Review and show distribution pattern of marine fish larvae of Iranian coastal waters Persian Gulf by GIS
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AbstractThe survey of fish larva in Iranian water has done from 1995 till 2007. The aims of this study were included of identification, abundance, diversity index and distribution of fish larva in Iranian coastal waters of the Persian Gulf. In all research, sampling was done by Bongo net in day time. Totally 119006 specimen was collected and identified in 54 fish larva family from 90 stations. Gobiidae, Engraulididae ، Leiognathidae، Sparidae، Sillaginidae، Clupeidae ,Cynoglossidae، Sciaenidae were the dominate families with higher abundance. 83342 specimen was collected from Khuzestan waters( higher than others )in 27 family,26797 specimen in 52 fish larva family in Bushehr waters. The result of GIS map was shown; Clupeidae with three subfamily distributed in all Iranian waters with more abundance in summer and autumn, Sillaginidae was percent in all study area with more abundance in Bushehr waters, Gobiidae was in estuary habitat with higher abundance in Khuzestan waters in warm period, Sparidae distributed in the Persian gulf in more month of year, Engraulididae was collected from area with more abundance from Hormozgan with two spawning peaks ;spring and autumn. Cynoglossidae with higher abundance from Khuzestan waters, Leiognathidae in Khuzestan waters was in warm period and in others site in all month. Sciaenidae was in Hormozgan more than others area. Mosa Creek-Estuary in Khuzestan with homogeny habitat was attractive the family related to the shore and muddy kind family, such as: Gobiidae, Leiognathidae whereas Bushehr waters with variety of habitat; Creek-Estuary, mangrove forest, rocky coral, coral path was attractive more family with different groups such as: lutjanidae ، Cepolidae ، Apogonidae، Lethrinidae and Atherinidae that some case only recorded from Bushehr in Persian gulf. Coastal waters of Bushehr province habitat was affected of sea waves and current therefore the abundance of family lower than Khuzestan waters except in some deeper stations. Finally there are different occasions influencing on fish larvae percent, abundance and distribution of them that are include: abiotic factors (temperature, salinity, depth and clarity), habitat, adult spawning behavior, morphologic characters of coastal area, In addition, from the type and geomorphologic structure of marine – coastal area, the difference between abundance and diversity of ichthyoplankton in two main coasts group as name wave dominant (open coasts) and tide dominant 9semi closed coasts) have harmony with together and are clear.
Series : Nr42687;