Open AccessINVESTIGATION OF METHODS TO SHORTEN THE INTERMOLT PERIOD IN A CRAWFISH 1
Author(s) -
Huner Jay V.,
Avault James W.
Publication year - 1977
Publication title -
proceedings of the annual meeting ‐ world mariculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0164-0399
DOI - 10.1111/j.1749-7345.1977.tb00168.x
Subject(s) - ecdysterone , moulting , eyestalk , procambarus clarkii , zoology , period (music) , biology , chemistry , anatomy , endocrinology , hormone , larva , fishery , ecology , physics , crayfish , acoustics
Subadult crawfish, Procambarus clarkii (Girard) (50–70 mm total length, the preferred bait size), were injected with ecdysial hormones and subjected to bilateral eyestalk removal to examine methods for shortening the intermolt period. Ecdysterone injection (3 μg/g) and bilateral eyestalk removal, 4 days postmolt, were both effective. Ecdysterone injection (3 μg/g) 1 day postmolt, and Molting Formulation No. 1 4 injection (20 μl/individual), 4 days postmolt, were not effective. Bilateral eyestalk removal was a better method for producing soft shell crawfish than ecdysterone injection because the crawfish molted successfully whereas most of the crawfish injected with ecdysterone (4 days postmolt) died during molt.