scholarly journals Interspecific introgression reveals a role of male genital morphology during the evolution of reproductive isolation in Drosophila

Evolution ◽  
2021 ◽  
Author(s):  
Stephen R. Frazee ◽  
Angelica R. Harper ◽  
Mehrnaz Afkhami ◽  
Michelle L. Wood ◽  
John C. McCrory ◽  
...  
Keyword(s):  
Reproductive Isolation ◽  
Genital Morphology ◽  
Interspecific Introgression ◽  
Male Genital Morphology ◽  
Male Genital

Interspecific introgression reveals a role of male genital morphology during the evolution of reproductive isolation in Drosophila

2020 ◽  
Author(s):  
Stephen R. Frazee ◽  
Angelica R. Harper ◽  
Mehrnaz Afkhami ◽  
Michelle L. Wood ◽  
John C. McCrory ◽  
...  
Keyword(s):  
Reproductive Isolation ◽  
Posterior Lobe ◽  
Genital Morphology ◽  
Sensory Bias ◽  
Interspecific Introgression ◽  
Drosophila Mauritiana ◽  
Rapid Divergence ◽  
Widespread Phenomenon ◽  
Reproductive Consequences

AbstractRapid divergence in genital structures among nascent species has been posited to be an early-evolving cause of reproductive isolation, although evidence supporting this idea as a widespread phenomenon remains mixed. Using a collection of interspecific introgression lines between two Drosophila species that diverged ∼240,000 years ago, we tested the hypothesis that even modest divergence in genital morphology can result in substantial fitness losses. We studied the reproductive consequences of variation in the male epandrial posterior lobes between Drosophila mauritiana and D. sechellia and found that divergence in posterior lobe morphology has significant fitness costs on several pre-fertilization and post-copulatory reproductive measures. Males with divergent posterior lobe morphology also significantly reduced the life span of their mates. Interestingly, one of the consequences of genital divergence was decreased oviposition and fertilization, which suggests that a sensory bias for posterior lobe morphology could exist in females, and thus posterior lobe morphology may be the target of cryptic female choice in these species. Our results provide evidence that divergence in genitalia can in fact give rise to substantial reproductive isolation early during species divergence, and they also reveal novel reproductive functions of the external male genitalia in Drosophila.

scholarly journals Evolutionary Response to Sexual Selection in Male Genital Morphology

2009 ◽  
Vol 19 (17) ◽  
pp. 1442-1446 ◽  
Author(s):  
Leigh W. Simmons ◽  
Clarissa M. House ◽  
John Hunt ◽  
Francisco García-González
Keyword(s):  
Sexual Selection ◽  
Genital Morphology ◽  
Evolutionary Response ◽  
Male Genital Morphology ◽  
Male Genital

scholarly journals A new Peruvian species of Scybalocanthon Martínez, 1948 (Coleoptera, Scarabaeidae, Scarabaeinae, Deltochilini) and some remarkable intrapopulational variation in the endophallus of S. pinopterus (Kirsch, 1873)

ZooKeys ◽  
2019 ◽  
Vol 884 ◽  
pp. 69-80
Author(s):  
Fernando A. B. Silva ◽  
François Génier
Keyword(s):  
Identification Key ◽  
Genital Morphology ◽  
Diagnostic Characters ◽  
Madre De Dios ◽  
Intrapopulational Variation ◽  
Male Genital Morphology ◽  
Male Genital

Scybalocanthon asheisp. nov. from Madre de Dios, Peru, is described based on differences in external and male genital morphology. Its diagnostic characters and an updated identification key to the species of the genus are provided as well as new distributional data for the following species: S. acrianus Silva & Valois, 2019, S. aereus (Schmidt, 1922), S. kaestneri (Balthasar, 1939) and S. pinopterus (Kirsch, 1873).

Three new species of Ciulfina Giglio-Tos (Mantodea: Liturgusidae)  from north-eastern Australia

Zootaxa ◽  
2007 ◽  
Vol 1583 (1) ◽  
pp. 23-35 ◽  
Author(s):  
GREGORY I. HOLWELL ◽  
SCOTT G. GINN ◽  
MARIE E. HERBERSTEIN
Keyword(s):  
New Species ◽  
Tree Trunk ◽  
Northern Australia ◽  
Genital Morphology ◽  
Small Tree ◽  
Eastern Australia ◽  
North Eastern ◽  
Three New Species ◽  
Male Genital Morphology ◽  
Male Genital

The genus Ciulfina Giglio-Tos includes a number of small tree-trunk dwelling species of praying mantids that are found through eastern Queensland and northern Australia. Three new species of Ciulfina: C. baldersoni, C. klassi and C. rentzi and one existing species C. biseriata (Westwood) are formally described on the basis of male genital morphology. A key to the identification of Ciulfina based on genital morphology is also provided.

Morphometry of stingless bees (Hymenoptera:Apidae:Meliponini) of the genus Lisotrigona indicates presence of more than one species in India

ENTOMON ◽  
2021 ◽  
Vol 46 (2) ◽  
pp. 95-104
Author(s):  
Shashidhar Viraktamath ◽  
Ashish Kumar Jha ◽  
Shubham Rao ◽  
Rojeet Thangajam ◽  
Jagruti Roy
Keyword(s):  
Discriminant Analysis ◽  
Stingless Bees ◽  
Canonical Discriminant Analysis ◽  
The Body ◽  
Morphological Parameters ◽  
Genital Morphology ◽  
Data Set ◽  
Male Genital Morphology ◽  
Molecular Characters ◽  
Male Genital

Morphometry of 53 stingless bees of the genus Lisotrigona collected from seven places in India by using 36 morphological parameters was studied. The data set also included  morphometry data of primary types of L. cacciae, L. chandrai and L. revanai for comparison and was subjected to Factor and Canonical Discriminant analysis. All the bees collected from five places formed two distinct clusters in the Factor analysis and five clusters in Canonical Discriminant analysis. In both the methods of analysis primary types of L. cacciae, L. chandrai and L. revanai were placed well separated from each other as well as from other bees. The bees from seven places also differed from the three known species in morphometry and ratios of length and width of parts of the body. Based on these results it is concluded that Indian stingless bees of the genus Lisotrigona consists of more than one species besides L. cacciae. The action of synonymizing L. mohandasi, L. chandrai and L. revanai with L. cacciae appears arbitrary; these three species should be considered valid until supported by male genital morphology or molecular characters.

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