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Effects of unilateral eyestalk ablation on growth and reproductive parameters in wild and pond-reared Penaeus monodon (Fabricius) broodstock.

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Date
1991
Author
Tan-Fermin, J.D.
Page views
1,326
Subject
animal physiology ASFA
eyestalk extirpation ASFA
growth ASFA
marine crustaceans ASFA
sexual maturity ASFA
shrimp culture ASFA
Penaeus monodon AGROVOC
Taxonomic term
Penaeus monodon GBIF
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Abstract
Effects of unilateral eyestalk ablation on wild and pond-reared Penaeus monodon during ovarian maturation were determined by examining the growth (e.g., carapace length, body length, body weight) and reproductive (e.g., gonad weight, gonadosomatic index (GSI), average and maximum oocyte diameter) parameters to compare their reproductive potential. Growth parameters were similar in the wild unablated and wild ablated prawns from the immature or previtellogenic (P) to mature or cortical rod (C) stages but increased during the immature (P) to maturing or vitellogenic (V) stages in the pond ablated prawns. During stage C, gonad weight was highest in the wild unablated group while GSI, average and maximum oocyte diameter was similar in the three groups. After spawning (stage S), gonad weight was similar in all groups but GSI, average and maximum oocyte diameter were higher in the pond ablated prawns than in the wild unablated and wild ablated groups. Changes in growth and reproductive parameters at various stages of maturation suggest that reproductive performance successively decreased in the wild unablated, wild ablated and pond ablated P. monodon.
URI
http://hdl.handle.net/10862/1361
Suggested Citation
Tan-Fermin, J. (1991). Effects of unilateral eyestalk ablation on growth and reproductive parameters in wild and pond-reared Penaeus monodon (Fabricius) broodstock. The Philippine Scientist, 28, 55-64. http://hdl.handle.net/10862/1361
Type
Article
ISSN
0079-1466
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  • Journal Articles [1162]

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