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Fiche d'espèce de Copépode |
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Calanoida ( Ordre ) |
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Diaptomoidea ( Superfamille ) |
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Pseudodiaptomidae ( Famille ) |
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Pseudodiaptomus ( Genre ) |
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Pseudodiaptomus malayalus Wellershaus, 1969 (F,M) | |
| | | | | | | Syn.: | Pseudodiaptomus binghami malayalus Wellershaus, 1969 (p.262, figs.F, M); Pillai, 1976 (1980) (p.251, figs.F,M); Madhupratap & Haridas, 1986 (p.105, tab.2); Ramaiah & Nair, 1997 (tab.1); Achuthankutty & al., 1998 (p.1, Table 2, seasonal abundance vs monsoon); Madhu & al., 2007 (p.54, Table 4, abundance vs monsoon) | | | | Ref.: | | | Ranga Reddy & Radhakrishna, 1982 (p.261: Rem.); Santu K.S. & al., 2017 (p.3, figs.F, M, Rem.: genetic analysis) |  Issued from : S. Wellershaus in Veröff. Inst. Meeresforsch. Bremerh., 1969, 11 (2). [p.260, Fig.27-30]. As Pseudodiaptomus binghami malayus subsp. Female (from (Cochin Backwater, India): 29, habitus (lateral; with detail of thoracic segment 5 edge); 30, P5. Nota: - Ratio cephalothorax : urosome = 1.5. - Proportions of the abdominal segments 32, 18, 22, 11; right caudal ramus 17 (20 %). Caudal ramus length 17, breadth 7 (The different lengths of the caudal rami may be an artefact: Length: breadth = 2.5 right; 2.4 left). Male: - 27, habitus (lateral; with detail of thoracic segment 5 edge); 28, P5. Nota: Proportions of the urosomal segments 13, 18, 19, 21, 11; right and left caudal rami = 18 %. - Caudal ramus length : breadth = 2,7. Rem: The present form differs from P. binghami Sewell by different aspects: The female P5 has one terminal spine less, and the proportions of the spines are different; the female caudal rami proportions are slightly different; the female abdomen bears another pattern of spinulation dorsally; Tthe thoracic segment 5 bears some spinules ventro-laterally in both sexes; the male P5 differs in having an additional projection on the long projection of the left basipod 2, and there is a long broad spine on exopod segments 2-3.
Scale : single line = 0.1 mm ; double line = 0.05 mm.
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 Issued from : K.S. Santu, S. Bijoy Nandan, R.I. Cleetus & M. Harikrishnan in Mitochondrial DNA Part A, 2017. [p.4, Figs. 2, 3]. Female (from 9°40'-10°12'N, 76°10'-76°30'E); fig.3, habirus (right lateral view); fig.4, urosome (dorsal view). Nota: - Prosome : urosome ratio 61 : 39. - Prosome 1.26 times longer as broad (1.9 : 1.5). ) Head imperfectly fused with 1st pediger segment, 4thj and 5th thoracic segments also imperfectly fused. - Rostrum with 2 filaments, these shorter than the 1st segment of A1. - Posterolateral corners of prosome rounded with small dorsal spine on each side above urosome insertion and, below this, vertical row of about 10 small spinules. - Urosme 4-segmented; proportional lengths of urosomites plus caudal rami 36 : 14 : 21 : 12 : 17 = 100. - Genital segment prijecting symmetrically with somewhat long tuft of fine hairs on ventral side and containing receptaculum seminis; some bears pair of egg sacs. - Urosomite 1 interrupted in the middle by 9 large spinules, 8 spinules on either side. - Posterior margin of urosomite 2 incomplete laterally, with 16 large, coarse teeth mid-dorsally, these diminishing in size ventrolaterally. - Urosomite 3 complete with 16-18 more or less transverse rows of coarse teeth mid-dorsally, their size lessening laterally. - Urosomite 4 furnished with spinules posterolaterally and scattered ornamentation anterolaterally, but barren mid-dorsally. - Caudal rami symmetrical, divergent and slightly over 1.6 times as long as broad (1.8 : 1.1); dorsal side of each ramus with 2 pairs of irregularly arranged cluster of spinules (abour 11-16 coarse spinules each); inner matgons kairy; each caudal ramus except outer seta 1 with 5 strong unjoined, dagger-shaped setae, outer seta 3 being strongest (dilated and spearhead-shaped), folloxed by outer seta 2; in addition 1 small sensory bristhe lying between outer seta 4 and 5; length-wodth ratio of caudal ramus and length ratio of setae (counted from outside) in Table 1 - A1 21-segmented, reaching almost to posterior margin of genital segment; incomplete articulation separating segments 6 and 7; - Mouth parts alike for all pseudodiaptomid species. - Armature formula of P1-P4 in Table 2.
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 Issued from : K.S. Santu, S. Bijoy Nandan, R.I. Cleetus & M. Harikrishnan in Mitochondrial DNA Part A, 2017. [p.5, Fig.4]. Female: P5 (dorsal view). Scale bar in mm. Nota: - Left and right legs identical, uniramous, 4-segmented; basis slightly broader than coxa, without ledge on inner margin and with a few spinules on distal outer region; exopodal segment 1 cylindrical and longer than the basis and coxa bearing 1 strong, internally serrate spine at distal outer angle; 2 short, blunt, spinous processes, each with a hyaline lobe, at its proximal and distal internal angles; a row of a few spinules on distal external margin just behind above mentioned serrate spine; exopodal segment 2 bearing 4 strong, serrate spines, of which 3 short and remaining one longer than the combined length of basis and exopodal segment 1.
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 Issued from : K.S. Santu, S. Bijoy Nandan, R.I. Cleetus & M. Harikrishnan in Mitochondrial DNA Part A, 2017. [p.4, Table 1]. Female: The length-width proportions of the caudal ramus and setae of P. malayus
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 Issued from : K.S. Santu, S. Bijoy Nandan, R.I. Cleetus & M. Harikrishnan in Mitochondrial DNA Part A, 2017. [p.4, Table 2]. Female: Armature formula of the swimming legs P1 to P4 of P. malayus..
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 Issued from : K.S. Santu, S. Bijoy Nandan, R.I. Cleetus & M. Harikrishnan in Mitochondrial DNA Part A, 2017. [p.5, Figs. 6, 7]. Male: fig.6, habitus (left lateral view); 7, urosome (lateral view). Nota: - Prosome : urosome ratio 61 ; 39. - Prosome 1.8 times longer than wide (1.7 : 0.9). - Pedigerous segment 5 bearing spine similar to that in female; spines scattered and fewer in number. - Proportional lengths of urosomal segments and caudal rami 11 : 22 : 21 ; 21 ; 8 : 17 : 100. - Urosomal segment 1 with few spines only on dorsal posterior margin; - Urosomal segments, 2, 3 and 4 armed with spines on posterior margin. - Caudal rami devoid of spines; setae less strong and more normal than those of female.
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 Issued from : K.S. Santu, S. Bijoy Nandan, R.I. Cleetus & M. Harikrishnan in Mitochondrial DNA Part A, 2017. [p.6, Fig.8]. Male: P5 (dorsal view). Scale bar in mm. Nota: - Basis of left P5 with long projection on inner side, this bearing another small projection on its side; spine on left exopodal segments 2-3 much longer than in female
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 Issued from : K.S. Santu, S. Bijoy Nandan, R.I. Cleetus & M. Harikrishnan in Mitochondrial DNA Part A, 2017. [p.8, Table 3]. Morphological characteristics of female specimen of P. malayalus with previous record of P. malayalus and P. binghami. (specimen from Nambur canal, Andhra Pradesh, India).
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 Issued from : S. Wellershaus in Veröff. Inst. Meeresforsch. Bremerh., 1969, 11 (2). [p.262]. As Pseudodiaptomus binghami malayalus. Female (from Cochin Backwater): Propotions of the abdominal segments and caudal and caudal setae
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 Issued from : S. Wellershaus in Veröff. Inst. Meeresforsch. Bremerh., 1969, 11 (2). [p.262]. As Pseudodiaptomus binghami malayalus. Male (from Cochin Backwater): Proportions of the abdominal segments
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Carte de distribution de Pseudodiaptomus malayalus par zones géographiques
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| | | | | | | Loc: | | | India, Cochin Backwater, Vembanad estuarine system, Bombay, Kerala, Goa | | | | N: | 8 | | | | Lg.: | | | (1005) F: 1,25-1,30; M: 1,08-1,11; (1211) F: 1-1,27; M: 1,02-1,1; {F: 1,25-1,30; M: 1,02-1,11} | | | | Rem.: | limnique, estuaire.
Incomplete data.
Voir aussi les remarques en anglais | | | Dernière mise à jour : 18/12/2017 | |
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 Toute utilisation de ce site pour une publication sera mentionnée avec la référence suivante :
Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2024. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 18 avril 2024] © copyright 2005-2024 Sorbonne Université, CNRS
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