Scientia Marina, Vol 84, No 3 (2020)

Presettlement schooling behaviour of a rocky fish in a shallow area. Is it related to local environmental conditions?

Pamela Palacios-Fuentes
Programa de Doctorado en Ciencias Biológicas mención Ecología, Pontificia Universidad Católica de Chile, Chile

Macarena Díaz-Astudillo
Programa de Doctorado en Oceanografía, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Chile

María Antonia Reculé
Laboratorio de Ictioplancton (LABITI), Facultad de Ciencias del Mar y de Recursos Naturales, Universidad de Valparaíso,, Chile

F. Patricio Ojeda
Departamento de Ecología, Pontificia Universidad Católica de Chile, Chile

Mauricio F. Landaeta
Centro de Observación Marino para Estudios de Riesgos del Ambiente Costero (COSTA-R), Universidad de Valparaíso, Spain


This study evaluates the swimming behaviour of pre-settled fish larvae of the triplefin Helcogrammoides chil­ensis (Tripterygiidae) in relation to local environmental conditions. Larval aggregations were recorded on rocky reefs off central Chile during the austral summer of 2014 and 2016 to describe their swimming behaviour (i.e. solitary, shoaling, schooling) and relate it to in situ water temperature, wind stress, wind speed and turbulence. Shoaling and solitary behaviour were influenced only by wind-induced turbulence in 2014 and by seawater temperature and wind stress in 2016. Schooling behaviour was not influenced by any of the environmental variables. In situ swimming behaviour of fish larvae has been little investigated, and this work proposes a non-invasive in situ methodology for studying fish larval behaviour.


shoaling; reef fish; settlement; seawater temperature; local winds; turbulence

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