Species Card of Copepod
Calanoida ( Order )
    Diaptomoidea ( Superfamily )
        Pontellidae ( Family )
            Pontella ( Genus )
Pontella gaboonensis  T. Scott, 1894   (F,M)
Syn.: Pontella mediterranea gaboonensis T. Scott, 1894 b (p.86, figs.M, juv. F)
Giesbrecht & Schmeil, 1898 (p.144); Vervoort, 1965 (p.176, Descr.F,M, figs.F,M, Rem.: p.185); Silas & Pillai, 1973 (1976) (p.776); Bradford-Grieve & al., 1999 (p.885, 960, figs.F,M)
Species Pontella gaboonensis - Plate 1 of morphological figuresIssued from : W. Vervoort in Atlantide Report, 1965, 8. [p.177, Fig.30]
Female (from off Nigeria): a, habitus (dorsal); b, idem (lateral right side); c, forehead (dorsal); d, head (lateral); e, idem (lateral, after removal of mouth appendages); f, posterior part cephalothorax and urosome (dorsal).
Nota: Head and 1st thoracic somite almost completely fused (a weak line visible on the dorsal portion of the cephalon). Urosome 2-segmented; genital complex slightly asymmetrical (more slightly produced on the left side); anal somite partly covered (anal flap completely hidden by the genital complex). Caudal rami nearly symmetrical, the right slightly larger; each ramus has a short, densely haired appendicular seta; the internal border of the caudal rami is densely haired. A1 24-segmented.

Species Pontella gaboonensis - Plate 2 of morphological figuresIssued from : W. Vervoort in Atlantide Report, 1965, 8. [p.178, Fig.31]
Female: a, posterior part cephalothorax and urosome (lateral right side); b, idem (lateral left side); c, Mx2; d, Mxp.
Nota: Mx2 characterized by the presence of large, strongly spinulose setae on all endites; coxa and basis fused, each segment with 2 endites; the distal three endites each carry 2 strong, spinulose setae, and a smaller appendicular seta, the proximal endite with 2 large and 3 smaller spinulose setae; the single endite on the basis is coalescent with a large, spinulose seta, and 1 fine, basal seta; 4th basipodal segment distinctly separated from the basis with 1 spinulose seta; only 2 free endopodal segments, 1st with 1 spinulose seta, 2nd (apical) segment with 2 spinulose setae and 1 smaller, haired seta. Coxa of Mxp well developed, with 3 lobes, packed closely together, the proximal lobe with 2 spinulose setae, median lobe with 2 spinulose setae plus 1 small appendicular seta, distal lobe with 1 spinulose seta plus 1 appendicular seta; basis small with 1 small seta, the apical lobe is scarcely separated from the basis and has 2 setae; 5 endopodal segments with 2, 1, 12, 2, 3.1 setae, respectively; there is no external seta on the 4th segment.

Species Pontella gaboonensis - Plate 3 of morphological figuresIssued from : W. Vervoort in Atlantide Report, 1965, 8. [p.180, Fig.32]
Female: a-b, A1; c, A2; d, Md (mandibular palp); e, Md (mandibular praecoxa); f, Mx1; g, P5.
Nota: Praecoxal arthrite of Mx1 well developed, with 8 strong, spinelike setae, and 7 small spiniform setae; coxal epipodite with 9 setae (two of which are fine); coxal endite large with 3 big setae; basal endite small with 1 strong seta and 2 fine setae on the lobe; basal exite just visible with 1 seta; basipodite (4th segment) large (it may have fused with some of the endopodal segments), with three groups of 4, 2, 2 setae, respectively; a small, free endopodal segment with 5 setae; exopodite well developed with 10 setae.

Species Pontella gaboonensis - Plate 4 of morphological figuresIssued from : W. Vervoort in Atlantide Report, 1965, 8. [p.181, Fig.33]
Female: a, P1; b, P2; c, P3; d, P4.

Species Pontella gaboonensis - Plate 5 of morphological figuresIssued from : W. Vervoort in Atlantide Report, 1965, 8. [p.183, Fig.34]
Male: a, habitus (lateral right side); b, idem (dorsal); c, head (lateral); d, forehead (dorsal); e, posterior part cephalothorax and urosome (lateral right side).
Nota: Head and 1st thoracic somite completely fused, 4th and 5th partly separate. Rostral lens strongly visible in lateral view. The urosomal segments and furca in the proportional lengths 18:12:17:8:16:29 = 100.

Species Pontella gaboonensis - Plate 6 of morphological figuresIssued from : W. Vervoort in Atlantide Report, 1965, 8. [p.184, Fig.35]
Male: a, postrior part cephalothorax and urosome (dorsal); b, right A1; c, right P5; d, left P5.
Nota: A2, mouth parts and legs 1-4 as in female.

Species Pontella gaboonensis - Plate 7 of morphological figuresIssued from : J.M. Bradford-Grieve, E.L. Markhaseva, C.E.F. Rocha & B. Abiahy in South Atlantic Zooplankton, edit. D. Boltovskoy. 1999, Vol. 2, Copepoda; [p.1071, Fig. 7.393: Pontella gaboonensis]. B = basis; r = right leg; l = left leg.
Female characters (from key, p.959):
- Genital segment with sides almost parallel in dorsal view; P5 exopod without inner spines.
- Caudal rami subequal.
- Urosome of 2 somites.

Compl. Ref.:
Neto & Paiva, 1966 (p.28, Table III); Binet & al., 1972 (p.71); Dessier, 1979 (p.153, 201, 206); Diouf & Diallo, 1987 (p.260)
NZ: 1

Distribution map of Pontella gaboonensis by geographical zones
Angola (Baia Farta), Congo, G. of Guinea, Ivorian shelf, Casamance
N: 8
(16) F: 2,95-2,7; M: 2,68-2,65; (57) M: 2,5; {F: 2,70-2,95; M: 2,50-2,68}
Rem.: epiplagic.
For Vervoort (1965, p.185) the adult female differs from P. mediterranea in the stucture of the 5th thoracic somite and P5; the adult male shows differences in the structure of the clasping A1 and P5.
Occurrence in Baia Farta (Angola) at temperature: 26°7 C, and salinity: 30.70 p.1000
Last update : 19/01/2016
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2023. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed March 23, 2023]

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