scholarly journals Male reproductive strategies in black and gold howler monkeys ( Alouatta caraya )

2013 ◽  
Vol 76 (1) ◽  
pp. 43-55 ◽  
Author(s):  
Luciana I. Oklander ◽  
Martin Kowalewski ◽  
Daniel Corach
Keyword(s):  
Reproductive Strategies ◽  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Male Reproductive Strategies

Social and hormonal mechanisms underlying male reproductive strategies in black howler monkeys (Alouatta pigra)

2009 ◽  
Vol 56 (4) ◽  
pp. 355-363 ◽  
Author(s):  
S. Van Belle ◽  
A. Estrada ◽  
T.E. Ziegler ◽  
K.B. Strier
Keyword(s):  
Reproductive Strategies ◽  
Alouatta Pigra ◽  
Howler Monkeys ◽  
Male Reproductive Strategies ◽  
Black Howler ◽  
Black Howler Monkeys

Germination of native and exotic seeds dispersed by wild black-and-gold howler monkeys (Alouatta caraya): assessing deinhibition and scarification effects

Primates ◽  
2020 ◽  
Vol 61 (3) ◽  
pp. 519-527
Author(s):  
Darío M. Fergnani ◽  
Martín M. Kowalewski ◽  
Vanina A. Fernández
Keyword(s):  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Exotic Seeds

Isolation, characterization and evaluation of 11 autosomal STRs suitable for population studies in black and gold howler monkeys Alouatta caraya

2006 ◽  
Vol 7 (1) ◽  
pp. 117-120 ◽  
Author(s):  
LUCIANA I. OKLANDER ◽  
GABRIEL E. ZUNINO ◽  
ANTHONY DI FIORE ◽  
DANIEL CORACH
Keyword(s):  
Population Studies ◽  
Alouatta Caraya ◽  
Autosomal Strs ◽  
Howler Monkeys

scholarly journals Female major histocompatibility complex type affects male testosterone levels and sperm number in the horse ( Equus caballus )

2015 ◽  
Vol 282 (1807) ◽  
pp. 20150407 ◽  
Author(s):  
D. Burger ◽  
G. Dolivo ◽  
E. Marti ◽  
H. Sieme ◽  
C. Wedekind
Keyword(s):  
Major Histocompatibility Complex ◽  
Reproductive Strategies ◽  
Kin Recognition ◽  
Equus Caballus ◽  
Major Histocompatibility ◽  
Sperm Number ◽  
Sperm Velocity ◽  
Testosterone Levels ◽  
Histocompatibility Complex ◽  
Male Reproductive Strategies

Odours of vertebrates often contain information about the major histocompatibility complex (MHC), and are used in kin recognition, mate choice or female investment in pregnancy. It is, however, still unclear whether MHC-linked signals can also affect male reproductive strategies. We used horses ( Equus caballus ) to study this question under experimental conditions. Twelve stallions were individually exposed either to an unfamiliar MHC-similar mare and then to an unfamiliar MHC-dissimilar mare, or vice versa. Each exposure lasted over a period of four weeks. Peripheral blood testosterone levels were determined weekly. Three ejaculates each were collected in the week after exposure to both mares (i.e. in the ninth week) to determine mean sperm number and sperm velocity. We found high testosterone levels when stallions were kept close to MHC-dissimilar mares and significantly lower ones when kept close to MHC-similar mares. Mean sperm number per ejaculate (but not sperm velocity) was positively correlated to mean testosterone levels and also affected by the order of presentation of mares: sperm numbers were higher if MHC-dissimilar mares were presented last than if MHC-similar mares were presented last. We conclude that MHC-linked signals influence testosterone secretion and semen characteristics, two indicators of male reproductive strategies.

Patterns of Sleeping Site and Sleeping Tree Selection by Black-and-Gold Howler Monkeys (Alouatta caraya) in Northern Argentina

2019 ◽  
Vol 40 (3) ◽  
pp. 374-392 ◽  
Author(s):  
Melina V. Brividoro ◽  
Martin M. Kowalewski ◽  
Clara J. Scarry ◽  
Luciana I. Oklander
Keyword(s):  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Sleeping Site
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