Population genetic structure of the intertidal kinorhynch Echinoderes marthae (Kinorhyncha; Cyclorhagida; Echinoderidae) across the Sao Sebastiao Channel, Brazil

Autor(es)

Randso, Phillip V. ^[1] ; Domenico, Maikon D. ^[2] ; Herranz, Maria ^{[3, 4]} ; Lorenzen, Eline D. ^[1] ; Sorensen, Martin V. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Copenhagen, Nat Hist Museum Denmark, Copenhagen - Denmark

^[2] Univ Fed Parana, Ctr Marine Studies, Curitiba, Parana - Brazil

^[3] Univ British Columbia, Dept Zool, Vancouver, BC - Canada

^[4] Univ British Columbia, Dept Bot, Vancouver, BC - Canada

• Tipo de documento: Artigo Científico
• Fonte: Proceedings of the Biological Society of Washington; v. 131, n. 1, p. 36-46, JAN 15 2018.
• Citações Web of Science: 2

Resumo

Barriers to gene flow in marine environments vary between species and are highly dependent on dispersal ability and habitat discontinuity. Intertidal sand and mud flats are discontinuous areas, separated by other habitat types along a coastline or by subtidal zones. The Sao Sebastiao Channel in eastern Brazil, which is situated between Rio de Janeiro and Sao Paulo, harbors two intertidal mud flats where populations of the kinorhynch Echinoderes marthae are found, one on the mainland (Araca Bay) and one on Sao Sebastiao Island (Ilhabela). Here, we investigated the genetic structure of two E. marthae populations across the Sao Sebastiao Channel, in order to contribute to the ongoing debate on biogeography of meiobenthic animals. Based on 628 bp of the mitochondrial CO1 gene, we find that E. marthae shows low levels of structure in the Sao Sebastiao Channel (F-ST = 0.165), and find evidence of recent demographic expansion across populations. (AU)

• Processo FAPESP: 11/50317-5 - Biodiversidade e funcionamento de um ecossistema costeiro subtropical: subsídios para gestão integrada
• Beneficiário: Antonia Cecília Zacagnini Amaral
• Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 12/08581-0 - Anelídeos intersticiais: sistemática e filogenia de uma fauna negligenciada
• Beneficiário: Maikon Di Domenico
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado