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Calanoida ( Order ) |
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Arietelloidea ( Superfamily ) |
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Heterorhabdidae ( Family ) |
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Mesorhabdus ( Genus ) |
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Mesorhabdus paragracilis Park, 2000 (F,M) | |
| | | | | | | Ref.: | | | Park, 2000 (p.34, figs.F,M) |  issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.167, Fig.15]. Female (from 15°35'N, 98°10'W): a, habitus (left side); b, c, urosome (left, dorsal, respectively); d, forehead (left); e, f, genital somite (left, ventral, respectively); g, first segment of left Mx2 (posterior); h, right Mxp (anterior).
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 issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.168, Fig.16]. Female: a, P1 (anterior); b, P2 (anterior); c, exopod of P3 (anterior); d, exopod of P4 (anterior); e, P5 (anterior). Male: f, P5 (anterior); g, h, exopod of right P5 (anterior, posterior, respectively); i, exopod of left P5 (posterior).
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 Mesorhabdus paragracilis female: 1 - Genital somite without spinules along posterior margin; oral cone with low anterior labral lobe; Coxa of Mxp not with 1+2+3 setae. 2 -Coxa of Mxp with 1+2+2 setae; endopod of Mx1 with 4 setae, exopod with 6+4 setae; Mx2 normally with 6 setae on 1st lobe and 3 setae on 2nd lobe; dorsally, caudal ramus without a large pore close to posterior end. 3 - Dorsally, posterolateral corners of prosome diverging; Mx2 with 2 setae on 2nd lobe; 1st exopodal segment of P1 conspicuously bulging. 4 - Dorsally, anal segment with 1 pore on each side; caudal ramus without pores (Fig.15-c).
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 Mesorhabdus paragracilis male: 1 - In right P5, 2nd exopodal segment with medial projection at distal end of segment. 2 - Mx1 with 4 setae on endopod and 6+4 seta on exopod; dorsally, caudal ramus without pores on posterior half. 3 - Dorsally, caudal ramus without pores; anteriorly, cosa of P5 with a single pore (Fig.16-f).
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Distribution map of Mesorhabdus paragracilis by geographical zones
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| | | | | | | Loc: | | | SE Atlant. (between 30°S-32°S), SW Indian (35°S, 60°E), off E New Guinea, E Pacif., off S Baja California, W America (west coast) | | | | N: | 1 | | | | Lg.: | | | (824) F: 5,25-4,41; M: 5,5-4,36; {F: 4,41-5,25; M: 4,36-5,50} | | | | Rem.: | Most probably in the deep layers.
Distinguished of M. gracilis by: 1/ Caudal ramus without pores on dorsal surface; 2/ Mx1 with 4 setae on endopod and 6 large lateral setae on exopod; 3/ Mx2 with only 2 setae on 2nd lobe; 4/ Coxa of Mxp with 1+2+2 relatively well-developed setae. | | | Last update : 17/01/2015 | |
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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., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed April 26, 2024] © copyright 2005-2024 Sorbonne University, CNRS
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