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Volume 41 - Number 2 - 2006
Artículo


Efficiency of co-feeding red porgy (Pagrus pagrus L.) larvae with live and compound diet

Eddie O. Aristizábal1 and Julieta Suárez1, 2 


1 Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP). Paseo V. Ocampo #1, Escollera Norte, B7602HSA, Mar del Plata, Argentina
2 Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Av. Rivadavia 1917, C1033AAJ, Buenos Aires, Argentina

 

E-mail:  eddie@inidep.edu.ar


The red porgy (Pagrus pagrus) is an important commercialandrecreationalspecieswith very good prospect for aquaculture. Because significant mortalities, the mass production of this species is limited. This paper describes three weaning strategies to investigate their effects on the survival and growth of red porgy larvae reared in laboratory: A) traditional three-step weaning (rotifers - Artemia - diet) (control); B) one-step early weaning by co-feeding (rotifers - Artemia + diet), and C) one-step direct early weaning (rotifers - diet). Sigificative differences were recorded among treatments (P<0.05). Best survival rate (45.6 ± 7.6%) and growth (7.4 ± 0.5 mm) were found in treatment B. Results indicate that co-feeding red porgy larvae with inert and live diets from day 20 after hatching is a promising weaning strategy in the hatchery of this species.

 

Key words: Growth, larval development, weaning

 

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1Laboratorio de Zooplancton, Instituto de Ciencias del Mar y Limnología,Universidad Nacional Autónoma de México. A. P. 70-305, 04510 México, D. F. México
 
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