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Year-round sexual maturation of bighead carp Aristichthys nobilis (Richardson) reared in floating cages in Laguna de Bay (Philippines).

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Date
1990
Author
Fermin, A. C.
Page views
1,461
ASFA keyword
sex differences ASFA
sexual maturity ASFA
AGROVOC keyword
Philippines AGROVOC
Cyprinidae AGROVOC
Taxonomic term
Hypophthalmichthys nobilis GBIF
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Abstract
Sexual maturation in bighead carp Aristichthys nobilis reared without supplemental feeding in floating cages in Laguna de Bay was observed year-round. Percent maturation ranged from 3 to 94% in females and 0 to 82% in males from July 1985 to July 1986. High maturation rates in both sexes occurring in March 1986 were positively correlated with high inorganic turbidity in the lake. Low natural food productivity (phyto- and zooplankton) during high turbidity did not negatively affect fish growth. Fish may have depended partly on suspended particles as additional food sources when production of more suitable food (zooplankton) was low. Increased production of natural food as a result of water clearing by seawater intrusion during May to September did not enhance growth and maturation of the fish. There was a low negative correlation between chlorinity and percent maturation of both sexes.
URI
http://hdl.handle.net/10862/1310
Suggested Citation
Fermin, A. C. (1990). Year-round sexual maturation of bighead carp Aristichthys nobilis (Richardson) reared in floating cages in Laguna de Bay (Philippines). Journal of Applied Ichthyology, 6(3), 129-135. https://doi.org/10.1111/j.1439-0426.1990.tb00571.x 
DOI
10.1111/j.1439-0426.1990.tb00571.x
Type
Article
ISSN
1439-0426
Collections
  • Journal Articles [1249]


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