Redescription of Gymnorhynchus isuri (Cestoda: Trypanorhyncha) from Isurus oxyrinchus (Elasmobranchii: Lamnidae)

Knoff, Marcelo; Clemente, Sérgio Carmona de São; Pinto, Roberto Magalhães; Lanfredi, R.M.; Gomes, Delir Corrêa

doi:10.14411/fp.2007.028

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…To the best of our knowledge, only G. gigas has to date been reported from the Mediterranean basin in the swordfish Xiphias gladius Linnaeus, 1758, the Ray's bream Brama brama (Bonnaterre, 1788), and the silver scabbardfish Lepidopus caudatus (Euphrasen, 1788) (49,50). Gymnorhynchus isuri is known from the north, southwestern, and northeast Atlantic and the Tasmanian Sea in the southwestern Pacific, infecting the shortfin mako Isurus oxyrinchus Rafinesque, 1810 and the blue shark Prionace glauca (Linnaeus, 1758) (30,51,52), and no record exists of G. isuri in Mola species anywhere.…”

Section: Discussionmentioning

confidence: 99%

New Parasite Records for the Sunfish Mola mola in the Mediterranean Sea and Their Potential Use as Biological Tags for Long-Distance Host Migration

et al. 2020

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Studies describing the parasite fauna of sunfish species from the Mediterranean Sea are to date limited, despite information gained through parasitological examination may reveal unknown ecological and biological aspects of both hosts and parasites. Moreover, recent molecular studies on sunfish taxonomy revealed the presence of two species belonging to the genus Mola in the Mediterranean basin, namely M. mola and M. alexandrini. These two fish taxa have long been synonymized or confused among them, which implies that the majority of the studies carried out so far reported the parasites infecting both species under a single host species, generally referred to as M. mola. We hereby investigated the parasite fauna of a 43 cm long M. mola specimen from the Mediterranean Sea, whose identification was confirmed by molecular tool, and provided the first evidence of the occurrence of the nematode Anisakis simplex (s.s.) and of the cestode Gymnorhynchus isuri in Mola species anywhere. The use of helminth species as biological tags for the sunfish is also discussed.

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Section: Discussionmentioning

confidence: 99%

New Parasite Records for the Sunfish Mola mola in the Mediterranean Sea and Their Potential Use as Biological Tags for Long-Distance Host Migration

et al. 2020

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“…This is a novel feature, which had not earlier been described from trypanorhynchs. However, pores have been earlier reported already from the hooks of Molicola horridus (Goodsir, 1841) Dollfus, 1935 and Gymnorhynchus isuri Robinson, 1959 (see Knoff et al 2004, 2007).…”

Section: Resultsmentioning

confidence: 86%

Tentaculariids (Cestoda, Trypanorhyncha) of elasmobranchs from Malaysian Borneo

Palm,

Haseli

2023

Zoosystema

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The waters off Borneo, the third-largest island in the world located at the geographic centre of Maritime Southeast Asia, harbour a high diversity of marine cestodes. We examined the tentaculariid species collection of the large-scale sampling endeavours in Malaysian Borneo between 2002 and 2008. Our study resulted in reporting the tentaculariid fauna of the region with greater detail, describing two new species, and erecting a new genus,

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“… Isurus oxyrinchus ( Elasmobranchii : Lamnidae ); marine; spiral valve; adult; WTSA ; Brazil ( Knoff et al 2002 , 2007 ).…”

Section: Parasite-host Listmentioning

confidence: 99%

Annotated checklist of fish cestodes from South America

Alves¹,

Chambrier²,

Scholz³

et al. 2017

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An exhaustive literature search supplemented by a critical examination of records made it possible to present an annotated checklist of tapeworms (Cestoda) that, as adults or larvae (metacestodes), parasitize freshwater, brackish water and marine fishes, i.e. cartilaginous and bony fishes, in South America. The current knowledge of their species diversity, host associations and geographical distribution is reviewed. Taxonomic problems are discussed based on a critical evaluation of the literature and information on DNA sequences of individual taxa is provided to facilitate future taxonomic and phylogenetic studies. As expected, the current knowledge is quite uneven regarding the number of taxa and host-associations reported from the principal river basins and marine ecoregions. These differences may not only reflect the actual cestode richness but may also be due to the research effort that has been devoted to unravelling the diversity of these endoparasitic helminths in individual countries. A total of 297 valid species, 61 taxa identified to the generic level, in addition to unidentified cestodes, were recorded from 401 species of fish hosts. Among the recognized cestode orders, 13 have been recorded in South America, with the Onchoproteocephalidea displaying the highest species richness, representing c. 50% of all species diversity. The majority of records include teleost fish hosts (79%) that harbour larval and adult stages of cestodes, whereas stingrays (Myliobatiformes) exhibit the highest proportion of records (39%) among the elasmobranch hosts. Fish cestodes are ubiquitous in South America, being mostly recorded from the Warm Temperate Southeastern Pacific (WTSP; 31%) for marine hosts and the Amazon River basin (45%) for freshwater ones. The following problems were detected during the compilation of literary data: (i) unreliability of many records; (ii) poor taxonomic resolution, i.e. identification made only to the genus or even family level; (iii) doubtful host identification; Alves et al. / ZooKeys 650: 1-205 (2017) 2 and (iv) the absence of voucher specimens that would enable us to verify identification. It is thus strongly recommended to always deposit representative specimens in any type of studies, including faunal surveys and ecological studies. An analysis of the proportion of three basic types of studies, i.e. surveys, taxonomic and ecological papers, has shown a considerable increase of ecological studies over the last decade.

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Redescription of Gymnorhynchus isuri (Cestoda: Trypanorhyncha) from Isurus oxyrinchus (Elasmobranchii: Lamnidae)

Cited by 7 publications

References 13 publications

New Parasite Records for the Sunfish Mola mola in the Mediterranean Sea and Their Potential Use as Biological Tags for Long-Distance Host Migration

New Parasite Records for the Sunfish Mola mola in the Mediterranean Sea and Their Potential Use as Biological Tags for Long-Distance Host Migration

Tentaculariids (Cestoda, Trypanorhyncha) of elasmobranchs from Malaysian Borneo

Annotated checklist of fish cestodes from South America

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