On Marta Breuer and some of her unpublished drawings of Drosophila spp. male terminalia (Diptera, Drosophilidae)

Vilela, Carlos Ribeiro; Cunha, A. Brito da

doi:10.1590/s1415-47572006000300032

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…arising from dark spots" (vilela & cunHa, 2006). The first of these traits is inconsistent with our observations but there is a high similarity between the male genitalia drawn of "Undetermined Drosophila sp.…”

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confidence: 94%

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Two new Neotropical species of Drosophila peruensis species group (Diptera, Drosophilidae)

Döge

Gottschalk

Valente

2011

Iheringia, Sér. Zool.

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The Drosophila peruensis species group was recently proposed and includes four taxa: D. atalaia Vilela & Sene, 1982, D. boraceia Vilela & Val, 2004, D. pauliceia Ratcov & Vilela, 2007, and D. peruensis Wheeler, 1959. All these species have most of setae or setulae of mesonotum arinsing from dark spots, wings with crossveins darker (except in D. atalaia) and hypandrium squared-shaped mostly fused to gonopods. Here, we describe two new species, Drosophila itacorubi sp. nov. and Drosophila paraitacorubi sp. nov., belonging to this species group. The male genitalia of these species are figured. An identification key to the D. peruensis species group is provided.

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confidence: 94%

“…Wings with both main crossveins darker than longitudinal ones, but not in fig. 9d, vilela & cunHa, 2006) and the few traits (characterized in one of her sketchbooks), though, are insufficient to certificate this statement. Such traits are "anterior scutellars divergent; main wing crossveins clouded; setae (and setulae?)…”

mentioning

confidence: 94%

Two new Neotropical species of Drosophila peruensis species group (Diptera, Drosophilidae)

Döge

Gottschalk

Valente

2011

Iheringia, Sér. Zool.

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“…Type locality: Cordoba, Argentina. Geographical distribution: BA 16,96,99,102 ; MG 16,23,24,96,102,109 ; MS 57,96,99 ; PB 96, 99 ; PE 96 ; PR 25,96,99 ; RS 27,28,29,66,96,99,102 ; SC 96 ; SP 25,34,38,107,109 53 ; RJ 53,117 ; RS 27,28,29,30,31,43,53,72 ; SC 9,12,36,53,118 ; SP 14,22,39,53,70,117…”

Section: Drosophila Neocardini Streisingermentioning

confidence: 99%

Diptera, Drosophilidae: historical occurrence in Brazil

Gottschalk¹,

Hofmann²,

Valente³

2008

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This study presents a literature review of Drosophilidae (Diptera) species occurrence in Brazil. The number of species recorded is 304, with Drosophila being the genus with the greatest number of species, followed by Zygothrica, Hirtodrosophila and Diathoneura, which belong to the Drosophilinae subfamily. Drosophila was shown to be the most investigated taxon in the family, with the best resolved species distribution. The low number of records of species from other genera indicates the paucity of studies specifically designed to investigate these species. Records of species for some regions of the country like the north and northeast, as well as for some biomes like Caatinga, Pantanal and the Pampas, are likewise rare. Apart from the banana bait, different collection methods may be necessary, like the collection at other oviposition resources, the use of baits other than fermenting fruit, and the adoption of sampling approaches that do not use baits.

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“…These structures are assumed to act as a mechanical isolation system between species (see the discussion on the lock-and-key hypothesis in Shapiro and Porter,'89). Apart from their extensive use in taxonomic studies (Crampton, '44;Wheeler, '49;Throckmorton, '62;Vilela and Cunha, 2006), there was little discussion of specific variations of the male system (but see Mayr,'63) until the wideranging investigation carried out by Eberhard ('85). Several hypotheses have recently been reviewed (Simmons, 2001;Hosken and Stockley, 2004), including sexual selection, which was presented as a possible mechanism responsible for the wide divergence of the external male apparatus as a result of sperm competition (Waage,'79,'84;Parker,'84) or sexual conflict (Parker,'79;Thornhill,'84;Arnqvist and Rowe,'95;Arnqvist,'97).…”

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confidence: 99%

Adaptation to long sperm in Drosophila: correlated development of the sperm roller and sperm packaging

2007

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Sperm are generally small and produced in huge numbers, but some species combine exaggerated sperm length with extremely limited numbers of sperm, an evolutionary trend that deviates from the theory of anisogamy. Sperm gigantism has arisen recurrently in various species, but insects exhibit the longest sperm, with some species of the Drosophilidae family producing sperm up to 6 cm in length. The anatomical, cytological, and physiological requirements for males to cope with these giant sperm were hitherto poorly understood. In this paper, we investigate the internal morphology of the male reproductive tract, and highlight specific features that may be linked to this increase in sperm size. We focus on species in the repleta group, within which sperm length varies by a factor of 35. An associated development of the sperm roller, a special twisting device inserted between the testis and the seminal vesicle, is demonstrated. Its length and the number of coils involved increase with sperm size, and it allows individual sperm to swell and roll into a spermatic pellet before reaching the seminal vesicle. This process occurs independently of and in addition to the sperm bundle coiling that takes place at the base of the testis. It is suggested that the emergence and development of the sperm roller may be a male adaptation to sperm gigantism.

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On Marta Breuer and some of her unpublished drawings of Drosophila spp. male terminalia (Diptera, Drosophilidae)

Cited by 5 publications

References 5 publications

Two new Neotropical species of Drosophila peruensis species group (Diptera, Drosophilidae)

Two new Neotropical species of Drosophila peruensis species group (Diptera, Drosophilidae)

Diptera, Drosophilidae: historical occurrence in Brazil

Adaptation to long sperm in Drosophila: correlated development of the sperm roller and sperm packaging

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