EFFECT OF FOOD RESTRICTION ON THE GONAD AND HEPATOPANCREAS BIOCHEMICAL COMPOSITION OF CHERAX QUADRICARINATUS FEMALES

FERNANDO CASTILLO DÍAZ; CAROLINA TROPEA; LIANE STUMPF; LAURA S. LÓPEZ GRECO

Chascomús

Jornada; XVI Jornadas Anuales de la Sociedad Argentina de Biología; 2014

The objective of the present study was to evaluate the effect of food restriction on biochemical composition of the gonad and hepatopancreas of females from the parental stock, and on the histological structure of the hepatopancreas. Three females were stocked with one male in glass aquaria (n=12) with water at 26±1°C, under continuous aeration. Each aquarium was assigned to one of the following treatments: Control and Restrictive feeding (feeding at 1.5 and 0.5% of body weight, respectively). At day 105 the animals were sacrificed and their hepatopancreas and gonads were removed. Although minor histological abnormalities were observed on the hepatopancreas of restricted females, the biochemical composition of that gland was similar between treatments. The ovaries of control females had higher lipid content, but the protein content did not differ between treatments. Based on these results, it may be possible to reduce the amount of food offered to the parental stock without affecting their nutritional state. However, this may affect the availability of reserves for subsequent spawns. PICT2012-01333,UBACYT 2011-2014 (20020100100003) y 2014-2017(20020130100186BA) and MINCYT-CAPES BR/11/21.