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Genetic diversity and population structure of Synthesium pontoporiae (Digenea, Brachycladiidae) linked to its definitive host stocks, the endangered Franciscana dolphin, Pontoporia blainvillei (Pontoporiidae) off the coast of Brazil and Argentina

Published online by Cambridge University Press:  09 September 2013

J. Marigo ,
H.A. Cunha ,
C.P. Bertozzi ,
S.P. Souza ,
F.C.W. Rosas ,
M.J. Cremer ,
A.S. Barreto ,
L.R. de Oliveira ,
H.L. Cappozzo  and
A.L.S. Valente
...Show all authors
J. Marigo*
Affiliation:
Laboratório de Genética Molecular de Microorganismos, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brazil Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brazil Projeto BioPesca, Praia Grande, SP, Brazil
H.A. Cunha
Affiliation:
Laboratório de Biodiversidade Molecular (UFRJ)/Laboratório de Mamíferos Aquáticos e Bioindicadores (MAQUA, UERJ), Rio de Janeiro, RJ, Brazil
C.P. Bertozzi
Affiliation:
Projeto BioPesca, Praia Grande, SP, Brazil
S.P. Souza
Affiliation:
Instituto Terra & Mar, Ilhabela, SP, Brazil
F.C.W. Rosas
Affiliation:
Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil
M.J. Cremer
Affiliation:
Universidade da Região de Joinville, Joinville, SC, Brazil
A.S. Barreto
Affiliation:
Universidade do Vale do Itajaí, Balneário Camboriú, SC, Brazil
L.R. de Oliveira
Affiliation:
Laboratório de Ecologia de Mamíferos Universidade do Vale do Rio dos Sinos (UNISINOS), Grupo de Estudos de Mamíferos Aquáticos do Rio Grande do Sul (GEMARS), Porto Alegre, RS, Brazil
H.L. Cappozzo
Affiliation:
Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’ (MACN-CONICET)/Universidad Maimónides y Fundación Azara, CABA, Buenos Aires, Argentina
A.L.S. Valente
Affiliation:
Universidade Federal de Pelotas, Pelotas, RS, Brazil
C.P. Santos
Affiliation:
Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brazil
A.C.P. Vicente
Affiliation:
Laboratório de Genética Molecular de Microorganismos, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brazil
*
*E-mail: jumarigo@hotmail.com
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Abstract

Pontoporia blainvillei (Gervais and d'Orbigny, 1844) is an endangered small cetacean endemic to South America with four Franciscana Management Areas (FMA) recognized as different population stocks. The role of the intestinal parasite Synthesium pontoporiae (Digenea: Brachycladiidae) as a possible biological marker to differentiate P. blainvillei stocks was evaluated using nuclear and mitochondrial DNA markers. Internal transcribed sequence 1 and 2 (ITS1 and ITS2) regions of S. pontoporiae did not show intraspecific variability. The mitochondrial NADH dehydrogenase subunit 3 (ND3) and cytochrome oxidase subunit I (COI) gene sequences suggested lack of population structure in S. pontoporiae and population expansion. The apparent panmixia of S. pontoporiae may be due to the high mobility of one or more of its intermediary hosts. Alternatively, it may be due to the small sample size. This result is incongruent with the previously proposed FMA.

Type
Research Papers
Information
Journal of Helminthology , Volume 89 , Issue 1 , January 2015 , pp. 19 - 27
Copyright
Copyright © Cambridge University Press 2013 

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