Summary of Abstract Submission

Abstract Submission No. IO50-09-0020PresentationPoster


I.V. Vdodovich*1, T.N. Klimova2, F. Y. al Yamani 3

1 A.O. Kovalevsky Institute of Marine Biological Research of RAS, Russia
2 A.O. Kovalevsky Institute of Marine Biological Research of RAS, Russia
3 Kuwait Institute for Scientific Research, Kuwait, Kuwait


Ichthyoplankton of oceanic rises was studied in the three areas of the Indian Ocean in February-April 1984 (after Gordina, 1991) and in the Persian Gulf in January-October 2001. Areas with high biological productivity, zooplankton biomass and fish larvae of both ocean and neretic origin are formed in the oceanic rises. In the midwater (300 m) near the Equator rise fish larvae were indentified - 56 species of 30 families. The average abundance was up to 104 ind.100 m­3, dominated by Myctophidae larvae - 75 %. In the shallow-water rises (100 m) neritic species dominated. In the rise of the Saya de Malha Bank 78 species of fish larvae of 50 families were found, and in the Speakers Bank - 37 species of 22 families. The average abundance of fish larvae of both rises varied from 10 to 50 ind.100 m­3. The maximum number of fish larvae was observed in the upwelling area. Kuwait¿s waters are shallow, with a maximum depth of about 30 m, and the water column is generally well mixed all year-round, and it is characterized by high biological productivity. A total of 74 species from 43 families of fish larvae were collected during 2001. Both the number of fish larvae and species diversity depended on the season and hydrological conditions. Average abundance of fish larvae was more than 6000 ind.100 m­3. Gobiidae larvae were 82 % of total fish larvae abundance, and Clupeiformes - 7 %. Fish larvae of other families have been observed only in single individuals.