Five new species of Drosophila guarani group from the Andes of southern Ecuador (Diptera, Drosophilidae)

Peñafiel-Vinueza, Ana Danitza; Rafael, Violeta

doi:10.3897/zookeys.781.22841

Cited by 7 publications

(7 citation statements)

References 10 publications

(15 reference statements)

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“…The currently published data suggest that genital asymmetries are rare among Drosophila species. The genus Drosophila encompasses over 1500 described species [39] and only 8 species have been shown without doubt to display an asymmetric phallus: D. marieaehelenae and D. hollisae of the flavopilosa group [40, 41], D. asymmetrica and D. quinarensis of the guarani group [42, 43] D. endobranchia of the canalinea group [44], D. acuminanus and D. freilejoni of the onychophora group [27, 45, 46] and the nannoptera group species D. acanthoptera [27]. Genital asymmetry might be more widespread than what is reported in the literature across Drosophila , as certain species are only described based on a few specimens, and subtle asymmetric characters might have been overlooked and interpreted as fluctuating variation between left and right sides.…”

Section: Discussionmentioning

confidence: 99%

Repeated evolution of asymmetric genitalia and right-sided mating behavior in theDrosophila nannopteraspecies group

Acurio

Rhebergen

Paulus

et al. 2019

Preprint

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16Background: Male genitals have repeatedly evolved left-right asymmetries, and the 17 causes of such evolution remain unclear. The Drosophila nannoptera group contains four 18 species, among which three exhibit left-right asymmetries of distinct genital organs. In the 19 most studied species, Drosophila pachea, males display asymmetric genital lobes and 20 they mate right-sided on top of the female. Copulation position of the other species is 21 unknown. 22Results: To assess whether the evolution of genital asymmetry could be linked to the 23 evolution of one-sided mating, we examined phallus morphology and copulation position in 24 D. pachea and closely related species. The phallus was found to be symmetric in all 25 investigated species except D. pachea, which display an asymmetric phallus with a right-26 sided gonopore, and D. acanthoptera, which harbor an asymmetrically bent phallus. In all 27 examined species, males were found to position themselves symmetrically on top of the 28 female, except in D. pachea and D. nannoptera, where males mated right-sided, in 29 distinctive, species-specific positions. In addition, the copulation duration was found to be 30 increased in nannoptera group species compared to closely related outgroup species. 31 Conclusion: Our study shows that gains, and possibly losses, of asymmetry in genital 32 morphology and mating position have evolved repeatedly in the nannoptera group. Current 33 data does not allow us to conclude whether genital asymmetry has evolved in response to 34 changes in mating position, or vice versa. 35 36 Background 39 Changes in behavior are thought to play important roles in animal evolution [1-3] . 40 How new behaviors evolve and how they are encoded in the genome is little understood. 41 New behaviors can initiate secondary evolutionary shifts in morphology, physiology or 42 ecology ("behavioral drive") [1-9] , for example when they bring an organism into contact 43 with new environmental factors. Behavior can also prevent evolutionary changes because 44 plasticity in behavior might enable individuals to adjust for changed environmental 45 conditions [10-12] . Other investigations suggest that behavior and morphology are both 46 subject to natural selection and that their responses to changes in the environment are 47 D. pachea and D. nannoptera males mate right-sided 126 The position of the male during copulation has not been described for any of the 127 closely related species of D. pachea. In this study, we assessed copulation postures in D. 128 pachea and nine related species: D. acanthoptera and D. nannoptera (sister species of D. 129 pachea), D. machalilla and D. bromeliae (representatives of close outgroup lineages), D. 130 buzzatii and D. mojavensis (members of the repleta species group), as well as 131representatives of other Drosophila species groups (D. tripunctata, D. willistoni and D. 132 melanogaster). Phylogenetic relationships between the ten studied species were 133 estimated with a Bayesian phylogeny ( Supplementary Fig. 6) based on...

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Section: Discussionmentioning

confidence: 99%

Repeated evolution of asymmetric genitalia and right-sided mating behavior in theDrosophila nannopteraspecies group

Acurio

Rhebergen

Paulus

et al. 2019

Preprint

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“…Were analyzed natural populations of D. zamorana (QCAZ-I 3266) (location 3°59′16.7ʺS; 79°5′35ʺW) and D. sachapuyu (QCAZ-I 3309) (4°6′53.7ʺS; 79°10′54.6ʺW) collected in the Podocarpus National Park (Zamora Chinchipe and Loja provinces in Ecuador) ( Peñafiel and Rafael 2018 ) and maintained in the Drosophila ceparium of Evolutionary Genetics Laboratory of Pontificia Universidad Católica del Ecuador. The species are maintained in banana culture medium supplemented with fresh fruit, in temperate room at 17°C, 12 h cycle light/dark.…”

Section: Methodsmentioning

confidence: 99%

“…The guarani group of Drosophila genus (Diptera: Drosophilidae) is a neotropical group proposed by Dobzhansky and Pavan (1943) and nowadays includes 24 species ( Bachli 2021 ): D. limbinervis ( Duda, 1925 ); D. griseolineata ( Duda, 1927 ); D. ornatifrons ( Duda, 1927 ); D. maculifrons ( Duda, 1927 ); D. nigrifemur ( Duda, 1927 ); D. guaru ( Dobzhansky & Pavan, 1943 ); D. subbadia ( Patterson, 1943 ); D. guaraja ( King, 1947 ); D. alexandrei ( Cordeiro, 1951 ); D. araucana ( Brncic, 1957 ); D. huilliche ( Brncic, 1957 ); D. tucumana ( Vilela and Pereira, 1985 ); D. urubamba ( Vilela & Pereira 1993 ); D. ecuatoriana ( Vela & Rafael, 2004 ); D. pichinchana ( Vela & Rafael, 2004 ); D. quitensis ( Vela & Rafael, 2004 ); D. cuscungu ( Vela & Rafael, 2005 ); D. butantan ( Ratcov et al, 2017 ); D. sachapuyu ( Peñafiel & Rafael, 2018 ); D. zamorana ( Peñafiel & Rafael, 2018 ); D. quinarensis ( Peñafiel & Rafael, 2018 ); D. caxarumi ( Peñafiel & Rafael, 2018 ); D. misi ( Peñafiel & Rafael, 2018 ); D. peixoto ( Vaz et al, 2018 ).…”

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Karyotype Description of Two Andean Species of the guarani Group of Drosophila (Díptera: Drosophilidae) and Cytological Notes

Vela

Villavicencio

2021

Journal of Insect Science

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The guarani group of Drosophila genus (Diptera: Drosophilidae) is formed by 24 species however the relationship of these species is not clear. In the present study are described the karyotypes of Drosophila sachapuyu Peñafiel and Rafael, 2018 and Drosophila zamorana Peñafiel and Rafael, 2018, two Andean species members of the guarani group. Mitotic chromosomes from cerebral ganglia of third stand larval were obtained by thermal shock and cell suspension techniques. The karyotype of D. sachapuyu, presents 2n = 10 (4R, 1V; X = R, Y = R) while D. zamorana exhibits karyotype 2n = 12 (5R, 1V; X = V, Y = R).

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“…from the guarani and funebris species groups. The guarani group is neotropical(Penafiel-Vinueza & Rafael, 2018), and very…”

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confidence: 99%

Investigating the phylogenetic history of toxin tolerance in mushroom‐feeding Drosophila

Erlenbach,

Haynes,

Fish

et al. 2023

Ecology and Evolution

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Understanding how and when key novel adaptations evolved is a central goal of evolutionary biology. Within the immigrans‐tripunctata radiation of Drosophila, many mushroom‐feeding species are tolerant of host toxins, such as cyclopeptides, that are lethal to nearly all other eukaryotes. In this study, we used phylogenetic and functional approaches to investigate the evolution of cyclopeptide tolerance in the immigrans‐tripunctata radiation of Drosophila. First, we inferred the evolutionary relationships among 48 species in this radiation using 978 single copy orthologs. Our results resolved previous incongruities within species groups across the phylogeny. Second, we expanded on previous studies of toxin tolerance by assaying 16 of these species for tolerance to α‐amanitin and found that six of them could develop on diet with toxin. Finally, we asked how α‐amanitin tolerance might have evolved across the immigrans‐tripunctata radiation, and inferred that toxin tolerance was ancestral in mushroom‐feeding Drosophila and subsequently lost multiple times. Our findings expand our understanding of toxin tolerance across the immigrans‐tripunctata radiation and emphasize the uniqueness of toxin tolerance in this adaptive radiation and the complexity of biochemical adaptations.

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Five new species of Drosophila guarani group from the Andes of southern Ecuador (Diptera, Drosophilidae)

Cited by 7 publications

References 10 publications

Repeated evolution of asymmetric genitalia and right-sided mating behavior in theDrosophila nannopteraspecies group

Repeated evolution of asymmetric genitalia and right-sided mating behavior in theDrosophila nannopteraspecies group

Karyotype Description of Two Andean Species of the guarani Group of Drosophila (Díptera: Drosophilidae) and Cytological Notes

Investigating the phylogenetic history of toxin tolerance in mushroom‐feeding Drosophila

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