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Seasonal occurrence and abundance of larval and juvenile fishes in a Philippine surf zone
Kohno, H.; Kato, M.; Taki, Y. (1999). Seasonal occurrence and abundance of larval and juvenile fishes in a Philippine surf zone. La Mer 36(3): 101-109
In: La Mer = Umi. Société Franco-Japonaise d'Océanographie: Tokyo. ISSN 0503-1540, more
Peer reviewed article  

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  • Kohno, H.
  • Kato, M.
  • Taki, Y.

    Larval and juvenile fishes, collected by a milkfish fry sweeper from the surf zone offPanay Island, Philippines, from May 1986 to September 1987, numbered 18,282individuals, representing 38 families of 13 orders, with 13 specimens unidentified.The most abundant taxon was Ambassis spp. (8,216 individuals, accounting for44.94% of the total), followed by Sillago sihama (3,490 ind., 19.09%). Threeoccurrence patterns were apparent: year-round (e.g., Ambassis spp., Gerres sp.1and 2), dry-season only (Sillago aeolus, Gerres sp.3) and rainy-season only (Chanoschanos, Lates calcarifer). Although no clear trend in seasonal abundance(represented by number of individuals per day) was obvious, more species wererepresented during dry-season months, generally from November to April, thanduring the rainy season. The cluster analyses based on the similarity index ofJaccard's coefficient of community (species' composition only) and Pianka's alpha-index (species' composition and abundance) between each month indicated that fishassemblages in the dry season were relatively stable, those in the rainy season beingmore changeable. A more or less drastic change in fish assemblages was apparentduring seasonal transitions, based on the similarity indices between consecutivemonths.

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