Digenea in notothenioid fish in the Beagle Channel (Magellanic sub-region, sub-Antarctica)

Jeżewski, Witold; Zdzitowiecki, K.; Laskowski, Zdzisław

doi:10.2478/s11686-014-0208-4

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…Elytrophalloides oatesi (Hemiuridae) is frequently detected in Antarctic fish (e.g. N. nudifrons ) [ 31 ] but it is not endemic to the Southern Ocean [ 69 ] and the reported host range is wide [ 37 , 69 , 70 ]. It is not host-specific to Nototheniidae and it does not imply a restriction of the host to the Southern Ocean.…”

Section: Discussionmentioning

confidence: 99%

Parasites of Three Closely Related Antarctic Fish Species (Teleostei: Nototheniinae) from Elephant Island

et al. 2021

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Background Studies of parasite communities and patterns in the Antarctic are an important knowledge base with the potential to track shifts in ecological relations and study the effects of climate change on host–parasite systems. Endemic Nototheniinae is the dominant fish group found in Antarctic marine habitats. Through their intermediate position within the food web, Nototheniinae link lower to higher trophic levels and thereby also form an important component of parasite life cycles. The study was set out to gain insight into the parasite fauna of Nototheniops larseni, N. nudifrons and Lepidonotothen squamifrons (Nototheniinae) from Elephant Island (Antarctica). Methods Sampling was conducted at three locations around Elephant Island during the ANT-XXVIII/4 expedition of the research vessel Polarstern. The parasite fauna of three Nototheniine species was analysed, and findings were compared to previous parasitological and ecological research collated from a literature review. Results All host species shared the parasites Neolebouria antarctica (Digenea), Corynosoma bullosum (Acanthocephala) and Pseudoterranova decipiens E (Nematoda). Other parasite taxa were exclusive to one host species in this study. Nototheniops nudifrons was infected by Ascarophis nototheniae (Nematoda), occasional infections of N. larseni with Echinorhynchus petrotschenkoi (Acanthocephala) and L. squamifrons with Elytrophalloides oatesi (Digenea) and larval tetraphyllidean Cestoda were detected. Conclusion All examined fish species’ parasites were predominantly euryxenous regarding their fish hosts. The infection of Lepidonotothen squamifrons with Lepidapedon garrardi (Digenea) and Nototheniops larseni with Echinorhynchus petrotschenkoi represent new host records. Despite the challenges and limited opportunities for fishing in remote areas, future studies should continue sampling on a more regular basis and include a larger number of fish species and sampling sites within different habitats.

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Section: Discussionmentioning

confidence: 99%

Parasites of Three Closely Related Antarctic Fish Species (Teleostei: Nototheniinae) from Elephant Island

et al. 2021

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“…Posteriorly, the parasites (e.g. digeneans, cestodes, nematodes, acanthocephalans) were identified, counted and determined according to the morphological descriptions of species given in different specialized literature (Zdzitowiecki, 1990(Zdzitowiecki, , 1997Paggi et al, 2000;Rocka, 2004;Laskowski & Jeżewski, 2008;Jeżewski et al, 2014;Laskowski & Rocka, 2014;Paschoal et al, 2014;Laskowski & Zdzitowiecki, 2017). The abundance of parasitic species in each host specimen was recorded and then averaged for each fish species sample.…”

Section: Fish and Parasite Samplesmentioning

confidence: 99%

Endoparasitic diversity from the Southern Ocean: is it really low in Antarctic fish?

Muñoz

Cartes

2020

J. Helminthol.

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The biodiversity and composition of endoparasites in fish obtained from the Antarctic and subantarctic zones are compared in this study. Several fish were collected in the summer from Antarctica (King George Island) and the Southern Pacific coast (Strait of Magellan and Almirante Montt Gulf). This database was complemented with published information on fish endoparasite communities from both zones, with specimens of fish sample size n ≥ 15. Thus, 31 fish species were analysed in this study, which altogether had 79 parasite species. Diversity indices were calculated for the parasite community of each fish species. Then they were compared between the Antarctic and subantarctic zones. Parasite species composition and host specificity (as the number of fish species used by a parasite species) were also analysed and compared between zones. The diversity indices and the abundance of parasites were significantly higher in the Antarctic than the subantarctic fish. Few parasite species (7.6%) were shared between fish from both zones, showing significant differences in parasite composition. Antarctic parasites were less host-specific than subantarctic parasites, which allowed the coexistence of several parasite species in the fish. The high parasite abundance in Antarctic fish could trigger sympatric speciation in certain parasitic lineages or the exploitation of new resources, resulting in more parasite species than those in subantarctic environments. The high abundance of Antarctic parasites implies different methods and rates of transmission than those of subantarctic parasites. In addition, more alternative fish hosts were used by the Antarctic than subantarctic parasites. This altogether indicates that host–parasite interaction dynamics significantly differ between the Antarctic and subantarctic systems.

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“…the genera Bovichtus Valenciennes, Cottoperca Steindachner and Halaphritis Last, Balushkin & Hutchins) is poorly known. Only three parasite species have been reported from bovichtid fish, the hirudinean Dollfusobdella kaikourae Burreson & Williams, 2008 described from Bovichtus variegatus Richardson off New Zealand (Burreson & Williams, 2008) and two digeneans, Elytrophalloides oatesi (Leiper & Atkinson, 1914) described from Cottoperca gobio (Günther) and C. trigloides (Forster) in the southern Indian Ocean and sub-Antarctic (Bray, 1990) and Stenakron kerguelense Prudhoe & Bray, 1973 from C. trigloides in the subAntarctic (Je_ zewski et al, 2014).…”

Section: Introductionmentioning

confidence: 98%

A new species of Bothriocephalus Rudolphi, 1808 (Eucestoda: Bothriocephalidea) from the channel bull blenny Cottoperca gobio (Günther) (Perciformes: Bovichtidae) on the Patagonian shelf off Argentina

et al. 2015

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Bothriocephalus timii n. sp. is the first tapeworm species reported from a bovichtid fish. The new species was commonly found (prevalence 85%) in the intestine of Cottoperca gobio (Günther) collected on the Patagonian shelf off Argentina. It is characterised by a strobila with segments and proglottides usually longer than wide, having posterolateral wing-like expansions with a medial notch on both the dorsal and ventral surfaces; a scolex with an apical disk; elongate bothria opening posteriorly, with laterally and longitudinally extended convex lappets; testes 42-185 in number, in one layer, arranged in two lateral continuous bands along the strobila; an elongate cirrus-sac, situated obliquely, with the proximal part curved anteriolaterally; and an ovary which is usually butterfly-shaped. The new species is morphologically similar to B. bengalensis Devi, 1975 from Carangoides plagiotaeniata Bleeker, B. branchiostegi Yamaguti, 1952 from Branchiostegus japonicus Houttuyn, B. carangis Yamaguti, 1968 from C. ferdau Forsskål and B. gadellus Blend & Dronen, 2003 from Gadella imberbis (Vaillant) based on the presence of posterolateral wing-like expansions with a medial notch on dorsal and ventral surfaces of segments and proglottides along the strobila. Bothriocephalus timii n. sp. differs from B. bengalensis, B. branchiostegi and B. carangis in the absence of a vaginal sphincter and from B. gadellus in the number of testes and the size of scolex. Unpublished molecular data suggest that B. timii is most closely related to B. australis Kuchta, Scholz & Justine, 2009 from Platycephalus spp. and B. scorpii (Müller, 1776) from Myoxocephalus scorpius (Linnaeus). The genus Indobothrium Sedova & Gulyaev, 2009 is herein considered a junior synonym of Bothriocephalus Rudolphi, 1808.

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Digenea in notothenioid fish in the Beagle Channel (Magellanic sub-region, sub-Antarctica)

Cited by 7 publications

References 12 publications

Parasites of Three Closely Related Antarctic Fish Species (Teleostei: Nototheniinae) from Elephant Island

Parasites of Three Closely Related Antarctic Fish Species (Teleostei: Nototheniinae) from Elephant Island

Endoparasitic diversity from the Southern Ocean: is it really low in Antarctic fish?

A new species of Bothriocephalus Rudolphi, 1808 (Eucestoda: Bothriocephalidea) from the channel bull blenny Cottoperca gobio (Günther) (Perciformes: Bovichtidae) on the Patagonian shelf off Argentina

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