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14 results for “Pinna nobilis”
Orthophoto mosaic from UAV of a Pinna nobilis population within the Venice lagoon
<p>Orthophoto mosaic from a UAV survey on a tidal flat within the Venice lagoon (Italy) colonized by Pinna nobilis and Cymodocea nodosa. On June 23<sup>rd</sup>, 2020 at 06:05 a.m. (GMT) (07:05 solar local time) UAV images were collected at low tide with a DJI Zenmuse X4S camera (20 Mpixels, focal length 8.8 mm, 1-inch CMOS Sensor) mounted on a professional quadcopter DJI Matrice210v2. A total of 228 images were collected and the Agisoft Metashape Pro v 1.6.2 software was then used to produce an ortho-photo mosaic through Structure from Motion photogrammetric technique.</p>
Data set for the article "Tides, topography, and seagrass cover controls on the spatial distribution of Pinna nobilis on a coastal lagoon tidal flat"
<p>Data set includes: coordinates of the GNSS points (reference system WGS84 UTM33N); density of P. nobilis and cover of C.nodosa detected in the orthophoto in the 25m<sup>2</sup> cells; tidal levels measured (and, for comparison, simulated with the hydrodynamic model) corrected with respect to the IGM datum; number of emersions and flood duration for different levels of the tidal flat; statistics. The first Excel sheet includes a detailed description of the data.</p>
FIG. 6 in Epibiontic mollusc communities on Pinna nobilis L. (Bivalvia, Mollusca)
FIG. 6. Trophic structure of the epibiontic mollusc community in each P. nobilis size class. Sh, suspension feeder herbivores; Gh, grazer herbivores; O, omnivores; C, carnivores; P, parasites.
FIG. 7 in Epibiontic mollusc communities on Pinna nobilis L. (Bivalvia, Mollusca)
FIG. 7. Biocenotic composition of epibiontic mollusc community (entire sample). lre, species with a wide ecological distribution; sspr, species without a clearly deŽned ecological role; AP, exclusive or predominant species in the photophilic algae biocenosis; AP-HP, predominant species in both photophilic algae and Posidonia meadow biocoenoses; SFBC/SVMC, exclusive or predominant species in Žne well-sorted sands, together with muddy sands in sheltered areas biocoenoses; SGCF, exclusive or predominant species in coarse sands and Žne gravel with bottom currents; DC, exclusive or predominant species in coastal detritic biocoenoses.
FIG. 8 in Epibiontic mollusc communities on Pinna nobilis L. (Bivalvia, Mollusca)
FIG. 8. Biocenotic composition of epibiontic mollusc community (for each size classes). lre, species with a wide ecological distribution; sspr, species without a clearly deŽned ecological role; AP, exclusive or predominant species in the photophilic algae biocenosis; AP-HP, predominant species in both photophilic algae and Posidonia meadow biocoenoses; SFBC/SVMC, exclusive or predominant species in Žne well-sorted sands, together with muddy sands in sheltered areas biocoenoses; SGCF, exclusive or predominant species in coarse sands and Žne gravel with bottom currents; DC, exclusive or predominant species in coastal detritic biocoenoses.
FIG. 3 in Epibiontic mollusc communities on Pinna nobilis L. (Bivalvia, Mollusca)
FIG. 3. Epibiontic mollusc community: Shannon-Wiener diversity H ¾ versus Pinna nobilis shell size.
FIG. 2 in Epibiontic mollusc communities on Pinna nobilis L. (Bivalvia, Mollusca)
FIG. 2. Epibiontic mollusc community: species richness versus Pinna nobilis shell size.
FIG. 1 in Epibiontic mollusc communities on Pinna nobilis L. (Bivalvia, Mollusca)
FIG. 1. Jaccard aYnity index: occurrence of each range of values.
Investigating population dynamics from parentage analysis in the highly endangered fan mussel Pinna nobilis
<p>Understanding dispersal patterns is a major focus for conservation biology as it influences local survival and resilience in case of local disturbance, particularly for sessile species. Dispersal can be assessed through parentage analyses by estimating family structure and self-recruitment. This study documents the family structure of a pelagic spawner, <i>Pinna nobilis</i>, which is facing a major crisis that threatens its survival as most of its populations have been decimated by a parasite, <i>Haplosporidium pinnae</i>. In this context, we focused on a single population (Peyrefite, Banyuls-sur-mer, France) where 640 individuals were sampled in 2011, 2015 and 2018 and genotyped for 22 microsatellite markers. Genetic diversity was high and homogeneous among years, with mean allele numbers ranging between 13.6 and 14.8 and observed heterozygosities (<i>Ho</i>) between 0.7121 and 0.7331. Low, but significant, genetic differentiations were found between 2011 - 2015 and 2015 - 2018. A parentage analysis described 11 clusters, including one prevailing, and revealed that 46.9 % of individuals were involved in half-sib relationships, even between years, suggesting that source populations were recurrent year after year. There were few individuals resampled between years (30 in 2015 and 14 in 2018), indicating a rapid turnover. Considering the large number of half-sib relationships but the low number of relations per individual, we conclude that <i>P. nobilis</i> exhibit homogeneous reproductive success. Self-recruitment was not detected, making this population highly vulnerable as replenishment only relies on connectivity from neighboring populations. In the context of the pandemic caused by <i>H. pinnae</i>, these results will have to be considered when choosing a location to reintroduce individuals in potential future rescue plans.</p>
Investigating population dynamics from parentage analysis in the highly endangered fan mussel Pinna nobilis
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Pinna nobilis RNA-Seq and Transcriptome
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FIG. 5 in Epibiontic mollusc communities on Pinna nobilis L. (Bivalvia, Mollusca)
FIG. 5. Epibiontic mollusc community (entire sample): trophic structure. Sh, suspension feeder herbivores; Gh, grazer herbivores; O, omnivores; C, carnivores; P, parasites.
FIG. 4 in Epibiontic mollusc communities on Pinna nobilis L. (Bivalvia, Mollusca)
FIG. 4. Epibiontic mollusc community: mean Shannon-Wiener diversity H ¾ versus aYnity.
Pinna nobilis genotype table (Occitan coast)
<p>The fan mussel, <em>Pinna nobilis</em>, endemic to the Mediterranean Sea, is a critically endangered species facing mass mortality events in almost all of its populations, following the introduction of the parasite <em>Haplosporidium pinnae</em>. Such a unique pandemic in a marine organism, which spreads rapidly and with mortality rates reaching 100 %, could lead to the potential extinction of the species. Only few regions, involving lagoon habitats, remain healthy throughout entire Mediterranean Sea. This dataset was used to describes the genetic structure of <em>P. nobilis</em> across the Gulf of Lion, including confined locations such as lagoons and ports. This dataset contains the genotype, at 22 microsatellite loci, of total of 960 samples that were collected among 16 sites distributed at 8 localities.</p> <p>The results of the study are available in Peyran et al. (2021).</p> <p>Peyran, C., Boissin, E., Morage, T., Nebot-Colomer, E., Iwankow, G., & Planes, S. (2021). Genetic homogeneity of the critically endangered fan mussel, Pinna nobilis, throughout lagoons of the Gulf of Lion (North-Western Mediterranean Sea). <em>Scientific reports</em>, <em>11</em>(1), 1-12.</p> <p>Corresponding author: claire.peyran@gmail.com</p>
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International Brain Laboratory public data
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OpenNeuro
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