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Notes on ovarian rematuration of ablated sugpo (prawn) Penaeus monodon Fabricius

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PrimaveraJH1977-Notes-on-ovarian-rematuration-of-ablated-Penaeus-monodon.pdf (281.6Kb) Open Access
Downloads: 183
Date
1977
Author
Primavera, Jurgenne ORCID
Borlongan, Emeterio
Page views
18,632
Subject
spawning ASFA
fecundity ASFA
sexual maturity ASFA
hatching ASFA
mortality ASFA
survival ASFA
crustacean culture ASFA
Penaeus monodon AGROVOC
Malacostraca AGROVOC
Taxonomic term
Penaeus monodon GBIF
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Abstract
To what extent spent P. monodon females can remature and spawn successive broods is an important question in terms of recycling spawners in a commercially viable operation. Corollary to this is the quantity and quality of fry from rematured females in comparison to those from first spawning. Of 347 experimental females, only 10.1% had a second spawning, and 1.4% a third spawning. To a large degree the low rate of rematuration is due to high spawner mortality - average survival period after spawning was only 6 days in a sample of 176 spawners. It took an average of 23 days after ablation for a prawn with undeveloped ovaries to mature and spawn. An ablated female may have another spawning in as little as 5 days after the previous one. Average fecundity was 180,000 eggs per second spawning, and 140,000 eggs per third spawning. The average number of eggs from first spawning ablated females was 110-120,000. Hatching rate was lower for rematuration: 44% for second spawnings, and 35% for third spawnings, as compared to 64% for first maturation.
Description
Extended abstract of the paper delivered by Mrs. Jurgenne H. Primavera at the Symposium on Reproductive Physiology of Fish, Paimpont, France, Sept. 19-21, 1977.
URI
http://hdl.handle.net/10862/2297
Suggested Citation
Primavera, J., & Borlongan, E. (1977). Notes on ovarian rematuration of ablated sugpo (prawn) Penaeus monodon Fabricius. SEAFDEC Aquaculture Department Quarterly Research Report, 1(3), 5-8. http://hdl.handle.net/10862/2297
Type
Article
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  • Quarterly Research Reports [125]

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