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Carella F, Prado P, García-March JR, Tena-Medialdea J, Melendreras EC, Porcellini A, Feola A. Measuring immunocompetence in the natural population and captive individuals of noble pen shell Pinna nobilis affected by Pinna nobilis Picornavirus (PnPV). FISH & SHELLFISH IMMUNOLOGY 2024; 151:109664. [PMID: 38844186 DOI: 10.1016/j.fsi.2024.109664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/20/2024] [Accepted: 05/30/2024] [Indexed: 06/10/2024]
Abstract
Mass Mortality Events (MMEs) affecting the noble pen shell Pinna nobilis have been reported since 2016. In this work, we used an in vitro flow cytometric assay to evaluate phagocytosis, coupled with cytology and Electron Microscopy (TEM), to define animal immunocompetence following infection by P. nobilis Picornavirus (PnPV). The study was performed on 27 animals in July 2021 and May 2022 on two natural population from the Ebro Delta (Catalonia, Spain) and animals maintained in captivity at facilities in Valencia and Murcia Aquarium. Hemolymph was collected in the field and in captivity as a non-destructive sampling method. Based on dimension and internal complexity, flow cytometry identified three haemocyte types, distinguished in granulocytes, hyalinocytes and a third type, biggest in size and with high internal complexity and granularity. Those cells corresponded at ultrastructure to hemocytes with advanced phases of PnPV infection and related to cytopathic effect of the replicating virus displaying numerous Double Membrane Vesicles (DMVs) and cells corpse fusion. The results showed that pen shell in captivity had significantly lower Total Hemocyte Count (THC) compared with natural population of Alfacs Bay (mean number of 7-9 x 104 vs 2-5 x 105 cells/mL, respectively). FACS (Fluorescence-activated cell sorting) based phagocytosis analysis demonstrate that animals in captivity at IMEDMAR-UCV and Murcia Aquarium, had scarce or absent ability to phagocyte the two stimuli (Staphylococcus aureus and Zymosan A) (10,2 % ± 1,7 of positives) if compared with the natural population in Alfacs Bay (28,5 % ± 5,6 of positive). Ultrastructure images showed that PnPV itself can lead to an alteration of the hemocyte cytoskeleton, impairing the capabilities to perform an active phagocytosis and an efficient phagolysosome fusion.
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Affiliation(s)
- Francesca Carella
- Department of Biology, University of Naples Federico II, Via Cinthia Complesso di Monte Sant Angelo, Naples, Italy.
| | - Patricia Prado
- IMEDMAR-UCV, Universidad Católica de Valencia, 03710, Calpe, Alicante, Spain; Institut d'Estudis Professionals Aqüícoles i Ambientals de Catalunya (IEPAAC), 43540, La Ràpita, Tarragona, Spain
| | | | - José Tena-Medialdea
- IMEDMAR-UCV, Universidad Católica de Valencia, 03710, Calpe, Alicante, Spain
| | | | - Antonio Porcellini
- Department of Biology, University of Naples Federico II, Via Cinthia Complesso di Monte Sant Angelo, Naples, Italy
| | - Antonia Feola
- Department of Biology, University of Naples Federico II, Via Cinthia Complesso di Monte Sant Angelo, Naples, Italy
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2
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Sanna D, Azzena I, Locci C, Ankon P, Kružić P, Manfrin C, Pallavicini A, Ciriaco S, Segarich M, Batistini E, Scarpa F, Casu M. Reconstructing the Evolutionary History of Pinna nobilis: New Genetic Signals from the Past of a Species on the Brink of Extinction. Animals (Basel) 2023; 14:114. [PMID: 38200845 PMCID: PMC10778441 DOI: 10.3390/ani14010114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/20/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
Pinna nobilis, commonly known as the noble pen shell, is a marine bivalve endemic to the Mediterranean Sea. Unfortunately, due to a multifactorial disease that began affecting its populations in 2016, the species is currently facing the threat of extinction. To gain insights into the evolutionary history of P. nobilis before the mass mortality event (MME), and to obtain a comprehensive understanding of how evolutionary processes led to the adaptation of the species into the Mediterranean Sea, phylogenetic and phylogeographic analyses were carried out. The dataset analysed includes 469 sequences of COI gene fragment both from GenBank and the present study (100). The analysis performed evidenced that P. nobilis diverged about 2.5 mya, after the entrance of its ancestor into the Mediterranean Sea following the Zanclean flood (5.33 mya). Moreover, our results suggest that the starting point of colonisation was the central part of the western Mediterranean basin, with the eastern basin being populated subsequently. From a conservational viewpoint, these results provide important hints for present and future restocking plans, helping to reconstruct the pre-existing genetic variability in sites where the species became extinct.
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Affiliation(s)
- Daria Sanna
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43b, 07100 Sassari, Italy; (I.A.); (C.L.); (F.S.)
| | - Ilenia Azzena
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43b, 07100 Sassari, Italy; (I.A.); (C.L.); (F.S.)
| | - Chiara Locci
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43b, 07100 Sassari, Italy; (I.A.); (C.L.); (F.S.)
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100 Sassari, Italy;
| | - Pavel Ankon
- Department of Biology, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia; (P.A.); (P.K.)
| | - Petar Kružić
- Department of Biology, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia; (P.A.); (P.K.)
| | - Chiara Manfrin
- Department of Life Sciences, University of Trieste, Via L. Giorgieri 5, 34127 Trieste, Italy; (C.M.); (A.P.)
| | - Alberto Pallavicini
- Department of Life Sciences, University of Trieste, Via L. Giorgieri 5, 34127 Trieste, Italy; (C.M.); (A.P.)
| | - Saul Ciriaco
- WWF AMP Miramare, Via Beirut 2/4, 34151 Trieste, Italy;
- Shoreline Soc. Coop., AREA Science Park, Padriciano 99, 34149 Trieste, Italy; (M.S.); (E.B.)
| | - Marco Segarich
- Shoreline Soc. Coop., AREA Science Park, Padriciano 99, 34149 Trieste, Italy; (M.S.); (E.B.)
| | - Edoardo Batistini
- Shoreline Soc. Coop., AREA Science Park, Padriciano 99, 34149 Trieste, Italy; (M.S.); (E.B.)
| | - Fabio Scarpa
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43b, 07100 Sassari, Italy; (I.A.); (C.L.); (F.S.)
| | - Marco Casu
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100 Sassari, Italy;
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Carella F, Prado P, De Vico G, Palić D, Villari G, García-March JR, Tena-Medialdea J, Cortés Melendreras E, Giménez-Casalduero F, Sigovini M, Aceto S. A widespread picornavirus affects the hemocytes of the noble pen shell ( Pinna nobilis), leading to its immunosuppression. Front Vet Sci 2023; 10:1273521. [PMID: 38164394 PMCID: PMC10758234 DOI: 10.3389/fvets.2023.1273521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 11/13/2023] [Indexed: 01/03/2024] Open
Abstract
Introduction The widespread mass mortality of the noble pen shell (Pinna nobilis) has occurred in several Mediterranean countries in the past 7 years. Single-stranded RNA viruses affecting immune cells and leading to immune dysfunction have been widely reported in human and animal species. Here, we present data linking P. nobilis mass mortality events (MMEs) to hemocyte picornavirus (PV) infection. This study was performed on specimens from wild and captive populations. Methods We sampled P. nobilis from two regions of Spain [Catalonia (24 animals) and Murcia (four animals)] and one region in Italy [Venice (6 animals)]. Each of them were analyzed using transmission electron microscopy (TEM) to describe the morphology and self-assembly of virions. Illumina sequencing coupled to qPCR was performed to describe the identified virus and part of its genome. Results and discussion In 100% of our samples, ultrastructure revealed the presence of a virus (20 nm diameter) capable of replicating within granulocytes and hyalinocytes, leading to the accumulation of complex vesicles of different dimensions within the cytoplasm. As the PV infection progressed, dead hemocytes, infectious exosomes, and budding of extracellular vesicles were visible, along with endocytic vesicles entering other cells. The THC (total hemocyte count) values observed in both captive (eight animals) (3.5 × 104-1.60 × 105 ml-1 cells) and wild animals (14 samples) (1.90-2.42 × 105 ml-1 cells) were lower than those reported before MMEs. Sequencing of P. nobilis (six animals) hemocyte cDNA libraries revealed the presence of two main sequences of Picornavirales, family Marnaviridae. The highest number of reads belonged to animals that exhibited active replication phases and abundant viral particles from transmission electron microscopy (TEM) observations. These sequences correspond to the genus Sogarnavirus-a picornavirus identified in the marine diatom Chaetoceros tenuissimus (named C. tenuissimus RNA virus type II). Real-time PCR performed on the two most abundant RNA viruses previously identified by in silico analysis revealed positive results only for sequences similar to the C. tenuissimus RNA virus. These results may not conclusively identify picornavirus in noble pen shell hemocytes; therefore, further study is required. Our findings suggest that picornavirus infection likely causes immunosuppression, making individuals prone to opportunistic infections, which is a potential cause for the MMEs observed in the Mediterranean.
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Affiliation(s)
- Francesca Carella
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Patricia Prado
- Institute of Agrifood Research and Technology (IRTA)-Sant Carles de la Ràpita, Tarragona, Spain
| | - Gionata De Vico
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Dušan Palić
- Chair for Fish Diseases and Fisheries Biology, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Grazia Villari
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - José Rafael García-March
- Instituto de Investigación en Medio Ambiente y Ciencia Marina, Universidad Católica de Valencia, Calpe, Spain
| | - José Tena-Medialdea
- Instituto de Investigación en Medio Ambiente y Ciencia Marina, Universidad Católica de Valencia, Calpe, Spain
| | | | - Francisca Giménez-Casalduero
- Department of Marine Science and Applied Biology, Research Marine Centre in Santa Pola (CIMAR), University of Alicante, Alicante, Spain
| | - Marco Sigovini
- Consiglio Nazionale delle Ricerche, Istituto di Scienze Marine, Venice, Italy
| | - Serena Aceto
- Department of Biology, University of Naples Federico II, Naples, Italy
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Donato G, Lunetta A, Spinelli A, Catanese G, Giacobbe S. Sanctuaries are not inviolable: Haplosporidium pinnae as responsible for the collapse of the Pinna nobilis population in Lake Faro (central Mediterranean). J Invertebr Pathol 2023; 201:108014. [PMID: 37918657 DOI: 10.1016/j.jip.2023.108014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 10/14/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023]
Abstract
The rapid spread of the protozoan Haplosporidium pinnae is having a strong negative effect on Pinna nobilis populations. A case study on a residual population in Lake Faro (Sicily, Central Mediterranean), whose long-term monitoring has revealed a dramatic decline following the 2018-2020 mass mortality event, is presented. In the framework of such monitoring, we performed tissue sampling on nine living P. nobilis, detecting the pathogen in seven of them. In contrast, other pathogens associated with P. nobilis disease in other areas, i.e., Mycobacterium spp. and Vibrio mediterranei, were not recorded. The surviving individuals (approximately twenty) showed that brackish areas only weakly mitigate the effects of H. pinnae disease and might not be resolutive. Nevertheless, the results show that Lake Faro may constitute one of the last Mediterranean P. nobilis sanctuaries.
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Affiliation(s)
- Gemma Donato
- Department of Biological, Geological and Environmental Sciences, University of Catania, Corso Italia, 57, 95129, Catania, Italy
| | - Alessia Lunetta
- Institute for Biological Resources and Marine Biotechnologies, Section of Messina, National Research Council (CNR-IRBIM), Spianata S. Rineri 86, 98122 Messina, Italy.
| | - Andrea Spinelli
- Research Department, Fundación Oceanogràfic de la Comunitat Valenciana, Oceanogràfic, Ciudad de las Artes y las Ciencias, Carrer d'Eduardo Primo Yúfera, 1, 46013 Valencia, Spain
| | - Gaetano Catanese
- Laboratorio de Investigaciones Marinas y Acuicultura (LIMIA -IRFAP) - Govern de les Illes Balears, Av. Ing. G. Roca, 69. 07157 Port d'Andratx, Balearic Islands, Spain; Instituto de Investigaciones Agroambientales y de Economía del Agua - Universidad de las Islas Baleares (INAGEA-UIB), Ctra. De Valldemossa, km 7.5., Palma, Spain
| | - Salvatore Giacobbe
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, ChiBioFarAm, Università Degli Studi di Messina, V.le Ferdinando Stagno D'Alcontres, 31, 98166 Messina, Italy
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5
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Carella F, Palić D, Šarić T, Župan I, Gorgoglione B, Prado P, Andree KB, Giantsis IA, Michaelidis B, Lattos A, Theodorou JA, Luis Barja Perez J, Rodriguez S, Scarpa F, Casu M, Antuofermo E, Sanna D, Otranto D, Panarese R, Iaria C, Marino F, Vico GD. Multipathogen infections and multifactorial pathogenesis involved in noble pen shell ( Pinna nobilis) mass mortality events: Background and current pathologic approaches. Vet Pathol 2023; 60:560-577. [PMID: 37458195 DOI: 10.1177/03009858231186737] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Disease outbreaks in several ecologically or commercially important invertebrate marine species have been reported in recent years all over the world. Mass mortality events (MMEs) have affected the noble pen shell (Pinna nobilis), causing its near extinction. Our knowledge of the dynamics of diseases affecting this species is still unclear. Early studies investigating the causative etiological agent focused on a novel protozoan parasite, Haplosporidium pinnae, although further investigations suggested that concurrent polymicrobial infections could have been pivotal in some MMEs, even in the absence of H. pinnae. Indeed, moribund specimens collected during MMEs in Italy, Greece, and Spain demonstrated the presence of a bacteria from within the Mycobacterium simiae complex and, in some cases, species similar to Vibrio mediterranei. The diagnostic processes used for investigation of MMEs are still not standardized and require the expertise of veterinary and para-veterinary pathologists, who could simultaneously evaluate a variety of factors, from clinical signs to environmental conditions. Here, we review the available literature on mortality events in P. nobilis and discuss approaches to define MMEs in P. nobilis. The proposed consensus approach should form the basis for establishing a foundation for future studies aimed at preserving populations in the wild.
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Affiliation(s)
| | - Dušan Palić
- Ludwig-Maximilians-University Munich, Munich, Germany
| | | | | | | | | | | | | | | | | | | | | | - Sergio Rodriguez
- University of Santiago de Compostela, Santiago de Compostela, Spain
| | | | | | | | | | - Domenico Otranto
- University of Bari, Bari, Italy
- Bu-Ali Sina University, Hamedan, Iran
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6
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Castaño-Ortiz JM, Gil-Solsona R, Ospina-Alvarez N, García-Pimentel MM, León VM, Santos LHMLM, Barceló D, Rodríguez-Mozaz S. Bioaccumulation and fate of pharmaceuticals in a Mediterranean coastal lagoon: Temporal variation and impact of a flash flood event. ENVIRONMENTAL RESEARCH 2023; 228:115887. [PMID: 37054836 DOI: 10.1016/j.envres.2023.115887] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/20/2023] [Accepted: 04/10/2023] [Indexed: 05/16/2023]
Abstract
Coastal ecosystems are particularly vulnerable to terrestrial inputs from human-impacted areas. The prevalence of wastewater treatment plants, unable to remove contaminants such as pharmaceuticals (PhACs), leads to their continuous input into the marine environment. In this paper, the seasonal occurrence of PhACs in a semi-confined coastal lagoon (the Mar Menor, south-eastern Spain) was studied during 2018 and 2019 by evaluating their presence in seawater and sediments, and their bioaccumulation in aquatic organisms. Temporal variation in the contamination levels was evaluated by comparison to a previous study carried out between 2010 and 2011 before the cessation of permanent discharges of treated wastewater into the lagoon. The impact of a flash flood event (September 2019) on PhACs pollution was also assessed. A total of seven compounds (out of 69 PhACs analysed) were found in seawater during 2018-2019, with a limited detection frequency (<33%) and concentrations (up to 11 ng/L of clarithromycin). Only carbamazepine was found in sediments (ND-1.2 ng/g dw), suggesting an improved environmental quality in comparison to 2010-2011 (when 24 and 13 compounds were detected in seawater and sediments, respectively). However, the biomonitoring of fish and molluscs showed a still remarkable accumulation of analgesic/anti-inflammatory drugs, lipid regulators, psychiatric drugs and β-blocking agents, albeit not higher than in 2010. The flash flood event from 2019 increased the prevalence of PhACs in the lagoon, compared to the 2018-2019 sampling campaigns, especially in the upper water layer. After the flash flood the antibiotics clarithromycin and sulfapyridine yielded the highest concentrations ever reported in the lagoon (297 and 145 ng/L, respectively), alongside azithromycin in 2011 (155 ng/L). Flash flood events associated with sewer overflows and soil mobilisation, which are expected to increase under climate change scenarios, should be considered when assessing the risks posed by pharmaceuticals to vulnerable aquatic ecosystems in the coastal areas.
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Affiliation(s)
- J M Castaño-Ortiz
- Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003, Girona, Spain; University of Girona, Girona, Spain
| | - R Gil-Solsona
- Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003, Girona, Spain; University of Girona, Girona, Spain; Institute of Environmental Assessment and Water Research (IDAEA-CSIC) Severo Ochoa Excellence Centre, Department of Environmental Chemistry, C/ Jordi Girona 18-26, 08034, Barcelona, Spain
| | - N Ospina-Alvarez
- Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003, Girona, Spain; University of Girona, Girona, Spain; Atlantic International Research Centre (AIR Centre), 9700-702, Angra Do Heroísmo, Azores, Portugal
| | - M M García-Pimentel
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de Murcia, C/ Varadero 1, San Pedro Del Pinatar, Murcia, Spain
| | - V M León
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de Murcia, C/ Varadero 1, San Pedro Del Pinatar, Murcia, Spain
| | - L H M L M Santos
- Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003, Girona, Spain; University of Girona, Girona, Spain.
| | - D Barceló
- Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003, Girona, Spain; University of Girona, Girona, Spain; Institute of Environmental Assessment and Water Research (IDAEA-CSIC) Severo Ochoa Excellence Centre, Department of Environmental Chemistry, C/ Jordi Girona 18-26, 08034, Barcelona, Spain
| | - S Rodríguez-Mozaz
- Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003, Girona, Spain; University of Girona, Girona, Spain
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7
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Lattos A, Papadopoulos DK, Giantsis IA, Feidantsis K, Georgoulis I, Karagiannis D, Carella F, Michaelidis B. Investigation of the highly endangered Pinna nobilis' mass mortalities: Seasonal and temperature patterns of health status, antioxidant and heat stress responses. MARINE ENVIRONMENTAL RESEARCH 2023; 188:105977. [PMID: 37043840 DOI: 10.1016/j.marenvres.2023.105977] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 04/03/2023] [Accepted: 04/07/2023] [Indexed: 06/11/2023]
Abstract
Recently, P. nobilis populations have suffered a tremendous reduction, with pathogens potentially playing a crucial role. Considering its highly endangered status, mechanisms leading to mass mortalities were examined in one or multiple pathogens infected populations. Thus, seasonal antioxidant enzymatic activities, hsp70 and catalase mRNA levels, were investigated in two different Greek populations, during mass mortality events in summer of 2020. Samples were collected from Fthiotis and Lesvos during February (ToC 14 ± 1.2 and 15 ± 1 respectively), April (ToC 18 ± 1.2 and 17 ± 1.3 respectively), and June (ToC 24.5 ± 1.5 and 21.5 ± 1.5 respectively) 2020. In July of the same year (ToC 26.5 ± 1.7 in Fthiotis and 24.5 ± 1.7 in Lesvos), no live specimens were found. All biochemical parameters and phylogenetic analysis suggest that pathogen infection increases P. nobilis sensitivity to water temperature, subsequently leading to mass mortality. The latter was obvious in Fthiotis individuals, in which Haplosporidium pinnae was also observed with Mycobacterium spp., compared to Lesvos individuals.
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Affiliation(s)
- Athanasios Lattos
- Laboratory of Animal Physiology, Department of Zoology, School of Biology, Faculty of Science, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
| | - Dimitrios K Papadopoulos
- Laboratory of Animal Physiology, Department of Zoology, School of Biology, Faculty of Science, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
| | - Ioannis A Giantsis
- Department of Animal Science, Faculty of Agricultural Sciences, University of Western Macedonia, GR-53100, Florina, Greece
| | - Konstantinos Feidantsis
- Laboratory of Animal Physiology, Department of Zoology, School of Biology, Faculty of Science, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
| | - Ioannis Georgoulis
- Laboratory of Animal Physiology, Department of Zoology, School of Biology, Faculty of Science, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
| | - Dimitrios Karagiannis
- National Reference Laboratory for Mollusc Diseases, Ministry of Rural Development and Food, 7 Frixou Street, GR-54627, Thessaloniki, Greece
| | - Francesca Carella
- University of Naples Federico II, Department of Biology, Complesso di MSA, 80126, Naples, Italy
| | - Basile Michaelidis
- Laboratory of Animal Physiology, Department of Zoology, School of Biology, Faculty of Science, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece.
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Moro-Martínez I, Vázquez-Luis M, García-March JR, Prado P, Mičić M, Catanese G. Haplosporidium pinnae Parasite Detection in Seawater Samples. Microorganisms 2023; 11:1146. [PMID: 37317120 DOI: 10.3390/microorganisms11051146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/20/2023] [Accepted: 04/26/2023] [Indexed: 06/16/2023] Open
Abstract
In this study, we investigated the presence of the parasite Haplosporidium pinnae, which is a pathogen for the bivalve Pinna nobilis, in water samples from different environments. Fifteen mantle samples of P. nobilis infected by H. pinnae were used to characterize the ribosomal unit of this parasite. The obtained sequences were employed to develop a method for eDNA detection of H. pinnae. We collected 56 water samples (from aquaria, open sea and sanctuaries) for testing the methodology. In this work, we developed three different PCRs generating amplicons of different lengths to determine the level of degradation of the DNA, since the status of H. pinnae in water and, therefore, its infectious capacity are unknown. The results showed the ability of the method to detect H. pinnae in sea waters from different areas persistent in the environment but with different degrees of DNA fragmentation. This developed method offers a new tool for preventive analysis for monitoring areas and to better understand the life cycle and the spread of this parasite.
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Affiliation(s)
- Irene Moro-Martínez
- LIMIA-IRFAP Laboratorio de Investigaciones Marinas y Acuicultura-Govern de les Illes Balears, 07157 Port d'Andratx, Spain
| | - Maite Vázquez-Luis
- IEO-CSIC, Centro Oceanográfico de Baleares Instituto Español de Oceanografía, 07010 Palma de Mallorca, Spain
| | - José Rafael García-March
- IMEDMAR-UCV Instituto de Investigación en Medio Ambiente y Ciencia Marina, Universidad Católica de Valencia, 03710 Calpe, Spain
| | | | - Milena Mičić
- Aquarium Pula d.o.o., Ulica Verudella 33, 52100 Pula, Croatia
| | - Gaetano Catanese
- LIMIA-IRFAP Laboratorio de Investigaciones Marinas y Acuicultura-Govern de les Illes Balears, 07157 Port d'Andratx, Spain
- INAGEA (UIB)-Instituto de Investigaciones Agroambientales y de Economía del Agua, Universidad de las Islas Baleares, Carretera de Valldemossa, km 7.5, 07122 Palma, Spain
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9
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Lattos A, Feidantsis K, Giantsis IA, Theodorou JA, Michaelidis B. Seasonality in Synergism with Multi-Pathogen Presence Leads to Mass Mortalities of the Highly Endangered Pinna nobilis in Greek Coastlines: A Pathophysiological Approach. Microorganisms 2023; 11:1117. [PMID: 37317091 DOI: 10.3390/microorganisms11051117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/22/2023] [Accepted: 04/23/2023] [Indexed: 06/16/2023] Open
Abstract
Mortalities of Pinna nobilis populations set at risk the survival of the species from many Mediterranean coastline habitats. In many cases, both Haplosporidium pinnae and Mycobacterium spp. are implicated in mass mortalities of P. nobilis populations, leading the species into extinction. In the context of the importance of these pathogens' role in P. nobilis mortalities, the present study investigated two Greek populations of the species hosting different microbial loads (one only H. pinnae and the second both pathogens) by the means of pathophysiological markers. More specifically, the populations from Kalloni Gulf (Lesvos Island) and from Maliakos Gulf (Fthiotis), seasonally sampled, were chosen based on the host pathogens in order to investigate physiological and immunological biomarkers to assess those pathogens' roles. In order to determine if the haplosporidian parasite possesses a major role in the mortalities or if both pathogens are involved in these phenomena, a variety of biomarkers, including apoptosis, autophagy, inflammation and heat shock response were applied. The results indicated a decreased physiological performance of individuals hosting both pathogens in comparison with those hosting only H. pinnae. Our findings provide evidence for the synergistic role of those pathogens in the mortality events, which is also enhanced by the influence of seasonality.
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Affiliation(s)
- Athanasios Lattos
- Laboratory of Animal Physiology, Department of Zoology, Faculty of Science, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Konstantinos Feidantsis
- Laboratory of Animal Physiology, Department of Zoology, Faculty of Science, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Ioannis A Giantsis
- Department of Animal Science, Faculty of Agricultural Sciences, University of Western Macedonia, GR-53100 Florina, Greece
| | - John A Theodorou
- Department of Fisheries & Aquaculture, University of Patras, GR-23200 Mesolonghi, Greece
| | - Basile Michaelidis
- Laboratory of Animal Physiology, Department of Zoology, Faculty of Science, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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10
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Salis P, Peyran C, Morage T, de Bernard S, Nourikyan J, Coupé S, Bunet R, Planes S. RNA-Seq comparative study reveals molecular effectors linked to the resistance of Pinna nobilis to Haplosporidium pinnae parasite. Sci Rep 2022; 12:21229. [PMID: 36482098 PMCID: PMC9731998 DOI: 10.1038/s41598-022-25555-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
With the intensification of maritime traffic, recently emerged infectious diseases have become major drivers in the decline and extinction of species. Since 2016, mass mortality events have decimated the endemic Mediterranean Sea bivalve Pinna nobilis, affecting ca. 100% of individuals. These events have largely been driven by Haplosporidium pinnae's infection, an invasive species which was likely introduced by shipping. While monitoring wild populations of P. nobilis, we observed individuals that survived such a mass mortality event during the summer of 2018 (France). We considered these individuals resistant, as they did not show any symptoms of the disease, while the rest of the population in the area was devastated. Furthermore, the parasite was not detected when we conducted a PCR amplification of a species-specific fragment of the small subunit ribosomal DNA. In parallel, the transcriptomic analysis showed evidence of some parasite RNA indicating that the resistant individuals had been exposed to the parasite without proliferating. To understand the underlying mechanisms of resistance in these individuals, we compared their gene expression with that of susceptible individuals. We performed de novo transcriptome assembly and annotated the expressed genes. A comparison of the transcriptomes in resistant and susceptible individuals highlighted a gene expression signature of the resistant phenotype. We found significant differential expressions of genes involved in immunity and cell architecture. This data provides the first insights into how individuals escape the pathogenicity associated with infection.
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Affiliation(s)
- Pauline Salis
- PSL Research University: EPHE-UPVD-CNRS, UAR 3278 CRIOBE, 66860 Perpignan, France
| | - Claire Peyran
- PSL Research University: EPHE-UPVD-CNRS, UAR 3278 CRIOBE, 66860 Perpignan, France
| | - Titouan Morage
- PSL Research University: EPHE-UPVD-CNRS, UAR 3278 CRIOBE, 66860 Perpignan, France
| | | | | | - Stéphane Coupé
- grid.12611.350000000088437055CNRS/INSU, IRD, MIO UM 110, Mediterranean Institute of Oceanography, University of Toulon, 83130 La Garde, France
| | - Robert Bunet
- Institut Océanographique Paul Ricard, Ile des Embiez, 83140 Six-Fours-Les-Plages, France
| | - Serge Planes
- PSL Research University: EPHE-UPVD-CNRS, UAR 3278 CRIOBE, 66860 Perpignan, France ,grid.452595.aLaboratoire d’Excellence “CORAIL”, Perpignan, France
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11
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Hernandis S, Ibarrola I, Tena-Medialdea J, Vázquez-Luis M, García-March JR, Prado P, Albentosa M. Scope for growth and dietary needs of Mediteranean Pinnids maintained in captivity. BMC ZOOL 2022; 7:43. [PMID: 37170171 PMCID: PMC10127381 DOI: 10.1186/s40850-022-00141-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 07/05/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The measurement of the energy available for growth (scope of growth, SFG) can be used in bivalves to make a long-term prediction in a short-term experiment of the condition of the individual. In order to tackle the best conditions for captive maintenance of Mediterranean Pinnids, a SFG study was conducted using Pinna rudis as a model species. Three diets were examined to test the viability of live microalgae and commercial products: i) a control diet using 100% of live microalgae based on the species Isochrysis galbana (t-ISO), ii) a 100% of commercial microalgae diet based on the product Shellfish Diet 1800®, and iii) a 50/50% mix diet of I. galbana (t-ISO) and Shellfish Diet 1800®.
Results
SFG results showed significant differences among diets in the physiological functions measured and suggested lower acceptability and digestibility of the commercial product. Negative SFG values were obtained for the commercial diet which indicates that it should be rejected for both Pinnid maintenance. The mixed diet showed improved physiological performance compared to the commercial diet, resulting in a higher SFG that had no significant differences with the control diet. However, in the long-term, the lower digestibility of the mixed diet compared to the control diet could lead to a deterioration of individuals’ conditions and should be considered cautiously.
Conclusions
This work represents the first case study of SFG in Pinna spp. and provides fundamental data on dietary needs for the critically endangered species, P. nobilis.
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12
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Cortés-Melendreras E, Gomariz-Castillo F, Alonso-Sarría F, Giménez Martín FJ, Murcia J, Canales-Cáceres R, Ramos Esplá AA, Barberá C, Giménez-Casalduero F. The relict population of Pinna nobilis in the Mar Menor is facing an uncertain future. MARINE POLLUTION BULLETIN 2022; 185:114376. [PMID: 36423566 DOI: 10.1016/j.marpolbul.2022.114376] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/10/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
Pinna nobilis is undergoing one of the most dramatic events suffered by an endangered species. An emerging disease has relegated its populations to coastal lagoons or estuaries with salinities beyond the 36.5-39.7 psu range. The Mar Menor is one of two such locations on the Spanish coastline. Poor environmental conditions and eutrophication and anoxia events, that became critical in 2016, 2019 and 2021, have reduced its population in >99 %. In this work, the spatial distribution of the species within the lagoon and the factors determining its survival along the successive crises of eutrophication are studied using a two-stage (presence/absence estimation and density modelling) Species Distribution Model. A potential area of 200.97 ha and an average density of 1.05 ind.100 m2 is estimated for 2020. The viability of the Mar Menor population depends on management actions designed both for the species and to improve the lagoon environmental state.
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Affiliation(s)
| | - Francisco Gomariz-Castillo
- Departamento de Geografía, Universidad de Murcia, Instituto Universitario del Agua y del Medio Ambiente, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain; Marine Research Center of Santa Pola, University of Alicante, 03130 Santa Pola, Spain.
| | - Francisco Alonso-Sarría
- Departamento de Geografía, Universidad de Murcia, Instituto Universitario del Agua y del Medio Ambiente, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
| | | | - Javier Murcia
- Acuario de la Universidad de Murcia, Universidad de Murcia, 30002 Murcia, Spain
| | | | - Alfonso A Ramos Esplá
- Marine Research Center of Santa Pola, University of Alicante, 03130 Santa Pola, Spain; Departamento de Ciencias del Mar y Biología Aplicada, Universidad de Alicante, 03690, San Vicente del Raspeig, Alicante, Spain
| | - Carmen Barberá
- Marine Research Center of Santa Pola, University of Alicante, 03130 Santa Pola, Spain; Departamento de Ciencias del Mar y Biología Aplicada, Universidad de Alicante, 03690, San Vicente del Raspeig, Alicante, Spain
| | - Francisca Giménez-Casalduero
- Marine Research Center of Santa Pola, University of Alicante, 03130 Santa Pola, Spain; Departamento de Ciencias del Mar y Biología Aplicada, Universidad de Alicante, 03690, San Vicente del Raspeig, Alicante, Spain
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13
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Point pattern analysis as a tool for assessing disease spread and population features in remaining sanctuaries of the critically endangered bivalve Pinna nobilis. J Nat Conserv 2022. [DOI: 10.1016/j.jnc.2022.126221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Sanmartí N, Ontoria Y, Ricart AM, Arthur R, Alcoverro T, Pérez M, Romero J. Exploring coexistence mechanisms in a three-species assemblage. MARINE ENVIRONMENTAL RESEARCH 2022; 178:105647. [PMID: 35605380 DOI: 10.1016/j.marenvres.2022.105647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Interactions among species are essential in shaping ecological communities, although it is not always clear under what conditions they can persist when the number of species involved is higher than two. Here we describe a three-species assemblage involving the seagrass Cymodocea nodosa, the pen shell Pinna nobilis and the herbivore sea urchin Paracentrotus lividus, and we explore the mechanisms allowing its persistence through field observations and manipulative experiments. The abundance of pen shells was higher in seagrass beds than in bare sand, suggesting a recruitment facilitation. The presence of sea urchins, almost exclusively attached or around pen shells, indicated habitat facilitation for sea urchins, which overgrazed the meadow around the pen shells forming seagrass-free halos. Our results suggest that this system persists thanks to: (i) the behavioral reluctance of sea urchins to move far from pen shells, making their impact on seagrass strictly local, (ii) the sparse distribution of pen shells and (iii) the plant's resistance mechanisms to herbivory. Unpacking these mechanisms allows a better understanding of how ecological communities are assembled.
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Affiliation(s)
- Neus Sanmartí
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain.
| | - Yaiza Ontoria
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain
| | - Aurora M Ricart
- Bigelow Laboratory for Ocean Sciences, 60 Bigelow Dr, East Boothbay, ME, 04544, USA
| | - Rohan Arthur
- Centre d'Estudis Avançats de Blanes (CEAB-CSIC), Accés a la cala Sant Francesc, 14, 17300, Blanes, Spain; Nature Conservation Foundation, 3076/5, 4th Cross, Gokulam Park, 570 002, Mysore, Karnataka, India
| | - Teresa Alcoverro
- Centre d'Estudis Avançats de Blanes (CEAB-CSIC), Accés a la cala Sant Francesc, 14, 17300, Blanes, Spain; Nature Conservation Foundation, 3076/5, 4th Cross, Gokulam Park, 570 002, Mysore, Karnataka, India
| | - Marta Pérez
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain
| | - Javier Romero
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain
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15
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Catanese G, Tena-Medialdea J, Dajković MAB, Mičić M, García-March JR. An incubation water eDNA method for a non-destructive rapid molecular identification of Pinna nobilis and Pinna rudis bivalve juveniles. MethodsX 2022; 9:101708. [PMID: 35518917 PMCID: PMC9062727 DOI: 10.1016/j.mex.2022.101708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 04/13/2022] [Indexed: 11/24/2022] Open
Abstract
The pen shell Pinna nobilis is critically endangered due to a disease that has affected all open water populations since late 2016. Collection of early spats is considered a fundamental step for pen shell conservation. However, the identification between P. nobilis and P. rudis juveniles by morphology is a very difficult task. Furthermore, due to the small size of juveniles and high sensitivity to handling, the sampling for this purpose must not damage individuals. As a consequence, the application of molecular techniques for conservation strategies to identify threatened and endangered bivalve species is every day more and more necessary. In this study, we present the development of a multiplex-PCR procedure for the rapid identification of two Pinna species from eDNA water samples. Using species-specific primers, designed in the rRNA16S and rRNA12S mitochondrial genes, identification of species was obtained by cellular or extracellular DNA dissolved in water and differentiated based on the size of the amplified DNA fragments. • Development of a molecular multiplex-PCR procedure for the rapid identification of two Pinna species from eDNA water samples • Using specie-specific primers, the different species can be differentiated basing on the size of the amplified DNA fragments • This technique removes many of the limitations commonly associated with sampling of threatened and endangered juvenile bivalves for conservation strategies (sampling does not damage individuals).
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16
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Giorgio Tiscar P, Rubino F, Paoletti B, Di Francesco CE, Mosca F, Della Salda L, Hattab J, Smoglica C, Morelli S, Fanelli G. New insights about Haplosporidium pinnae and the pen shell Pinna nobilis mass mortality events. J Invertebr Pathol 2022; 190:107735. [PMID: 35247465 DOI: 10.1016/j.jip.2022.107735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 12/29/2021] [Accepted: 02/21/2022] [Indexed: 10/19/2022]
Abstract
Since early autumn 2016, Mass Mortality Events (MME) have drastically impacted the population of the fan mussel Pinna nobilis in the Mediterranean Sea. Haplosporidium pinnae, a newly described Haplosporidian species, has been considered the causative agent of the mortality outbreaks in association to opportunistic bacterial pathogens. In the present study, we first reported a cytological description of H. pinnae in moribund specimens of P. nobilis which were collected in the Gulf of Taranto (Ionian Sea, Italy) during summer 2018. Different life-cycle stages of the parasite, including uni- and binucleate cells, small plasmodia, big multinucleate plasmodia and sporocysts with spores, were detected in all the examined animals and most of the parasite cells were present in gills, mantle and digestive gland, while the spores were found only in the latter organ. Histology and molecular biology were also performed, confirming the nature of the infectious agent, as already reported in the area. Additionally, molecular study revealed the presence of the Mycobacterium ulcerans - M. marinum complex but no evident macroscopical or microscopical lesions, just as no bacteria referred to Mycobacterium were observed. In conclusion, the present study aimed to provide further contributions to the understanding of the mortality of P. nobilis, pointing on the role of the cytological method of investigation both for diagnostic and epidemiological purposes, and discussing about the current epidemic situation in the Adriatic sea.
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Affiliation(s)
| | | | - Barbara Paoletti
- Faculty of Veterinary Medicine, University of Teramo, Piano D'Accio, Teramo, Italy
| | | | - Francesco Mosca
- Faculty of Veterinary Medicine, University of Teramo, Piano D'Accio, Teramo, Italy
| | - Leonardo Della Salda
- Faculty of Veterinary Medicine, University of Teramo, Piano D'Accio, Teramo, Italy
| | - Jasmine Hattab
- Faculty of Veterinary Medicine, University of Teramo, Piano D'Accio, Teramo, Italy
| | - Camilla Smoglica
- Faculty of Veterinary Medicine, University of Teramo, Piano D'Accio, Teramo, Italy
| | - Simone Morelli
- Faculty of Veterinary Medicine, University of Teramo, Piano D'Accio, Teramo, Italy
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17
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Detection of Haplosporidium pinnae from Pinna nobilis Faeces. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2022. [DOI: 10.3390/jmse10020276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Pinna nobilis (Linnaeus, 1758) is the largest bivalve endemic to the Mediterranean. It is distributed in a wide range of coastal environments, including estuaries. Pinna nobilis has recently become a critically endangered species (with almost 100% mortality) along the entire Spanish Mediterranean coast. This may be due to coinfections caused by Haplosporidium pinnae and bacterial pathogens such as Mycobacterium spp. We extensively sampled P. nobilis from Mar Menor lagoon (SE Spain), a site where individuals still survive. Using conventional PCR, we found Haplosporidium spp. in 7.1% of mantle and faecal DNA samples in different individuals of P. nobilis. We identified and quantified Haplosporidium pinnae in P. nobilis using Sanger sequencing and qPCR. Faecal H. pinnae detection is non-invasive, unlike biopsies. Therefore, this non-lethal and non-invasive sampling method could contribute to the welfare of living populations, particularly in eutrophic environments, where they are prone to septicaemia. The use of faecal DNA analysis could be a major advance in epidemiology and recovery assessment studies of P. nobilis.
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18
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Pérez-Burillo J, Valoti G, Witkowski A, Prado P, Mann DG, Trobajo R. Assessment of marine benthic diatom communities: insights from a combined morphological-metabarcoding approach in Mediterranean shallow coastal waters. MARINE POLLUTION BULLETIN 2022; 174:113183. [PMID: 35090287 DOI: 10.1016/j.marpolbul.2021.113183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/16/2021] [Accepted: 11/20/2021] [Indexed: 06/14/2023]
Abstract
We investigated the advantages and disadvantages of light microscope (LM)-based identifications and DNA metabarcoding, based on a 312-bp rbcL marker, for examining benthic diatom communities from Mediterranean shallow coastal environments. For this, we used biofilm samples collected from different substrata in the Ebro delta bays. We show that 1) Ebro delta bays harbour high-diversity diatom communities [LM identified 249 taxa] and 2) DNA metabarcoding effectively reflects this diversity at genus- but not species level, because of the incompleteness of the DNA reference library. Nevertheless, DNA metabarcoding offers new opportunities for detecting small, delicate and rare diatom species missed by LM and diatoms that lack silica frustules. The primers used, though designed for diatoms, successfully amplified rarely reported members of other stramenopile groups. Combining LM and DNA approaches offers stronger support for ecological studies of benthic microalgal communities in shallow coastal environments than using either approach on its own.
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Affiliation(s)
- Javier Pérez-Burillo
- IRTA-Institute for Food and Agricultural Research and Technology, Marine and Continental Waters Programme, Ctra de Poble Nou Km 5.5, E43540 Sant Carles de la Ràpita, Tarragona, Spain; Departament de Geografia, Universitat Rovira i Virgili, C/ Joanot Martorell 15, E43500 Vila-seca, Tarragona, Spain
| | - Greta Valoti
- Università Politecnica delle Marche, Piazza Roma, 22, IT60131 Ancona, Italy
| | - Andrzej Witkowski
- Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16a, 70-383 Szczecin, Poland
| | - Patricia Prado
- IRTA-Institute for Food and Agricultural Research and Technology, Marine and Continental Waters Programme, Ctra de Poble Nou Km 5.5, E43540 Sant Carles de la Ràpita, Tarragona, Spain
| | - David G Mann
- IRTA-Institute for Food and Agricultural Research and Technology, Marine and Continental Waters Programme, Ctra de Poble Nou Km 5.5, E43540 Sant Carles de la Ràpita, Tarragona, Spain; Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, Scotland, UK
| | - Rosa Trobajo
- IRTA-Institute for Food and Agricultural Research and Technology, Marine and Continental Waters Programme, Ctra de Poble Nou Km 5.5, E43540 Sant Carles de la Ràpita, Tarragona, Spain.
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19
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Peyran C, Boissin E, Morage T, Nebot‐Colomer E, Iwankow G, Planes S. Investigating population dynamics from parentage analysis in the highly endangered fan mussel Pinna nobilis. Ecol Evol 2022; 12:e8482. [PMID: 35127019 PMCID: PMC8796933 DOI: 10.1002/ece3.8482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 11/09/2022] Open
Abstract
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, Pinna nobilis, which is facing a major crisis that threatens its survival as most of its populations have been decimated by a parasite, Haplosporidium pinnae. 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 (H o) 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 P. nobilis 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 H. pinnae, these results will have to be considered when choosing a location to reintroduce individuals in potential future rescue plans.
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Affiliation(s)
- Claire Peyran
- EPHE – UPVD – CNRSUSR 3278 CRIOBEPSL Research UniversityPerpignanFrance
| | - Emilie Boissin
- EPHE – UPVD – CNRSUSR 3278 CRIOBEPSL Research UniversityPerpignanFrance
- Laboratoire d'Excellence «CORAIL»PerpignanFrance
| | - Titouan Morage
- EPHE – UPVD – CNRSUSR 3278 CRIOBEPSL Research UniversityPerpignanFrance
| | - Elisabet Nebot‐Colomer
- EPHE – UPVD – CNRSUSR 3278 CRIOBEPSL Research UniversityPerpignanFrance
- Instituto Español de Oceanografía (IEO, CSIC), Centro Oceanográfico de BalearesPalma de MallorcaSpain
| | - Guillaume Iwankow
- EPHE – UPVD – CNRSUSR 3278 CRIOBEPSL Research UniversityPerpignanFrance
| | - Serge Planes
- EPHE – UPVD – CNRSUSR 3278 CRIOBEPSL Research UniversityPerpignanFrance
- Laboratoire d'Excellence «CORAIL»PerpignanFrance
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20
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Peyran C, Morage T, Nebot-Colomer E, Iwankow G, Planes S. Unexpected residual habitats raise hope for the survival of the fan mussel Pinna nobilis along the Occitan coast (North-West Mediterranean Sea). ENDANGER SPECIES RES 2022. [DOI: 10.3354/esr01191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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