Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Scolecitrichidae ( Family )
            Bradfordiella ( Genus )
Bradfordiella fowleri  (Farran, 1926)   (F,M)
Syn.: " Scolecithricella ” fowleri : Bradford & al, 1983 (p.106, figs.F,M); Guangshan & Honglin, 1984 (p.118, tab., Rem.: p.165); Shih & Young, 1995 (p.73);
Scolecithrix fowleri Farran, 1926 (p.261, Descr.F, figs.F); Sewell, 1948 (p.502); Grice & Hulsemann, 1965 (p.224, 242, figs.F, Rem.); 1967 (p.17, 28, figs.M); Bradford, 1973 (p.146, Rem.); Bradford & al., 1983 (p.104, Rem.); Vives & Shmeleva, 2007 (p.803, figs.F,M, Rem.);
Ref. compl.: Roe, 1972 (p.277, tabl.1, tabl.2); 1972 b (p.542); Deevey & Brooks, 1977 (p.256, tab.2, Station "S"); Vives, 1982 (p.292); Kovalev & Shmeleva, 1982, p.84); Lozano Soldevilla & al., 1988 (p.59); Williamson & McGowan, 2010 (p.273, Table III, Pacific central gyres: N & S)
Andronov, 2007 (p.628, 632); Markhaseva, Laakmann & Renz, 2013 (p.21, Rem.)
Species Bradfordiella fowleri - Plate 1 of morphological figuresissued from : G.D. Grice & K. Huisemann in Proc. U.S. natn. Mus., 1967, 122 (3583). [p.55, Figs.126-129]. As Scolecithrix fowleri.
Male (from Indian Ocean): 126, habitus (lateral right side); 127, P5; 128, Mx1; 129, Mx2.

Nota: Head and 1st thoracic segment fused, 4th and 5th separate; large, ventrally directed rostrum. Right P5 with 3-segmented exopod and 2-segmented endopod; left P5 with 3-segmented exopod and 1-segmented endopod.

Species Bradfordiella fowleri - Plate 2 of morphological figuresissued from : G.D. Grice & K. Hulsemann in J. Zool., 1965, 146. [p.243, Fig.16, a-d]. As Scolecithrix fowleri.
Female (from NE Atlant.): a, habitus (lateral left side); b, Mx2; c, Mx2 (distal end, other side); d, Mx2 (detail of long spine-like seta).
Nota: The intact Mx2 of our specimens have no sensory structures.

Species Bradfordiella fowleri - Plate 3 of morphological figuresissued from : G.P. Farran in J. Linn. Soc., Zool., 1926, 36. [Pl.7, Figs.7-12]. As Scolecithrix fowleri.
Female (from Bay of Biscay): 7-8, habitus (lateral and dorsal, respectively); 9, A1; 10, A2; 11, Mx1; 12, Mxp.
Abdominal segments in the proportion 18:10:8:6.
Nota: Caudal rami about as wide as long and equal to the anal segment.
Rostrum long and slender, consisting of a narrow flattened plate tapered to a fine point and with a median groove from the base to the apex.
A1 very short, 16-segmented ( segments 7-12, 20-22, and 23-24 fused; segments 3-12 broad, with a thin crest-like serrated anterior margin); not reaching to the thoracic segment 3.
Endopod of A2 slightly longer than exopod.
Cutting edge of Md with 4 strong teet; endopod and exopod about equal.
Mx1: inner lobe 1 with 9 or more stout spines, inner lobes 2 and 3 absent, outer lobe 1 enlarged, with 7 long densely plumose setae and 2 small setae, endopod and exopod much reduced, the former with 2, the latter with 3 setae
Mx2 with 5 lobes, lobes 1 to 3 each with a pair of setae, lobe 4 with 2 strong setae and 1 slender, lobe 5 produced without visible articulation into 1 single strong seta, the setae on remaining setae are large and subequal, and each furnished with a double row of strong clos-set serrations; terminal segment (endopod) broken, probably urnished with vermiform or amallae-bearing setae.
Mxp: 1st segment equal to the 2nd and 3rd together, and the three succeeding segments gradually decreasing in size; the setae are scanty and comparatively short; 1st segment with 1 long and 1 short distal seta, the 2nd with 1 short median seta and 1 longer terminal, the remaining segments have about 3 setae each, the longest being about equal to the length of the 1st segment.

Species Bradfordiella fowleri - Plate 4 of morphological figuresissued from : G.P. Farran in J. Linn. Soc., Zool., 1926, 36. [Pl.8, Figs.1-3]. As Scolecithrix fowleri.
Female: 1, P2; 2, P3; 3, P5.

Compl. Ref.:
Belmonte, 2018 (p.273, Table I: Italian zones)
NZ: 6

Distribution map of Bradfordiella fowleri by geographical zones
Canary Is., Bay of Biscay, off Bermuda: Station ‘’ S’’ (32°10’N, 64°30’W), Medit. (E Basin, S Adriatic Sea), W Indian, China Seas (South China Sea), Pacif. (W equatorial), Pacific (central gyres: N & S)
N: 10
(9) M: 1,6; (38) F: 2,04; (67) M: 1,62; (199) F: 1,9-1,44; M: 1,9; {F: 1,44-2,04; M: 1,60-1,90}
Rem.: Meso-bathypelagic. Sargasso Sea: 500-2000 m (Deevey & Brooks, 1977, Station "S");
Probable in the group " Scolecithrix fowleri ".
For Andronov (2007, p.628, 632) this species fits in the genus Bradfordiella.
For Andronov (2007) Scolecithrix fowleri is transfered in the genus Bradfordiella.
Last update : 14/06/2022
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed April 23, 2024]

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