Sequence analysis of somatolactin from Cichlasoma dimerus SL and its relation with MCH and GnRH system

CANEPA M; POZZI A; CARCAGNO A; MAGGESE MC; VISSIO PG

Saint Malo, Francia

Congreso; 8th International Symposium on Reproductive Physiology of Fish; 2007

Universidad de Rennés

There is increasing evidence that somatolactin (SL) is a multifunctional hormone. In Cichlasoma dimerus, a Southamerican cichlid fish that shows dramatic changes in body coloration during sexual activation, we found clear evidence of a  possible involvement of SL together with melanocyte stimulating hormone (MSH) and  melanin concentrating hormone (MCH), in background colour adaptation. However, there is scarce information on the regulation of SL release. This study is focused on the relation between SL and the neuropeptides MCH and GnRH. In addition, we report the characterization of partial C dimerus SL (cdSL) cDNA.