Cardicola forsteri (Digenea: Sanguinicolidae) from the Heart of a Northern Bluefin Tuna, Thunnus thynnus (Scombridae), in the Northwest Atlantic Ocean

Bullard, Stephen A.; Goldstein, Robert J.; Goodwin, Robert H.; Overstreet, Robin M.

doi:10.1654/4135

Cited by 22 publications

(11 citation statements)

References 6 publications

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“…Based on morphological studies, these parasites have also been reported to be widely distributed: C. forsteri is known from the Southern Ocean off Australia (from T. maccoyii ) and the western Atlantic Ocean (from T. thynnus ) (Cribb et al. 2000a; Bullard et al. 2004), and H. thynni is known from the Southern Ocean (from T. maccoyii ) and in the Mediterranean Sea (from T. thynnus ) (Nowak et al.…”

Section: Introductionmentioning

confidence: 99%

“…The latter species has now been identified as Hexostoma thynni (see Hayward et al 2007). Based on morphological studies, these parasites have also been reported to be widely distributed: C. forsteri is known from the Southern Ocean off Australia (from T. maccoyii) and the western Atlantic Ocean (from T. thynnus) (Cribb et al 2000a;Bullard et al 2004), and H. thynni is known from the Southern Ocean (from T. maccoyii) and in the Mediterranean Sea (from T. thynnus) ). Here we use a molecular approach to investigate whether these and other parasites we collected are indeed cosmopolitan in and on various species of tunas (Thunnus spp.).…”

Section: Introductionmentioning

confidence: 99%

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Molecular evidence for cosmopolitan distribution of platyhelminth parasites of tunas (Thunnus spp.)

et al. 2007

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Global distribution of platyhelminth parasites and their host specificities are not well known. Our hypothesis was that platyhelminth parasites of large pelagic fishes are common around the world. We analysed molecular variation in three different taxa of platyhelminth parasites infecting four species of tunas: yellowfin tuna (Thunnus albacares, Scombridae) from Western Australia, southern bluefin tuna (Thunnus maccoyii, Scombridae) from South Australia, Pacific bluefin tuna (Thunnus orientalis, Scombridae) from Pacific Mexico and northern bluefin tuna (T. thynnus, Scombridae) from two localities in the Mediterranean (Spain and Croatia). Comparisons of ITS2 and partial 28S rDNA demonstrated two congeneric species of blood flukes (Digenea: Sanguinicolidae) from multiple hosts and localities: Cardicola forsteri from southern bluefin and northern bluefin tunas, and Cardicola sp. from Pacific bluefin and northern bluefin tunas; and a gill fluke, Hexostoma thynni (Polyopisthocotylea: Hexostomatidae), from yellowfin, southern bluefin and northern bluefin tunas. Partial 28S rDNA indicates that a second type of fluke on the gills, Capsala sp. (Monopisthocotylea: Capsalidae), occurs on both southern bluefin and Pacific bluefin tunas. This appears to be the first report of conspecific platyhelminth parasites of teleosts with a wide-ranging geographical distribution that has been confirmed through molecular approaches. Given the brevity of the free-living larval stage of both taxa of flukes on the gills (H. thynni and Capsala sp.), we conclude that the only feasible hypothesis for the cosmopolitan distribution of these flatworms is migrations of host tunas. Host migration also seems likely to be responsible for the widespread occurrence of the two species of blood flukes (Cardicola spp.), although it is also possible that these were translocated recently by the spread of infected intermediate hosts.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular evidence for cosmopolitan distribution of platyhelminth parasites of tunas (Thunnus spp.)

et al. 2007

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“…Findings of this species, supported by adult examination or molecular confirmation, have been reported in cage-reared T. maccoyii (type-host) from off South Australia (Cribb et al, 2000) and in T. thynnus from the Northwest Atlantic (Bullard et al, 2004) and the Mediterranean (Aiken et al, 2007). Adults of C. forsteri have not been described to date from T. thynnus.…”

Section: Remarksmentioning

confidence: 69%

“…Five species have been found in tunas (Scombridae: Thunnini): Cardicola ahi Yamaguti, 1970 in Thunnus albacares (Bonnaterre) and T. obesus (Lowe); C. congruenta Lebedev & Mamaev, 1968 in Euthynnus affinis (Cantor); C. forsteri Cribb, Daintith & Munday, 2000 in T. maccoyii (Castelnau) and T. thynnus (L.) (see Bullard et al, 2004); C. opisthorchis Ogawa, Ishimaru, Shirakashi, Takami & Grabner, 2011 in T. orientalis (Temminck & Schlegel) and T. thynnus (see Ogawa et al, 2011); and C. orientalis Ogawa, Tanaka, Sugihara & Takami, 2010 in T. maccoyii and T. orientalis (see Shirakashi et al, 2013). All these species have been recorded in the Pacific Ocean, although C. forsteri was also collected in T. thynnus from the North Atlantic and the Mediterranean and C. opisthorchis in T. thynnus from the Mediterranean (Aiken et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Morphological characterisation and identification of four species of Cardicola Short, 1953 (Trematoda: Aporocotylidae) infecting the Atlantic bluefin tuna Thunnus thynnus (L.) in the Mediterranean Sea

et al. 2015

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Blood flukes of the genus Cardicola Short, 1953 are considered the most potentially pathogenic parasites in bluefin tuna cultures. Morphological study and genetic analyses of the ribosomal internal transcribed spacer ITS-2 and the mitochondrial cytochrome c oxidase 1 (cox1) gene fragments revealed the occurrence of four aporocotylid species (C. forsteri Cribb, Daintith & Munday, 2000, C. orientalis Ogawa, Tanaka, Sugihara & Takami, 2010, C. opisthorchis Ogawa, Ishimaru, Shirakashi, Takami & Grabner, 2011 and Cardicola sp.) in 421 Thunnus thynnus (L.) from the Western Mediterranean (274 fished from the wild and 147 from sea-cages). Cardicola opisthorchis was the most abundant species, with higher prevalence in the cage-reared fish than in those fished in the wild (21 vs 6%, p < 0.05). Adults of three species were recovered: C. forsteri from both gills and heart, C. opisthorchis from heart and C. orientalis from gills. The secondary gill lamellae were profusely infected by eggs of C. orientalis. A fourth species was found in four tunas, based on the molecular analyses of eggs apparently indistinguishable in size and shape from the eggs of C. orientalis. The findings provided evidence that infections with Cardicola spp. differed in relation to locality, host origin (wild vs cage-reared) and site of infection. It is necessary to estimate the possible different pathogenic effects of each species of Cardicola in order to take appropriate control measures.

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“…living specimens were pipetted onto a glass slide and heatkilled with an EtOH burner flame before being transferred to a vial of 5% neutral buffered formalin, rinsed thoroughly with distilled water, stained overnight in Van Cleave's hematoxylin with several additional drops of Ehrlich's hematoxylin, made basic in 70% ethanol with lithium carbonate and butyl-amine, dehydrated, cleared in clove oil and permanently mounted in Canada balsam (Bullard and Overstreet 2004). The five specimens for scanning electron microscopy (sEM) were dehydrated, immersed in hexamethyldisilazane for 30 min, air dried for 45 min and sputter-coated with 15 nm gold palladium.…”

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confidence: 99%

Cardicola langeli sp. n. (Digenea: Aporocotylidae) from heart of sheepshead, Archosargus probatocephalus (Actinopterygii: Sparidae) in the Gulf of Mexico, with an updated list of hosts, infection sites and localities for Cardicola spp.

Cardicola forsteri (Digenea: Sanguinicolidae) from the Heart of a Northern Bluefin Tuna, Thunnus thynnus (Scombridae), in the Northwest Atlantic Ocean

Cited by 22 publications

References 6 publications

Molecular evidence for cosmopolitan distribution of platyhelminth parasites of tunas (Thunnus spp.)

Molecular evidence for cosmopolitan distribution of platyhelminth parasites of tunas (Thunnus spp.)

Morphological characterisation and identification of four species of Cardicola Short, 1953 (Trematoda: Aporocotylidae) infecting the Atlantic bluefin tuna Thunnus thynnus (L.) in the Mediterranean Sea

Cardicola langeli sp. n. (Digenea: Aporocotylidae) from heart of sheepshead, Archosargus probatocephalus (Actinopterygii: Sparidae) in the Gulf of Mexico, with an updated list of hosts, infection sites and localities for Cardicola spp.

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