Species Card of Copepod
Calanoida ( Order )
    Metridinidae ( Family )
        Metridia ( Genus )
Metridia boecki  Giesbrecht, 1889   (F, ?M)
Syn.: Metridia curticauda : Sars, 1920 c (p.10);
? Metridia sp. Esterly, 1924 (p.96);
no M. boecki : Sars, 1925 (p.199, figs.F); Jespersen, 1934 (p.100); 1939 (p.68)
Ref.:
Giesbrecht, 1892 (p.340, 346, figs.F); Giesbrecht & Schmeil, 1898 (p.107); Esterly, 1905 (p.178, fig.F); A. Scott, 1909 (p.120, figs.F); Sewell, 1932 (p.247, fig.F); Farran, 1946 (p.215, Rem.); Davis, 1949 (p.49: Rem.); Brodsky, 1950 (1967) (part., p.296, fig. Ind, non figs. Sars); Grice & Hulsemann, 1965 (p.244,
Rem.); 1967 (p.17, 28, Descr.M, figs.M)
Species Metridia boecki - Plate 1 of morphological figuresissued from : G.D. Grice & K. Huisemann in Proc. U.S. natn. Mus., 1967, 122 (3583). [p.55, Figs.130-133].
Male (from Indian Ocean): 130, habitus (dorsal); 131, idem (lateral right side); 132, 5th thoracic segment and urosome (lateral right side); 133, P5.

Nota: Head and 1st thoracic segment fused, 4th and 5th fused. Posterior lateral corner of 5th thoracic segment with small protuberance. A1 reaches to end of 2nd abdominal segment. Segment 1 of left P1 with pubescent swelling.


Species Metridia boecki - Plate 2 of morphological figuresIssued from : R.B.S. Sewell in Mem. Indian Mus., 1932, X (continued). [p.248, Fig.87, B].
Female (from Laccadive Sea): B, habitus, lateral right side (arrangement of cutaneous pores).


Species Metridia boecki - Plate 3 of morphological figuresissued from : A. Scott in Siboga-Expedition, 1909, XIX a. [Plate XXXVII, Figs.12-14].
Female (from Indonesia-Malaysia): 12, habitus (dorsal); 13, P2 (hooks on basal segment of endopodite); 14, P5.

Nota: Caudal rami as long as the anal segment. P5 3-segmented attached to a basal part.


Species Metridia boecki - Plate 4 of morphological figuresissued from : C.O. Esterly in Univ. Calif. Publs. Zool., 1905, 2 (4). [p.178, Fig.35, d].
Female (from San Diego Region): d, P5.

Nota: Caudal rami as long as the 5th abdominal segment, and twice as long as broad. A1 reach a little beyond the posterior border of the thorax. P5 4-segmented.


Species Metridia boecki - Plate 5 of morphological figuresIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.33, Fig.8].
Female: 8, A1 (proximal segments).


Species Metridia boecki - Plate 6 of morphological figuresIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.33, Figs.31, 37].
Female: 31, urosome (ventral); 37, 5th thoracic segment and genital gegment (lateral).


Species Metridia boecki - Plate 7 of morphological figuresIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. - Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.33, Fig.19].
Female: 19, P5.


Species Metridia boecki - Plate 8 of morphological figuresIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. - Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.32, Fig.8].
Female: 8, exopodal segment 1 of P2 (anterior view).

Compl. Ref.:
Sewell, 1948 (p.526, 546, 549, 557, 567); C.B. Wilson, 1950 (p.263); Fagetti, 1962 (p.26); De Decker & Mombeck, 1964 (p.13); in CalCOFI regional list (MDO, Nov. 2013; M. Ohman, comm. pers.)
NZ: 4

Distribution map of Metridia boecki by geographical zones
Loc:
South Africa (E), SW Indian, Laccadive Is., Indonesia-Malaysia, San Diego, Pacif. (Costa Rica: Punta Arenas), off Peru
N: 9
Lg.:
(46) F: 2,65; (67) M: 2,01-1,95; (142) F: 2,5; {F: 2,50-2,65; M: 1,95-2,01}

The mean female size is 2.575 mm (n = 2), and the mean male size is 1.980 mm (n = 2). The size ratio (male : female) is about 0.77.
Rem.: Grice & Hulsemann (1967, p.28) ascribe the form (M) without certitude to M. boecki, differ slightly from M. discreta.
The females resemble Metridia lucens females.
Last update : 07/12/2020
    to add your remark
  

 Any use of this site for a publication will be mentioned with the following reference :

Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2022. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed June 29, 2022]

© copyright 2005-2022 Sorbonne University, CNRS

Webmaster
CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
Sorbonne Université

 

Version française
English version

 

Search

On the WEB of CNRS

 


Marine Planktonic Copepods

Marine Planktonic Copepods

 

Imprimer Contact Accueil Plan du site Accès restreint Retour Une du Labo Imprimer Contact Plan du site Crédits Téléchargez les Plug-Ins