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Calanoida ( Order ) |
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Clausocalanoidea ( Superfamily ) |
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Aetideidae ( Family ) |
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Chiridiella ( Genus ) |
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Chiridiella chainae Grice, 1969 (F) | |
| | | | | | | Ref.: | | | Grice, 1969 a (p.446, Descr.F, figs.F); Markhaseva, 1996 (p.93, figs.F) |  issued from : G.D. Grice in Bull. mar. Sc., 1969, 19 (2). [p.447, Figs. 1-15]. Female (from 20°40'N, 84°26'W): 1, habitus (lateral right side); 2, A1 (segments 1-14); 3, A1 (segments 15-18); 4, A1 (segments 19-23); 5, A2; 6, Md (mandibular palp); 7, Md (cutting edge of mandibular blade); 8, Mx1; 9, Mx2; 10, basal portion of Mxp; 11, distal portion of Mxp; 12, P1; 13, P2; 14, P3; 15, P4. Nota: Cephalothorax about 4 times length of urosome. Head weakly fused with 1st thoracic segment, 4th and 5th fused. Posterolateral margin of cephalothorax somewhat truncatedUrosome 4-segmented, genital segment protruded ventrally. A1 extends slightly beyond caudal rami. Gnathobase of Mx1 large, exopod absent. Mx2 with 5 lobes, the first four each bearing a large and a small seta; the distal lobe has, in addition to a large and a small seta, 2 fine setae.
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 issued from : G.A. Deevey in Bull. Mar. Sc., 1974, 24 (2). [p.466, Fig.16]. Female (from 32°10'N, 64°30'W): a, habitus (lateral); b, Mx2; c, P4; d, P1; e, Mx1; f, Mxp (endopod setae not shown). Scale at lower left for part a; at lower right for parts b-f. Scales in mm.
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 issued from : G.A. Deevey in Bull. Mar. Sc., 1974, 24 (2). [p.459, Fig.11, c]. Female: c, habitus (dorsal). Scale in mm.
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 Issued from : E.L. in Proc. Zool; Inst. RAN, 1996, 268. [p.95, Fig.70]. After Grice, 1969. Female: Mx2.
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 Chiridiella chainae female: 1 - Mx2 with 5 endites. 2 - Mx2 not strongly modified in comparison with typical. Setation first-fifth endites nearly of the same size. 3 - Endopod of P1 without external lobe. 4 - Exopod of P1 with 1 external spine.
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 Chiridiella chainae female ; 1 - Mx2 lobes without spines arranged as pincers. 2 - 3rd, 4th and 5th lobes of Mx2 with enlarged hooklike spines . 4 - A1 longer than body, reaching just beyond the caudal rami. 5 - Cephalothorax around 4 times length of urosome. 6 - P1 exopod with 1 edge spine.
| | | | | Compl. Ref.: | | | Deevey & Brooks, 1977 (p.256, tab.2, Station "S"); Suarez-Morales & Gasca, 1998 a (p107) | | | | NZ: | 1 | | |
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Distribution map of Chiridiella chainae by geographical zones
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| | | | Loc: | | | Caribbean Sea, Sargasso Sea (off Bermuda: Station "S" : 32°10'N, 64°30'W; | | | | N: | 3 | | | | Lg.: | | | (225) F: 3,56; {F: 3,56} | | | | Rem.: | meso & bathypelagic. Sargasso Sea: 500-1000 m Deevey & Brooks, 1977, station "S");
This species resembles C. brachydactyla Sars, 1907, and C. subaequalis Grice & Hulsemann, 1965, but these two species have an exopod on Mx1.
For Deevey (1974, p.465) the female from off Bermuda agrees with Grice’s description, although the endopods of legs 3 and 4 were 2-segmented (1st two segments not being completely separated). Mx2 is of the btachydactyla type, but more modified and reduced and represents an intermediate stage between the brachydactyla and macrodactyla types. | | | Last update : 02/09/2021 | |
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 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., 2005-2025. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed January 23, 2025] © copyright 2005-2025 Sorbonne University, CNRS
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