Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Scolecitrichidae ( Family )
            Brodskius ( Genus )
Brodskius paululus  (Park, 1970)   (F, ?M)
Syn.: no Amallothrix robustipes Grice & Hulsemann, 1965 (p.239, figs.F);
Xanthocalanus paululus Park, 1970 (p.497, Descr.F, figs.F); Bradford, 1973 (p.147, Rem.); Roe, 1975 (p.364, figs.F, ?M, Rem.); Bradford & al., 1983 (p.127, Rem.); Suarez-Morales & Gasca, 1998 a (p.110)
Ref.:
Markhaseva & Ferrari, 2005 a (p.124, figs.F, tab.1, Rem.)
Species Brodskius paululus - Plate 1 of morphological figuresIssued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.495, Figs.89-90]. As Xanthocalanus paululus.
Female (from G. of Mexico): 89, habitus (dorsal); 90, idem (lateral left side).
Nota: Head and 1st thoracic segment separate, 4th and 5th separate.


Species Brodskius paululus - Plate 2 of morphological figuresIssued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.496, Figs.91-102]. As .
Female: 91, rostrum (anterior view); 92, A2; 93, Md; 94, Md (masticatory edge); 95, Mx1; 96, Mx2; 97, Mxp; 98, P1 (anterior); 99, P2 (posterior); 100, P3 (posterior); 101, P4 (posterior); 102, P5.
Nota: Head and 1st thoracic segment separate, 4th and 5th separate. Exopod of A2 6-segmented. Mx1 with 11 setae on basis, exopod with 2 setae. Mx2: distal portion with 8 setae (5 long and plumose).


Species Brodskius paululus - Plate 3 of morphological figuresissued from : E.L. Markhaseva & F.D. Ferrari in Invert. Zool., 2005, 2 (2). [p.123, Fig.6].
Female (from holotype slide): A, Md (gnathobase; posterior); B, Mx2 (sensory setae on distal endite of basis + ramus); C, Mx1 (proximal and distal endite of basis, endopod and exopod; posterior).
Scale bars: 0.1 mm.


Species Brodskius paululus - Plate 4 of morphological figuresissued from : E.L. Markhaseva & F.D. Ferrari in Invert. Zool., 2005, 2 (2). [p.121, Table 1].
Brodskius paululus (Selected character states of species included in Brodskius gen. n.).

Ce = cephalosome; Mn = mandible; Pd = pediger segment.


Species Brodskius paululus - Plate 5 of morphological figuresissued from : E.L. Markhaseva & F.D. Ferrari in Invert. Zool., 2005, 2 (2). [p.122, Table 1 (contituing)].
Brodskius paululus (Selected character states of species included in Brodskius gen. n.).
Ri = endopod; Re = exopod.


Species Brodskius paululus - Plate 6 of morphological figuresissued from : H.S.J. Roe in Bull. British Mus. (Natural History) Zool., London, 1975, 28 (7). [p.366, Fig.32]. As 'Xanthocalanus' paululus
Female (from Cape Verde Islands): a, habitus (dorsal); b, head (left lateral side); c, last thoracic segment and urosome (left lateral side); d, A1; e, A2; f, Md; g, Mx1; h, Mx2; i, Mxp; j, P1; k, P2; l, P3; m, P4; n, P5.

Male: o, habitus (dorsal); p, last thoracic segment and urosome (left lateral side); q, P5; r, P5 (exopodite segments 2-3 left leg).

Bar scale 0.1 mm unless indicated.


Species Brodskius paululus - Plate 7 of morphological figuresissued from : H.S.J. Roe in Bull. British Mus. (Natural History) Zool., London, 1975, 28 (7). [p.366, Fig.32]. As 'Xanthocalanus' paululus. With doubt.

Male (Cape Verde Islands): o, habitus (dorsal); p, last thoracic segment and urosome (left lateral side); q, P5; r, P5 (exopodite segments 2-3 left leg).

Bar scale 0.1 mm unless indicated.

NZ: 2

Distribution map of Brodskius paululus by geographical zones
Loc:
Caribbean Sea, G. of Mexico, Cape Verde Is.
N: 3
Lg.:
(8) F: 1,29-1,14; ?M: 1,37-1,29; (88) F: 1,28-1,22; {F: 1,14-1,29; ?M: 1,29-1,37}
Rem.: According to Roe (1975, p.365) 'X. paululus' is very similar to Amallothrix robustipes Grice & Hulsemann, 1965; the author has examined the type of this latter species in the British Museum (Natural History). The shape of the cephalothorax is the same as that of the present females but unfortunately the slides of the appendages is not in the Museum's collection. Mx1 is very similar to that of the present species, and the swimming legs are apparently identical except for the absence of small spines on the endopod of P2. P5 differs in having the terminal spine longer than the internal spine. Without a description of the remaining mouthparts, especially Mx2, it is impssible to ascertain whether or not A. robustipes and 'X. paululus' are synonymus.
At the moment it is not possible to place this species into any of the four families which have sensory setae on the endopod of Mx2. Bradford (1973) was unable to assign either A. robustipes or X. paululus to either the Phaennidae or the Scolecitrichidae. This species differs from both these families (as difined by Bradford) in the following respects: (1) the endopod of Mx2 apparently lacks any brush-like setae; (2) there are no large spines on the posterior surfaces of the swimming legs; (3) the male P5 are biramous and have symmetrical basipodites. The presence of enlarged setae on lobes 4 and 5 of the Mx2 further distinguishes it from the Scolecitrichidae. It is distinct from the Diaixidae and Tharybidae in having reduced mouthparts in the male.
Markhaseva & Ferrari (2005, p.124) transfer Xanthocalanus paululus in the new genus Brodskius in Scolecitrichidae family. A doubt subsists concerning the male in Roe (1975).
Female: endopodite of Mx2 with 6 setae of which at least two are plumose but none, as far as can be seen, are brush-like.
Male: The endopod of Mx2 has 6 sensory setae, all of which are, apparently, worm-like.
Last update : 30/12/2014
    to add your remark
  

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

Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2019. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed July 23, 2019]

© copyright 2005-2019 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