open access

https://hdl.handle.net/2115/92300

Interpopulation variation of behavioural and morphological traits that affect downstream displacement of the juvenile white‐spotted charr Salvelinus leucomaenis

英語

2023-05-12

Wiley

Journal of Fish Biology

102(5)

1168-1176

Downstream displacement is a riverine phenomenon in which organisms are advected by water flow from their home river section to a downstream area. Water flows that cause downstream displacement can be divided into two types: flood flows (Chapman & Kramer, 1991; Good et al., 2001; Meffe, 1984; Sato, 2006; Weese et al., 2011; Yamada & Wada, 2021) and flows under ordinary river conditions (i.e., ordinary flows; Lechner et al., 2016; Nagel et al., 2021; Thiesmeier & Schuhmacher, 1990). Although flood flows can cause catastrophic downstream displacement (Meffe, 1984; Sato, 2006; Weese et al., 2011), occurrences of such downstream displacement are often trait-dependent in riverine fishes (Blondel et al., 2021; Chapman & Kramer, 1991; Good et al., 2001; Meffe, 1984; Yamada & Wada, 2021). For example, smaller individuals are more likely to be displaced by strong floods from their home river section in populations of the molly Poecilia gillii (Kner 1863) (Chapman & Kramer, 1991) and the Trinidadian guppy Poecilia reticulata Peters 1859 (Blondel et al., 2021). Downstream displacement due to ordinary flows can also remove individuals with vulnerable traits from upstream populations. For example, reduced use of low-current habitats in the stickleback Gasterosteus aculeatus (Linnaeus 1758) is correlated with increased downstream displacement under ordinary flow conditions (Jiang et al., 2015). Thus, downstream displacement can be a general evolutionary pressure that removes individuals with low resistance to flow-driven displacement from their home river reaches (Yamada & Wada, 2021).

学術雑誌論文

Accepted Manuscript

This is the peer reviewed version of the following article: Yamada, H., & Wada, S. (2023). Interpopulation variation of behavioural and morphological traits that affect downstream displacement of the juvenile white-spotted charr Salvelinus leucomaenis. Journal of Fish Biology, 102(5), 1168–1176., which has been published in final form at https://doi.org/10.1111/jfb.15373. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

0022-1112

1095-8649