Data/hora: 03/06/2024 10:57:28

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Symbolic Analysis of Plankton Swimming Trajectories: Case Study of Strobilidium sp. (Protista) Helical Walking under Various Food Conditions
Autores: | Vandromme, Pieter; Schmitt, François G.; Souissi, Sami; Buskey, Edward J.; Strickler, J. Rudi; Wu, Cheng-han; Hwang, Jiang-shiou.
Data: | 2010-08-20
Ano: | 2010
Palavras-chave: | Protista; Plankton behavior; Swimming states; Symbolic dynamics; Simulation.
Resumo: | The swimming behavior of the ciliate Strobilidium sp. was recorded using cinematographic techniques. A density of 20 ciliates/ml was used under 4 experimental food conditions: 121, 625, 3025, and 15,125 cells/ml of the dinoflagellate Gymnodinium sp. In total, 100 trajectories per experiment were recorded and analyzed. We classified this ciliate’s swimming trajectories into categories we called “helix”, “non-helix”, and “break”. These swimming states were identified using automated recognition of helices, based on values of swimming trajectory angles. We performed a symbolic analysis of the succession of swimming states which enabled discrimination between food concentration experiments, and provided a more-complete characterization of the swimming behavior. We found that helical swimming patterns first increased with food concentration then decreased with a corresponding increase in the numbers of breaks. Non-helical motions were related to high food concentrations. We further used these results to simulate a ciliate’s trajectories using a symbolic dynamic model to generate a sequence series. Helices were reconstructed using a model with 2 inputs: amplitude and period. This study shows that a methodology developed to describe copepod behavior can also be applied to characterize and simulate ciliate helical and non-helical swimming dynamics.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/00070/18171/15730.pdf
Editor: | Biodiversity Research Center, Academia Sinica
Relação: | http://archimer.ifremer.fr/doc/00070/18171/
Formato: | application/pdf
Fonte: | Zoological Studies (1021-5506) (Biodiversity Research Center, Academia Sinica), 2010-08-20 , Vol. 49 , N. 3 , P. 289-303
Fonte: | 2010 Biodiversity Research Center, Academia Sinica