Data/hora: 09/06/2024 09:23:29

Provedor de dados: | 5
País: | France

Título:

Proposal of a trophic relationship between Chaetognatha and Cnidaria based on Mitochondrial COI sequences

Proposta de relação trófica entre Chaetognatha e Cnidaria baseada em sequências COI do DNA Mitocondrial

Autores: | Da Mota Melo, Danielle Caroline; Costa Brandao, Manoela; De Albuquerque, Simone Maria; Neumann-leitão, Sigrid.
Data: | 2019
Ano: | 2019
Palavras-chave: | DNA barcode; Food item; Oceanic island; Tropical Atlantic; Zooplankton; Cytochrome oxidase subunit I gene.
Resumo: | This is the first study in Brazil to propose a trophic relationship between Chaetognatha and Cnidaria based on molecular data (COI gene - DNA barcode). Cnidaria COI sequences were detected in tissue samples from two specimens of Flaccisagitta enflata collected in the surroundings of Fernando de Noronha archipelago, Tropical Western Atlantic. The methodology used followed all the requirements for a safe molecular manipulation, making the possibility of contamination unlikely. A search carried in BLAST showed that both sequences provided here presented a combination of highest query coverage and match identity with Nemopilema nomurai (Cnidaria: Scyphozoa), supporting the hypothesis that they belong to a species of jellyfish. Since gelatinous taxa are known to integrate the broad diet of Chaetognatha, it is possible that F. enflata has ingested this type of item, which was not fully digested until the moment of sampling and was not visualized by the transparency method. Thus, the record of Scyphozoa by the COI marker suggests a trophic relationship between the respective taxon and F. enflata. Future studies using the association of markers as well as specific methodologies may constitute a new perspective on how to evaluate the trophic ecology of key zooplankton species, including the abundant F. enflata in the Atlantic ocean.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00628/74057/73490.pdf

DOI:10.32519/btcc.v19i1.2172

https://archimer.ifremer.fr/doc/00628/74057/

Formato: | application/pdf
Fonte: | Boletim Técnico Cientifico do CEPNOR / TROPICAL JOURNAL of Fisheries and Aquatic Sciences (1676-5664), 2019 , Vol. 19 , N. 1 , P. 9-14

Fonte:

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