S.O.S. Pinna nobilis: A Mass Mortality Event in Western Mediterranean Sea

Vázquez‐Luis, Maite; Álvarez, Elvira; Barrajón, Agustín; García‐March, José Rafael; Grau, Amàlia; Hendriks, Iris E.; Jiménez, Santiago; Kersting, Diego K.; Moreno, Diego; Pérez, Marta; Ruiz, Juan Manuel García; Sánchez, Jordi; Villalba, António; Deudero, Salud

doi:10.3389/fmars.2017.00220

Cited by 122 publications

(125 citation statements)

References 25 publications

(31 reference statements)

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“…Only with regular monitoring and additional studies will it be possible to detect population trends and understand the dynamics of the species. In particular, in view of the ongoing massive mortality of the species in the western Mediterranean, urgent adaptation of monitoring plans to detect mass mortality events in all Mediterranean fan mussel populations and identify resistant individuals has been suggested (Vázquez-Luis et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…Despite protection, in the last decades its populations have been declining (Basso et al, 2015), due to direct threats such as trawling and anchoring , illegal collection by divers for food, decorative purposes, and for its byssus (Zavodnik et al, 1991;Katsanevakis, 2007a), and indirect threats such as habitat loss or degradation. Since autumn 2016, a mass mortality event, caused by the parasite Haplosporidium pinnae (Catanese et al, 2018) has caused, so far, an estimated loss of ~90% of the Spanish P. nobilis populations (Vázquez-Luis et al, 2017) and has raised concerns about the status of the species in the entire Mediterranean basin.…”

Section: Introductionmentioning

confidence: 99%

“…Despite Gera Gulf being part of the NATURA 2000 network, there have been no previous assessments of its P. nobilis population, and thus this study serves as a baseline for assessment of future population trends. In view of the ongoing mass mortality of the species in the western Mediterranean (Vázquez-Luis et al, 2017), monitoring all important populations of the species is of utmost importance.…”

Section: Introductionmentioning

confidence: 99%

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Spatial distribution, abundance and habitat use of the endemic Mediterranean fan mussel Pinna nobilis in Gera Gulf, Lesvos (Greece): comparison of design-based and model-based approaches

et al. 2018

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An important population of the endemic Mediterranean fan mussel Pinna nobilis thrives in the marine protected area of Gera Gulf (Lesvos island, north-eastern Aegean Sea, Greece), and was assessed for the first time. To estimate the abundance, spatial distribution and habitat use of fan mussels in Gera Gulf, a distance sampling underwater survey was conducted. Detectability was modelled to secure unbiased estimates of population density. Two approaches were applied to analyze survey data, a design-based and a model-based approach using generalized additive models. The first approach was based on stratified random sampling on two strata, an assumed 'preferable' zone close to the coastline and an assumed unsuitable habitat, with predominantly muddy sediments, in which low sampling effort was applied. For the needs of the model-based approach, a dedicated cruise was conducted to collect bathymetric data with a single-beam echo-sounder and map the bathymetry of the study area. A very high-resolution image from the Worldview-3 satellite was processed, based on an object-based image analysis, for mapping all main habitat types in the study area. The estimated abundance using the design-based approach was low-biased as the stratum of pre-assumed unsuitable habitat proved to include patches of suitable habitats with high population densities that were missed by sampling. The model-based approach provided an abundance estimate of 213300 individuals (95% confidence interval between 97600-466000 individuals), which renders the fan mussel population of Gera Gulf the largest recorded population in Greece. Population density peaked between 1.5-8 m depth and became practically zero at depths >15 m. A bathymetric segregation of fan mussel size classes was noted, with the density of small individuals peaking in shallow waters, while that of large individuals peaked deeper. The highest population densities were observed in Posidonia oceanica meadows, followed by mixed bottoms (with reefs, rocks and sandy patches), while densities were very low on sandy and zero on muddy sediments. The current assessment provides a baseline for future monitoring of the fan mussel population in Gera Gulf. In view of the current (2017-2018) ongoing mass mortality of the species in the western Mediterranean, continuous monitoring of the main fan mussel populations, such as the one in Gera Gulf, is of utmost importance.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatial distribution, abundance and habitat use of the endemic Mediterranean fan mussel Pinna nobilis in Gera Gulf, Lesvos (Greece): comparison of design-based and model-based approaches

et al. 2018

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“…On the coastline between Punta de Calaburras and Calahonda presence of P. rudis is noted by Urra et al (2016). Although, during 2017 along Spanish coast mass mortality of P. nobilis due to parasite infection was mentioned (Vázquez-Luis et al, 2017;Martinović et al, 2019), P. rudis was not affected (Vázquez-Luis et al, 2017).…”

Section: Spain (Including Gibraltar)mentioning

confidence: 98%

Review on Pinna Rudis (Linnaeus, 1758) (Bivalvia: Pinnidae) Presence in the Mediterranean

Gvozdenović¹,

Mačić²,

Pešić³

et al. 2019

AgricultForest

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Pinna rudis (Linnaeus, 1758) or the rough pen shell, has Atlantic-Mediterranean distribution, and prefers warmer waters and harder substrates. Species is threatened by different factors and it is listed on Annex II of the Bern and Barcelona Convention. Some changes in species distribution are evident, most probably related to climate changes. Until 2018 presence of this species in the Adriatic Sea had not been confirmed with certainty, when it was find for the first time in Boka Kotorska Bay, what also presents first certain findings of the species in the Adriatic Sea. In this paper review on species presence along Mediterranean coast is given. Collected data indicate that species is more common in west Mediterranean compare to east and north part, and that future monitoring and status of population is required.

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“…Furthermore, the fan mussel is an endangered species; it is included in Annex II of the Bern Convention as a strictly protected species and the Barcelona Convention as a threatened or endangered marine species. Its status is being reviewed in Spain to "Critically Endangered" due to recent mass mortality in the western Mediterranean, provoked by a Haplosporidian protozoan parasite (Darriba, 2017;Vázquez-Luis et al, 2017). The fan mussel is a typical inhabitant of subtidal Posidonia oceanica meadows and the largest bivalve in the Mediterranean Sea (with a maximum shell length of 120 cm, it is one of the largest bivalves in the world) (Basso et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Temperature regulates the switch between light-synchronized and unsynchronized activity patterns in the subtidal bivalve Pinna nobilis

et al. 2018

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The present study reports new knowledge into the biological rhythms of subtidal bivalves using the fan mussel Pinna nobilis as model. The objective was determining which factor(s) provoke the change between two different patterns observed in the annual cycle of this species: P1, characterized by the individuals opening and closing their valves following the presence and absence of ambient light and P2, characterised by a behaviour independent of the presence of light. Magnetoresistive sensors were installed on 8 fan mussels to record gaping activity in laboratory conditions. Different temperature and light treatments were applied. Results showed temperature as the factor modulating the change between behavioural patterns. The individuals switched to P1 when temperature reached 24.5º C. In this pattern, individuals are entrained by light showing a circadian rhythm linked to the daily light treatments. During P2, the circadian rhythm was missing or very weak, contrary to in situ observations. The results of the present study contribute to understand the biology of the species in order to plan new conservation strategies. Furthermore, the observed relationship between temperature and P1 is of interest to develop captive breeding of fan mussels. Altogether, this information is especially relevant in view of the recent mass mortality of P. nobilis occurred in the western Mediterranean.

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S.O.S. Pinna nobilis: A Mass Mortality Event in Western Mediterranean Sea

Cited by 122 publications

References 25 publications

Spatial distribution, abundance and habitat use of the endemic Mediterranean fan mussel Pinna nobilis in Gera Gulf, Lesvos (Greece): comparison of design-based and model-based approaches

Spatial distribution, abundance and habitat use of the endemic Mediterranean fan mussel Pinna nobilis in Gera Gulf, Lesvos (Greece): comparison of design-based and model-based approaches

Review on Pinna Rudis (Linnaeus, 1758) (Bivalvia: Pinnidae) Presence in the Mediterranean

Temperature regulates the switch between light-synchronized and unsynchronized activity patterns in the subtidal bivalve Pinna nobilis

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