NDLI: Description and life-cycle of Thrinascotrema brisbanica n. g., n. sp. (Digenea: Plagiorchiida), a parasite of the freshwater turtle Elseya latisternum from Australia, and the erection of the family Thrinascotrematidae

Content Provider	Springer Nature Link
Author	Sue, Lindsay Jue Platt, Thomas R.
Copyright Year	1999
Abstract	A new genus and species, Thrinascotrema brisbanica, is proposed to accommodate a plagiorchiidan trematode parasitic in the stomach of the freshwater turtle Elseya latisternum. The distinctive taxonomic features of the parasite are the shape and extent of the excretory bladder, and the stenostomate arrangement of the excretory collecting ducts in the adult, cercaria and metacercaria together with a cercarial protonephridial formula of 2(12+12+12)+(12+12+12). The life-cycle is three- host and aquatic. The pulmonate snail Glyptophysa gibbosa served as both a first and second intermediate host and tadpoles of Limnodynastes peronii, Adelotus brevis and Bufo marinus, and the snail Austropeplea lessoni also served as second intermediate hosts. Eggs were fully embryonated and infective when laid, but did not hatch until eaten by the snail. Cercariae first emerged 55 days after infection at 24-28 °C. They were sluggish swimmers and survived for about 48 hr. They attached firmly to the skin of snails and tadpoles on contact and began to penetrate the skin after a short exploratory migration. Metacercariae survived in snails and tadpoles for at least 3 months. It is concluded that Thrinascotrema is best placed within a new family, the Thrinascotrematidae (Digenea: Plagiorchiida), based on the unusual morphology of the excretory system.
Starting Page	217
Ending Page	227
Page Count	11
File Format	PDF
ISSN	01655752
Journal	Systematic Parasitology
Volume Number	43
Issue Number	3
e-ISSN	15735192
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Plant Sciences Animal Anatomy Morphology Histology
Content Type	Text
Resource Type	Article
Subject	Parasitology

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Description and life-cycle of Thrinascotrema brisbanica n. g., n. sp. (Digenea: Plagiorchiida), a parasite of the freshwater turtle Elseya latisternum from Australia, and the erection of the family Thrinascotrematidae

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Description and life-cycle of Thrinascotrema brisbanica n. g., n. sp. (Digenea: Plagiorchiida), a parasite of the freshwater turtle Elseya latisternum from Australia, and the erection of the family Thrinascotrematidae