannot, of course, exclude the possibility that part of the variation re¯ects a genetic response to seasonal selection. However, ®eld heritabilities for wing size are very low in D. subobscura (Orengo and Prevosti, 1999), such that any genetic contribution must be minor.…”

Section: Discussionmentioning

confidence: 99%

Size and seasonal temperature in free-ranging Drosophila subobscura

Kari

Huey

2000

Journal of Thermal Biology

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Body size of diverse ectotherms is inversely related to developmental temperature in the laboratory. We monitored seasonal variation in wing length of two populations (Oregon, Washington) of D. subobscura, which was introduced in the Paci®c Northwest in the late 1970s. Wing length varied seasonally and was shortest in summer. In Washington, however, wing length was longest in spring, not winter. Wing length was inversely and curvilinearly related to mean ambient temperature, as in a few previous studies of drosophilids. Mid-winter D. subobscura might not be the largest either because extremely low temperatures depress size or because¯ies collected in winter were in fact born the previous autumn, when developmental temperatures were more moderate. 7

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Section: Discussionmentioning

confidence: 99%

Size and seasonal temperature in free-ranging Drosophila subobscura

Kari

Huey

2000

Journal of Thermal Biology

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“…Therefore, what distinguishes this simple experiment is the low genetic variability between mated and unmated males. Otherwise, heritabilities of traits related to body size have previously been estimated in different Drosophila species to range from 10% to 60%, or even more (Coyne & Beecham, 1987;Mousseau & Roff, 1987;Stanić & Marinković, 1990;Sgro & Hoffmann, 1998;Orengo & Prevosti, 1999). Estimation of heritability, by definition, is only valid for the population and circumstances in which it is examined (Orengo & Prevosti, 1999).…”

Section: Discussionmentioning

confidence: 99%

“…Otherwise, heritabilities of traits related to body size have previously been estimated in different Drosophila species to range from 10% to 60%, or even more (Coyne & Beecham, 1987;Mousseau & Roff, 1987;Stanić & Marinković, 1990;Sgro & Hoffmann, 1998;Orengo & Prevosti, 1999). Estimation of heritability, by definition, is only valid for the population and circumstances in which it is examined (Orengo & Prevosti, 1999). In most studies, heritability estimates for body size-related traits were lower in nature than in the laboratory, largely due to the higher phenotypic variance in nature (Coyne & Beecham, 1987;Prout & Barker, 1989;Sgro & Hoffmann, 1998;Orengo & Prevosti, 1999).…”

Section: Discussionmentioning

confidence: 99%

Developmental temperature, body size and male mating success in fruit flies, Drosophila melanogaster (Diptera: Drosophilidae)

Pavković-Lučić¹,

Kekić²

2013

Eur. J. Entomol.

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Abstract. Body size is one of the most investigated traits in studies of sexual selection in fruit flies of the genus Drosophila. In D. melanogaster, size has often been correlated with male mating success, i.e. larger males were more successful in achieving copulations both in laboratory and field conditions. In the present paper, we investigated if male body size is a sexually selected trait in competitive conditions, when full-sibs that developed at two different temperatures (18 and 25°C) competed for females. Males developed at a lower temperature were significantly larger than those reared at a higher temperature, but they were not more successful in mating. We conclude that when body size is significantly induced by temperature variability, it is not correlated with male mating success.

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“…Bitner-Mathé and Klaczko (1999b) found a very low estimate of the lower bound heritability for SI in a natural population of D. mediopunctata (g 2 h 2 N ¼ 0.05). Also, heritability estimates of size-related traits in natural populations of other Drosophila species are low (Prout and Barker, 1989;Gibert et al, 1998;Orengo and Prevosti, 1999). The most common explanation for these low estimates of size heritability in nature is that the environmental component of phenotypic variation is greater in the field than in the laboratory (Weigensberg and Roff, 1996).…”

Section: Temperature Effects On Heritability Estimatesmentioning

confidence: 99%

Genetic architecture of wing morphology in Drosophila simulans and an analysis of temperature effects on genetic parameter estimates

Matta

Bitner‐Mathé

2004

Heredity

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The Drosophila wing has been used as a model to investigate the mechanisms responsible for size and shape changes in nature, since such changes might underlie morphological evolution. To improve the understanding of wing morphological variation and the interpretation of genetic parameters estimates, we have established 59 lines from a Drosophila simulans laboratory population through single pair random matings. The offspring of each line were reared at three different temperatures, and the wing morphology of 12 individuals was analyzed by adjusting an ellipse to the wings' contour. Temperature, sex and line significantly affected wing trait variation, which was mainly characterized by longer wings having the second, fourth and fifth longitudinal veins closer together at the wing tip. As for the genetic parameter estimates, while the cross-environment heritability of some traits, such as wing size (SI), decreased with an increasing difference between the temperatures at which parents and offspring were reared, wing shape (SH) heritability did not seem to change. Since we found indications that neither an increase in the phenotypic variation nor the occurrence of genotype-environment interactions could fully explain the low heritabilities of SI estimated by cross-environment regressions, we discuss the importance of other effects for explaining this discrepancy between the SI and SH heritability estimates. In addition, although the genetic matrix was not entirely represented in the phenotypic matrix, several correspondences were identified, suggesting that the observed patterns of wing morphology variation are genetically controlled.

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Wing-size heritability in a natural population of Drosophila subobscura

Cited by 19 publications

References 29 publications

Size and seasonal temperature in free-ranging Drosophila subobscura

Size and seasonal temperature in free-ranging Drosophila subobscura

Developmental temperature, body size and male mating success in fruit flies, Drosophila melanogaster (Diptera: Drosophilidae)

Genetic architecture of wing morphology in Drosophila simulans and an analysis of temperature effects on genetic parameter estimates

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