Valve-gaping behavior of raft-cultivated mussels in the Ría de Arousa, Spain

Comeau, Luc A.; Babarro, José M. F.; Longa, Ángeles; Pad́ın, X. A.

doi:10.1016/j.aqrep.2017.12.005

Cited by 53 publications

(52 citation statements)

References 33 publications

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“…These findings indicate that the grazing impact of bivalves in shallow water locations may frequently result in depletion of phytoplankton and subsequently closure of the valves and cessation of filtering activity. This interpretation is supported by a recent study by Comeau et al [35] who monitored the valve-opening behaviour of raft-cultivated M. galloprovincialis and found that valves were open 97.5% of the time. In agreement with this, our data (Table 1) show that M. edulis apparently utilises its filtration potential under natural conditions, as long as the Chl a level is above the lower trigger concentration.…”

Section: Datesupporting

confidence: 62%

In Situ Filtration Rates of Blue Mussels (Mytilus edulis) Measured by an Open-Top Chamber Method

Lüskow¹,

Riisgård²

2018

OJMS

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Blue mussels, Mytilus edulis, form dense beds of both commercial and ecological importance, and many attempts have been made to determine their filtration rate. The total time in which mussels actually utilise their filtration capacity in nature varies greatly, making in situ methods for filtration rate measurements relevant. Further, it is being debated to what extend filtration rates measured in the laboratory using cultivated algal cells may apply for mussels in nature. In the present study, we have used an open-top chamber setup in order to allow repeated in situ filtration rate measurements of M. edulis using ambient natural phytoplankton and free-living bacteria. We found that the in situ measured filtration rates are comparable to filtration rates obtained in laboratory studies using different methods and controlled diets of cultivated algal cells. Further, we found that the retention efficiency of free-living bacteria was between 22.2% and 29.9%, in good agreement with values from laboratory studies. Our findings support the assumption that mussels in nature tend to use their filtration capacity when the phytoplankton concentration is above a certain lower trigger level.

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Section: Datesupporting

confidence: 62%

In Situ Filtration Rates of Blue Mussels (Mytilus edulis) Measured by an Open-Top Chamber Method

Lüskow¹,

Riisgård²

2018

OJMS

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“…Although different species might have evolved to produce different timekeeping systems 3 , this challenge appears particularly relevant in mussels. In littoral species, under laboratory or natural tidal and daily L:D cycles, both tidal and daily oscillations have been reported in Mytilus edulis 62 and Mytilus galloprovincialis 63 behaviour, and in Mytilus californianus transcriptome 47 , metabolism, and cardiac activity 64 . Despite the influence of tides on mussel physiology, circadian rhythms predominate 47 , 63 .…”

Section: Discussionmentioning

confidence: 99%

“…In littoral species, under laboratory or natural tidal and daily L:D cycles, both tidal and daily oscillations have been reported in Mytilus edulis 62 and Mytilus galloprovincialis 63 behaviour, and in Mytilus californianus transcriptome 47 , metabolism, and cardiac activity 64 . Despite the influence of tides on mussel physiology, circadian rhythms predominate 47 , 63 . Free-running circadian rhythms have been reported 65 and several putative circadian clock genes have been identified 66 , but the potential circatidal clock is uncharacterised.…”

Section: Discussionmentioning

confidence: 99%

Biological rhythms in the deep-sea hydrothermal mussel Bathymodiolus azoricus

et al. 2020

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Biological rhythms are a fundamental property of life. The deep ocean covers 66% of our planet surface and is one of the largest biomes. The deep sea has long been considered as an arrhythmic environment because sunlight is totally absent below 1,000 m depth. In the present study, we have sequenced the temporal transcriptomes of a deep-sea species, the ecosystem-structuring vent mussel Bathymodiolus azoricus. We reveal that tidal cycles predominate in the transcriptome and physiology of mussels fixed directly at hydrothermal vents at 1,688 m depth at the Mid-Atlantic Ridge, whereas daily cycles prevail in mussels sampled after laboratory acclimation. We identify B. azoricus canonical circadian clock genes, and show that oscillations observed in deep-sea mussels could be either a direct response to environmental stimulus, or be driven endogenously by one or more biological clocks. This work generates in situ insights into temporal organisation in a deep-sea organism.

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“…Transfer of hemocytes into mussels. Our observation that hemocytes are released in seawater and the fact that mussels have a natural tendency to open up their valve 20 raised the possibility that hemocytes released in seawater may re-enter other mussels. To address this question, monodispersed suspensions of hemocytes were prepared from donor mussels and stained with CFSE, a dye that accumulates in the cytosol and which is commonly used for tracking cells in vivo by flow cytometry 21 (Fig.…”

Section: Release Of Hemocytes In Seawatermentioning

confidence: 99%

Hemocytes released in seawater act as Trojan horses for spreading of bacterial infections in mussels

Caza

Bernet

Veyrier

et al. 2020

Sci Rep

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Global warming has been associated with increased episodes of mass mortality events in invertebrates, most notably in bivalves. Although the spread of pathogens is one of multiple factors that contribute to such mass mortality events, we don’t fully understand the pathophysiological consequences of sea warming on invertebrates. In this work, we show that in temperature stress conditions, circulating hemocytes in mussels leave the hemolymph to gain access to the intervalvar fluid before being released in seawater. External hemocytes can survive for several hours in seawater before entering other mussels. When infected by bacteria, externally-infected hemocytes can enter naive mussels and promote bacterial dissemination in the host. These results reveal the existence of a new opportunistic mechanism used by pathogens to disseminate in marine ecosystems. Such mechanisms may explain how thermal anomalies triggered by global warming can favor episodic mass mortality observed in recent years in marine ecosystem.

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Valve-gaping behavior of raft-cultivated mussels in the Ría de Arousa, Spain

Cited by 53 publications

References 33 publications

<em>In Situ</em> Filtration Rates of Blue Mussels (<em>Mytilus edulis</em>) Measured by an Open-Top Chamber Method

<em>In Situ</em> Filtration Rates of Blue Mussels (<em>Mytilus edulis</em>) Measured by an Open-Top Chamber Method

Biological rhythms in the deep-sea hydrothermal mussel Bathymodiolus azoricus

Hemocytes released in seawater act as Trojan horses for spreading of bacterial infections in mussels

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Valve-gaping behavior of raft-cultivated mussels in the Ría de Arousa, Spain

Cited by 53 publications

References 33 publications

&lt;em&gt;In Situ&lt;/em&gt; Filtration Rates of Blue Mussels (&lt;em&gt;Mytilus edulis&lt;/em&gt;) Measured by an Open-Top Chamber Method

&lt;em&gt;In Situ&lt;/em&gt; Filtration Rates of Blue Mussels (&lt;em&gt;Mytilus edulis&lt;/em&gt;) Measured by an Open-Top Chamber Method

Biological rhythms in the deep-sea hydrothermal mussel Bathymodiolus azoricus

Hemocytes released in seawater act as Trojan horses for spreading of bacterial infections in mussels

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Product

Resources

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<em>In Situ</em> Filtration Rates of Blue Mussels (<em>Mytilus edulis</em>) Measured by an Open-Top Chamber Method

<em>In Situ</em> Filtration Rates of Blue Mussels (<em>Mytilus edulis</em>) Measured by an Open-Top Chamber Method