Infanticide in seasonally breeding multimale groups of Hanuman langurs ( Presbytis entellus ) in Ramnagar (South Nepal)

1997 ◽  
Vol 41 (3) ◽  
pp. 139-150 ◽  
Author(s):  
Carola Borries
Keyword(s):  
Presbytis Entellus ◽  
Multimale Groups ◽  
Seasonally Breeding

Males as infant protectors in Hanuman langurs ( Presbytis entellus ) living in multimale groups - defence pattern, paternity and sexual behaviour

1999 ◽  
Vol 46 (5) ◽  
pp. 350-356 ◽  
Author(s):  
Carola Borries ◽  
Kristin Launhardt ◽  
Cornelia Epplen ◽  
Jörg T. Epplen ◽  
Paul Winkler
Keyword(s):  
Sexual Behaviour ◽  
Presbytis Entellus ◽  
Multimale Groups

Seasonal reproduction and gonadal function: A focus on humans starting from animal studies

2021 ◽  
Author(s):  
Ester Beltran-Frutos ◽  
Livio Casarini ◽  
Daniele Santi ◽  
Giulia Brigante
Keyword(s):  
Animal Studies ◽  
Current Knowledge ◽  
Seasonal Pattern ◽  
Human Reproduction ◽  
Gonadal Function ◽  
Functional Changes ◽  
Morphological Variations ◽  
Gonadal Atrophy ◽  
Main Regulator ◽  
Seasonally Breeding

Abstract Photoperiod impacts reproduction in many species of mammals. Mating occurs at specific seasons to achieve reproductive advantages, such as optimization of offspring survival. Light is the main regulator of these changes during the photoperiod. Seasonally breeding mammals detect and transduce light signals through extraocular photoreceptor, regulating downstream melatonin-dependent peripheral circadian events. In rodents, hormonal reduction and gonadal atrophy occur quickly, and consensually with short-day periods. It remains unclear whether photoperiod influences human reproduction. Seasonal fluctuations of sex hormones have been described in humans, although they seem to not imply adaptative seasonal pattern in human gonads. This review discusses current knowledge about seasonal changes in the gonadal function of vertebrates, including humans. The photoperiod-dependent regulation of hypothalamic–pituitary-gonadal axis, as well as morphological and functional changes of the gonads are evaluated herein. Endocrine and morphological variations of reproductive functions, in response to photoperiod, are of interest as they may reflect the nature of past population selection for adaptative mechanisms that occurred during evolution.

UNILATERAL HYPOPLASIA OF THE KIDNEY OF A FEMALE LANGUR PRESBYTIS ENTELLUS ENTELLUS DUFRESNE

1967 ◽  
Vol 5 (4) ◽  
pp. 312-315 ◽  
Author(s):  
G.F.X. David ◽  
L.S. Ramaswami
Keyword(s):  
Presbytis Entellus

Play as Indicator of Habitat Quality: A Field Study of Langur Monkeys (Presbytis entellus)

Ethology ◽  
2010 ◽  
Vol 99 (3) ◽  
pp. 177-192 ◽  
Author(s):  
Volker Sommer ◽  
Domingo Mendoza-Granados
Keyword(s):  
Field Study ◽  
Habitat Quality ◽  
Presbytis Entellus
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