Pandaridae Milne-Edwards, 1840

Venmathi Maran, B. A., Ohtsuka, Susumu & Shang, Xu, 2012, Records of Adult Caligiform Copepods (Crustacea: Copepoda: Siphonostomatoida) in Marine Plankton from East Asia, Including Descriptions of Two New Species of Caligus (Caligidae), Species Diversity 17 (2), pp. 201-219: 213-216

publication ID

http://doi.org/ 10.12782/sd.17.2.201

publication LSID

lsid:zoobank.org:pub:B59C9BBF-B456-4CD9-B646-88ECC92ED28B

persistent identifier

http://treatment.plazi.org/id/701FA908-D230-FFBC-14E9-7EBC4B33FB03

treatment provided by

Felipe

scientific name

Pandaridae Milne-Edwards, 1840
status

 

Family Pandaridae Milne-Edwards, 1840   Pandarus satyrus Dana, 1852  

( Figs. 10 View Fig , 11 View Fig )

Pandarus satyrus Dana, 1852: 1368   ; Brady 1883: 134; Bassett-Smith 1899: 467; Wilson 1907: 415; 1914: 71; Yamaguti 1936: 5; Bere 1936: 595; Shiino 1957: 364, 1959a: 315, 1959b: 352, 1960: 493; Ho 1963: 90; Cressey 1967: 15; Benz 1981: 966.

Material examined. One young male (KMNH IvR 500,509), off Akuseki Island, Tokara Islands, Kagoshima Prefecture, Japan (St. 7), 27 May 2008 ( Table 1)   .

Description. Male. Body ( Fig. 10A View Fig ) 6.31 mm long, excluding caudal setae. Cephalothorax narrow, longer than wide, 4.00× 2.87 mm. Second pediger extended posterolaterally into pair of lobe-like structures. Genital complex wider than long, 1.23× 1.50 mm. Abdomen small, wider than long, 0.36× 0.76 mm. Caudal ramus small and wide, 0.28× 0.32 mm, armed with 4 long and 2 small setae.

Antennule ( Fig. 10B View Fig ) 2-segmented; proximal segment long with 9 plumose and 5 hirsute setae; distal segment small with 5 long, hirsute setae and 3 short setae. Antenna ( Fig. 10C View Fig ) indistinctly 3-segmented; proximal segment unarmed; middle segment unarmed, lacking posterior process; distal segment with curved claw bearing 1 proximal and 1 medial seta. Post-antennal process ( Fig. 10C View Fig ) large, modified as adhesion pad, bearing 2 basal papillae on sternum with 4 setules each. Maxillule ( Fig. 10C View Fig ) represented by small, rounded process with 2 small setae. Oral cone ( Fig. 10D View Fig ) long; 2 large adhesion pads present on ventral surface of cephalothorax lateral to oral cone. Mandible ( Fig. 10E View Fig ) slender, with 10 marginal teeth subapically. Maxilla ( Fig. 10F View Fig ) 2-segmented; proximal segment robust; distal segment broad, with 2 broad claws ornamented with hyaline membrane distally and patchy spinules at base. Maxilliped ( Fig. 10G View Fig ) incompletely 3-segmented; proximal segment largest; middle segment small, partly fused with distal segment to form subchela; distal segment short, robust, pointed claw armed with 2 setae subterminally. Sternal furca absent.

Armature on rami of legs 1-4 summarized in Table 4.

Leg 1 ( Fig. 11A View Fig ) protopod with basis bearing 1 outer and 1 inner plumose seta; exopod 2-segmented, distal segment bearing 3 long, thick plumose setae; endopod 2-segmented, distal segment carrying 3 long, thick plumose setae. Leg 2 ( Fig. 11B View Fig ) protopod with basis bearing small outer and long, plumose inner setae; exopod 2-segmented; distal segment carrying 3 small spines and 5 long setae; endopod 2-segmented, bearing 7 setae distally. Leg 3 ( Fig. 11C View Fig ) protopod with basis bearing 1 outer and 1 inner plumose seta; exopod 2-segmented, proximal segment with small spine; distal segment carrying 2 small and 1 long spines. Leg 4 ( Fig. 11D View Fig ) protopod with basis bearing outer plumose seta; exopod 1-segmented with 3 small and 1 long spines and fringed with hyaline membrane laterally. Leg 5 ( Fig. 11E View Fig ) represented by papilla bearing 1 plumose and 1 pinnate seta.

Remarks. Adults of P. satyrus   differ from the present young male in the following characters: (1) the 2-segmented abdomen (vs non-segmented), and (2) the setal formula of the second, third, and fourth legs (vs fewer elements) (cf. Shiino 1954b). In our previous study, we collected many chalimus stages and adult males of Pandarus   sp. in plankton samples from Japan ( Venmathi Maran and Ohtsuka 2008). Pandarus   is host-specific to elasmobranchs ( Cressey 1967; Benz 1981, 1992). Normally they would be firmly attached by their maxillipeds to the body surface of sharks ( Benz 1981, 1992; Benz et al. 2003), but if accidentally detached they can become planktonic ( Venmathi Maran and Ohtsuka 2008). A separate genus Nogaus Leach, 1816   (or Nogagus   ), was established for free-swimming specimens in the family Pandaridae   by Kabata (1979), but still several nominal species of Nogaus   have yet to be assigned to a valid genus (cf. Boxshall and Halsey 2004).

Distribution. Shiino (1954b) found both sexes of P. satyrus   on the body surface of the smooth hammerhead shark Sphyrna zygaena (Linnaeus, 1758)   and the blue shark Prionace   (= Isuropis) glauca (Linnaeus, 1758) in Japanese waters. Pandarus satyrus   is cosmopolitan, recorded from the Atlantic coast of the United States ( Wilson 1914), Japan ( Shiino 1954b, 1959a, b, 1960), the Gulf of Mexico, and the Indo- Pacific and Atlantic Oceans ( Cressey 1967).

Kingdom

Animalia

Phylum

Arthropoda

Class

Maxillopoda

Order

Siphonostomatoida

Family

Pandaridae

Loc

Pandaridae Milne-Edwards, 1840

Venmathi Maran, B. A., Ohtsuka, Susumu & Shang, Xu 2012
2012
Loc

Pandarus satyrus

Benz, G. W. 1981: 966
Cressey, R. 1967: 15
Ho, J. S. 1963: 90
Shiino, S. M. 1960: 493
Shiino, S. M. 1959: 315
Shiino, S. M. 1959: 352
Shiino, S. M. 1957: 364
Yamaguti, S. 1936: 5
Bere, R. 1936: 595
Wilson, C. B. 1914: 71
Wilson, C. B. 1907: 415
Bassett-Smith, P. W. 1899: 467
Brady, G. S. 1883: 134
Dana, J. D. 1852: 1368
1852