Transplant experiments demonstrate that larger brains are favoured in high-competition environments in Trinidadian killifish.
Sign Up to like & getrecommendations! Published in 2022 at "Ecology letters"
DOI: 10.1111/ele.14133
Abstract: The extent to which the evolution of a larger brain is adaptive remains controversial. Trinidadian killifish (Anablepsoides hartii) are found in sites that differ in predation intensity; fish that experience decreased predation and increased intraspecific… read more here.
Keywords: larger brains; brain; competition; competition environments ... See more keywords
Seasonal variation in the utility of a status signaling system: Plumage ornament predicts foraging success only during periods of high competition
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DOI: 10.1371/journal.pone.0185584
Abstract: Status signals allow competitors to assess each other’s resource holding potential and reduce the occurrence of physical fights. Because status signals function to mediate competition over resources, a change in the strength of competition may… read more here.
Keywords: status; status signaling; signaling system; high competition ... See more keywords