Publications des scientifiques de l'IRD

Capello Manuela, Soria Marc, Cotel Pascal, Deneubourg J.L., Dagorn Laurent. (2011). Quantifying the interplay between environmental and social effects on aggregated-fish dynamics. Plos One, 6 (12), p. e28109. ISSN 1932-6203.

Titre du document
Quantifying the interplay between environmental and social effects on aggregated-fish dynamics
Année de publication
2011
Type de document
Article référencé dans le Web of Science WOS:000298366600009
Auteurs
Capello Manuela, Soria Marc, Cotel Pascal, Deneubourg J.L., Dagorn Laurent
Source
Plos One, 2011, 6 (12), p. e28109 ISSN 1932-6203
Demonstrating and quantifying the respective roles of social interactions and external stimuli governing fish dynamics is key to understanding fish spatial distribution. If seminal studies have contributed to our understanding of fish spatial organization in schools, little experimental information is available on fish in their natural environment, where aggregations often occur in the presence of spatial heterogeneities. Here, we applied novel modeling approaches coupled to accurate acoustic tracking for studying the dynamics of a group of gregarious fish in a heterogeneous environment. To this purpose, we acoustically tracked with submeter resolution the positions of twelve small pelagic fish (Selar crumenophthalmus) in the presence of an anchored floating object, constituting a point of attraction for several fish species. We constructed a field-based model for aggregated-fish dynamics, deriving effective interactions for both social and external stimuli from experiments. We tuned the model parameters that best fit the experimental data and quantified the importance of social interactions in the aggregation, providing an explanation for the spatial structure of fish aggregations found around floating objects. Our results can be generalized to other gregarious species and contexts as long as it is possible to observe the fine-scale movements of a subset of individuals.
Plan de classement
Limnologie biologique / Océanographie biologique [034] ; Ecologie, systèmes aquatiques [036]
Description Géographique
REUNION
Localisation
Fonds IRD [F B010054277]
Identifiant IRD
fdi:010054277
Contact