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Characterization of oocyte development in hatchery-reared burbot
Citation
Foltz, JR and Jensen, NR and Polinski, MP and Ireland, SC and Cain, KD, Characterization of oocyte development in hatchery-reared burbot, North American Journal of Aquaculture, 74, (2012) pp. 408-412. ISSN 1522-2055 (2012) [Refereed Article]
Copyright Statement
Copyright 2012 American Fisheries Society
DOI: doi:10.1080/15222055.2012.676001
Abstract
Burbot Lota lota are an emerging aquaculture species. To aid in
predicting the natural and hormonal-manipulated timing of ovulation
and for ensuring maximum viability of eggs at spawning,
this study describes oocyte maturation of hatchery-reared burbot
from vitellogenesis through ovulation. At a temperature of 4°C,
visual polarization of the oil globule occurred 7–13 d preovulation.
The lack of uniformity in individual oocyte development was observed
and persisted until approximately 2 d before ovulation, at
which point complete polarizationwas observed in all oocytes and a
condensed blastomere was observed along the inner chorion. These
preliminary observations imply that implantation of gonatotropinreleasing
hormone (GnRH) decreased the final maturation stage
of oocyte development by 2–4 d and may aid in initiating the maturation
process, the induction of which appeared to be a threshold
for either a female’s progression to ovulation or nonovulation and
atresia. Although additional investigation may be needed to fully
maximize egg fertilization success and optimize timing related to
intensive spawning practices, this study lays a foundation for further investigations and provides a reference for assessing oocyte
development and predicting ovulation for this species.
Item Details
Item Type: | Refereed Article |
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Keywords: | Kootenai River, preservation, growth, stage, eggs, fish |
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Fisheries sciences |
Research Field: | Aquaculture |
Objective Division: | Animal Production and Animal Primary Products |
Objective Group: | Fisheries - aquaculture |
Objective Field: | Aquaculture crustaceans (excl. rock lobster and prawns) |
UTAS Author: | Polinski, MP (Mr Mark Polinski) |
UTAS Author: | Cain, KD (Associate Professor ken Cain) |
ID Code: | 82867 |
Year Published: | 2012 |
Web of Science® Times Cited: | 2 |
Deposited By: | NC Marine Conservation and Resource Sustainability |
Deposited On: | 2013-02-20 |
Last Modified: | 2015-02-23 |
Downloads: | 0 |
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