@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}
}
@article {7895,
	title = {What is the best combination of modalities of twelve environmental, feeding and populational factors to improve pikeperch larval rearing in recirculating aquaculture systems?},
	journal = {Aquaculture Reports},
	volume = {17},
	year = {2020},
	month = {Jan-07-2020},
	pages = {100337},
	abstract = {Pikeperch (Sander lucioperca) has a high potential for inland aquaculture diversification in Europe. Bottlenecks (i.e. low survival, cannibalism and deformity rates) hamper further expansion of pikeperch culture, because of the weak production performances at the nursery level. To improve the production of pikeperch juveniles under recirculation system we used a pilot scale larval rearing system (700 L tanks) and multifactorial designs. Three successive larval rearing trials (duration: 35-49 days) were conducted to identify the best combination of en- vironmental, feeding and population factors. Considering the main significant effects observed on survival, growth, swim bladder inflation rates and biomass gain, a favourable combination of twelve factor (F) modalities was proposed (F1- initial density: 100 larvae.L-1, F2- no sorting of fish jumper, F3- no sibling population, F4- eggs from large females, F5- discontinuous feeding, F6- no co-feeding, F7- light intensity: 50 lx, F8- beginning of the weaning at 16 dph (days post-hatching), F9- weaning duration: 9 days, F10- water renewal rate of 100 \% per hour, F11- tank cleaning during morning and F12- tank bottom-up water current). A final validation step was realized over a last trial (seven replicates, duration: 49 days), and validated with the best productive results obtained over the global experimental period (2015-2018). These results were: a final body weight of 815.64 {\textpm} 95.34 mg, a survival rate of 16.9 {\textpm} 1.7 \%, a specific growth rate of 15.1 {\textpm} 5.9 \%.d-1, a final fish biomass of 9.55{\textpm}0.23 kg, a swim bladder inflation rate of 92.6{\textpm}3.2 \% and a food conversion rate of 0.65 {\textpm} 0.02 (dry food). The final stocking density was 13.6 kg.m-3\&nbsp;of rearing volume. Authors were able to validate and provide a reliable basic protocol for pikeperch larval rearing using recirculating units.},
	keywords = {early life stages, fish farming, multifactorial design, recirculating aquaculture system, Sander lucioperca},
	issn = {23525134},
	doi = {10.1016/j.aqrep.2020.100337},
	url = {https://linkinghub.elsevier.com/retrieve/pii/S2352513419304983},
	author = {Tatiana Colchen and Gisbert, E. and Krauss, D. and Ledor{\'e}, Y. and Pasquet, A. and Fontaine, P.}
}
