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  An intriguing, new planarian species from Tasmania, with a discussion on protandry in triclad flatworms (Platyhelminthes, Tricladida).

Sluys, R., Vila Farre, M., Rink, J. C., & Rasko, J. E. J. (2018). An intriguing, new planarian species from Tasmania, with a discussion on protandry in triclad flatworms (Platyhelminthes, Tricladida). Acta Zoologica, 99(4), 404-414. doi:10.1111/azo.12243.

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3189120.pdf (Publisher version), 2MB
 
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Sluys, R., Author
Vila Farre, M.1, Author              
Rink, J. C.1, Author              
Rasko, J. E. J., Author
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1Department of Tissue Dynamics and Regeneration, MPI for Biophysical Chemistry, Max Planck Society, ou_3181978              

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Free keywords: life cycle; new species; Platyhelminthes; protandry; reproductive development; Tasmania; Tricladida
 Abstract: An account is given of an unusual new species of freshwater planarian from the Hartz Mountains in Tasmania, Australia, Romankenkius flaccidus Sluys, sp. nov. The species is characterized, among other features, by an asymmetrical penis papilla, an extremely large, elongated copulatory bursa, and by the absence of testes in animals with fully developed male and female copulatory apparatus. Instigated by the sexual cycle of this new species, the study opportunely reviews whether planarian flatworms generally are simultaneous or sequentialin particular protandroushermaphrodites. It is concluded that real protandry does not occur in triclads and that even less extreme cases of sexual segregation, such as complete reduction of the testes or the more or less complete separation of male and female functionality as present in some species, have only sparsely and convergently evolved within the group of the triclad flatworms.

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Language(s): eng - English
 Dates: 2018-02-022018
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: DOI: 10.1111/azo.12243
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Title: Acta Zoologica
Source Genre: Journal
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Pages: - Volume / Issue: 99 (4) Sequence Number: - Start / End Page: 404 - 414 Identifier: -