Some evidence of incipient speciation in <i>Drosophila kikkawai</i>

Gupta, Jancy; Sundaran, A. K.

doi:10.1139/g94-148

Cited by 6 publications

(4 citation statements)

References 12 publications

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“…However, most of the studies showing this pattern used a ''no-choice'' mating design: females were paired with heterospecific males individually, and scored for whether they mated. Several studies have shown that choice mating experiments, where females may select between conspecific or heterospecific males, may yield different results from no-choice experiments (e.g., Gupta and Sundaran, 1994;Ryan and Rand, 1993;Wade et al, 1995), and some argue that choice experiments more accurately reflect the natural setting (e.g., Spieth and Ringo, 1983).…”

Section: Introductionmentioning

confidence: 99%

Simulating Natural Conditions in the Laboratory: A Re-Examination of Sexual Isolation between Sympatric and Allopatric Populations of Drosophila pseudoobscura and D. persimilis

Noor

Ortiz‐Barrientos

2006

Behav Genet

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Simulating natural conditions in the laboratory poses one of the most significant challenges to behavioral studies. Some authors have argued that laboratory "choice" experiments reflect mate choice in nature more accurately than "no-choice" experiments. A recent choice experiment study questioned the conclusions of several earlier studies by failing to detect a published difference in sexual isolation between populations of Drosophila pseudoobscura, and suggested their result was more robust because of the more realistic design. Here, we re-examine the methods and analyses of this recent study, and we find there was indeed a difference in sexual isolation between populations of D. pseudoobscura. We also conduct a more rigorously controlled choice experiment and, in agreement with previous studies, note that D. pseudoobscura females from populations sympatric to their sibling species, D. persimilis, exhibit greater sexual isolation than those from allopatric populations. Our results confirm the existence of a geographic pattern in sexual isolation in D. pseudoobscura, and we discuss differences in experimental designs in light of the biology of this species.

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Section: Introductionmentioning

confidence: 99%

Simulating Natural Conditions in the Laboratory: A Re-Examination of Sexual Isolation between Sympatric and Allopatric Populations of Drosophila pseudoobscura and D. persimilis

Noor

Ortiz‐Barrientos

2006

Behav Genet

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“…Several studies have already shown that choice and no-choice mating experiments may yield diverging results (e.g. Ryan & Rand 1993;Gupta & Sundaran 1994;Wade et al 1995;Coyne et al 2005). The respective advantages and disadvantages of choice versus no-choice mating experiments are still a matter of debate (see Casares et al 2005;Noor & Ortiz-Barrientos 2006).…”

Section: Discussion Male Ability To Use Pheromones To Discriminate Pomentioning

confidence: 99%

Is mate choice in Drosophila males guided by olfactory or gustatory pheromones?

2010

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Drosophila melanogaster flies use both olfactory and taste systems to detect sex pheromones and select the most suitable mate for reproduction. In nature, flies often face multiple potential partners and should have an acute sensory ability to discriminate between different pheromonal bouquets. We investigated both the pheromones and the chemosensory neurons influencing Drosophila mate choice. We measured various courtship traits in single tester males simultaneously presented with two target male and/or female flies carrying different pheromonal bouquets (pairs of control flies of the same or different sex, same-sex target pairs of pheromonal variant strains). The courtship traits reflected the perception of either olfactory cues perceived before or gustatory cues perceived after the first physical taste contact. Our results suggest that male mate choice exists in D. melanogaster and that male discrimination between potential mates could be a two-step process involving chemical cues perceived before and after the first gustatory contact. In addition, when a male was simultaneously presented with two potential sexual partners, the olfactory and gustatory cues he used depended on the pheromonal patterns of both flies, but his response could also depend on additional effects resulting from the simultaneous perception of the two flies, leading to a nonlinear choice of a sexual partner. Moreover, some tester males with genetically altered gustatory receptor neurons strongly changed their partner preference, indicating that the fly's peripheral nervous system is essential for pheromonal detection and mate choice

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“…It is well known that there are cryptic species in many taxonomic groups, which is indistinguishable to each other at the morphological level, but can be identified at the genetic level [9][10][11][12][13]24]. Drosophila lacertosa populations have various degrees of karyotypic differentiation.…”

Section: Karyotype Differentiation In Drosophila Lacertosamentioning

confidence: 99%

“…Karyotype variation has been found not only among closely related species but also within one species [2][3][4][5][6][7][8]. Thus, cryptic and sibling species, or incipient speciation, has been frequently detected first at the cytological level for some insect species [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Karyotype differentiation and reproductive isolation among natural populations of Drosophila lacertosa

Watabe

Zhang

et al. 2003

Cell Res

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Drosophila lacertosa is widely distributed from northern India to Far East of Russia throughout China. We have studied geographical distributions of three kinds of chromosomal karyotypes, type D (2n=10, 4 pairs of V-shaped metacentric chromosomes and a pair of micro-chromosomes), type L (2n=10, 5V with a pair of large-sized heterochromatic autosomes) and type M (2n=10, 5V with middle-sized ones). Type D was found exclusively in local populations of D. lacertosa distributed in Yun-Gui Plateau, southwestern China. Both type L and M have a wide range of distribution, and the former occurred in subtropical regions of China including Taiwan Island, whereas the latter in cool temperate regions of East Asia covering Far East of Russia, Korea and the Japan Islands. A strong premating isolation was detected between flies with type D and those with type L or M. These data demonstrate that genetic differentiation leading to cryptic speciation might have occurred in natural populations of Drosophila lacertosa.

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Some evidence of incipient speciation in Drosophila kikkawai

Cited by 6 publications

References 12 publications

Simulating Natural Conditions in the Laboratory: A Re-Examination of Sexual Isolation between Sympatric and Allopatric Populations of Drosophila pseudoobscura and D. persimilis

Simulating Natural Conditions in the Laboratory: A Re-Examination of Sexual Isolation between Sympatric and Allopatric Populations of Drosophila pseudoobscura and D. persimilis

Is mate choice in Drosophila males guided by olfactory or gustatory pheromones?

Karyotype differentiation and reproductive isolation among natural populations of Drosophila lacertosa

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