Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

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

Abstract

Two-yr-old ♂ and ♀ bighead carp stocked in floating cages were sampled at monthly intervals from July 1985 to July 1986, and examined for sexual maturity. The percentage reaching sexual maturity varied among months from 3 to 94 in ♀♀ and from 0 to 82 in ♂♂. For both sexes, the highest percentage of sexual maturity was in Mar. The percentage reaching sexual maturity was positively correlated with the inorganic turbidity and negatively correlated with chlorinity of the bay.