scholarly journals Genital morphology associated with mating strategy in the polymorphic lizard, Uta stansburiana

2018 ◽  
Vol 280 (2) ◽  
pp. 184-192 ◽  
Author(s):  
Casey A. Gilman ◽  
Ammon Corl ◽  
Barry Sinervo ◽  
Duncan J. Irschick
Keyword(s):  
Mating Strategy ◽  
Genital Morphology ◽  
Uta Stansburiana

Is Aggression an Adolescent Mating Strategy?

2011 ◽  
Author(s):  
Kelly L. Sichel ◽  
Marla Brassard ◽  
Sayaka Aoki
Keyword(s):  
Mating Strategy

Tales of lizard tails: effects of tail autotomy on subsequent survival and growth of free-ranging hatchling Uta stansburiana

1997 ◽  
Vol 75 (4) ◽  
pp. 542-548 ◽  
Author(s):  
P. H. Niewiarowski ◽  
J. D. Congdon ◽  
A. E. Dunham ◽  
L. J. Vitt ◽  
D. W. Tinkle
Keyword(s):  
Natural Populations ◽  
Reproductive Investment ◽  
Experimental Manipulation ◽  
Costs And Benefits ◽  
Growth And Survival ◽  
Large Sample ◽  
Uta Stansburiana ◽  
Tail Autotomy ◽  
Trade Offs ◽  
Free Ranging

Potential costs and benefits of tail autotomy in lizards have been inferred almost exclusively from experimental study in semi-natural enclosures and from indirect comparative evidence from natural populations. We present complementary evidence of the costs of tail autotomy to the lizard Uta stansburiana from detailed demographic study of a natural population. On initial capture, we broke the tails of a large sample of free-ranging hatchlings (560) and left the tails of another large sample (455) intact, and then followed subsequent hatchling growth and survival over a 3-year period. Surprisingly, in 1 out of the 3 years of study, survival of female hatchlings with broken tails exceeded that of female hatchlings with intact tails. Furthermore, no effects of tail loss on survivorship were detected for male hatchlings. However, in 2 years when recaptures were very frequent (1961, 1962), growth rates of hatchlings with broken tails were significantly slower than those of their counterparts with intact tails. We discuss our results in the broader context of estimating the relative costs and benefits of tail autotomy in natural populations, and suggest that long-term demographic studies will provide the best opportunity to assess realized fitness costs and benefits with minimum bias. We also describe how experimentally induced tail autotomy can be used as a technique to complement experimental manipulation of reproductive investment in the study of life-history trade-offs.

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.

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