The bipectinata Complex: A Study in Interspecific Hybridization in the Genus Drosophila (Insecta: Diptera)

Bock, I. R.

doi:10.1071/bi9780197

Cited by 42 publications

(40 citation statements)

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“…These features make the D. bipectinata species complex an interesting model system for evolutionary studies with particular reference to speciation. In the interspecific hybrids, F 1 females are fertile while males are sterile (Bock, 1978;Mishra and Singh, 2006). Investigation on genetic basis of hybrid male sterility among D. bipectinata, D. parabipectinata and D. malerkotliana revealed that there is no role of MHS genes and cytoplasmic factors in sterility of hybrid males (Mishra and Singh, 2005b (Mishra and Singh, 2005b).…”

Section: Introductionmentioning

confidence: 99%

“…The Drosophila bipectinata complex consists of four closely related species -D. bipectinata Duda 1923, D. parabipectinata Bock 1971, D. malerkotliana Parshad and Paika 1964, and D. pseudoananassae Bock 1971, where females are indistinguishable and males can be differentiated by their sex comb pattern and abdominal tip pigmentation (Bock, 1971(Bock, ,1978Bock and Wheeler, 1972;Singh and Singh, 2001;Mishra and Singh, 2005b;Kopp and Barmina, 2005;Tomimura et al, 2005 (Bock, 1971;Okada, 1981;Singh and Singh, 2001). Recently, two subspecies (Asian and Pacific) of D. bipectinata have been reported, which show partial reproductive isolation (Kopp and Frank, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Genetic interactions underlying hybrid male sterility in the Drosophila bipectinata species complex

Mishra

Singh

2006

Genes Genet. Syst.

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Understanding genetic mechanisms underlying hybrid male sterility is one of the most challenging problems in evolutionary biology especially speciation. By using the interspecific hybridization method roles of Y chromosome, Major Hybrid Sterility (MHS) genes and cytoplasm in sterility of hybrid males have been investigated in a promising group, the Drosophila bipectinata species complex that consists of four closely related species: D. pseudoananassae, D. bipectinata, D. parabipectinata and D. malerkotliana . The interspecific introgression analyses show that neither cytoplasm nor MHS genes are involved but X-Y interactions may be playing major role in hybrid male sterility between D. pseudoananassae and the other three species. The results of interspecific introgression analyses also show considerable decrease in the number of males in the backcross offspring and all males have atrophied testes. There is a significant positive correlation between sex -ratio distortion and severity of sterility in backcross males. These findings provide evidence that D. pseudoananassae is remotely related with other three species of the D. bipectinata species complex.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic interactions underlying hybrid male sterility in the Drosophila bipectinata species complex

Mishra

Singh

2006

Genes Genet. Syst.

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“…D. bipectinata is a member of the ananasssae subgroup of the melanogaster species group [32], and is widely distributed in the Australian and Oriental biogeographic zones [32]. The trait under study is the male sex comb, a heritable and condition dependent secondary sexual trait [33][34][35][36] undergoing incipient diversification throughout its geographic range [35,37,38].…”

Section: Introductionmentioning

confidence: 99%

Consistent Positive Co-Variation between Fluctuating Asymmetry and Sexual Trait Size: A Challenge to the Developmental Instability-Sexual Selection Hypothesis

2015

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Abstract:The developmental instability (DI)-sexual selection hypothesis proposes that large size and symmetry in secondary sexual traits are favored by sexual selection because they reveal genetic quality. A critical prediction of this hypothesis is that there should exist negative correlations between trait fluctuating asymmetry (FA) and size of condition dependent sexual traits; condition dependent traits should reveal an organism's overall health and vigor, and be influenced by a multitude of genetic loci. Here, we tested for the predicted negative FA-size correlations in the male sex comb of Drosophila bipectinata. Among field-caught males from five widely separated geographic localities, FA-size correlations were consistently positive, despite evidence that sex comb size is condition dependent. After controlling for trait size, FA was significantly negatively correlated with body size within several populations, indicating that developmental instability in the comb may reveal individual genetic quality. We suggest the possibility that condition dependent traits in some cases tap into independent units of the genome (a restricted set of genes), rather than signaling overall genetic properties of the organism. There were pronounced among-population differences in both comb FA and size, and these traits were positively correlated across populations, recapitulating the within-population patterns. We conclude that the results are inconsistent with the DI-sexual selection hypothesis, and discuss potential reasons for positive FA-size co-variation in sexual traits. OPEN ACCESSSymmetry 2015, 7 977

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“…D. bipectinata and D. parabipectinata branch deeply within the ananassae subgroup, while all basal lineages have transverse sex combs. Phylogenetic analysis strongly suggests that the common ancestor of these species has re-evolved a rotating sex comb following a previous loss at the base of the ananassae subgroup ( D. bipectinata can be hybridized with its close relative D. malerkotliana (Bock 1978;Kopp and Barmina 2005), which has simple transverse sex combs, opening the way for a direct genetic analysis of sex comb re-evolution. We used a QTL mapping approach to identify the genomic regions responsible for the differences in sex comb morphology between D. bipectinata and D. malerkotliana.…”

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confidence: 99%

“…bipectinata can be hybridized with its close relative D. malerkotliana (Bock 1978;Kopp and Barmina 2005), which has simple transverse sex combs, opening the way for a direct genetic analysis of sex comb re-evolution. We used a QTL mapping approach to identify the genomic regions responsible for the differences in sex comb morphology between D. bipectinata and D. malerkotliana.…”

mentioning

confidence: 99%

Genetic Basis of a Violation of Dollo’s Law: Re-Evolution of Rotating Sex Combs inDrosophila bipectinata

Seher

Ng²,

Signor

et al. 2012

Genetics

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Phylogenetic analyses suggest that violations of "Dollo's law"-that is, re-evolution of lost complex structures-do occur, albeit infrequently. However, the genetic basis of such reversals has not been examined. Here, we address this question using the Drosophila sex comb, a recently evolved, male-specific morphological structure composed of modified bristles. In some species, sex comb development involves only the modification of individual bristles, while other species have more complex "rotated" sex combs that are shaped by coordinated migration of epithelial tissues. Rotated sex combs were lost in the ananassae species subgroup and subsequently re-evolved, 12 million years later, in Drosophila bipectinata and its sibling species. We examine the genetic basis of the differences in sex comb morphology between D. bipectinata and D. malerkotliana, a closely related species with a much simpler sex comb representing the ancestral condition. QTL mapping reveals that .50% of this difference is controlled by one chromosomal inversion that covers 5% of the genome. Several other, larger inversions do not contribute appreciably to the phenotype. This genetic architecture suggests that rotating sex combs may have re-evolved through changes in relatively few genes. We discuss potential developmental mechanisms that may allow lost complex structures to be regained. DOLLO'S "law of irreversibility" posits that complex morphological structures, once lost during evolution, cannot be regained in the same form. This principle makes intuitive sense: resurrecting an extinct developmental pathway in close to its ancestral condition seems biologically as well as statistically implausible. And yet, phylogenetic analyses have revealed several cases where Dollo's law is apparently violated. Examples include re-evolution of lost digits in lizards (Kohlsdorf and Wagner 2006;Brandley et al. 2008;Kohlsdorf et al. 2010), eggshells and oviparity in boas (Lynch and Wagner 2010), wings in stick insects (Whiting et al. 2003), shell coiling in limpets (Collin and Cipriani 2003), mandibular teeth in frogs (Wiens 2011), molars in lynx (Kurten 1963), and others. There is a growing consensus that lost structures can sometimes be regained, especially if that happens soon after the initial loss (Wiens 2011) (but see Goldberg andIgic 2008 and Galis et al. 2010 for counterarguments). This shifts the question from the realm of phylogenies to developmental genetics: how can complex structures re-evolve? What is the genetic basis of such reversals?In this report, we examine the genetic basis of a likely violation of Dollo's law that occurred during the evolution of Drosophila sex combs. Sex combs are male-specific arrays of modified mechanosensory bristles ("teeth") that evolved within the genus Drosophila and are used by males during courtship and mating (Kopp 2011). These structures develop from either transverse or longitudinal bristle rows that are present on the front legs of both sexes and show extensive morphological diversity but essenti...

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The bipectinata Complex: A Study in Interspecific Hybridization in the Genus Drosophila (Insecta: Diptera)

Cited by 42 publications

References 7 publications

Genetic interactions underlying hybrid male sterility in the Drosophila bipectinata species complex

Genetic interactions underlying hybrid male sterility in the Drosophila bipectinata species complex

Consistent Positive Co-Variation between Fluctuating Asymmetry and Sexual Trait Size: A Challenge to the Developmental Instability-Sexual Selection Hypothesis

Genetic Basis of a Violation of Dollo’s Law: Re-Evolution of Rotating Sex Combs inDrosophila bipectinata

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