An accidental attachment of Elthusa raynaudii (Isopoda, Cymothoidae) in Etmopterus sp. (Squaliformes, Etmopteridae)

Williams, Ernest H.; Bunkley-Williams, Lucy; Ebert, David A.

doi:10.2478/s11686-010-0006-6

Cited by 6 publications

(4 citation statements)

References 17 publications

(5 reference statements)

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“…The isopod in this odd location probably was either introduced to the mouth of L. sceleratus while preying on its natural host or the parasite migrated from the gill cavity to the mouth after death of the captured L. sceleratus . The same odd cases for this isopod species were reported by Hurley ( 1961 ) (in New Zealand) and Williams et al ( 2010 ) (in Taiwan) from the stomach and the roof of the mouth of shark, respectively, and they described the cases as being accidental. The isopod L. raynaudii was originally described from the Cape of Good Hope in South Africa (Milne-Edwards 1840 ) from unknown host and also recorded several times from a wide range of localities within the Indo-Pacific region and sub-Saharan Africa (Van der Wal et al 2019 ).…”

Section: Discussionsupporting

confidence: 81%

Phylogeny and ultrastructure of Elthusa raynaudii (Isopoda, Cymothoidae) firstly recorded from the invasive silver cheeked toadfish (Lagocephalus sceleratus) (Gmelin 1789) in eastern Mediterranean Sea coast

Mahmoud,

Fahmy,

Khattab

et al. 2024

Parasitol Res

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With the opening of the Suez Canal in 1869, many changes have occurred in the Mediterranean Sea ecosystem so became a home to many invasive Lessepsian marine species that have migrated from the Red Sea. About 500 marine species including pufferfish have immigrated and rapidly established a population in the Mediterranean Sea causing significant impact on its ecosystem and fisheries sector. The parasitic fauna of these pufferfish has scarcely been studied in the Mediterranean Sea and also in their native habitat. During this surveillance study on the invasive pufferfish species from the Egyptian Mediterranean coast, the female cymothoid isopod Elthusa raynaudii was detected from the branchial cavity and also in the buccal cavity of 23.9% of the examined Lagocephalus sceleratus. The isolated isopod species was firstly identified and described through electron microscopy and molecular phylogeny based on the sequences of mitochondrial 16S rRNA gene. Additionally, the description of eggs, embryonic stage, and manca of E. raynaudii was firstly provided. The pathological impact on the infested fish tissues was investigated and revealed curling and loss of secondary gill lamellae in addition to mucous exudates in between the gill filaments and granuloma formation in the gill arch. The study provided the first report of L. sceleratus as a new host for the isopod E. raynaudii collected from the Egyptian Mediterranean coast as a new locality record. The role of the Lessepsian invasive pufferfish in transmitting parasites to the native fish species was discussed. Graphical Abstract

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Section: Discussionsupporting

confidence: 81%

Phylogeny and ultrastructure of Elthusa raynaudii (Isopoda, Cymothoidae) firstly recorded from the invasive silver cheeked toadfish (Lagocephalus sceleratus) (Gmelin 1789) in eastern Mediterranean Sea coast

Mahmoud,

Fahmy,

Khattab

et al. 2024

Parasitol Res

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“…Williams et al (2010) reported, as an accidental case in Taiwan, Elthusa raynaudii from the palate of a lantern shark specimen that was later designated as the holotype of Etmopterus joungi Knuckey, Ebert, and Burgess, 2011. However, the attachment site, host taxon (i.e., elasmobranch fish), and the large pleotelson shown in a photograph of Williams et al (2010) suggest that their specimen might also be E. splendida rather than E. raynaudii. This specimen (California Academy of Science; CASIZ 180277) needs to be further examined in future research.…”

Section: Resultsmentioning

confidence: 99%

First Record of the Rare Parasitic Isopod <i>Elthusa splendida</i> (Cymothoidae) from the Pacific Ocean, Based on a Specimen Found in a Museum Shark Collection

Kawanishi

Ohashi

2020

Spec.Div.

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“…La mayoría de este grupo de peces pertenecen a familias de hábitos demersales, como Sciaenidae y Serranidae. De manera general, estos isópodos aparentan tener preferencia por los peces óseos (Trilles & Öktener, 2004;Williams et al 2010).…”

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Nerocila acuminata (Isopoda: Cymothoidae) como parásito de cápsulas ovígeras de Rostroraja texana: lista de hospederos conocidos

2020

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Los isópodos de la familia Cymothoidae se caracterizan por ser ectoparásitos de una gran variedad de especies marinas, que incluyen al grupo de los tiburones y rayas. Sin embargo, las interacciones con este grupo son poco conocidas. Así, el presente trabajo tiene como objetivo evidenciar el primer registro de la asociación de cuatro isópodos hembras de N. acuminata (20-28 mm longitud total, 15-18 mm de ancho) con dos cápsulas ovígeras de R. texana encontradas en el estómago del tiburón martillo común S. lewini. La captura del tiburón se realizó el 17 de febrero de 2019 en la pesca artesanal de Salinas Punta Roca Partida, sur de Veracruz, México. Se presenta, además, una lista de 67 especies nominales de peces hospederos, así como algunos peces no identificados, incluidas en 36 familias, 19 órdenes y dos clases, registrados para N. acuminata, típica del Atlántico occidental, y su congénere del Pacífico oriental, N. californica. Esto demuestra que ambas especies de isópodos tienen varios peces hospedantes; sin embargo, se observa preferencia por las especies demersales, al destacar la familia Sciaenidae.

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An accidental attachment of Elthusa raynaudii (Isopoda, Cymothoidae) in Etmopterus sp. (Squaliformes, Etmopteridae)

Cited by 6 publications

References 17 publications

Phylogeny and ultrastructure of Elthusa raynaudii (Isopoda, Cymothoidae) firstly recorded from the invasive silver cheeked toadfish (Lagocephalus sceleratus) (Gmelin 1789) in eastern Mediterranean Sea coast

Phylogeny and ultrastructure of Elthusa raynaudii (Isopoda, Cymothoidae) firstly recorded from the invasive silver cheeked toadfish (Lagocephalus sceleratus) (Gmelin 1789) in eastern Mediterranean Sea coast

First Record of the Rare Parasitic Isopod <i>Elthusa splendida</i> (Cymothoidae) from the Pacific Ocean, Based on a Specimen Found in a Museum Shark Collection

Nerocila acuminata (Isopoda: Cymothoidae) como parásito de cápsulas ovígeras de Rostroraja texana: lista de hospederos conocidos

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