Oithona rostralis - Species Card - Marine Planktonic Copepods

Species Card of Copepod

Cyclopoida ( Order )	details
Oithonidae ( Family )	details
Oithona ( Genus )	details	List species for this Genus

Oithona rostralis Nishida, Tanaka & Omori, 1977 (F)

Abbreviations or symbols

Ref.:

(

List of the studied authors )

in Nishida & al., 1977 (p.145, figs.F)

Species Oithona rostralis - Plate 1 of morphological figures

Issued from : S. Nishida, O. Tanaka & M. Omori in Bull. Plankton Soc. Japan, 1977, 24 (2). [p.146, Fig.18].
Female (from Suruga Bay): a, habitus (dorsal), b, forehead (lateral); c, 5th thoracic segment; d, Md; e, Mx1; f, P1; g, P2; h, P3; i, P4.

Nota: P1-P4 setae formula (from outer setae and inner setae). P1: 1,1,2; 1,1,4. P2: 1,1,3; 1,1,5. P3: 1,0,2; 1,1,5. P4: 0,0,1; 1,1,5.
Outer seta of Exopod 3 of P4 about as long as the terminal seta.
Prosome 2.7 times as long as wide. Prosome length/urosome length = 1.13.
A1 extending to the distal margin of genital segment.

NZ:

Distribution map of Oithona rostralis by geographical zones

Loc:

(

Geographical glossary )

Japan (off Suruga Bay)

Lg.:

(

References of the authors concerning dimensions )

(155) F: 1; {F: 1,00}

Rem.:

For Nishida & al. (1977) this species is closely related to Oithona plumifera, but it can distinguished from the latter species by the shape of rostrum and the P2-P4 setae formulae.

Last update : 06/09/2015


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