Planktonic Ostracods of the North Atlantic Off Barbados
Abstract:Some 46 species of ostracods have been found in samples collected biweekly from 1967–1969 in 0–400-m hauls at Station 2B off the west coast of Barbados and in other plankton tows from varying depths made in the vicinity of Barbados. The commonest species within the upper 400 m were Archiconchoecia striata, Halocypris inflata, Conchoecia curta, C. magna, C. microprocera, C. procera, C. oblonga, C. parthenoda, and C. spinirostris. The total numbers of ostracods caught during the year gave a mean of 5.9/m3 or 2,360/m2 of sea surface. Highest numbers of 23.9/m3 were taken in April 1968; numbers were minimal in December 1967. The most abundant species were C. spinirostris with a mean of 653/1,000 m3, C. curta (mean 654/1,000 m3), the procera species together (mean 1,081/1,000 m3), A. striata (mean 348/1,000 m3), and C. oblonga (mean 219/1,000 m3). At Station 2B the total number of species recorded per sample ranged from 3 to 23, but usually 12–20 species were present in the 0–400-m hauls. A new subspecies of Euconchoecia chierchiae which lacks a point on the left rostrum and a posterodorsal point on the right shell is described, as is the female of Conchoecia allotherium Müller, which hitherto it has not been possible to differentiate from the female of C. oblonga.
Document Type: Research Article
Publication date: April 1, 1982
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