First report of vampyrellid predator-prey dynamics in a marine system

Alves-de-Souza, Catharina; Benevides, Tatiane S.; Menezes, Mariangela; Jeanthon, Christian; Guillou, Laure

Abstract

We report for the first time the in situ dynamics of a vampyrellid in a marine system. A high sampling frequency (twice-weekly) was applied in a tropical eutrophic lagoon (Rio de Janeiro, Brazil) for 5 years (2012-2016). The vampyrellid Hyalodiscus sp. specifically fed on the diatom Chaetoceros minimus during a short time window (similar to 3 months), although the prey was intermittently detected as the dominant phytoplanktonic species over a longer period (similar to 1 year). A classic Lotka-Volterra predator-prey dynamic was observed between the two partners, with a significant modification of the short-term oscillations of the prey. Specific abiotic preferences (i.e., relatively low temperature, intermediate salinity, and stratified conditions) associated with prey availability seemed to define this narrow temporal window of occurrence. Our results suggest that vampyrellids can be ecologically relevant in marine pelagic systems, with their impact on planktonic dynamics strongly depending on complex interactions between both biotic and abiotic factors.

Más información

Título según WOS: ID WOS:000461719600020 Not found in local WOS DB
Título de la Revista: ISME JOURNAL
Volumen: 13
Número: 4
Editorial: OXFORD UNIV PRESS
Fecha de publicación: 2019
Página de inicio: 1110
Página final: 1113
DOI:

10.1038/s41396-018-0329-0

Notas: ISI