Effects of shady environments on fish collective behavior.

Autor: Ribeiro HV; Departamento de Física, Universidade Estadual de Maringá, Maringá, PR, 87020-900, Brazil. hvr@dfi.uem.br., Acre MR; U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO, 65201, USA. macre@usgs.gov., Faulkner JD; U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO, 65201, USA., da Cunha LR; Departamento de Física, Universidade Estadual de Maringá, Maringá, PR, 87020-900, Brazil., Lawson KM; Department of Biological Sciences, Auburn University, 101 Rouse Life Sciences Building, Auburn, AL, 36849, USA., Wamboldt JJ; U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI, 54603, USA., Brey MK; U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI, 54603, USA., Woodley CM; U.S. Army Corps of Engineers, Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, 39180, USA., Calfee RD; U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO, 65201, USA.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2022 Oct 25; Vol. 12 (1), pp. 17873. Date of Electronic Publication: 2022 Oct 25.
DOI: 10.1038/s41598-022-22515-3
Abstrakt: Despite significant efforts devoted to understanding the underlying complexity and emergence of collective movement in animal groups, the role of different external settings on this type of movement remains largely unexplored. Here, by combining time series analysis and complex network tools, we present an extensive investigation of the effects of shady environments on the behavior of a fish species (Silver Carp Hypophthalmichthys molitrix) within earthen ponds. We find that shade encourages fish residence during daylight hours, but the degree of preference for shade varies substantially among trials and ponds. Silver Carp are much slower and exhibit lower persistence in their speeds when under shade than out of it during daytime and nighttime, with fish displaying the highest persistence degree and speeds at night. Furthermore, our research shows that shade affects fish schooling behavior by reducing their polarization, number of interactions among individuals, and the stability among local neighbors; however, fish keep a higher local degree of order when under shade compared to nighttime positions.
(© 2022. The Author(s).)
Databáze: MEDLINE
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