NOVEL SEQUENCES FOR THE CONTROL OF REPRODUCTION IN FISH

摘要

The present invention relates to novel peptide sequences, compositions and methods for controlling fish reproduction. More particularly, the invention provides novel Neurokinin B peptides NKF and NKB and analogues thereof that regulate reproduction in fish. The invention further provides preprohormone thereof comprising at least one of a first peptide fragment of the amino acid sequence X1-X2-X3-X4-X5-X6-Asp7-X8-Phe9-Val10-X11-Leu12-Met13 and a second peptide fragment of the amino acid sequence of Glu1-Met2-His3-Asp4-Ile5-Phe6-Val7-Gly8-Leu9-Met10 and variants thereof, nucleic acid sequences and novel fish NKB receptors.