@article {7896,
	title = {The onset of piscivory in a freshwater fish species: analysis of behavioural and physiological traits},
	journal = {Journal of Fish Biology},
	volume = {96},
	year = {2020},
	month = {Jan-06-2020},
	pages = {1463 - 1474},
	abstract = {The onset of piscivory in fish, resulting in a shift from zooplankton or invertebrate to fish prey, was studied on pikeperch (Sander lucioperca) larvae displaying and not dis- playing piscivorous behaviour at different ages (23, 30, 37, 44 and 52 days post- hatching) using behavioural (attack, capture and swimming activity), morphological (allometry) and digestive enzymatic (trypsin,\&nbsp;α-amylase and pepsin) analyses. The shift from zooplanktonic food items (Artemia\&nbsp;nauplii) to a piscivorous diet did not occur at the same time for all individuals within the same cohort. Predation tests, conducted under controlled conditions (20C;\&nbsp;ad libitum\&nbsp;feeding), showed that some larvae attacked fish prey as early as the age of 3 weeks [11.0 {\textpm} 1.3 mm total length (TL)], whereas others did not start until the age of 6 weeks (16.6 {\textpm} 1.9 mm TL). Piscivorous individuals were bigger, with larger heads, longer tails, higher acid protease and lower alkaline protease activities, than non-piscivorous conspecifics. In conclusion, high interindividual variability in morphological and digestive system developments linked to the development of predatory abilities could induce cannibalism in fish.},
	keywords = {behavioural tests, early life stages, freshwater fish, predatory behaviour, Sander lucioperca},
	issn = {0022-1112},
	doi = {10.1111/jfb.v96.610.1111/jfb.14322},
	url = {https://onlinelibrary.wiley.com/toc/10958649/96/6},
	author = {Tatiana Colchen and Dias, Andr{\'e}a and Gisbert, Enric and Teletchea, Fabrice and Fontaine, Pascal and Pasquet, Alain}
}
