Search results
Results from the WOW.Com Content Network
A high-ranking male mandrill advertises his status with bright facial coloration. [1]In the zoological field of ethology, a dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social groups interact, creating a ranking system.
The American pika (Ochotona princeps) is known to maintain strict territorial boundaries, and dominance between individuals is enforced through a dominant pika invading another pika's territory, forcing the latter out. The general hierarchy of dominance has been observed (higher to lower in dominance) from male to female and adult to juvenile.
The neurobiology of drosophila mating behavior is an area of research that has studied in detail and has elucidated the genetic basis for behavior. The male courts a female based on pheromones from the female and previous experience courting other potential mates. The female accepts or rejects the male's courtship also based on pheromones, the ...
The dominance hierarchy for the E locus alleles appears to be as follows: E m > E G/d > E > e h > e. E allows normal expression of eumelanin and/or phaeomelanin according to the alleles present at the A and K loci. E m allows similar pattern expression to E except any tan (phaeomelanin) areas on the mask area are replaced with eumelanin (black ...
Eusociality is a rare but widespread phenomenon in species in at least seven orders in the animal kingdom, as shown in the phylogenetic tree (non-eusocial groups not shown). All species of termites are eusocial, and it is believed that they were the first eusocial animals to evolve, sometime in the upper Jurassic period (~150 million years ago ...
Visual communication is a common dominance signal among animals. They are an effective modality as they come at a low cost to the animal and minimize risk. The Gila Monster (Heloderma suspectum) for example, express bright orange splotches during territorial conflict to warn competitors that they are poisonous, and thus assert their dominance over a territory.
Elephants can use their ears as threat displays in male-to-male competition. Sexual selection in mammals is a process the study of which started with Charles Darwin's observations concerning sexual selection, including sexual selection in humans, and in other mammals, [1] consisting of male–male competition and mate choice that mold the development of future phenotypes in a population for a ...
Social rank theory provides an evolutionary paradigm that locates affiliative and ranking structures at the core of many psychological disorders.In this context, displays of submission signal to dominant individuals that subordinate group members are not a threat to their rank within the social hierarchy.