Details:

Journal Title:
Aquaculture Research
Personal Author:
Sipos, Michael J. ; Lipscomb, Taylor N. ; Wood, Amy L. ; Ramee, Shane W. ; Watson, Craig A. ; ... More +
Sipos, Michael J. ; Lipscomb, Taylor N. ; Wood, Amy L. ; Ramee, Shane W. ; Watson, Craig A. ; DiMaggio, Matthew A. Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research) ; Sea Grant
OAR (Oceanic and Atmospheric Research) ; Sea Grant Less -
Sea Grant Program:
FLSGP (Florida Sea Grant)
Description:
The administration of exogenous hormones for induction spawning of captive fish is a common practice throughout the finfish aquaculture industry. Induced spawning protocols for ornamental cyprinids commonly rely on sGnRH IIIa, commercially available as Ovaprim. In this study, the efficacy of an alternative spawning aid, cGnRH IIa, was evaluated relative to Ovaprim, in two commonly cultured ornamental Cyprinids: the Redtail Sharkminnow Epalzeorhynchos bicolor and the Rainbow Shark E. frenatum. Broodstock of each species were injected with either a positive control (0.5 µl/g Ovaprim), a negative control (propylene glycol) or one of three doses of cGnRH IIa (50, 100, or 200 µg/kg). Following spawning aid injection, ovulation success, fecundity, fertilization success, embryo diameter, hatch success and larval notochord length were evaluated. Ovulation success (82 ± 8%) was statistically similar to the positive control group for all experimental doses of cGnRH IIa in E. bicolor, while 50 and 100 µg/kg cGnRH IIa doses resulted in significantly higher ovulation success (100.0% and 83.0% respectively) than the positive control (17.0%) in E. frenatum. All other parameters did not vary significantly among treatments. These results indicate cGnRH IIa can be successfully used as a spawning aid in both species.
Keywords:
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Fishes Induced Spawning Ornamental Fishes CGnRH IIa Epalzeorhynchos Bicolor Epalzeorhynchos Frenatum
Source:
Aquac Res. 2020; 51: 232– 241
DOI:
https://doi.org/10.1111/are.14369
Document Type:
Journal Article
Rights Information:
Accepted Manuscript
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:e68553f931c77e289e6e6970a8314431cc2e6cf2f38795e463d0159e7ed57fdc
Download URL:
https://repository.library.noaa.gov/view/noaa/41867/noaa_41867_DS1.pdf
File Type:

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