Transplantation as a conservation action to protect the Mediterranean fan mussel Pinna nobilis

2016 ◽  
Vol 546 ◽  
pp. 113-122 ◽  
Author(s):  
S Katsanevakis
Keyword(s):  
Conservation Action ◽  
Pinna Nobilis ◽  
The Mediterranean

Nitrogen isotope sclerochronology - insights into coastal environmental conditions and Pinna nobilis ecology

2021 ◽  
Author(s):  
Melita Peharda ◽  
David Gillikin ◽  
Bernd Schöne ◽  
Anouk Verheyden-Gillikin ◽  
Hana Uvanović ◽  
...  
Keyword(s):  
High Resolution ◽  
Shell Growth ◽  
Time Interval ◽  
Shell Surface ◽  
Growth Axis ◽  
Pinna Nobilis ◽  
External Shell ◽  
Isotopic Baseline ◽  
The Mediterranean ◽  
Shell Powder

<p><em>Pinna nobilis</em> is a large bivalve endemic to the Mediterranean Sea that lives in shallow coastal areas. Due to its size and relatively fast shell growth rates, it is an interesting taxon for high resolution geochemical and sclerochronological research. Subsequently to previous analyses of δ<sup>18</sup>O and δ<sup>13</sup>C in <em>P. nobilis</em> shells, here, we investigate nitrogen isotopes in the carbonate-bound organic matrix (δ<sup>15</sup>N<sub>CBOM</sub>) of this species. Our objectives were to test if <em>P. nobilis</em> shells (i) can be used as an indicator of the isotopic baseline of the system, and (ii) is a good candidate for obtaining high-resolution temporal data on environmental δ<sup>15</sup>N variability. Due to the multiple mass mortality events of <em>P. nobilis</em> spreading throughout the Mediterranean, including the Adriatic Sea, we also tested if (iii) <em>P. nobilis</em> geochemistry changes as a response to diseases.</p><p>Shells were opportunistically collected by skin diving from 4 shallow coastal localities in the eastern Adriatic, as a part of a project on mortality monitoring. Specimens from Lim channel (October 2019), Kaštela Bay (January 2020) and Mali Ston Bay (November 2019) were collected alive, while in Pag Bay, shells of three recently dead specimens were collected in September 2020. Tissue and epibionts were removed and shells carefully cleaned and air-dried. Shell powder was collected by milling sample swaths by hand using a DREMEL Fortiflex drill equipped with a 300 μm tungsten carbide drill bit. For δ<sup>15</sup>N<sub>CBOM</sub> analysis, three shells from each locality were processed and three replicas were collected from each of these shells by milling shallow lines parallel to the growth axis from the internal shell surface. In addition, high-resolution δ<sup>15</sup>N<sub>CBOM</sub> data were obtained for one shell from Kaštela by milling lines (N=40) perpendicular to the major growth axis from the external shell surface. From this shell we also collected shell powder for δ<sup>18</sup>O<sub>shell</sub> and δ<sup>13</sup>C<sub>shell</sub> analysis to enable placing δ<sup>15</sup>N<sub>CBOM</sub> into temporal context. Isotope samples were analyzed Union College on an elemental analyzer - isotope ratio mass spectrometer.</p><p>Results indicate significant differences in δ<sup>15</sup>N<sub>CBOM</sub> between sampling localities, with lowest values recorded for shells from Pag Bay (3.73±0.36‰), and highest for shells sampled in Lim channel (7.04±0.63‰). High-resolution δ<sup>15</sup>N<sub>CBOM</sub> data obtained from the shell collected from Kaštela Bay corresponded to a time interval from spring 2018 to spring 2019. These data showed relatively small variations (5.02±0.33‰). However, δ<sup>15</sup>N<sub>CBOM</sub> values increased to 8.65±1.61‰ closest to the shell margin, and were coupled with a decrease in δ<sup>13</sup>C<sub>shell</sub> values, indicating that this animal was experiencing stressful conditions several months prior to its death. According to our findings, δ<sup>15</sup>N<sub>CBOM</sub> values serve as an indicator of the isotopic baseline of the ecosystem as well as a potential powerful tool to study bivalve physiology.</p><p>Research was the supported by the Croatian Science Foundation, research project BivACME.</p>

scholarly journals Tracking a mass mortality outbreak of pen shell Pinna nobilis populations: A collaborative effort of scientists and citizens

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Miguel Cabanellas-Reboredo ◽  
Maite Vázquez-Luis ◽  
Baptiste Mourre ◽  
Elvira Álvarez ◽  
Salud Deudero ◽  
...  
Keyword(s):  
Additive Model ◽  
Mass Mortality ◽  
Salinity Range ◽  
Pinna Nobilis ◽  
Mass Mortality Event ◽  
Virtual Particles ◽  
Management Measures ◽  
Pen Shell ◽  
The Mediterranean

Abstract A mass mortality event is devastating the populations of the endemic bivalve Pinna nobilis in the Mediterranean Sea from early autumn 2016. A newly described Haplosporidian endoparasite (Haplosporidium pinnae) is the most probable cause of this ecological catastrophe placing one of the largest bivalves of the world on the brink of extinction. As a pivotal step towards Pinna nobilis conservation, this contribution combines scientists and citizens’ data to address the fast- and vast-dispersion and prevalence outbreaks of the pathogen. Therefore, the potential role of currents on parasite expansion was addressed by means of drift simulations of virtual particles in a high-resolution regional currents model. A generalized additive model was implemented to test if environmental factors could modulate the infection of Pinna nobilis populations. The results strongly suggest that the parasite has probably dispersed regionally by surface currents, and that the disease expression seems to be closely related to temperatures above 13.5 °C and to a salinity range between 36.5–39.7 psu. The most likely spread of the disease along the Mediterranean basin associated with scattered survival spots and very few survivors (potentially resistant individuals), point to a challenging scenario for conservation of the emblematic Pinna nobilis, which will require fast and strategic management measures and should make use of the essential role citizen science projects can play.

The Occurrence of Pontonia Pinnophylax (Decapoda: Natantia: Pontoninae) in Pinna Nobilis (Mollusca: Bivalvia: Pinnidae) from the Mediterranean

1997 ◽  
Vol 77 (4) ◽  
pp. 1227-1230 ◽  
Author(s):  
C.A. Richardson ◽  
H. Kennedy ◽  
C.M. Duarte ◽  
S.V. Proud
Keyword(s):  
Coastal Waters ◽  
General Relationship ◽  
Solitary Male ◽  
Pinna Nobilis ◽  
The Mediterranean

During the course of a survey into the distribution and growth of the fan mussels Pinna nobilis and Pinna rudis from the coastal waters of the Spanish Mediterranean the presence within the mussels of Pontonia pinnophylax has been recorded. Pontonia pinnophylax typically occurred in adult pairs, but occasionally solitary male individuals were found. The width of the cephalothorax is greater in females than males, whereas the chelae of the second periopods, which are unequal, are larger in males. There is a general relationship between the size of P. pinnophylax and its pinnid host; the largest individuals were found in the largest Pinna and vice versa.

scholarly journals Mitochondrial DNA Reveals Genetic Structuring of Pinna nobilis across the Mediterranean Sea

PLoS ONE ◽  
2013 ◽  
Vol 8 (6) ◽  
pp. e67372 ◽  
Author(s):  
Daria Sanna ◽  
Piero Cossu ◽  
Gian Luca Dedola ◽  
Fabio Scarpa ◽  
Ferruccio Maltagliati ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Mediterranean Sea ◽  
Genetic Structuring ◽  
Pinna Nobilis ◽  
The Mediterranean

Resistance of juveniles of the Mediterranean pen shell, (Pinna nobilis) to hypoxia and interaction with warming

2015 ◽  
Vol 165 ◽  
pp. 199-203 ◽  
Author(s):  
Lorena Basso ◽  
Iris Hendriks ◽  
Alexandra Steckbauer ◽  
Carlos Duarte
Keyword(s):  
Pinna Nobilis ◽  
Pen Shell ◽  
The Mediterranean

The Fan Mussel Pinna nobilis on the Brink of Extinction in the Mediterranean

2021 ◽  
Author(s):  
Stelios Katsanevakis ◽  
Francesca Carella ◽  
Melih Ertan Çinar ◽  
Hrvoje Čižmek ◽  
Carlos Jimenez ◽  
...  
Keyword(s):  
Pinna Nobilis ◽  
The Mediterranean

Pinna nobilis in the Mar Menor coastal lagoon: a story of colonization and uncertainty

2020 ◽  
Vol 652 ◽  
pp. 77-94 ◽  
Author(s):  
F Giménez-Casalduero ◽  
F Gomariz-Castillo ◽  
F Alonso-Sarría ◽  
E Cortés ◽  
A Izquierdo-Muñoz ◽  
...  
Keyword(s):  
Random Forest ◽  
Coastal Lagoons ◽  
Anthropogenic Activities ◽  
Published Data ◽  
Mortality Event ◽  
Pinna Nobilis ◽  
Mass Mortality Event ◽  
Mar Menor ◽  
The Mediterranean ◽  
Rate Of Decline

Populations of the Mediterranean fan mussel Pinna nobilis have progressively decreased over the last decades as a result of anthropogenic activities. The rate of decline has strongly increased since 2016, when a mass mortality event triggered by the parasite Haplosporidium pinnae occurred, and evidence exists that Mycobacterium species may also have played a major role in the event. Indeed, the epidemic has spread throughout the Mediterranean, although coastal lagoons seem to offer a degree of ‘resistance’ against the parasite. In the early 1980s, P. nobilis appeared in the Mar Menor lagoon and rapidly became an important component of the benthos. However, colonization of the lagoon by the fan mussel was cut short in 2016 when a massive mortality event occurred, possibly as a consequence of the environmental collapse that occurred in the lagoon, parallel to the mortality that the species suffered in the Mediterranean that same year. In this study, we estimated the spatial distribution of P. nobilis in the Mar Menor for 3 periods: 2003-2004, 2013 and 2016. The first 2 periods use published data, and the last period uses data collected in a new campaign. The probability of occurrence for the 3 periods was estimated using random forest and random forest regression-kriging models. The main environmental variables that determined the dispersion and colonization of the bivalve in the lagoon before 2016 are also identified.

scholarly journals Noble Pen Shell (Pinna nobilis) Mortalities along the Eastern Adriatic Coast with a Study of the Spreading Velocity

2021 ◽  
Vol 9 (7) ◽  
pp. 764
Author(s):  
Željko Mihaljević ◽  
Željko Pavlinec ◽  
Ivana Giovanna Zupičić ◽  
Dražen Oraić ◽  
Aleksandar Popijač ◽  
...  
Keyword(s):  
Molecular Techniques ◽  
Dense Population ◽  
Pinna Nobilis ◽  
The North ◽  
Pen Shell ◽  
Adriatic Coast ◽  
The Mediterranean ◽  
Mass Mortalities ◽  
Digestive Glands ◽  
Mycobacterium Spp

Noble pen shells (Pinna nobilis) along the Eastern Adriatic coast were affected by mass mortalities similarly to the populations across the Mediterranean basin. Samples of live animals and organs originating from sites on Mljet Island on the south and the Istrian peninsula on the north of the Croatian Adriatic coast were analyzed using histology and molecular techniques to detect the presence of the previously described Haplosporidium pinnae and Mycobacterium spp. as possible causes of these mortalities. To obtain more information on the pattern of the spread of the mortalities, a study was undertaken in Mljet National Park, an area with a dense population of noble pen shells. The results of the diagnostic analysis and the velocity of the spread of the mortalities showed a significant correlation between increases in water temperature and the onset of mortality. Moderate to heavy lesions of the digestive glands were observed in specimens infected with H. pinnae. A phylogenetic analysis of the detected Haplosporidium pinnae showed an identity of 99.7 to 99.8% with isolates from other Mediterranean areas, while isolated Mycobacterium spp. showed a higher heterogeneity among isolates across the Mediterranean. The presence of Mycobacterium spp. in clinically healthy animals a few months before the onset of mortality imposes the need for further clarification of its role in mortality events.

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