Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"reproductive competition"”.
-
The acquisition and maintenance of dominance in male and female cooperatively breeding meerkats, Suricata suricatta
In group-living species with strong reproductive skew, acquiring a position of dominance is often essential for maximising fitness, and where the frequency of lifetime dominance acquisition is low, substantial variation in fitness among individuals can arise. However, even among dominant …
-
Reproductive Biology of Syntopic Blackside Dace and Southern Redbelly Dace in Two Kentucky Streams
… spawning site competitors. This study examined reproductive interactions between these two species in the wild by 1) comparing spawning activities of both species in a stream where they are syntopic to those of Blackside Dace in a stream without Southern Redbelly Dace (i.e., spawning mode, …
-
Sex-specific reproductive strategies in redfronted lemurs (Eulemur fulvus rufus, Primates, Lemuridae)
… is an essential determinant of male and female reproductive strategies. Females may benefit from living with several males, whereas males generally strive to monopolize a group of females. Due to male intrasexual competition, the sex ratio of groups of anthropoid primates is generally …
-
The endocrinology and evolution of tropical social wasps: from casteless groups to high societies
… this work: to test a hypothesis on the origin of reproductive castes (i.e. queen and worker phenotypes) in a communal species (Zethus miniatus: Eumeninae), and to describe the endocrinology of two highly eusocial swarm founding species (Polybia micans and Synoeca surinama: Polistinae). Wasps offer …
-
Safer without Sex?
… all known ants, are typically characterized by a reproductive division of labor between queens, who are inseminated and reproduce, and virgin workers, who engage in foraging, nest maintenance and brood care. In most species workers have little reproductive options left: They usually produce …