scholarly journals Life as a bachelor: quantifying the success of an alternative reproductive tactic in male blue monkeys

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1043 ◽  
Author(s):  
Su-Jen Roberts ◽  
Marina Cords
Keyword(s):  
Alternative Reproductive Tactic ◽  
Blue Monkeys ◽  
Reproductive Tactic

scholarly journals Male-Male Clasping May Be Part of an Alternative Reproductive Tactic in Xenopus laevis

PLoS ONE ◽  
2014 ◽  
Vol 9 (5) ◽  
pp. e97761 ◽  
Author(s):  
Heather J. Rhodes ◽  
Rachel J. Stevenson ◽  
Courtney L. Ego
Keyword(s):  
Xenopus Laevis ◽  
Alternative Reproductive Tactic ◽  
Reproductive Tactic

Does Body Size Influence Male Care? Investigating an Alternative Reproductive Tactic in Manogea porracea (Araneae: Araneidae), a Spider with Amphisexual Care

2019 ◽  
Vol 32 (3) ◽  
pp. 201-206 ◽  
Author(s):  
Rafael R. Moura ◽  
Nelson S. Pinto ◽  
João Vasconcellos-Neto ◽  
Marcelo O. Gonzaga
Keyword(s):  
Body Size ◽  
Male Care ◽  
Alternative Reproductive Tactic ◽  
Reproductive Tactic

scholarly journals Early Menarche as an Alternative Reproductive Tactic in Human Females: An Evolutionary Approach to Reproductive Health Issues

2012 ◽  
Vol 10 (5) ◽  
pp. 147470491201000 ◽  
Author(s):  
Meghan T. Gillette ◽  
Kaila E. Folinsbee
Keyword(s):  
Reproductive Health ◽  
Modern Human ◽  
Menstrual Period ◽  
Human Females ◽  
Early Menarche ◽  
Stressful Environment ◽  
Menarcheal Age ◽  
Alternative Reproductive Tactic ◽  
Reproductive Tactic

The age at which a female reaches sexual maturity is critical in determining her future reproductive health and success. Thus, a worldwide decline in menarcheal age (timing of first menstrual period) may have serious long-term consequences. Early menarcheal timing (first menstrual period before age 12) can have a negative effect on fecundity, as well as the quality and quantity of offspring, and may consequently influence population growth or decline. In this paper, we apply an evolutionary framework to modern human health, and assess both proximate and ultimate consequences of declining menarcheal age. Examination of human reproductive health within an evolutionary framework is innovative and essential, because it illuminates the ultimate consequences of a declining age of menarche and facilitates new ways of thinking about the long-term and intergenerational transmission of health and disease; thus, an evolutionary framework lends itself to innovative public health and policy programs. In this paper, we examine whether or not early menarche is an alternative reproductive tactic that modern human females employ in response to a stressful environment, and whether or not early menarche is ultimately beneficial.

scholarly journals Temporal variation in brain transcriptome is associated with the expression of female mimicry as a sequential male alternative reproductive tactic in fish

2017 ◽  
Vol 27 (3) ◽  
pp. 789-803 ◽  
Author(s):  
Sara D. Cardoso ◽  
David Gonçalves ◽  
Alexander Goesmann ◽  
Adelino V. M. Canário ◽  
Rui F. Oliveira
Keyword(s):  
Temporal Variation ◽  
Brain Transcriptome ◽  
Female Mimicry ◽  
Alternative Reproductive Tactic ◽  
Reproductive Tactic

scholarly journals Wandering in male fiddler crabs (Uca tangeri): alternative reproductive tactic or a functional constraint?

Behaviour ◽  
2005 ◽  
Vol 142 (7) ◽  
pp. 929-939 ◽  
Author(s):  
J.M. Jordão ◽  
R.F. Oliveira
Keyword(s):  
Lunar Cycle ◽  
Functional Constraint ◽  
Fiddler Crabs ◽  
Random Movement ◽  
Surface Copulation ◽  
Alternative Reproductive Tactic ◽  
Uca Tangeri ◽  
Reproductive Tactic

AbstractThe 'aggressive wandering' behaviour of male fiddler crabs is well documented in several species and is usually described as an apparently random movement through a population, punctuated by threats and combat directed at displaying males, and superficial burrow explorations. It has been suggested that wandering males are mainly low condition individuals with a regenerating major claw, unsuccessful at attracting mates, wandering through the population seeking surface copulations as an alternative to burrow copulations, which may be considered an alternative reproductive tactic. In order to test this hypothesis we have made several predictions. We observed several focal wandering males, compared sizes of wandering and resource holder individuals, and monitored their abundance across the lunar cycle. We did not observe any surface copulation attempts in any of our focal subjects. The number of burrows explored by wandering males was highly variable and not dependent on the subject's size although larger males do spend more time superficially exploring burrows. Wandering males are significantly larger than burrow-holder males and there was a peak in wandering in the first moon quarter. We conclude that it is important to dissociate wandering from surface copulations and that wandering is not an alternative reproductive tactic for lower condition males. The number of wandering males across the lunar cycle still suggests that wandering may be related to mating and we discuss several ways in which it could be possible.

An alternative reproductive tactic: A parasitoid wasp gathers and guards a harem by pheromone-tagging virgins

2013 ◽  
Vol 94 ◽  
pp. 32-40 ◽  
Author(s):  
Kelly M. Ablard ◽  
Paul W. Schaefer ◽  
Gerhard Gries
Keyword(s):  
Parasitoid Wasp ◽  
Alternative Reproductive Tactic ◽  
Reproductive Tactic

Cooperative breeding as an alternative reproductive tactic

2009 ◽  
pp. 451-470 ◽  
Author(s):  
WalteR. D Koenig ◽  
Janis L. Dickinson
Keyword(s):  
Cooperative Breeding ◽  
Alternative Reproductive Tactic ◽  
Reproductive Tactic
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