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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Convergent evolution: A new subfamily for bipaliin-like Chilean land planarians (platyhelminthes)

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Author(s):
Almeida, Ana Laura [1] ; Francoy, Tiago Mauricio [2] ; Alvarez-Presas, Marta [3] ; Carbayo, Fernando [4]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Museu Zool, Sao Paulo - Brazil
[2] Univ Sao Paulo, Escola Artes Ciencias & Humanidades, Sao Paulo - Brazil
[3] Univ Bristol, Sch Biol Sci, 24 Tyndall Ave, Bristol BS8 1TQ, Avon - England
[4] Univ Sao Paulo, Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: ZOOLOGICA SCRIPTA; v. 50, n. 4, p. 500-508, JUL 2021.
Web of Science Citations: 0
Abstract

The monotypic genus of land planarians Timyma (Rhynchodeminae, Geoplanidae) has been suggested to be a relict that could reflect a pre-Tertiary Antarctic connection between South America and Australia and New Zealand. Two species belonging to this genus, Timyma juliae E. M. Froehlich, 1978 and Timyma olmuensis Almeida \& Carbayo sp. n., are (re)described herein. Both species present ventral testes and a semilunate headplate, the same as the members of the Oriental subfamily Bipaliinae. Timyma olmuensis Almeida \& Carbayo sp. n. is studied by means of an integrative approach. Two nuclear gene fragments (28S, EF) and a mitochondrial gene fragment (COI) were sequenced. Phylogenetic analyses pointed out that Timyma is the sister-group of the Neotropical Geoplaninae and is phylogenetically distant from Bipaliinae, contradicting the hypothesis of Timyma as a South American relict of a Gondwanan taxon. These results indicate that the headplate evolved independently in Timyma and Bipaliinae. Morphological data reinforce this view. Accordingly, Timyminae subfam. n. is proposed for Timyma and a new diagnosis for the genus is proposed. (AU)

FAPESP's process: 19/12357-7 - Integrative taxonomic studies of Neotropical land planarians (Platyhelminthes, Tricladida), with emphasis on the Brazilian and Chilean diversity, and their areas of endemisms in the Atlantic Forest
Grantee:Fernando Jesús Carbayo Baz
Support Opportunities: Regular Research Grants