In infrapopulations of helminth parasites, density-dependent effects, through some form of intra- and interspecific competition, play an important role in shaping and regulating the infrapopulations. The mechanisms responsible for these processes have often been observed in laboratory studies and rarely studied under natural conditions. Here, 24 natural infrapopulations (77-447 individuals) of ...

Abstract Macroalgal removal is a critical ecosystem function yet few studies have considered its temporal variability, especially on impacted reefs with limited herbivorous fish biodiversity. To address this, we quantified macroalgal and mass-standardised bite rates of fishes monthly from July 2016 to June 2017 using series transplanted Sargassum ilicifolium assays underwater video cameras thre...

0003-3472 2010 The Association for the Study of A doi:10.1016/j.anbehav.2010.10.019 Lateralization is a fundamental principle in the organization of brain and behaviour in humans and nonhuman animals. To what extent lateralization is, in addition to genetic factors, under the influence of testosterone, which would also explain sex differences in laterality, is the topic of a long-standing debat...

In the marine environment, fish contribute to key ecological processes such as controlling food-webs through top-down impacts, especially on algae. To date, assessment of grazing activity has mostly been performed using short-term (<1 h) censuses by divers or remote cameras which do not allow estimating variability rate within and between days. However, understanding temporal variation hence co...