scholarly journals Frequent origins of traumatic insemination involve convergent shifts in sperm and genital morphology

2021 ◽  
Author(s):  
Jeremias N. Brand ◽  
Luke J. Harmon ◽  
Lukas Schärer
Keyword(s):  
Genital Morphology

scholarly journals Social Structure Predicts Genital Morphology in African Mole-Rats

PLoS ONE ◽  
2009 ◽  
Vol 4 (10) ◽  
pp. e7477 ◽  
Author(s):  
Marianne L. Seney ◽  
Diane A. Kelly ◽  
Bruce D. Goldman ◽  
Radim Šumbera ◽  
Nancy G. Forger
Keyword(s):  
Social Structure ◽  
Genital Morphology

PSYCHOLOGIC EVALUATION OF THE CHILD WITH INTERSEX PROBLEMS

PEDIATRICS ◽  
1965 ◽  
Vol 36 (1) ◽  
pp. 51-55
Author(s):  
John Money
Keyword(s):  
Critical Period ◽  
External Morphology ◽  
Sex Reassignment ◽  
Genital Morphology ◽  
Social Stimulation ◽  
Language Differentiation ◽  
Sex Assignment

Psychosexual differentiation is a function of age. Therefore, the weight to be given it in hermaphroditic sex-assignment decisions is also a function of age. Psychosexual differentiation roughly parallels language differentiation and both are dependent on social stimulation and experience. By kindergarten age the critical period has been passed and the psychosexual identity, though not fully mature, fixed. Psychosexual identity may contradict chromosomal, gonadal, or hormonal sex. It more generally agrees with the external genital morphology and the assigned sex. Rarely, psychosexual identity and assigned sex are discrepant, in which case a sex assignment is feasible in later childhood or adolescence. Otherwise, sex reassignment is for the most part contraindicated. It is not obligatory that assigned sex should agree with chromosomal or gonadal sex, but it should agree with external morphology, surgically corrected, and with hormonal sex correctly regulated at puberty.

A new species of the enigmatic genus Oressinoma Doubleday from the Andes of central Peru (Lepidoptera: Nymphalidae, Satyrinae)

Zootaxa ◽  
2021 ◽  
Vol 4999 (2) ◽  
Author(s):  
KLAUDIA FLORCZYK ◽  
CHRISTER FÅHRAEUS ◽  
PIERRE BOYER ◽  
ANNA ZUBEK ◽  
TOMASZ W. PYRCZ
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
Preliminary Analysis ◽  
The Other ◽  
Genital Morphology ◽  
The Third ◽  
The Andes ◽  
A New Species

A new, and only the third known species of the Neotropical montane genus Oressinoma Doubleday is described—O. sorina n. sp., from the Andes of central Peru. It is distinguishable immediately from the other two congeners by the shape of the hindwing underside submarginal orange band, and by the male genitalia. The systematics of Oressinoma are reviewed. A preliminary analysis is carried out based on COI barcode confirming the separate specific status of O. sorina n. sp. in relation to other two congeners. Both barcode and genital morphology data suggest that the widespread O. typhla Doubleday may be a complex of allopatric or, locally parapatric species. The genus Oressinoma is the only neotropical member of the predominantly Australian subtribe Coenonymphina, represented in the entire Holarctic by one genus only—Coenonympha Hübner, considered as the putative sister-genus of Oressinoma. Their origins and relationships are briefly discussed.

scholarly journals Parallel changes in genital morphology delineate cryptic diversification of planktonic nudibranchs

2013 ◽  
Vol 280 (1765) ◽  
pp. 20131224 ◽  
Author(s):  
Celia K. C. Churchill ◽  
Alvin Alejandrino ◽  
Ángel Valdés ◽  
Diarmaid Ó Foighil
Keyword(s):  
Genital Morphology

scholarly journals A new species of the Liolaemus elongatus group (Iguania: Liolaemidae)from Neuquén Province, Argentina, with comments on its genital morphology

2019 ◽  
Vol 33 (1) ◽  
Author(s):  
Soledad Ruiz ◽  
Matias Quipildor ◽  
Ana Bulacios Arroyo ◽  
Pablo Chafrat ◽  
Cristian Abdala
Keyword(s):  
New Species ◽  
Genital Morphology ◽  
A New Species

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

2019 ◽  
Author(s):  
Andrea Acurio ◽  
Flor T. Rhebergen ◽  
Sarah Paulus ◽  
Virginie Courtier-Orgogozo ◽  
Michael Lang
Keyword(s):  
Related Species ◽  
Current Data ◽  
The Other ◽  
Genital Morphology ◽  
Closely Related Species ◽  
Outgroup Species ◽  
Repeated Evolution ◽  
Drosophila Pachea ◽  
Species Specific ◽  
Group Species

AbstractBackgroundMale genitals have repeatedly evolved left-right asymmetries, and the causes of such evolution remain unclear. TheDrosophila nannopteragroup contains four species, among which three exhibit left-right asymmetries of distinct genital organs. In the most studied species,Drosophila pachea, males display asymmetric genital lobes and they mate right-sided on top of the female. Copulation position of the other species is unknown.ResultsTo assess whether the evolution of genital asymmetry could be linked to the evolution of one-sided mating, we examined phallus morphology and copulation position inD. pacheaand closely related species. The phallus was found to be symmetric in all investigated species exceptD. pachea, which display an asymmetric phallus with a right-sided gonopore, andD. acanthoptera, which harbor an asymmetrically bent phallus. In all examined species, males were found to position themselves symmetrically on top of the female, except inD. pacheaandD. nannoptera, where males mated right-sided, in distinctive, species-specific positions. In addition, the copulation duration was found to be increased innannopteragroup species compared to closely related outgroup species.ConclusionOur study shows that gains, and possibly losses, of asymmetry in genital morphology and mating position have evolved repeatedly in thenannopteragroup. Current data does not allow us to conclude whether genital asymmetry has evolved in response to changes in mating position, or vice versa.

scholarly journals Descriptions of three new species of jumping-spiders, genus Arnoliseus (Araneae, Salticidae), from Rio de Janeiro state, Brazil, with comments on their genital morphology and a key to species

2020 ◽  
Vol 96 (1) ◽  
pp. 73-90
Author(s):  
Renner Luiz Cerqueira Baptista ◽  
Pedro de Souza Castanheira ◽  
Gabriel Assunção Oliveira ◽  
André Wanderley do Prado
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Genital Morphology ◽  
Key To Species ◽  
Jumping Spider ◽  
Jumping Spiders ◽  
Three New Species ◽  
The City ◽  
Janeiro State

New data on the jumping-spider genus Arnoliseus are presented. Three new species from the Atlantic Forest in Rio de Janeiro state are described, based on both sexes: Arnoliseus cariocasp. nov. from the city of Rio de Janeiro, and Arnoliseus hastatussp. nov. and Arnoliseus falcatussp. nov. from the municipality of Cachoeiras de Macacu. The genus’ genital morphology is discussed in detail and new English terminology for their structures is created. An identification key for all Arnoliseus species is given.

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