Reproductive Isolation in a Neotropical Insect: Behavior and Microbiology

Somerson, Norman L.; Gottlieb, Frederick Jay

doi:10.1007/978-1-4899-3487-1_10

Cited by 7 publications

(7 citation statements)

References 15 publications

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“…Six strains were used in this study: Lancetilla, Honduras (CA); Georgetown, Guyana (OR); Mesitas, Colombia (AN); Santa Marta, Colombia (TR); Belem, Brazil (AM); and Llanos, Colombia (IN). Further information conceming these strains can be found in Ehrman and Powell (1982) and Ehrman et al (1986). Hereafter, we refer to the strains by their semispecific identifications.…”

Section: Methodsmentioning

confidence: 99%

Developmental isolation and subsequent adult behavior ofDrosophila paulistorum. II. Prior experience

1996

Behav Genet

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Preadult seclusion imposed upon members of the Drosophila paulistorum complex of intersterile semispecies significantly decreased sexual isolation between adults of the semispecies. While seclusion at any developmental stage had this effect, there were quantitative variations correlated with the stage at which seclusion had been initiated: the earlier the stage at which seclusion began, the more frequent were the heterogamic matings. All the stages of development seemed to contribute to final adult sexual behavior, with no single stage emerging as the most important experiential phase. Seclusion also significantly affected intrasemispecific matings, in that flies were more likely to mate with partners having similar experiences.

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Section: Methodsmentioning

confidence: 99%

Developmental isolation and subsequent adult behavior ofDrosophila paulistorum. II. Prior experience

1996

Behav Genet

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“…Six allopatric strains were used in this study: Belem, Brazil (AM); Mesitas, Colombia (AN); Lancetilla, Honduras (CA); Llanos, Colombia (IN), Georgetown, Guyana (OR); and Santa Marta, Colombia (TR). For more information, see Ehrman and Powell (1982) and Ehrman et al (1986). Hereafter, we refer to the strains by their semispecific identifications.…”

Section: Methodsmentioning

confidence: 99%

Developmental isolation and subsequent adult behavior ofDrosophila paulistorum. III. Alternative rearing

Kim

Koepfer

1996

Behav Genet

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We have been utilizing members of the Drosophila paulistorum complex of semispecies to study the development of adult discriminatory behavior. In this study, three rearing methods were used to examine the effects of previous exposure to heterosemispecifics on reproductive isolation among the various semispecies. Experimental flies were exposed to heterosemispecifics by one of three methods: exposure to airborne heterosemispecific stimuli from egg through sexual maturity, physical contact with heterosemispecifics only during the postimaginal period, and mixed culturing (total physical contact with heterosemispecific individuals during each of five preimaginal stages). Effects of the first treatment varied with semispecies. The second treatment had no significant effect on mating behavior. The third treatment of mixed culturing reinforced sexual isolation.

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“…Furthermore, to repeat previous experiments (Ehrman et al 1987) using D. pavlovskiana, which had not been used previously for this purpose, we prepared a suspension of D. pavlovskiana males and injected it into the Mesitas strain of the Andean semispecies and into the Santa Marta strain of the Transitional semispecies. (The injection techniques used in this study are described in Ehrman and Kernaghan 1972 andFactor et al 1990.…”

Section: Crossesmentioning

confidence: 99%

“…They are the intracellular cytoplasmic bearers of an L-form (cellwall-deficient) microorganism belonging to the genus Streptococcus. (For full histories of the D. paulistorum semispecies, see Ehrman and Powell 1982;Ehrman et al 1987. For the bacteriology of the streptococcal L-form, see Somerson et al 1984b.)…”

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confidence: 99%

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The Drosophila paulistorum Endosymbiont in an Alternative Species

Factor¹,

Somerson²,

Manzo³

1989

The American Naturalist

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The Drosophila paulistorum species complex consists of six known apparently separate semispecies: Amazonian, Andean, Centroamerican, Interior, Orinocan, and Transitional. They are the intracellular cytoplasmic bearers of an L-form (cellwall-deficient) microorganism belonging to the genus Streptococcus. (For full histories of the D. paulistorum semispecies, see Ehrman and Powell 1982;Ehrman et al. 1987. For the bacteriology of the streptococcal L-form, see Somerson et al. 1984b.) Drosophila pavlovskiana, in contrast, is a Neotropical endemic (its history is described in Ehrman and Powell 1982, table C, pp. 195, 197). It is also a sibling species of D. paulistorum and crossable with it, albeit with difficulty because of sexual isolation. Furthermore, the F1 hybrid sons are sterile, a common occurrence when semispecies or sibling species of these drosophilids are crossed and succeed in producing progeny.

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Reproductive Isolation in a Neotropical Insect: Behavior and Microbiology

Cited by 7 publications

References 15 publications

Developmental isolation and subsequent adult behavior ofDrosophila paulistorum. II. Prior experience

Developmental isolation and subsequent adult behavior ofDrosophila paulistorum. II. Prior experience

Developmental isolation and subsequent adult behavior ofDrosophila paulistorum. III. Alternative rearing

The Drosophila paulistorum Endosymbiont in an Alternative Species

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