Goldsinny wrasse (<scp><i>Ctenolabrus rupestris</i></scp>) have a sex‐dependent magnetic compass for maintaining site fidelity

Cresci, Alessandro; Larsen, Torkel; Halvorsen, Kim Tallaksen; Durif, Caroline; Bjelland, Reidun M.; Browman, Howard I.; Skiftesvik, Anne Berit

doi:10.1111/fog.12569

Fisheries Oceanography

2021

DOI: 10.1111/fog.12569

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Goldsinny wrasse (Ctenolabrus rupestris) have a sex‐dependent magnetic compass for maintaining site fidelity

Alessandro Cresci

Torkel Larsen

Kim Tallaksen Halvorsen

et al.

Abstract: The goldsinny wrasse (Ctenolabrus rupestris) is a commercially important fish that inhabits coastal areas across the eastern Atlantic. This species moves from a shallow home territory along the coast into deeper waters in the autumn and winter and then returns to that same territory in the spring. Only male goldsinny wrasse

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Cited by 5 publications

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Cobble reef restoration in the Baltic Sea: Implications for life below water

Casabona,

Wilms,

Moltesen

et al. 2024

Aquatic Conservation

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Many coastal ecosystems are impacted by human pressures. Rocky reefs are structurally complex habitats that often support elevated fish abundance and marine biodiversity. In the Baltic Sea, rocky reefs have suffered from extraction for decades, leading to a decrease in hard substrata and complex habitat availability. This study is the first to restore cobble reefs and examine the biological effects. Baited and unbaited underwater video systems (BRUVS and UBRUVS, respectively) were employed across five years to monitor fish communities before reef deployment in 2017 and after reef deployment in 2018 and 2021. Using a before–after control‐impact (BACI) study design with replicates, relative abundances of Atlantic cod (Gadus morhua), herring (Clupeidae sp.), goldsinny wrasse (Ctenolabrus rupestris), two‐spotted goby (Pomatoschistus flavescens), shore crab (Carcinus maenas), and flatfish (Pleuronectiformes spp.) were compared across time and test sites. Comparisons were conducted across 1) restored cobble reefs, 2) natural cobble reefs, and 3) sand‐bottom test sites. This study found positive reef restoration effects revealed consistently by BRUVS and UBRUVS in three species: Atlantic cod, goldsinny wrasse and two‐spotted goby. These findings indicate that A) it is possible to restore cobble reefs and the associated mobile fauna, but also that B) continued marine extraction of cobble degrades complex habitats to the detriment of various marine species. To preserve Atlantic cod, and other sensitive species, we emphasize ecosystem restoration and warn against marine cobble reef extraction in vulnerable areas. Restoration of marine habitats may contribute to achieving the UN sustainable development goal covering life below water.

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Cobble reef restoration in the Baltic Sea: Implications for life below water

Casabona,

Wilms,

Moltesen

et al. 2024

Aquatic Conservation

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Coupling natural and electronic tags to explore spawning site fidelity and natal homing in northeast Atlantic European seabass

Luherne

Daverat

Woillez

et al. 2022

Estuarine, Coastal and Shelf Science

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The heat is on: sensitivity of goldsinny wrasse to global climate change

Perry,

Tamarit,

Morgenroth

et al. 2024

Conservation Physiology

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Unsustainable harvesting practices have drastically reduced fish populations globally and developments in aquaculture have increased. Unexpectedly, Atlantic salmon farming caused the opening of a new fishery in northern European countries, where previously unharvested mesopredatory species, like the goldsinny wrasse (Ctenolabrus rupestris), are captured for use as cleaner fish in pens along the coast and fjords. The goldsinny wrasse is widespread in coastal areas where it plays an ecologically important role as a predator of small invertebrates. Since climate change effects are particularly pronounced in coastal waters, it becomes urgent to understand how fish like the goldsinny will respond to global climate change, including the increasing frequency and intensity of marine heatwaves (MHWs), ocean freshening (OF) and ocean acidification (OA). To address this, we conducted a multi-stressor experiment exposing adult goldsinny to each stressor individually, as well as to all three combined. The results indicated that the goldsinny is highly affected by MHWs and extremely sensitive to a multi-stressor environment, with 34% and 53% mortality, respectively. Additionally, exposure to a MHW event, OF and multi-stressor conditions affected fish metabolism, with the highest standard metabolic- and maximum metabolic-oxygen consumption rates observed for the MHW treatment. Increases in oxidized glutathione (GSSG) and percent oxidized glutathione (% GSSG) in the livers, indicative of oxidative stress, were also seen in the MHW, OF and multi-stressor treatments. As a single stressor, OA showed no significant impacts on the measured parameters. This information is important for conservation of coastal marine environments, given the species’ important role in shallow-water habitats and for management of goldsinny or other mesopredatory fish harvested in coastal ecosystems. The sensitivity of the goldsinny wrasse to future stressors is of concern, and any potential reductions in abundance as a result of climate change may lead to cascade effects with ecosystem-wide consequences.

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Goldsinny wrasse (Ctenolabrus rupestris) have a sex‐dependent magnetic compass for maintaining site fidelity

Cited by 5 publications

References 39 publications

Cobble reef restoration in the Baltic Sea: Implications for life below water

Cobble reef restoration in the Baltic Sea: Implications for life below water

Coupling natural and electronic tags to explore spawning site fidelity and natal homing in northeast Atlantic European seabass

The heat is on: sensitivity of goldsinny wrasse to global climate change

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