Open AccessEffect of 17α‐Methyltestosterone and 17α‐Hydroxyprogesterone on the Quality of White Shrimp Penaeus vannamei Spermatophores
Author(s) -
Alfaro Jorge
Publication year - 1996
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.1996.tb00634.x
Subject(s) - biology , spermatophore , shrimp , penaeus , litopenaeus , white (mutation) , fishery , hydroxyprogesterone , zoology , endocrinology , mating , gene , genetics , hormone , steroid
.— Controlled reproduction of penaeid shrimp requires a better utilization of males by sperm quality monitoring and sperm quality improvement. Spermatophores of white shrimp Penaeus vannamei were improved, in terms of increased sperm count, spermatophore weight, and a reduced incidence of sperm abnormalities by a single injection of 17α‐methyltestosterone at 0.01 or 0.1 μg/g body weight. 17α‐hydroxyprogesterone did not induce a significant improvement in spermatophore quality. These findings indicate that a steroid injection program should be evaluated as a practical way of improving spermatophore quality in commercial operations.