Variation in abdomen pigmentation in Drosophila melanogaster females

Robertson, Alan; Briscoe, David A.; Louw, J. H.

doi:10.1007/bf00122443

Cited by 24 publications

(21 citation statements)

References 3 publications

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“…During a comparison of temperate and tropical populations for genetical traits like allozyme frequencies, morphology or physiology (DAVID & B OCQUET , 1975 ;DAVID et al, 1977 ;DAVID, 1982 ;C A rY et al, 1983) it was noticed that populations in the tropics are generally lighter than those living in France. This observation seemed particularly interesting since latitudinal variations in pigmentation occur in many animal species and because the adaptative significance of pigmentation has been repeatedly disccussed in the context of G LOCER 's rule (R EN S CH , 1960 ;MA YR , 1963 ;DOBZHANS KY , 1970 ;M ERREL , 1981 (R OBERTSON et al, 1977). We have shown here that variations in trident pigmentation between samples of flies can be described in a reproducible way due to the establishment of phenotypic classes.…”

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confidence: 59%

Thoracic trident pigmentation in Drosophila melanogaster : Differentiation of geographical populations

DAVID¹,

CAPY²,

PAYANT³

et al. 1985

Genet. Sel. Evol.

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confidence: 59%

Thoracic trident pigmentation in Drosophila melanogaster : Differentiation of geographical populations

DAVID¹,

CAPY²,

PAYANT³

et al. 1985

Genet. Sel. Evol.

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“…First, increased melanization might reflect a non-adaptive linkage with other genes that are adaptive at low temperature. In fact, some alleles affecting abdominal pigmentation in D. melanogaster also affect sternopleural bristle number (Robertson et al 1977). Second, because melanin influences cuticular strength (Roseland et al 1987), more melanized cuticles at low temperature might promote structural rigidity and thus help compensate for larger body size.…”

Section: Discussionmentioning

confidence: 99%

WITHIN‐ AND BETWEEN‐GENERATION EFFECTS OF TEMPERATURE ON THE MORPHOLOGY AND PHYSIOLOGY OF DROSOPHILA MELANOGASTER

1996

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Abstract,-We investigated the effects of developmental and parental temperatures on several physiological and morphological traits of adult Drosophila melanogaster. Flies for the parental generation were raised at either low or moderate temperature (18°C or 25°C) and then mated in the four possible sex-by-parental temperature crosses. Their offspring were raised at either 18°C or 25°C and then scored as adults for morphological (dry body mass, wing size, and abdominal melanization [females only]), physiological (knock-down temperature, and thermal dependence of walking speed), and life history (egg size) traits. The experiment was replicated, and the factorial design allows us to determine whether and how paternal, maternal, and developmental temperatures (as well as offspring sex) influence the various traits. Sex and developmental temperature had major effects on all traits. Females had larger bodies and wings, higher knock-down temperatures, and slower speeds (but similar shaped performance curves) than males, Development at 2YC (versus at 18°C) increased knock-down temperature, increased maximal speed and thermal performance breadth, decreased the optimal temperature for walking, decreased body mass and wing size, reduced abdominal melanization, and reduced egg size. Parental temperatures influenced a few traits, but the effects were generally small relative to those of sex or developmental temperature. Flies whose mother had been raised at 25°C (versus at 18°C) had slightly higher knock-down temperature and smaller body mass. Flies whose father had been raised at 25°C had relatively longer wings. The effects of paternal, maternal, and developmental temperatures sometimes differed in direction. The existence of significant within-and between-generation effects suggests that comparative studies need to standardize thermal environments for at least two generations, that attempts to estimate "field" heritabilities may be unreliable for some traits, and that predictions of short-term evolutionary responses to selection will be difficult. The magnitude and nature of nongenetic effects on an organism's phenotype (phenotypic plasticity, norms of reaction, acclimation) have recently received considerable attention. Such nongenetic effects are relevant not only to functional biologists studying how organisms work (Somero 1995), but also to evolutionary biologists studying the dynamics of phenotypic evolution (Kirkpatrick and Lande 1989;Stearns 1989). The magnitude of phenotypic plasticity is genetically variable and can respond to selection (Gebhardt and Stearns 1988; Scheiner and Lyman 1991). However, marked phenotypic plasticity complicates attempts to predict responses to selection (Via and Lande 1985;Kirkpatrick and Lande 1989).Most studies of phenotypic plasticity have focused on the phenotypic effects of environmental factors within an individual's lifetime. For example, many studies report on the consequences of developmental regimes (temperature, food regime, or crowding) on adult size, life span, physiologic...

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“…These sources of variation include genetic changes at the bab locus, a locus originally discovered to be an important regulator of abdominal pigmentation differences between sexes in D. melanogaster (Robertson et al 1977). Null mutations in bab cause the development of a male-like pigmentation pattern in the A5 and A6 abdominal segments of female D. melanogaster , suggesting that bab acts to repress male-specific abdominal pigmentation in females (Kopp et al 2000).…”

Section: Abdominal Pigmentationmentioning

confidence: 99%

The Genetic Basis of Pigmentation Differences Within and Between Drosophila Species

Massey

Wittkopp

2016

Current Topics in Developmental Biology

108

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In Drosophila, as well as in many other plants and animals, pigmentation is highly variable both within and between species. This variability, combined with powerful genetic and transgenic tools as well as knowledge of how pigment patterns are formed biochemically and developmentally, have made Drosophila pigmentation a premier system for investigating the genetic and molecular mechanisms responsible for phenotypic evolution. In this chapter, we review and synthesize findings from a rapidly growing body of case studies examining the genetic basis of pigmentation differences in the abdomen, thorax, wings, and pupal cases within and between Drosophila species. A core set of genes, including genes required for pigment synthesis (e.g., yellow, ebony, tan, Dat) as well as developmental regulators of these genes (e.g., bab1, bab2, omb, Dll, and wg) emerge as the primary sources of this variation, with most genes having been shown to contribute to pigmentation differences both within and between species. In cases where specific genetic changes contributing to pigmentation divergence were identified in these genes, the changes were always located in noncoding sequences and affected cis-regulatory activity. We conclude this chapter by discussing these and other lessons learned from evolutionary genetic studies of Drosophila pigmentation and identify topics we think should be the focus of future work with this model system.

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Variation in abdomen pigmentation in Drosophila melanogaster females

Abstract: A locus affecting abdomen pigmentation of Drosophila melanogaster females is shown to have a large number of alleles in wild populations. Some of these also affect sternopleural bristle count.

Cited by 24 publications

References 3 publications

Thoracic trident pigmentation in Drosophila melanogaster : Differentiation of geographical populations

Thoracic trident pigmentation in Drosophila melanogaster : Differentiation of geographical populations

WITHIN‐ AND BETWEEN‐GENERATION EFFECTS OF TEMPERATURE ON THE MORPHOLOGY AND PHYSIOLOGY OF DROSOPHILA MELANOGASTER

The Genetic Basis of Pigmentation Differences Within and Between Drosophila Species

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