Intrasexually selected weapons
- Environmental Science, BiologyBiological reviews of the Cambridge Philosophical Society
It is conceptualized that there are five ways in which a sexually dimorphic trait, apart from the primary sex traits, can be fixed: sexual selection, fecundity selection, parental role division, differential niche occupation between the sexes, and interference competition.
The role of claw color in species recognition and mate choice in a fiddler crab
- BiologyBehavioral Ecology and Sociobiology
It is found that color is important in conspecific mate recognition but the variation among males in claw “yellowness” is unlikely to be used by females in intraspecific mates choice decisions, and no single component of claw color independently affected female choices.
Imperfect synchrony in animal displays: why does it occur and what is the true role of leadership?
- PsychologyPhilosophical Transactions of the Royal Society B
Impaired courtship synchrony in fiddler crabs is studied to mainly test whether signal leadership and rate are defined by male quality and (ii) signal leadership generates synchrony, and it is revealed that faster wave rate correlates with both leadership and synchrony.
The functions of multiple visual signals in a fiddler crab
This paper proposed to identify the roles of movement-based multiple signals in a model animal system, and explored the adaptive meaning of the wave types by manipulating the social context in which males wave.
Behavioural lateralization in domestic pigs (Sus scrofa)—variations between motor functions and individuals
- Psychology, BiologyLaterality
It is suggested that pigs show lateralization patterns that depend on the motor function and on the individual, which might have broader implications for animal personality and welfare.
Winning status of regenerated-clawed males in contests with original-clawed males in Austruca perplexa (Brachyura, Ocypodidae)
It is shown that regenerated contestants, who are either residents, or larger than opponents, or avoid fighting escalation, are able to compensate for the detrimental effect of regenerated claws during contests.
Body size, resident status, handedness and claw originality in Uca rosea (Tweedie, 1937) male fights
Results showed that body size and resident status jointly and (2) body size, resident status, handedness and claw types together, affected fighting success, and original clawed residents won more combats than regenerated clawed intruders.
Nonreversing mirrors elicit behaviour that more accurately predicts performance against live opponents
- Psychology, BiologyAnimal Behaviour
The Emergence of the Bilateral Symmetry in Animals: A Review and a New Hypothesis
The hypothesis is that the morphogenesis of biosystems is connected with the metabolism and that the oscillating kinetics in the Glycolysis have played a role in the polarity of the biological cells and in the establishment of the bilateral symmetry in Animals.
Individual Laterality in Ghost Crabs (Ocypode saratan) Influences Burrowing Behavior
It is concluded that cheliped laterality in O. saratan populations should be considered as a bimodal trait, where left- and right-handedness is not under natural selection pressure.
SHOWING 1-10 OF 50 REFERENCES
What are the consequences of being left-clawed in a predominantly right-clawed fiddler crab?
- BiologyProceedings of the Royal Society B: Biological Sciences
It appears that left-clawed males are actually lesslikely to fight, and when they do fight they are less likely to win, than right-Clawed males.
Asymmetric forceps increase fighting success among males of similar size in the maritime earwig.
- BiologyEthology : formerly Zeitschrift fur Tierpsychologie
In contests between large males, larger individuals won more fights and emerged as the dominant male and weapon asymmetry was more influential in predicting overall fighting success than body size, revealing an advantage of asymmetric weaponry among males that are below the mean size in the population.
STUDIES ON THE HANDEDNESS OF THE FIDDLER CRAB
Observations and experiments designed to elucidate the factors involved in the determination of handedness in male fiddler crabs are presented.
THE DESIGN OF A BEAUTIFUL WEAPON: COMPENSATION FOR OPPOSING SEXUAL SELECTION ON A TRAIT WITH TWO FUNCTIONS
- BiologyEvolution; international journal of organic evolution
It is suggested that the designs of weapons may often reflect compensatory patterns of growth and placement of armature that enhances the weapon's overall utility for multiple uses in competition for mates.
Dishonest signalling in a fiddler crab
- Environmental ScienceProceedings of the Royal Society of London. Series B: Biological Sciences
This work presents what it believes is the first example of a dishonest signal which is used commonly by males to attract mates and fight sexual rivals, and indicates that females are deceived as to the true costs males pay to produce sexual signals.
Born to win? Testing the fighting hypothesis in realistic fights: left-handedness in the Ultimate Fighting Championship
- PsychologyAnimal Behaviour
Combat in the Fiddler Crabs Uca Pugilator and U. Pugnax: a Quantitative Analysis
- Environmental Science
Differences between the species in the tempo and length of fights were observed, and an hypothesis, based upon habitat differences and the value of burrows as a resource, is presented to account for these differences.
Fighting in fiddler crabs Uca mjoebergi: what determines duration?
- EconomicsAnimal Behaviour
The Evolution of Animal Weapons
The potential for male competition to drive rapid divergence in weapon morphology remains one of the most exciting and understudied topics in sexual selection research today.
Asymmetry in Male Fiddler Crabs is Related to the Basic Pattern of Claw-waving Display.
- BiologyThe Biological bulletin
Morphological asymmetry was correlated with the pattern of claw-waving display in males from five species of fiddler crabs: three vertical wavers, a lateral waver, and an intermediate waver; and the total length of the five sterna bearing thoracic legs tended to be larger on vertical waver males than on the female crabs.