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Full-Text Articles in Life Sciences

Mother Convict Cichlids Inflict More Bites Upon An Intruder In Hot Temperatures, Jesse L. Heckendorf Aug 2014

Mother Convict Cichlids Inflict More Bites Upon An Intruder In Hot Temperatures, Jesse L. Heckendorf

STAR (STEM Teacher and Researcher) Presentations

Convict cichlids (Archocentrus nigrofasciatus) have developed to be extremely good parents by protecting their brood. Parental care leads to aggressive biting, chasing, and gill flaring to intimidate known predators. In this experiment, we show that environmental factors, such as the changing of temperature in this case, affect a female convict cichlid’s aggression toward caring for her offspring when an intruder is introduced. Females attack more in warmer water.


Shared Genes Related To Aggression, Rather Than Chemical Communication, Are Associated With Reproductive Dominance In Paper Wasps (Polistes Metricus), Amy L. Toth, John F. Tooker, Srihari Radhakrishnan, Robert Minard, Michael T. Henshaw, Christina M. Grozinger Jan 2014

Shared Genes Related To Aggression, Rather Than Chemical Communication, Are Associated With Reproductive Dominance In Paper Wasps (Polistes Metricus), Amy L. Toth, John F. Tooker, Srihari Radhakrishnan, Robert Minard, Michael T. Henshaw, Christina M. Grozinger

Ecology, Evolution and Organismal Biology Publications

Background
In social groups, dominant individuals may socially inhibit reproduction of subordinates using aggressive interactions or, in the case of highly eusocial insects, pheromonal communication. It has been hypothesized these two modes of reproductive inhibition utilize conserved pathways. Here, we use a comparative framework to investigate the chemical and genomic underpinnings of reproductive dominance in the primitively eusocial wasp Polistes metricus. Our goals were to first characterize transcriptomic and chemical correlates of reproductive dominance and second, to test whether dominance-associated mechanisms in paper wasps overlapped with aggression or pheromone-related gene expression patterns in other species. To explore whether conserved molecular ...