Characterization of Clinostomum sp. (Trematoda: Clinostomidae) infecting cormorants in south-eastern Australia

Shamsi, Shokoofeh; Barton, Diane P.; Day, Scott; Masiga, Juliet; Zhu, Xiaocheng; McLellan, Matthew

doi:10.1007/s00436-021-07246-0

Cited by 8 publications

(5 citation statements)

References 44 publications

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“…in the present study is the first report in Australia. The metacercaria and immature adult of this taxon has been previously reported from cormorants and fish in the same geographical area ( Shamsi et al, 2021a , Shamsi et al, 2021b ) and from firetail gudgeon ( Hypseleotris galii ) in the Brisbane area in Queensland, Australia. The life cycle of Clinostomum involves multiple hosts.…”

Section: Discussionsupporting

confidence: 60%

Occurrence of digenean parasites in freshwater snails in the Murrumbidgee catchment area, Australia

Shamsi

Banfield

Francis

et al. 2023

Food and Waterborne Parasitology

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Section: Discussionsupporting

confidence: 60%

Occurrence of digenean parasites in freshwater snails in the Murrumbidgee catchment area, Australia

Shamsi

Banfield

Francis

et al. 2023

Food and Waterborne Parasitology

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“…The natural definitive hosts are fish-eating birds (Shamsi et al 2013(Shamsi et al , 2021aRosser et al 2018), but the link between metacercaria and adult stages is usually difficult to establish using solely morphological criteria (Jousson et al 1998). The present study linked specifically indistinguishable metacercariae of Clinostomum spp.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Clinostomum (Digenea: Clinostomidae) spp. in India

et al. 2022

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Platyhelminths belonging to the family Clinostomidae (Digenea) have a worldwide distribution and are known to infect piscivorous birds through their intermediate hosts, usually fish species. In the present study, clinostome metacercariae were collected from fish hosts, including Channa punctata (Bloch 1793) (n = 25) and Trichogaster fasciata Bloch and Schneider 1801 (n = 25), from a freshwater system in India. The experimental infection of cattle egrets, Ardea (Bubulcus) ibis Linnaeus 1758, with some of the live metacercariae found in the present study was successful. Live adult parasites were obtained from the buccal cavity of the birds. Both metacercaria and adult specimens were subjected to molecular studies to obtain the sequences of 28S, ITS1, and ITS2 (nuclear rDNA) regions. The parasites were found to belong to three species, Clinostomum giganticum Agarwal 1959; C. piscidium Southwell and Prashad 1918; and Euclinostomum heterostomum (Rudolphi 1809). Phylogenetic analyses of the sequences obtained from the adults and metacercariae established a link between the metacercariae in the fish hosts and adults in the avian host, which is essential to elucidate their partial life cycle and specify morphological characteristics in the metacercarial stage.

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“…Larval strigeids are often difficult to identify and, in some instances, the species cannot be identified with certainty without undertaking experimental infections to retrieve the adult stage [30]. As the taxonomy of digeneans is based on the morphology of the adult, and many of the larval stages bear no resemblance to the adult, it is often difficult to link larval and adult stages [31,32]. Genetic sequencing provides confirmation of species identity of larval stages [31], but only when the corresponding adult stage has been identified and sequenced.…”

Section: Discussionmentioning

confidence: 99%

The Presence of a Parasite in the Head Tissues of a Threatened Fish (Bidyanus bidyanus, Terapontidae) from South-Eastern Australia

Barton,

Kopf,

Zhu

et al. 2023

Pathogens

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The silver perch, Bidyanus bidyanus (Mitchell) (Terapontidae) is a freshwater fish, endemic to the Murray-Darling river system in south-eastern Australia. Population declines have led to the fish being listed as critically endangered by the Australian Government. Knowledge about parasites and diseases of wild populations of freshwater fish are limited in Australia. During an examination of wild-caught silver perch, digenean mesocercaria were observed in the head tissues. A total of five of the 11 silver perch collected from the Wakool River, New South Wales, were infected with mesocercaria. All mesocercaria were found in the head tissues; no mesocercaria were found encysted in the eye lens. The mesocercaria were found to belong to the family Strigeidae based on the sequences of their internal transcribed spacer (ITS) region. The lack of comparable sequences of strigeid digeneans from Australian hosts precludes being able to determine if the mesocercaria found in this study are a new species or representatives of an already described species. However, genetic results confirm that this is a different species to other digeneans previously described from silver perch, thus increasing the number of digeneans reported from B. bidyanus to three species. The presence of digenean mesocercaria in the head tissues of a wild population of silver perch, as found in the present study, is of potential conservation significance. Given the critically endangered conservation status of B. bidyanus, and previous evidence of strigeid infection altering fish behaviour, ecology, and predation mortality, further research on the potential impacts of infection on wild populations is warranted.

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Characterization of Clinostomum sp. (Trematoda: Clinostomidae) infecting cormorants in south-eastern Australia

Cited by 8 publications

References 44 publications

Occurrence of digenean parasites in freshwater snails in the Murrumbidgee catchment area, Australia

Occurrence of digenean parasites in freshwater snails in the Murrumbidgee catchment area, Australia

Characterization of Clinostomum (Digenea: Clinostomidae) spp. in India

The Presence of a Parasite in the Head Tissues of a Threatened Fish (Bidyanus bidyanus, Terapontidae) from South-Eastern Australia

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