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Initial characterization of embryonic development in North American burbot
Citation
Egan, JP and Johnson, RD and Anders, PJ and Cain, KD, Initial characterization of embryonic development in North American burbot, North American Journal of Aquaculture, 77, (1) pp. 37-42. ISSN 1522-2055 (2015) [Refereed Article]
Copyright Statement
Copyright American Fisheries Society 2015
DOI: doi:10.1080/15222055.2014.955156
Abstract
Declining wild populations and increasing commercial interest are encouraging development of aquaculture methods for the North American Burbot Lota lota maculosa. A current focus of Burbot aquaculture research is reducing high mortality that is typically associated with culture of Burbot embryos and larvae. However, no Burbot embryonic or larval staging systems are currently available to provide a comparative baseline for studies of these life stages. To help address this gap, we examined Burbot embryonic development from egg fertilization until the onset of the larval period at first feeding. Ontogeny was characterized using diagnostic morphological features visible with stereo microscopy. Six developmental periods were characterized (cleavage, blastula, gastrula, segmentation, swim bladder inflation, and first feeding), along with 15 developmental stages. Water temperature ranged from 3°C to 5°C for the duration of this study. Cleavage cycles were approximately 8 h/division. Segmentation began at 12 d postfertilization (DPF) and continued until first hatch at 33 DPF. First feeding was observed at 45 DPF, 12 d after first hatch. Results presented here are expected to help refine Burbot culture methodology and research efforts aimed at conservation, management, and commercial production. Future research should use additional cohorts and expose embryos to a range of culture conditions to better understand the factors governing embryonic survival and variability in the timing of events during development.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | burbot, embryonic development |
| Research Division: | Biological Sciences |
| Research Group: | Zoology |
| Research Field: | Animal Developmental and Reproductive Biology |
| Objective Division: | Environment |
| Objective Group: | Flora, Fauna and Biodiversity |
| Objective Field: | Marine Flora, Fauna and Biodiversity |
| Author: | Cain, KD (Associate Professor ken Cain) |
| ID Code: | 105906 |
| Year Published: | 2015 |
| Web of Science® Times Cited: | 1 |
| Deposited By: | IMAS Research and Education Centre |
| Deposited On: | 2016-01-20 |
| Last Modified: | 2016-09-02 |
| Downloads: | 0 |
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