Journal article
Feeding preferences of range-shifting and native herbivorous fishes in temperate ecosystems
Marine environmental research, Vol.172, 105508
2021
PMID: 34710739
Abstract
Temperate reefs are being tropicalized worldwide. In temperate Western Australia, a marine heatwave led to a regime shift from kelp (Ecklonia radiata) dominated to canopy-free reefs, together with an increase in tropical herbivorous fishes that contribute to keeping low kelp abundances and even prevent kelp reestablishment in northern regions. However, whether tropical herbivorous fishes prefer kelps over other seaweeds and/or whether this preference changes with latitude remains untested. Multiple-choice experiments (young kelp vs. other seaweeds) with tropical, subtropical and temperate herbivorous fishes show shifting species-specific preferences and fish-to-fish interference shifting with latitude (assays replicated in two regions four degrees of latitude apart). Against expectations, only the temperate Kyphosus sydneyanus preferred kelp over other seaweeds, but only in the lower latitude region. Siganus fuscescens, the most abundant tropical herbivore in both regions, preferred grazing on turf, suggesting that tropical fish might reduce kelp recruitment by consuming microscopic sporophytes in turf matrix.
Details
- Title
- Feeding preferences of range-shifting and native herbivorous fishes in temperate ecosystems
- Authors/Creators
- Sara Barrientos - Universidade da CoruñaSalvador Zarco-Perello - The University of Western AustraliaCristina Piñeiro-Corbeira - Universidade da CoruñaRodolfo Barreiro - Universidade da CoruñaThomas Wernberg - The University of Western Australia
- Publication Details
- Marine environmental research, Vol.172, 105508
- Publisher
- Elsevier Ltd
- Identifiers
- 991005592758007891
- Copyright
- © 2021 Elsevier Ltd.
- Murdoch Affiliation
- Harry Butler Institute
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.2 Marine Biology
- 3.2.509 Marine Algae
- Web Of Science research areas
- Environmental Sciences
- Marine & Freshwater Biology
- Toxicology
- ESI research areas
- Environment/Ecology