scholarly journals Coevolution between Male and Female Genitalia in the Drosophila melanogaster Species Subgroup

PLoS ONE ◽  
2013 ◽  
Vol 8 (2) ◽  
pp. e57158 ◽  
Author(s):  
Amir Yassin ◽  
Virginie Orgogozo
Keyword(s):  
Drosophila Melanogaster ◽  
Female Genitalia ◽  
Male And Female ◽  
Drosophila Melanogaster Species Subgroup

A review of the little known genus Wockia (Lepidoptera: Urodidae) in Russia

2016 ◽  
Vol 25 (1) ◽  
pp. 173-179
Author(s):  
S.Yu. Sinev
Keyword(s):  
East Asia ◽  
Zoological Institute ◽  
Female Genitalia ◽  
Palaearctic Species ◽  
Male And Female ◽  
First Time ◽  
Subjective Synonym

Three species of the genus Wockia Heinemann, 1870, which are so far known in Russia are reviewed; their male and female genitalia are illustrated, and a key for identification is provided. Two species, W. koreana Sohn, 2008, and W. magna Sohn, 2014, which were recently described from East Asia, are for the first time reported from Russia. The investigation of the holotype of W. funebrella Heinemann, 1870, discovered in the collection of the Zoological Institute RAS (St Petersburg), confirmed that this species is a junior subjective synonym of W. asperipunctella (Bruand, 1851). The distribution of Palaearctic species of the genus is discussed shortly.

scholarly journals Production and scavenging of reactive oxygen species both affect reproductive success in male and female Drosophila melanogaster

2021 ◽  
Author(s):  
Biz R. Turnell ◽  
Luisa Kumpitsch ◽  
Klaus Reinhardt
Keyword(s):  
Reactive Oxygen Species ◽  
Drosophila Melanogaster ◽  
Reactive Oxygen ◽  
Cellular Aging ◽  
Ros Production ◽  
Oxygen Species ◽  
Wild Type ◽  
Ros Scavenging ◽  
Respiratory Pathway ◽  
Male And Female

AbstractSperm aging is accelerated by the buildup of reactive oxygen species (ROS), which cause oxidative damage to various cellular components. Aging can be slowed by limiting the production of mitochondrial ROS and by increasing the production of antioxidants, both of which can be generated in the sperm cell itself or in the surrounding somatic tissues of the male and female reproductive tracts. However, few studies have compared the separate contributions of ROS production and ROS scavenging to sperm aging, or to cellular aging in general. We measured reproductive fitness in two lines of Drosophila melanogaster genetically engineered to (1) produce fewer ROS via expression of alternative oxidase (AOX), an alternative respiratory pathway; or (2) scavenge fewer ROS due to a loss-of-function mutation in the antioxidant gene dj-1β. Wild-type females mated to AOX males had increased fecundity and longer fertility durations, consistent with slower aging in AOX sperm. Contrary to expectations, fitness was not reduced in wild-type females mated to dj-1β males. Fecundity and fertility duration were increased in AOX and decreased in dj-1β females, indicating that female ROS levels may affect aging rates in stored sperm and/or eggs. Finally, we found evidence that accelerated aging in dj-1β sperm may have selected for more frequent mating. Our results help to clarify the relative roles of ROS production and ROS scavenging in the male and female reproductive systems.

scholarly journals A hobo Transgene That Encodes the P-Element Transposase in Drosophila melanogaster: Autoregulation and Cytotype Control of Transposase Activity

Genetics ◽  
2002 ◽  
Vol 161 (1) ◽  
pp. 195-204 ◽  
Author(s):  
Michael J Simmons ◽  
Kevin J Haley ◽  
Craig D Grimes ◽  
John D Raymond ◽  
Jarad B Niemi
Keyword(s):  
Drosophila Melanogaster ◽  
Gonadal Dysgenesis ◽  
P Element ◽  
Hsp70 Gene ◽  
Alternate Splicing ◽  
Male And Female ◽  
P Elements ◽  
Male Germline ◽  
Female Germline ◽  
Transposase Expression

Abstract Drosophila were genetically transformed with a hobo transgene that contains a terminally truncated but otherwise complete P element fused to the promoter from the Drosophila hsp70 gene. Insertions of this H(hsp/CP) transgene on either of the major autosomes produced the P transposase in both the male and female germlines, but not in the soma. Heat-shock treatments significantly increased transposase activity in the female germline; in the male germline, these treatments had little effect. The transposase activity of two insertions of the H(hsp/CP) transgene was not significantly greater than their separate activities, and one insertion of this transgene reduced the transposase activity of P(ry+, Δ2-3)99B, a stable P transgene, in the germline as well as in the soma. These observations suggest that, through alternate splicing, the H(hsp/CP) transgene produces a repressor that feeds back negatively to regulate transposase expression or function in both the somatic and germline tissues. The H(hsp/CP) transgenes are able to induce gonadal dysgenesis when the transposase they encode has P-element targets to attack. However, this ability and the ability to induce P-element excisions are repressed by the P cytotype, a chromosomal/cytoplasmic state that regulates P elements in the germline.

Occurrence of Unequal Amounts of Free Methionine in Male and Female Drosophila melanogaster

Science ◽  
1958 ◽  
Vol 127 (3296) ◽  
pp. 473-474 ◽  
Author(s):  
W. D. KAPLAN ◽  
J. T. HOLDEN ◽  
B. HOCHMAN
Keyword(s):  
Drosophila Melanogaster ◽  
Male And Female

Systematic revision and cladistic analysis of the South American genus Endeius Coiffait & Sáiz (Coleoptera: Staphylinidae)

2008 ◽  
Vol 39 (4) ◽  
pp. 381-406 ◽  
Author(s):  
Mariana Chani-Posse de Maus
Keyword(s):  
Cladistic Analysis ◽  
Identification Key ◽  
External Morphology ◽  
Female Genitalia ◽  
Valid Species ◽  
South American ◽  
The South ◽  
Systematic Revision ◽  
Male And Female

AbstractThe genus Endeius Coiffait & Sáiz, 1968 (Staphylininae: Staphylinini), distributed from Chile and Argentina through Juan Fernández Is. and Galapagos Is., is revised using characters of external morphology and male and female genitalia. Endeius comprises seven valid species: E. punctipennis (Solier), E. nitidipennis (Solier), E. subpunctipennis Coiffait & Sáiz, E. loensis Coiffait & Sáiz, E. franzi Sáiz, E. lugubris Sáiz and E. ovaliceps Coiffait. Belonuchus multipunctatus (Coiffait), comb. nov., is excluded from Endeius. An identification key to all species of the genus is provided. Monophyly of Endeius, as considered in the present study, is supported by one synapomorphy from the external morphology. Within the genus, the best supported subgroup consists of E. punctipennis (Solier), E. subpunctipennis Coiffait & Sáiz, E. loensis Coiffait & Sáiz and E. ovaliceps Coiffait.

Four new species of the subfamily Phycitinae (Lepidoptera: Pyralidae) from Kazakhstan

2021 ◽  
Vol 30 (1) ◽  
pp. 116-130
Author(s):  
E.V. Tsvetkov
Keyword(s):  
New Species ◽  
Female Genitalia ◽  
Male And Female ◽  
Lepidoptera Pyralidae ◽  
West Kazakhstan

Trachypteryx electrica sp. nov. is described from West Kazakhstan. The new species significantly differs from other species of the genus Trachypteryx Ragonot, 1893 in the female genitalia: the ductus bursae is strongly reduced and the diverticulum is absent. Two species of the subgenus Bazaria Ragonot, 1887 of the genus Gymnancyla Zeller, 1848, G. turanica sp. nov. and G. latialata sp. nov., are described from the Kyzylorda Province of Kazakhstan. Christophia constricta sp. nov. is described from the same locality. The male and female genitalia are illustrated for all species described.

A remarkable new species of cavernicolous Collartidini from Madagascar (Hemiptera: Heteroptera: Reduviidae)

Zootaxa ◽  
2018 ◽  
Vol 4425 (2) ◽  
pp. 372 ◽  
Author(s):  
DOMINIK CHŁOND ◽  
ERIC GUILBERT ◽  
ARNAUD FAILLE ◽  
PETR BAŇAŘ ◽  
LEONIDAS-ROMANOS DAVRANOGLOU
Keyword(s):  
New Species ◽  
Female Genitalia ◽  
Key To Species ◽  
Male And Female ◽  
Diagnostic Characters

Mangabea troglodytes sp. nov. (Hemiptera: Heteroptera: Reduviidae: Emesinae) is described based on four specimens collected in a cave of the Namoroka Karstic System, Madagascar, and deposited in the Collection of the Muséum National d’Histoire Naturelle, Paris. The dorsal habitus as well as diagnostic characters of male and female genitalia are extensively illustrated and imaged. A key to species of the genus Mangabea Villiers, 1970 is provided and the degree of cave specialization of the new species is discussed. 

Systematics of Mallochianamyia Santos-Neto (=Gayomyia Malloch), an unplaced genus of Neotropical acalyptrate flies (Diptera: Schizophora)

2000 ◽  
Vol 31 (2) ◽  
pp. 209-224 ◽  
Author(s):  
Terry A. Wheeler
Keyword(s):  
New Species ◽  
New World ◽  
Female Genitalia ◽  
Key To Species ◽  
Male And Female

AbstractMallochianamyia Santos-Neto was proposed as a replacement name for Gayomyia Malloch, 1933 (preoccupied by Gayomyia Banks, 1913), an unplaced genus of acalyptrate Diptera from Chile and Argentina. The genus comprises 12 species: M. cladostyla sp. n.; M. fenestrata sp. n.; M. flavitibia sp. n.; M. furcata sp. n.; M. gallina sp. n.; M. latigena sp. n.; M. magnipalpis sp. n.; M. nigrohalterata (Malloch) comb. n.; M. penai sp. n.; M. setosa sp. n.; M. truncata sp. n.; M. vexans sp. n. All new species are illustrated and a key to species of Mallochianamyia is provided. The monophyly of the genus is supported by three characters of the male and female genitalia. Mallochianamyia is most closely related to the New World genera Paraleucopis Malloch and Schizostomyia Malloch and an undescribed Australian genus. The group cannot be placed in any established family as currently defined, although there are affinities to some families in the Asteioinea sensu J. F. McAlpine (1989). Research on the morphology and relationships of genera related to Mallochianamyia is required to clarify the familial status of the group.

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