Movement behaviour of large female yellow European eel (Anguilla anguilla L.) in a freshwater polder area
| Autor: | Stijn Van Hoey, Peter Goethals, Bart Aelterman, Johan Coeck, David Buysse, Pieterjan Verhelst, Ine Pauwels, Tom Moens, Ans Mouton, Jan Reubens |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
endocrine system animal structures Ecology biology 010604 marine biology & hydrobiology Space use Aquatic Science Silver eel biology.organism_classification 010603 evolutionary biology 01 natural sciences Late summer Fishery Critically endangered Habitat IUCN Red List 14. Life underwater Diel vertical migration Ecology Evolution Behavior and Systematics |
| Zdroj: | Ecology of Freshwater Fish. 27:471-480 |
| ISSN: | 0906-6691 |
| Popis: | Due to a recruitment decline of more than 90% in 30 years, the European eel (Anguilla anguilla L.) has been classified by IUCN as critically endangered. Although the species has been studied intensively to obtain knowledge to improve management, studies about the resident yellow stage are relatively scarce. In this study, 52 large female yellow eels were tagged with acoustic transmitters in a Belgian polder system and tracked by a network of 23 automatic listening stations. We studied both circadian and seasonal movement patterns and the effect of environmental variables on these patterns. Large female yellow eels were most active at night in late summer and early autumn. A generalised linear mixed model showed that their movement is only slightly influenced by environmental variables. Moreover, as yellow eels show high site fidelity (i.e., the majority was detected only in the habitat type of their catch-release location), they do not encounter many human-induced connectivity problems in polder systems, which makes these systems highly suitable as eel growth habitat. These results can contribute to an effective eel management regarding habitat protection and restoration. |
| Databáze: | OpenAIRE |
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