Redescription of Eight Species of Parasitic Copepods (Siphonostomatoida, Pandaridae) Infecting Japanese Elasmobranchs

Izawa, Kunihiko

doi:10.1163/001121609x12591347509329

Cited by 15 publications

(19 citation statements)

References 9 publications

(9 reference statements)

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“…Although uncertain in E. torpedinis from accounts by Wilson (1907) and Cressey (1967), the lateral lobes of the cephalothorax and the lateral plates of pediger 2 are bordered with marginal membranes in E. coleoptratus (cf. Shiino, 1954;Hewitt, 1967a;Izawa, 2010), E. denticulatus (cf. Shiino, 1954;Cressey, 1967;Hewitt, 1967b;Izawa, 2010), E. pellucidus (cf.…”

Section: Echthrogaleus Mitsukurinaementioning

confidence: 99%

“…Shiino, 1954;Hewitt, 1967a;Izawa, 2010), E. denticulatus (cf. Shiino, 1954;Cressey, 1967;Hewitt, 1967b;Izawa, 2010), E. pellucidus (cf. Shiino, 1963;Ho & Kim, 1996, as E. denticulatus), and E. disciarai (cf.…”

Section: Echthrogaleus Mitsukurinaementioning

confidence: 99%

“…The posterolateral lobes of the genital complex are almost straight or weakly curved and, therefore, do not overlap in the congeners E. denticulatus (cf. Wilson, 1907;Cressey, 1967;Hewitt, 1967b;Izawa, 2010), E. torpedinis (cf. Wilson, 1907;Cressey, 1967), E. pellucidus (cf.…”

Section: Echthrogaleus Mitsukurinaementioning

confidence: 99%

“…After my redescription of the eight known pandarid copepod species infesting Japanese elasmobrachs was published (Izawa, 2010), I had the opportunity to examine a parasitic copepod recovered from the body surface of the goblin shark, Mitsukurina owstoni Jordan, 1898. The shark was captured in the autumn of 2010 on the slopes of the Tokyo Canyon at about 400 m depth in Tokyo Bay, Japan, and is deposited in the Mie Prefectural Museum (MPM), Tsu.…”

Section: Introductionmentioning

confidence: 99%

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Echthrogaleus mitsukurinae sp. nov. (Copepoda, Siphonostomatoida, Pandaridae) infesting the goblin shark Mitsukurina owstoni Jordan, 1898 in Japanese waters

2012

Crustac

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Echthrogaleus mitsukurinae sp. nov. (Copepoda, Siphonostomatoida, Pandaridae) is described based on a female recovered from the body surface of the goblin shark, Mitsukurina owstoni Jordan, 1898, captured on the slope of the Tokyo Canyon at about 400 m depth in Tokyo Bay, Japan. This new species is easily distinguishable from all its congeners in having the following unique features in the female: (1) the lateral lobes of the cephalothorax and the lateral plates of pediger 2 are devoid of marginal membranes, (2) the dorsal plates of pediger 4 have a smooth margin, (3) the posterolateral lobes of the genital complex are widely curved medially and overlap each other across the midline, (4) legs 2 and 3 have 3-segmented endopods, and (5) leg 4 has an incompletely 2-segmented exopod. RÉSUMÉEchthrogaleus mitsukurinae nov. sp. (Copepoda, Siphonostomatoida, Pandaridae) est décrit à partir d'une femelle prélevée à la surface du corps du requin lutin, Mitsukurina owstoni Jordan, 1898, capturé sur la pente du Tokyo Canyon à environ 400 m de profondeur dans la bale de Tokyo, au Japon. Cette nouvelle espéce se distingue facilement de tous ses congénères par les caractères uniques suivants chez la femelle : (1) les lobes latéraux, du céphalothorax et les plaques latérales du segment portant la deuxième paire de pattes sont dépourvues de membranes latérales, (2) les plaques dorsales du segment portant la quatrième paire de pattes sont à bord lisse, (3) les lobes postéro-latéraux du complexe génital sont largement écartés à leur base interne et se recouvrent ensuite sur la ligne médiane, (4) les pattes 2 et 3 ont des endopodites tri-segmentés, et (5) la patte 4 possède un exopodite incompletèment bi-segmenté. 1 )

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Section: Echthrogaleus Mitsukurinaementioning

confidence: 99%

Section: Echthrogaleus Mitsukurinaementioning

confidence: 99%

Section: Echthrogaleus Mitsukurinaementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Echthrogaleus mitsukurinae sp. nov. (Copepoda, Siphonostomatoida, Pandaridae) infesting the goblin shark Mitsukurina owstoni Jordan, 1898 in Japanese waters

2012

Crustac

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“…E. denticulatus was originally described by Thomson (1889) as Dinematura neozealanica and was later transferred to the genus Echthrogaleus by Basset-Smith (1899). E. denticulatus has a wide distribution, having been reported from at least nine different shark species, in the Atlantic, Pacific and Indian Oceans (Cressey 1967;Hewitt 1979;Izawa 2010;Oldewage & Smale 1993;Pilla 1985;Shiino 1954;Smith 1874;Watchariya et al 2009). E. denticulatus was reported on A. pelagicus from the Indian Ocean (Madagascar coast), South African coast, north-eastern Brazil, Thailand and Oman waters (Cressey 1867;Dippenaar 2004;Henderson et al 2013;Santander-Neto & Lessa 2013;Watchariya et al 2009).…”

Section: Introductionmentioning

confidence: 99%

First Report of Echthrogaleus denticulatus (Smith 1874) on the Pelagic Thresher Shark (Alopias pelagicus Nakamura 1935) from Indian EEZ of Andaman Sea

Pradeep¹,

Kumar²,

Swapnil³

2017

JSM

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Symbiotic Siphonostomatoida (Copepoda) of the hammerhead shark species Sphyrna zygaena (Carcharhiniformes: Sphyrnidae) and stingray Dasyatis pastinaca (Myliobatiformes: Dasyatidae) off the Canary Islands, with a re-description of Pseudocharopinus pillaii Kabata, 1979

Dippenaar

Narváez²,

Osaer³

et al. 2021

Parasitol Res

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The biology, including accompanying ectoparasitic fauna, remains unstudied for several elasmobranchs off the Canary Islands in spite of concerns over their conservation. Within this region, this is the first report of copepod associations with these fishes. Twenty smooth hammerhead sharks, Sphyrna zygaena, and one common stingray, Dasyatis pastinaca, were inspected for symbionts on their body surface. Symbiotic siphonostomatoids were collected from 18 S. zygaena hosts and represent two different species, i.e., Alebion crassus (Caligidae) and Pandarus cranchii (Pandaridae). A high prevalence of 90% and a mean infection of 8.3 individuals per infected host were exhibited by A. crassus, while only a single P. cranchii was collected. Both these findings represent new geographical records. Additionally, one free-ranging common stingray Dasyatis pastinaca was opportunistically inspected and 11 Pseudocharopinus pillaii (Lernaeopodidae) collected which constitutes a new host record and a new geographical record. A re-description with detail regarding the morphology of the appendages is provided for the first time. Due to the morphological similarity between P. pillaii and P. malleus, a molecular analysis of the partial mitochondrial DNA cytochrome oxidase I gene was done in an attempt to determine if there is molecular divergence between the two species. This provided an estimate of the phylogenetic relationships amongst four Pseudocharopinus species (P. bicaudatus, P. pteromylaei, P. malleus, and P. pillaii) with Charopinus dubius as an outgroup as an alternative hypothesis to compare with the previous morphological topology estimated for all Pseudocharopinus species.

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Redescription of Eight Species of Parasitic Copepods (Siphonostomatoida, Pandaridae) Infecting Japanese Elasmobranchs

Abstract: Eight species of pandarid copepods are redescribed based on specimens recovered from six species of Japanese elasmobranchs. These are Pandarus cranchii Leach, 1819, P. smithii Rath-

Cited by 15 publications

References 9 publications

Echthrogaleus mitsukurinae sp. nov. (Copepoda, Siphonostomatoida, Pandaridae) infesting the goblin shark Mitsukurina owstoni Jordan, 1898 in Japanese waters

Echthrogaleus mitsukurinae sp. nov. (Copepoda, Siphonostomatoida, Pandaridae) infesting the goblin shark Mitsukurina owstoni Jordan, 1898 in Japanese waters

First Report of Echthrogaleus denticulatus (Smith 1874) on the Pelagic Thresher Shark (Alopias pelagicus Nakamura 1935) from Indian EEZ of Andaman Sea

Symbiotic Siphonostomatoida (Copepoda) of the hammerhead shark species Sphyrna zygaena (Carcharhiniformes: Sphyrnidae) and stingray Dasyatis pastinaca (Myliobatiformes: Dasyatidae) off the Canary Islands, with a re-description of Pseudocharopinus pillaii Kabata, 1979

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