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Shin CP, Allmon WD. How we study cryptic species and their biological implications: A case study from marine shelled gastropods. Ecol Evol 2023; 13:e10360. [PMID: 37680961 PMCID: PMC10480071 DOI: 10.1002/ece3.10360] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/10/2023] [Accepted: 07/13/2023] [Indexed: 09/09/2023] Open
Abstract
Methodological and biological considerations are intertwined when studying cryptic species. A potentially large component of modern biodiversity, the frequency of cryptic species among taxonomic groups is not well documented. The term "cryptic species" is imprecisely used in scientific literature, causing ambiguity when interpreting their evolutionary and ecological significance. This study reviews how cryptic species have been defined, discussing implications for taxonomy and biology, and explores these implications with a case study based on recently published literature on extant shelled marine gastropods. Reviewed gastropods were recorded by species. Records of cryptic gastropods were presented by authors with variable levels of confidence but were difficult to disentangle from inherent biases in the study effort. These complexities notwithstanding, most gastropod species discussed were not cryptic. To the degree that this review's sample represents extinct taxa, the results suggest that a high proportion of shelled marine gastropod species are identifiable for study in the fossil record. Much additional work is needed to provide a more adequate understanding of the relative frequency of cryptic species in shelled marine gastropods, which should start with more explicit definitions and targeted case studies.
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Affiliation(s)
- Caren P. Shin
- Department of Earth and Atmospheric SciencesCornell UniversityIthacaNew YorkUSA
- Paleontological Research InstitutionIthacaNew YorkUSA
| | - Warren D. Allmon
- Department of Earth and Atmospheric SciencesCornell UniversityIthacaNew YorkUSA
- Paleontological Research InstitutionIthacaNew YorkUSA
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2
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Baptista L, Fassio G, Gofas S, Oliverio M, P Ávila S, M Santos A. Evaluating the taxonomic status of the large sized Tricolia Risso, 1826 in the Northeast Atlantic and Mediterranean Sea. Mol Phylogenet Evol 2023:107857. [PMID: 37315708 DOI: 10.1016/j.ympev.2023.107857] [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: 08/16/2022] [Revised: 06/06/2023] [Accepted: 06/08/2023] [Indexed: 06/16/2023]
Abstract
Despite a long history of taxonomic studies on the genus Tricolia Risso, 1826, there is a shortfall on thorough systematic molecular reviews of the taxon from the NE Atlantic and Mediterranean coasts. Aiming to assess the genetic distinctness among morphospecies and the taxonomic status of currently accepted large sized species in these areas, we conducted a molecular phylogenetic analysis of the genus based on one mitochondrial (cox1) and two nuclear (28S and ITS2) markers. Seven Tricolia species were consistently retrieved in the analyses, including a new genetic lineage in the NE Atlantic designated as Tricolia sp. 1. Molecular analyses revealed that only one species, T. azorica, occurs in the NE Atlantic archipelagos. The sister taxa T. pullus (Mediterranean) and T. picta (NE Atlantic) should be classified as distinct species, instead of subspecies of the T. pullus group (sensu Gofas 1982). Tricolia miniata is also a complex of species in the Mediterranean and future studies across the distribution range are necessary to clarify its status.
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Affiliation(s)
- Lara Baptista
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, 9501-801 Ponta Delgada, Açores, Portugal; MPB-Marine Palaeontology and Biogeography Lab, University of the Azores, Rua da Mãe de Deus, 9501-801 Ponta Delgada, Açores, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal; UNESCO Chair - Land Within Sea: Biodiversity & Sustainability in Atlantic Islands, Universidade dos Açores, R. Mãe de Deus 13A, 9500-321 Ponta Delgada, Portugal; Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 1021/1055, 4169-007 Porto, Portugal.
| | - Giulia Fassio
- Dipartimento di Biologia e Biotecnologie 'Charles Darwin', Sapienza Università di Roma, Viale dell'Università 32, I-00185, Rome, Italy and NBFC, National Biodiversity Future Center, Palermo 90133, Italy
| | - Serge Gofas
- Departamento de Biología Animal, Facultad de Ciencias, Universidad de MálagaE-29071 Málaga, Spain; Muséum National d'Histoire Naturelle, Paris, France
| | - Marco Oliverio
- Dipartimento di Biologia e Biotecnologie 'Charles Darwin', Sapienza Università di Roma, Viale dell'Università 32, I-00185, Rome, Italy and NBFC, National Biodiversity Future Center, Palermo 90133, Italy
| | - Sérgio P Ávila
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, 9501-801 Ponta Delgada, Açores, Portugal; MPB-Marine Palaeontology and Biogeography Lab, University of the Azores, Rua da Mãe de Deus, 9501-801 Ponta Delgada, Açores, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal; UNESCO Chair - Land Within Sea: Biodiversity & Sustainability in Atlantic Islands, Universidade dos Açores, R. Mãe de Deus 13A, 9500-321 Ponta Delgada, Portugal; Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 1021/1055, 4169-007 Porto, Portugal; Departamento de Biologia, Faculdade de Ciências e Tecnologia, Universidade dos Açores, 9501-801 Ponta Delgada, Açores, Portugal
| | - António M Santos
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal; Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 1021/1055, 4169-007 Porto, Portugal; CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, no. 7, 4485-661 Vairão, Portugal
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3
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Abalde S, Crocetta F, Tenorio MJ, D'Aniello S, Fassio G, Rodríguez-Flores PC, Uribe JE, M L Afonso C, Oliverio M, Zardoya R. Hidden species diversity and mito-nuclear discordance within the Mediterranean cone snail, Lautoconus ventricosus. Mol Phylogenet Evol 2023:107838. [PMID: 37286063 DOI: 10.1016/j.ympev.2023.107838] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 05/15/2023] [Accepted: 05/31/2023] [Indexed: 06/09/2023]
Abstract
The Mediterranean cone snail, Lautoconus ventricosus, is currently considered a single species inhabiting the whole Mediterranean basin and the adjacent Atlantic coasts. Yet, no population genetic study has assessed its taxonomic status. Here, we collected 245 individuals from 75 localities throughout the Mediterranean Sea and used cox1 barcodes, complete mitochondrial genomes, and genome skims to test whether L. ventricosus represents a complex of cryptic species. The maximum likelihood phylogeny based on complete mitochondrial genomes recovered six main clades (hereby named blue, brown, green, orange, red, and violet) with sufficient sequence divergence to be considered putative species. On the other hand, phylogenomic analyses based on 437 nuclear genes only recovered four out of the six clades: blue and orange clades were thoroughly mixed and the brown one was not recovered. This mito-nuclear discordance revealed instances of incomplete lineage sorting and introgression, and may have caused important differences in the dating of main cladogenetic events. Species delimitation tests proposed the existence of at least three species: green, violet, and red+blue+orange (i.e., cyan). Green plus cyan (with sympatric distributions) and violet, had West and East Mediterranean distributions, respectively, mostly separated by the Siculo-Tunisian biogeographical barrier. Morphometric analyses of the shell using species hypotheses as factor and shell length as covariate showed that the discrimination power of the studied parameters was only 70.2%, reinforcing the cryptic nature of the uncovered species, and the importance of integrative taxonomic approaches considering morphology, ecology, biogeography, and mitochondrial and nuclear population genetic variation.
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Affiliation(s)
- Samuel Abalde
- Department of Zoology, Swedish Museum of Natural History, Box 50007, 10405 Stockholm, Sweden; Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain.
| | - Fabio Crocetta
- Department of Integrative Marine Ecology (EMI), Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy
| | - Manuel J Tenorio
- Departamento CMIM y Q. Inorgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
| | - Salvatore D'Aniello
- Department of Biology and Evolution of Marine Organisms (BEOM), Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy
| | - Giulia Fassio
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, Zoology-Viale dell'Università 32, 00185 Rome, Italy
| | - Paula C Rodríguez-Flores
- Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain; Museum of Comparative Zoology, Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge MA 02138, USA
| | - Juan E Uribe
- Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Carlos M L Afonso
- Centre of Marine Sciences (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005 - 139 Faro, Portugal
| | - Marco Oliverio
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, Zoology-Viale dell'Università 32, 00185 Rome, Italy
| | - Rafael Zardoya
- Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain
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Revealing the diversity of the green Eulalia (Annelida, Phyllodocidae) species complex along the European coast, with description of three new species. ORG DIVERS EVOL 2023. [DOI: 10.1007/s13127-022-00597-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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5
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López-Márquez V, Cushman SA, Templado J, Wan HY, Bothwell HM, Machordom A. Genetic connectivity of two marine gastropods in the Mediterranean Sea: seascape genetics reveals species-specific oceanographic drivers of gene flow. Mol Ecol 2021; 30:4608-4629. [PMID: 34260775 DOI: 10.1111/mec.16080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 06/18/2021] [Accepted: 06/23/2021] [Indexed: 11/28/2022]
Abstract
Oceanographic features such as currents, waves, temperature and salinity, together with life history traits, control patterns and rates of gene flow and contribute to shaping the population genetic structure of marine organisms. Seascape genetics is an emerging discipline that adopts a spatially explicit approach to examine biotic and abiotic factors that drive gene flow in marine environments. In this study, we examined factors that contribute to genetic differentiation in two coastal Mediterranean gastropods whose geographical ranges overlap but which inhabit different environments. The two species differ in several life history traits and in their dispersal capabilities. Genetic differentiation was relatively low for the trochid species Gibbula divaricata (FST =0.059), and high for the vermetid species Dendropoma lebeche (FST =0.410). Salinity emerged as the most important variable explaining the genetic structure of both species; sea surface temperature was also important for G. divaricata. For the more sessile D. lebeche, the coastline was predicted to provide important pathways for stepping-stone connectivity and gene flow. Our results provide a greater understanding of the factors influencing marine population connectivity, which may be useful to guide marine conservation and management in the Mediterranean.
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Affiliation(s)
| | - Samuel A Cushman
- USDA Forest Service Rocky Mountain Research Station, Flagstaff, AZ, USA
| | - José Templado
- Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain
| | - Ho Yi Wan
- Department of Wildlife, Humboldt State University, Arcata, CA, USA
| | - Helen M Bothwell
- Research School of Biology, Australian National University, Canberra, ACT, Australia
| | - Annie Machordom
- Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain
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6
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Gefen-Treves S, Bartholomäus A, Horn F, Zaborowski AB, Tchernov D, Wagner D, Oren A, Kaplan A. The Microbiome Associated with the Reef Builder Neogoniolithon sp. in the Eastern Mediterranean. Microorganisms 2021; 9:microorganisms9071374. [PMID: 34202696 PMCID: PMC8306765 DOI: 10.3390/microorganisms9071374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 01/04/2023] Open
Abstract
The development of coastal vermetid reefs and rocky shores depends on the activity of several reef builders, including red crustose coralline algae (CCA) such as Neogoniolithon sp. To initiate studies on the interaction between Neogoniolithon sp. and its associated bacteria, and their impact on the algae physiological performance, we characterized the bacterial community by 16S rRNA gene sequencing. These were extracted from the algal tissue and adjacent waters along two sampling campaigns (during winter and spring), in three study regions along a reef in the east Mediterranean Israeli coast and from laboratory-grown algae. The analysis revealed that aquaria and field communities differ substantially, suggesting that future research on Neogoniolithon sp. interaction with its microbiome must rest on aquaria that closely simulate coastal conditions. Some prokaryote classes found associated with the alga tissue were hardly detected or absent from surrounding water. Further, bacterial populations differed between sampling campaigns. One example is the presence of anaerobic bacteria and archaea families in one of the campaigns, correlating with the weaker turbulence in the spring season, probably leading to the development of local anoxic conditions. A better understanding of reef-building activity of CCA and their associated bacteria is necessary for assessment of their resilience to climate change and may support coastal preservation efforts.
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Affiliation(s)
- Shany Gefen-Treves
- Department of Plant and Environmental Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 9190401, Israel; (S.G.-T.); (A.O.)
- GFZ German Research Centre for Geosciences, Section Geomicrobiology, 14473 Potsdam, Germany; (A.B.); (F.H.); (D.W.)
| | - Alexander Bartholomäus
- GFZ German Research Centre for Geosciences, Section Geomicrobiology, 14473 Potsdam, Germany; (A.B.); (F.H.); (D.W.)
| | - Fabian Horn
- GFZ German Research Centre for Geosciences, Section Geomicrobiology, 14473 Potsdam, Germany; (A.B.); (F.H.); (D.W.)
| | - Adam Boleslaw Zaborowski
- Bioinformatics Group, Max Planck Institute for Molecular Plant Physiology, 14476 Potsdam-Golm, Germany;
| | - Dan Tchernov
- Leon H. Charney School of Marine Sciences, University of Haifa, Haifa 3498838, Israel;
| | - Dirk Wagner
- GFZ German Research Centre for Geosciences, Section Geomicrobiology, 14473 Potsdam, Germany; (A.B.); (F.H.); (D.W.)
- Institute of Geosciences, University of Potsdam, 14476 Potsdam, Germany
| | - Aharon Oren
- Department of Plant and Environmental Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 9190401, Israel; (S.G.-T.); (A.O.)
| | - Aaron Kaplan
- Department of Plant and Environmental Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 9190401, Israel; (S.G.-T.); (A.O.)
- Correspondence: ; Tel.: +972-2-658-5234
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7
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Bowen BW, Forsman ZH, Whitney JL, Faucci A, Hoban M, Canfield SJ, Johnston EC, Coleman RR, Copus JM, Vicente J, Toonen RJ. Species Radiations in the Sea: What the Flock? J Hered 2021; 111:70-83. [PMID: 31943081 DOI: 10.1093/jhered/esz075] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 11/06/2019] [Indexed: 12/13/2022] Open
Abstract
Species flocks are proliferations of closely-related species, usually after colonization of depauperate habitat. These radiations are abundant on oceanic islands and in ancient freshwater lakes, but rare in marine habitats. This contrast is well documented in the Hawaiian Archipelago, where terrestrial examples include the speciose silverswords (sunflower family Asteraceae), Drosophila fruit flies, and honeycreepers (passerine birds), all derived from one or a few ancestral lineages. The marine fauna of Hawai'i is also the product of rare colonization events, but these colonizations usually yield only one species. Dispersal ability is key to understanding this evolutionary inequity. While terrestrial fauna rarely colonize between oceanic islands, marine fauna with pelagic larvae can make this leap in every generation. An informative exception is the marine fauna that lack a pelagic larval stage. These low-dispersal species emulate a "terrestrial" mode of reproduction (brooding, viviparity, crawl-away larvae), yielding marine species flocks in scattered locations around the world. Elsewhere, aquatic species flocks are concentrated in specific geographic settings, including the ancient lakes of Baikal (Siberia) and Tanganyika (eastern Africa), and Antarctica. These locations host multiple species flocks across a broad taxonomic spectrum, indicating a unifying evolutionary phenomenon. Hence marine species flocks can be singular cases that arise due to restricted dispersal or other intrinsic features, or they can be geographically clustered, promoted by extrinsic ecological circumstances. Here, we review and contrast intrinsic cases of species flocks in individual taxa, and extrinsic cases of geological/ecological opportunity, to elucidate the processes of species radiations.
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Affiliation(s)
- Brian W Bowen
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Zac H Forsman
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Jonathan L Whitney
- Joint Institute for Marine and Atmospheric Research, University of Hawai'i, Honolulu, HI
| | - Anuschka Faucci
- Math & Sciences Division, Leeward Community College, University of Hawai'i, Pearl City, HI
| | - Mykle Hoban
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | | | - Erika C Johnston
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Richard R Coleman
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Joshua M Copus
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Jan Vicente
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Robert J Toonen
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
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Bouzaza Z, Vera M, Mezali K. Population genetic structure of the endangered limpet Patella ferruginea (Gastropoda: Patellidae) in the western Mediterranean: new evidence implicating marine barriers’ effects. MOLLUSCAN RESEARCH 2021. [DOI: 10.1080/13235818.2020.1857932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Zoheir Bouzaza
- Protection, Valorisation of Coastal Marine Resources and Molecular Systematic Laboratory, Department of Marine Science and Aquaculture, Faculty of Natural Sciences and Life, Abdelhamid Ibn Badis University-Mostaganem, Mostaganem, Algeria
| | - Manuel Vera
- Department of Zoology, Genetics and Physical Antrhopology, Faculty of Veterinary, University of Santiago de Compostela Lugo, Spain
| | - Karim Mezali
- Protection, Valorisation of Coastal Marine Resources and Molecular Systematic Laboratory, Department of Marine Science and Aquaculture, Faculty of Natural Sciences and Life, Abdelhamid Ibn Badis University-Mostaganem, Mostaganem, Algeria
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9
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Albano PG, Steger J, Bošnjak M, Dunne B, Guifarro Z, Turapova E, Hua Q, Kaufman DS, Rilov G, Zuschin M. Native biodiversity collapse in the eastern Mediterranean. Proc Biol Sci 2021; 288:20202469. [PMID: 33402072 PMCID: PMC7892420 DOI: 10.1098/rspb.2020.2469] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/07/2020] [Indexed: 12/11/2022] Open
Abstract
Global warming causes the poleward shift of the trailing edges of marine ectotherm species distributions. In the semi-enclosed Mediterranean Sea, continental masses and oceanographic barriers do not allow natural connectivity with thermophilic species pools: as trailing edges retreat, a net diversity loss occurs. We quantify this loss on the Israeli shelf, among the warmest areas in the Mediterranean, by comparing current native molluscan richness with the historical one obtained from surficial death assemblages. We recorded only 12% and 5% of historically present native species on shallow subtidal soft and hard substrates, respectively. This is the largest climate-driven regional-scale diversity loss in the oceans documented to date. By contrast, assemblages in the intertidal, more tolerant to climatic extremes, and in the cooler mesophotic zone show approximately 50% of the historical native richness. Importantly, approximately 60% of the recorded shallow subtidal native species do not reach reproductive size, making the shallow shelf a demographic sink. We predict that, as climate warms, this native biodiversity collapse will intensify and expand geographically, counteracted only by Indo-Pacific species entering from the Suez Canal. These assemblages, shaped by climate warming and biological invasions, give rise to a 'novel ecosystem' whose restoration to historical baselines is not achievable.
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Affiliation(s)
- Paolo G. Albano
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Jan Steger
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Marija Bošnjak
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
- Croatian Natural History Museum, Demetrova 1, Zagreb, Croatia
| | - Beata Dunne
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Zara Guifarro
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Elina Turapova
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Quan Hua
- Australian Nuclear Science and Technology Organisation, Kirrawee DC, New South Wales 2232, Australia
| | - Darrell S. Kaufman
- School of Earth and Sustainability, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Gil Rilov
- National Institute of Oceanography, Israel Oceanographic and Limnological Research (IOLR), Haifa 3108001, Israel
| | - Martin Zuschin
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
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10
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Scarpa F, Sanna D, Azzena I, Mugetti D, Cerruti F, Hosseini S, Cossu P, Pinna S, Grech D, Cabana D, Pasquini V, Esposito G, Cadoni N, Atzori F, Antuofermo E, Addis P, Sechi LA, Prearo M, Peletto S, Mossa MA, Saba T, Gazale V, Casu M. Multiple Non-Species-Specific Pathogens Possibly Triggered the Mass Mortality in Pinna nobilis. Life (Basel) 2020; 10:life10100238. [PMID: 33066230 PMCID: PMC7650684 DOI: 10.3390/life10100238] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/03/2020] [Accepted: 10/09/2020] [Indexed: 12/12/2022] Open
Abstract
The fan mussel, Pinna nobilis, represents the largest bivalve endemic to the Mediterranean Sea. Since 2016, dramatic mass mortality of this species has been observed in several areas. The first surveys suggested that Haplosporidium pinnae (currently considered species-specific) was the main etiological agent, but recent studies have indicated that a multifactorial disease may be responsible for this phenomenon. In this study, we performed molecular diagnostic analyses on P. nobilis, P. rudis, and bivalve heterologous host species from the island of Sardinia to shed further light on the pathogens involved in the mass mortality. The results support the occurrence of a multifactorial disease and that Mycobacterium spp. and H. pinnae are not necessarily associated with the illness. Indeed, our analyses revealed that H. pinnae is not species-specific for P. nobilis, as it was present in other bivalves at least three years before the mass mortality began, and species of Mycobacterium were also found in healthy individuals of P. nobilis and P. rudis. We also detected the species Rhodococcus erythropolis, representing the first report in fan mussels of a bacterium other than Mycobacterium spp. and Vibrio spp. These results depict a complicated scenario, further demonstrating how the P. nobilis mass mortality event is far from being fully understood.
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Affiliation(s)
- Fabio Scarpa
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (F.S.); (I.A.); (P.C.); (G.E.); (E.A.); (M.C.)
| | - Daria Sanna
- Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy; (S.H.); (L.A.S.)
- Correspondence:
| | - Ilenia Azzena
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (F.S.); (I.A.); (P.C.); (G.E.); (E.A.); (M.C.)
- Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy; (S.H.); (L.A.S.)
| | - Davide Mugetti
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Via Bologna 148, 10154 Torino, Italy; (D.M.); (F.C.); (M.P.); (S.P.)
| | - Francesco Cerruti
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Via Bologna 148, 10154 Torino, Italy; (D.M.); (F.C.); (M.P.); (S.P.)
| | - Sepideh Hosseini
- Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy; (S.H.); (L.A.S.)
| | - Piero Cossu
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (F.S.); (I.A.); (P.C.); (G.E.); (E.A.); (M.C.)
| | - Stefania Pinna
- IMC-International Marine Centre, Loc. Sa Mardini, Torregrande, 09170 Oristano, Italy; (S.P.); (D.G.); (D.C.)
| | - Daniele Grech
- IMC-International Marine Centre, Loc. Sa Mardini, Torregrande, 09170 Oristano, Italy; (S.P.); (D.G.); (D.C.)
| | - David Cabana
- IMC-International Marine Centre, Loc. Sa Mardini, Torregrande, 09170 Oristano, Italy; (S.P.); (D.G.); (D.C.)
| | - Viviana Pasquini
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, Via Fiorelli 1, 09126 Cagliari, Italy; (V.P.); (P.A.)
| | - Giuseppe Esposito
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (F.S.); (I.A.); (P.C.); (G.E.); (E.A.); (M.C.)
| | - Nicoletta Cadoni
- Area Marina Protetta Capo Carbonara, Comune di Villasimius, Via Roma 60, 09049 Villasimius, Italy; (N.C.); (F.A.)
| | - Fabrizio Atzori
- Area Marina Protetta Capo Carbonara, Comune di Villasimius, Via Roma 60, 09049 Villasimius, Italy; (N.C.); (F.A.)
| | - Elisabetta Antuofermo
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (F.S.); (I.A.); (P.C.); (G.E.); (E.A.); (M.C.)
| | - Piero Addis
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, Via Fiorelli 1, 09126 Cagliari, Italy; (V.P.); (P.A.)
| | - Leonardo Antonio Sechi
- Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy; (S.H.); (L.A.S.)
| | - Marino Prearo
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Via Bologna 148, 10154 Torino, Italy; (D.M.); (F.C.); (M.P.); (S.P.)
| | - Simone Peletto
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Via Bologna 148, 10154 Torino, Italy; (D.M.); (F.C.); (M.P.); (S.P.)
| | - Marianna A. Mossa
- Regiona autonoma della Sardegna, Via Roma 80, 09123 Cagliari, Italy; (M.A.M.); (T.S.)
| | - Tiziana Saba
- Regiona autonoma della Sardegna, Via Roma 80, 09123 Cagliari, Italy; (M.A.M.); (T.S.)
| | - Vittorio Gazale
- Area Marina Protetta “Isola dell’Asinara”, 07046 Porto Torres, Italy;
| | - Marco Casu
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (F.S.); (I.A.); (P.C.); (G.E.); (E.A.); (M.C.)
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11
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Two Seas for One Great Diversity: Checklist of the Marine Heterobranchia (Mollusca; Gastropoda) from the Salento Peninsula (South-East Italy). DIVERSITY 2020. [DOI: 10.3390/d12050171] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The Salento peninsula is a portion of the Italian mainland separating two distinct Mediterranean basins, the Ionian and the Adriatic seas. Several authors have studied the marine Heterobranchia (Mollusca, Gastropoda) fauna composition living in the Ionian Sea, but to date further knowledge regarding this interesting group of mollusks is still needed. Recent studies have corroborated the peculiarity of the Mediterranean Sea showing high levels of endemism and cryptic diversity. On the other hand, marine sea slugs have been revealed to be important indicators of the marine ecosystem’s health, due to their species-specific diet that consist of a vast variety of sessile and benthic invertebrates. A baseline study of the marine Heterobranchia diversity is therefore a necessary step to reveal the hidden diversity and to monitor the possible presence of alien species. The present study shows results from approximately 600 scientific dives carried out during a nine-year period in all of the main submarine habitats of the studied area, while accounting for the marine Heterobranchia from both the Ionian and Adriatic Seas. With this contribution, the list of marine Heterobranchia inhabiting the Salento Peninsula rises to 160. Furthermore, it also reports, for the first time, the presence of one alien species and three new records for Italian waters. Ecological notes and geographical distribution for each added species are provided together with animal iconography, consisting mainly of in situ photographs, for species identification.
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12
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Fernández-Álvarez FÁ, Braid HE, Nigmatullin CM, Bolstad KSR, Haimovici M, Sánchez P, Sajikumar KK, Ragesh N, Villanueva R. Global biodiversity of the genus Ommastrephes (Ommastrephidae: Cephalopoda): an allopatric cryptic species complex. Zool J Linn Soc 2020. [DOI: 10.1093/zoolinnean/zlaa014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Cryptic speciation among morphologically homogeneous species is a phenomenon increasingly reported in cosmopolitan marine invertebrates. This situation usually leads to the discovery of new species, each of which occupies a smaller fraction of the original distributional range. The resolution of the taxonomic status of species complexes is essential because species are used as the unit of action for conservation and natural resource management politics. Before the present study, Ommastrephes bartramii was considered a monotypic cosmopolitan species with a discontinuous distribution. Here, individuals from nearly its entire distributional range were evaluated with mitochondrial DNA (cytochrome c oxidase subunit I and 16S rRNA). Four distinct species were consistently identified using four molecular species delimitation methods. These results, in combination with morphological and metabolic information from the literature, were used to resurrect three formerly synonymized names (Ommastrephes brevimanus, Ommastrephes caroli and Ommastrephes cylindraceus) and to propose revised distributional ranges for each species. In addition, diagnostic characters from the molecular sequences were incorporated in the species description. At present, only one of the four newly recognized species (Ommastrephes bartramii) is commercially exploited by fisheries in the North Pacific, but it now appears that the distributional range of this species is far smaller than previously believed, which is an essential consideration for effective fisheries management.
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Affiliation(s)
- Fernando Á Fernández-Álvarez
- Institut de Ciències del Mar (CSIC), Barcelona, Spain
- Ryan Institute and School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Heather E Braid
- AUT Lab for Cephalopod Ecology & Systematics, Institute for Applied Ecology New Zealand, School of Science, Auckland University of Technology, Private Bag, Auckland, New Zealand
| | | | - Kathrin S R Bolstad
- AUT Lab for Cephalopod Ecology & Systematics, Institute for Applied Ecology New Zealand, School of Science, Auckland University of Technology, Private Bag, Auckland, New Zealand
| | - Manuel Haimovici
- Instituto de Oceanografia, Universidade Federal do Rio Grande – FURG, Brazil
| | - Pilar Sánchez
- Institut de Ciències del Mar (CSIC), Barcelona, Spain
| | | | - Nadakkal Ragesh
- Central Marine Fisheries Research Institute (CMFRI), Kerala, India
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13
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Alessi C, Giomi F, Furnari F, Sarà G, Chemello R, Milazzo M. Ocean acidification and elevated temperature negatively affect recruitment, oxygen consumption and calcification of the reef-building Dendropoma cristatum early life stages: Evidence from a manipulative field study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 693:133476. [PMID: 31377362 DOI: 10.1016/j.scitotenv.2019.07.282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/10/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
Expected temperature rise and seawater pH decrease may affect marine organism fitness. By a transplant experiment involving air-temperature manipulation along a natural CO2 gradient, we investigated the effects of high pCO2 (~1100 μatm) and elevated temperature (up to +2 °C than ambient conditions) on the reproductive success, recruitment, growth, shell chemical composition and oxygen consumption of the early life stages of the intertidal reef-building vermetid Dendropoma cristatum. Reproductive success was predominantly affected by temperature increase, with encapsulated embryos exhibiting higher survival in control than elevated temperature conditions, which were in turn unaffected by altered seawater pH levels. Decreasing pH (alone or in combination with temperature) significantly affected the shell growth and shell chemical composition of both embryos and recruits. Elevated temperatures along with lower pH led to decreases of ~30% oxygen consumption and ~60% recruitment. Our results suggest that the early life stages of the reef-builder D. cristatum are highly sensitive to expected environmental change, with major consequences on the intertidal vermetid reefs they build and indirectly on the high biodiversity levels they support.
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Affiliation(s)
- Cinzia Alessi
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, via Archirafi 20-22, 90123 Palermo, Italy.
| | - Folco Giomi
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, via Archirafi 20-22, 90123 Palermo, Italy
| | - Francesco Furnari
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, via Archirafi 20-22, 90123 Palermo, Italy
| | - Gianluca Sarà
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, via Archirafi 20-22, 90123 Palermo, Italy
| | - Renato Chemello
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, via Archirafi 20-22, 90123 Palermo, Italy; Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa), Rome, Italy
| | - Marco Milazzo
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, via Archirafi 20-22, 90123 Palermo, Italy; Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa), Rome, Italy
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14
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Isolation of microsatellite loci for the endangered vermetid gastropod Dendropoma lebeche using Illumina MiSeq next generation sequencing technology. Mol Biol Rep 2018; 45:2775-2781. [PMID: 30187310 DOI: 10.1007/s11033-018-4346-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 08/29/2018] [Indexed: 10/28/2022]
Abstract
Dendropoma petraeum, considered the primary vermetid reef-building species in the Mediterranean, has recently been shown to be a species complex of at least four cryptic species. These species have highly restricted, non-overlapping distributions, causing concern for their conservation status. To better study the genetic diversity of these populations, we selected one of these species, Dendropoma lebeche (Templado et al. in Mediterr Mar Sci 17(1):13-31, 2016), which is restricted to the western Mediterranean, for microsatellite marker development using Illumina MiSeq. We provide an initial survey of 29 polymorphic microsatellite loci for D. lebeche. Genetic analyses identified 2-11 alleles per locus across the 30 samples examined. Observed and expected heterozygosities ranged from 0.067 to 0.800 and 0.064 to 0.770, respectively. None of the loci deviated from Hardy-Weinberg equilibrium or showed signs of being under selective pressure. Significant linkage disequilibrium was found between two loci. We also show the cross-species amplification of these microsatellite markers in the other three species of the complex, the Tyrrhenian-Sicilian lineage, D. cristatum (Biondi, 1859), the Levantine lineage, D. anguliferum (Monterosato, 1878) and Dendropoma sp. found along the Ionian-Aegean coasts, suggesting their potential utility for future phylogenetic and evolutionary studies.
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15
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La Marca EC, Catania V, Quatrini P, Milazzo M, Chemello R. Settlement performance of the Mediterranean reef-builders Dendropoma cristatum (Biondi 1859) in response to natural bacterial films. MARINE ENVIRONMENTAL RESEARCH 2018; 137:149-157. [PMID: 29571588 DOI: 10.1016/j.marenvres.2018.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 03/12/2018] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
The gastropod Dendropoma cristatum is a biogenic engineer of the central Mediterranean, forming reefs along the lower rocky intertidal fringe with a remarkable ecological role. To understand whether reef-associated biofilm cultivable bacterial and biofilm ageing may trigger the settlement of the juvenile snails, a combination of laboratory techniques and field experiments was used. Reef-associated biofilm cultivable bacteria were isolated, and a settlement-choice experiment was performed in situ on artificial biofilms composed of i) a mixture of six biofilm-forming selected isolates, ii) all the cultivable bacteria, and iii) 13-, 23-, 32-day old biofilms formed under natural conditions. Overall, settlement rate significantly differed among biofilm treatments (p < 0.0001). A significant positive correlation between biofilm ageing and juvenile D. cristatum settlement was assessed (r = 0.69 (p < 0.001), whereas the biofilm bacterial composition (relatively to the cultivable fraction) did not show any effect on the vermetid's settlement rate.
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Affiliation(s)
- Emanuela Claudia La Marca
- Department of Earth and Marine Sciences, University of Palermo, Via Archirafi 22, 90123, Palermo, Italy; Consorzio Interuniversitario per le Scienze del Mare (CoNISMa), Piazzale Flaminio 9, 00196, Roma, Italy.
| | - Valentina Catania
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed.16, 90128, Palermo, Italy.
| | - Paola Quatrini
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed.16, 90128, Palermo, Italy.
| | - Marco Milazzo
- Department of Earth and Marine Sciences, University of Palermo, Via Archirafi 22, 90123, Palermo, Italy; Consorzio Interuniversitario per le Scienze del Mare (CoNISMa), Piazzale Flaminio 9, 00196, Roma, Italy.
| | - Renato Chemello
- Department of Earth and Marine Sciences, University of Palermo, Via Archirafi 22, 90123, Palermo, Italy; Consorzio Interuniversitario per le Scienze del Mare (CoNISMa), Piazzale Flaminio 9, 00196, Roma, Italy.
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16
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López-Márquez V, Acevedo I, Manjón-Cabeza ME, García-Jiménez R, Templado J, Machordom A. Looking for morphological evidence of cryptic species in Asterina Nardo, 1834 (Echinodermata: Asteroidea). The redescription of Asterina pancerii (Gasco, 1870) and the description of two new species. INVERTEBR SYST 2018. [DOI: 10.1071/is17024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Three species of the genus Asterina are known to inhabit the Mediterranean Sea and the north-eastern Atlantic Ocean: Asterina gibbosa (Pennant, 1777), A. pancerii (Gasco, 1870) and A. phylactica Emson & Crump, 1979. Differentiation of these species has primarily been based only on subtle characters (some highly debatable), such as colour or size. Therefore, this study aimed to review the morphological data characterising members of the genus, to incorporate new characters that may clarify morphological analyses and to couple morphological data with molecular evidence of differentiation based on the analysis of partial sequences of the cytochromec oxidase subunitI (COI) and 18S rDNA (18S) genes and two anonymous nuclear loci (AgX2 and AgX5). The different lineages and cryptic species identified from the molecular analysis were then morphologically characterised, which was challenging given the limited number of diagnostic characters. Two of the five monophyletic lineages obtained molecularly (COI divergence >4%), further supported by differences in morphological characters and reproductive behaviour, are proposed as new species: Asterina martinbarriosi, sp. nov. from the Canary Islands, Spain (eastern central Atlantic Ocean) and Asterina vicentae, sp. nov. from Tarragona, north-eastern Spain (western Mediterranean Sea).
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17
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Furfaro G, Salvi D, Mancini E, Mariottini P. A multilocus view on Mediterranean aeolid nudibranchs (Mollusca): Systematics and cryptic diversity of Flabellinidae and Piseinotecidae. Mol Phylogenet Evol 2017; 118:13-22. [PMID: 28888791 DOI: 10.1016/j.ympev.2017.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 06/16/2017] [Accepted: 09/04/2017] [Indexed: 01/10/2023]
Abstract
Recent molecular studies revealed high level of endemism and numerous cryptic species within opisthobranchs, with Mediterranean taxa clearly understudied. Here we used genetic data from both mitochondrial and nuclear gene fragments as well as morphological data from taxonomically relevant characters to investigate the phylogenetic relationships and systematics of Mediterranean taxa of the Flabellinidae and Piseinotecidae families. Phylogenetic analyses based on Bayesian and Maximum-Likelihood methods indicate that Flabellinidae and Pisenotecidae taxa and species within the genera Flabellina, Calmella and Piseinotecus do not form monophyletic clades. These results are supported by our morphological analyses which allowed the re-evaluation of the triseriate radula condition in Pisenotecidae and Calmella taxa and their inclusion in the genus Flabellina as Flabellina gaditanacomb. nov. (synonym of F. confusa), Flabellina gabiniereicomb. nov. and Flabellina cavolinicomb. nov. Species delimitation and barcoding gap analyses allowed uncovering cryptic species within Flabellina gracilis (Alder and Hancock, 1844), F. trophina (Bergh, 1890), F. verrucosa (M. Sars, 1829) and F. ischitana Hirano and Thompson, 1990, the latter with an Atlantic form which is under description. This study corroborates the relevance of combining molecular and morphological data from multiple populations and species in the assessment of nudibranch diversity and classification.
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Affiliation(s)
- Giulia Furfaro
- Department of Sciences, University "Roma Tre", Viale G. Marconi 446, I-00146 Rome, Italy.
| | - Daniele Salvi
- Department of Health, Life and Environmental Sciences, University of L'Aquila, 67100 Coppito, L'Aquila, Italy; CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, 4485-661 Vairão, Portugal
| | - Emiliano Mancini
- Department of Sciences, University "Roma Tre", Viale G. Marconi 446, I-00146 Rome, Italy
| | - Paolo Mariottini
- Department of Sciences, University "Roma Tre", Viale G. Marconi 446, I-00146 Rome, Italy
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18
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Marzouk Z, Aurelle D, Said K, Chenuil A. Cryptic lineages and high population genetic structure in the exploited marine snail Hexaplex trunculus (Gastropoda: Muricidae). Biol J Linn Soc Lond 2017. [DOI: 10.1093/biolinnean/blx070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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19
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Álvarez-Campos P, Giribet G, San Martín G, Rouse GW, Riesgo A. Straightening the striped chaos: systematics and evolution of Trypanosyllis and the case of its pseudocryptic type species Trypanosyllis krohnii (Annelida, Syllidae). Zool J Linn Soc 2017. [DOI: 10.1111/zoj.12443] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Pezzolesi L, Falace A, Kaleb S, Hernandez-Kantun JJ, Cerrano C, Rindi F. Genetic and morphological variation in an ecosystem engineer, Lithophyllum byssoides (Corallinales, Rhodophyta). JOURNAL OF PHYCOLOGY 2017; 53:146-160. [PMID: 27809349 DOI: 10.1111/jpy.12488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 08/26/2016] [Indexed: 06/06/2023]
Abstract
Lithophyllum byssoides is a common coralline alga in the intertidal zone of Mediterranean coasts, where it produces biogenic concretions housing a high algal and invertebrate biodiversity. This species is an ecosystem engineer and is considered a target for conservation efforts, but designing effective conservation strategies currently is impossible due to lack of information about its population structure. The morphological and molecular variation of L. byssoides was investigated using morphoanatomy and DNA sequences (psbA and cox2,3) obtained from populations at 15 localities on the Italian and Croatian coasts. Lithophyllum byssoides exhibited a high number of haplotypes (31 psbA haplotypes and 24 cox2,3 haplotypes) in the central Mediterranean. The psbA and cox2,3 phylogenies were congruent and showed seven lineages. For most of these clades, the distribution was limited to one or a few localities, but one of them (clade 7) was widespread across the central Mediterranean, spanning the main biogeographic boundaries recognized in this area. The central Mediterranean populations formed a lineage separate from Atlantic samples; psbA pair-wise divergences suggested that recognition of Atlantic and Mediterranean L. byssoides as different species may be appropriate. The central Mediterranean haplotype patterns of L. byssoides were interpreted as resulting from past climatic events in the hydrogeological history of the Mediterranean Sea. The high haplotype diversity and the restricted spatial distribution of the seven lineages suggest that individual populations should be managed as independent units.
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Affiliation(s)
- Laura Pezzolesi
- Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Bologna, Via Sant'Alberto 163, I-48123, Ravenna, Italy
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Via Brecce Bianche, I-60131, Ancona, Italy
| | - Annalisa Falace
- Dipartimento di Scienze della Vita, Università di Trieste, Via L. Giorgieri 1, I-34127, Trieste, Italy
| | - Sara Kaleb
- Dipartimento di Scienze della Vita, Università di Trieste, Via L. Giorgieri 1, I-34127, Trieste, Italy
| | - Jazmin J Hernandez-Kantun
- Botany Department, National Museum of Natural History, Smithsonian Institution, MRC 166 PO Box 37012, Washington, District of Columbia, USA
| | - Carlo Cerrano
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Via Brecce Bianche, I-60131, Ancona, Italy
| | - Fabio Rindi
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Via Brecce Bianche, I-60131, Ancona, Italy
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21
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Rilov G. Multi-species collapses at the warm edge of a warming sea. Sci Rep 2016; 6:36897. [PMID: 27853237 PMCID: PMC5113072 DOI: 10.1038/srep36897] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 10/14/2016] [Indexed: 01/20/2023] Open
Abstract
Even during the current biodiversity crisis, reports on population collapses of highly abundant, non-harvested marine species were rare until very recently. This is starting to change, especially at the warm edge of species’ distributions where populations are more vulnerable to stress. The Levant basin is the southeastern edge of distribution of most Mediterranean species. Coastal water conditions are naturally extreme, and are fast warming, making it a potential hotspot for species collapses. Using multiple data sources, I found strong evidence for major, sustained, population collapses of two urchins, one large predatory gastropod and a reef-building gastropod. Furthermore, of 59 molluscan species once-described in the taxonomic literature as common on Levant reefs, 38 were not found in the present-day surveys, and there was a total domination of non-indigenous species in molluscan assemblages. Temperature trends indicate an exceptional warming of the coastal waters in the past three decades. Though speculative at this stage, the fast rise in SST may have helped pushing these invertebrates beyond their physiological tolerance limits leading to population collapses and possible extirpations. If so, these collapses may indicate the initiation of a multi-species range contraction at the Mediterranean southeastern edge that may spread westward with additional warming.
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Affiliation(s)
- Gil Rilov
- National Institute of Oceanography, Israel Oceanographic and Limnological Research, PO Box 8030, Haifa, 31080, Israel
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22
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Calvo M, Alda F, Oliverio M, Templado J, Machordom A. Surviving the Messinian Salinity Crisis? Divergence patterns in the genus Dendropoma (Gastropoda: Vermetidae) in the Mediterranean Sea. Mol Phylogenet Evol 2015; 91:17-26. [DOI: 10.1016/j.ympev.2015.05.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 03/03/2015] [Accepted: 05/07/2015] [Indexed: 11/16/2022]
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23
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Drivers of Population Structure of the Bottlenose Dolphin (Tursiops truncatus) in the Eastern Mediterranean Sea. Evol Biol 2015. [DOI: 10.1007/s11692-015-9309-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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24
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Recuero E, Buckley D, García-París M, Arntzen JW, Cogălniceanu D, Martínez-Solano I. Evolutionary history of Ichthyosaura alpestris (Caudata, Salamandridae) inferred from the combined analysis of nuclear and mitochondrial markers. Mol Phylogenet Evol 2014; 81:207-20. [DOI: 10.1016/j.ympev.2014.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 08/12/2014] [Accepted: 09/15/2014] [Indexed: 10/24/2022]
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25
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Golding RE, Bieler R, Rawlings TA, Collins TM. DeconstructingDendropoma: A Systematic Revision of a World-Wide Worm-Snail Group, with Descriptions of New Genera (Caenogastropoda: Vermetidae). MALACOLOGIA 2014. [DOI: 10.4002/040.057.0103] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Rastorgueff PA, Chevaldonné P, Arslan D, Verna C, Lejeusne C. Cryptic habitats and cryptic diversity: unexpected patterns of connectivity and phylogeographical breaks in a Mediterranean endemic marine cave mysid. Mol Ecol 2014; 23:2825-43. [DOI: 10.1111/mec.12776] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 04/24/2014] [Accepted: 04/25/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Pierre-Alexandre Rastorgueff
- Institut Méditerranéen de Biodiversité et d'Écologie Marine et Continentale (IMBE); UMR 7263 CNRS, IRD; Aix Marseille Université; Avignon Université; Station Marine d'Endoume, Rue de la Batterie des Lions 13007 Marseille France
| | - Pierre Chevaldonné
- Institut Méditerranéen de Biodiversité et d'Écologie Marine et Continentale (IMBE); UMR 7263 CNRS, IRD; Aix Marseille Université; Avignon Université; Station Marine d'Endoume, Rue de la Batterie des Lions 13007 Marseille France
| | - Defne Arslan
- Institut Méditerranéen de Biodiversité et d'Écologie Marine et Continentale (IMBE); UMR 7263 CNRS, IRD; Aix Marseille Université; Avignon Université; Station Marine d'Endoume, Rue de la Batterie des Lions 13007 Marseille France
| | - Caroline Verna
- Institut Méditerranéen de Biodiversité et d'Écologie Marine et Continentale (IMBE); UMR 7263 CNRS, IRD; Aix Marseille Université; Avignon Université; Station Marine d'Endoume, Rue de la Batterie des Lions 13007 Marseille France
| | - Christophe Lejeusne
- Doñana Biological Station-CSIC (EBD-CSIC); Avenida A. Vespucio 41092 Sevilla Spain
- Stazione Zoologica Anton Dohrn, Villa Comunale; 80121, Napoli Italy
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27
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Barco A, Houart R, Bonomolo G, Crocetta F, Oliverio M. Molecular data reveal cryptic lineages within the northeastern Atlantic and Mediterranean small mussel drills of theOcinebrina edwardsiicomplex (Mollusca: Gastropoda: Muricidae). Zool J Linn Soc 2013. [DOI: 10.1111/zoj.12069] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrea Barco
- Department of Biology and Biotechnology ‘C. Darwin’; University of Rome ‘La Sapienza’; Viale dell'Università 32 I-00185 Rome Italy
| | - Roland Houart
- Belgian Royal Institute of Natural Sciences; Rue Vautier, 29 B-1000 Bruxelles Belgium
| | | | - Fabio Crocetta
- Stazione Zoologica Anton Dohrn; Villa Comunale I-80121 Napoli Italy
| | - Marco Oliverio
- Department of Biology and Biotechnology ‘C. Darwin’; University of Rome ‘La Sapienza’; Viale dell'Università 32 I-00185 Rome Italy
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28
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Galil BS. Going going gone: the loss of a reef building gastropod (Mollusca: Caenogastropoda: Vermetidae) in the southeast Mediterranean Sea. ZOOLOGY IN THE MIDDLE EAST 2013. [DOI: 10.1080/09397140.2013.810885] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Sanna D, Cossu P, Dedola GL, Scarpa F, Maltagliati F, Castelli A, Franzoi P, Lai T, Cristo B, Curini-Galletti M, Francalacci P, Casu M. Mitochondrial DNA reveals genetic structuring of Pinna nobilis across the Mediterranean Sea. PLoS One 2013; 8:e67372. [PMID: 23840684 PMCID: PMC3696058 DOI: 10.1371/journal.pone.0067372] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Accepted: 05/18/2013] [Indexed: 11/18/2022] Open
Abstract
Pinna nobilis is the largest endemic Mediterranean marine bivalve. During past centuries, various human activities have promoted the regression of its populations. As a consequence of stringent standards of protection, demographic expansions are currently reported in many sites. The aim of this study was to provide the first large broad-scale insight into the genetic variability of P. nobilis in the area that encompasses the western Mediterranean, Ionian Sea, and Adriatic Sea marine ecoregions. To accomplish this objective twenty-five populations from this area were surveyed using two mitochondrial DNA markers (COI and 16S). Our dataset was then merged with those obtained in other studies for the Aegean and Tunisian populations (eastern Mediterranean), and statistical analyses (Bayesian model-based clustering, median-joining network, AMOVA, mismatch distribution, Tajima's and Fu's neutrality tests and Bayesian skyline plots) were performed. The results revealed genetic divergence among three distinguishable areas: (1) western Mediterranean and Ionian Sea; (2) Adriatic Sea; and (3) Aegean Sea and Tunisian coastal areas. From a conservational point of view, populations from the three genetically divergent groups found may be considered as different management units.
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Affiliation(s)
- Daria Sanna
- Dipartimento di Scienze della Natura e del Territorio - Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari, Sassari, Italy
| | - Piero Cossu
- Dipartimento di Scienze della Natura e del Territorio - Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari, Sassari, Italy
| | - Gian Luca Dedola
- Dipartimento di Medicina Veterinaria - Sezione di Anatomia, Università di Sassari, Sassari, Italy
| | - Fabio Scarpa
- Dipartimento di Scienze della Natura e del Territorio - Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari, Sassari, Italy
| | | | | | - Piero Franzoi
- Dipartimento di Scienze Ambientali, Informatica e Statistica, Università Cà Foscari, Venezia, Italy
| | - Tiziana Lai
- Dipartimento di Scienze della Natura e del Territorio - Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari, Sassari, Italy
| | - Benedetto Cristo
- Dipartimento di Scienze della Natura e del Territorio - Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari, Sassari, Italy
| | - Marco Curini-Galletti
- Dipartimento di Scienze della Natura e del Territorio - Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari, Sassari, Italy
| | - Paolo Francalacci
- Dipartimento di Scienze della Natura e del Territorio - Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari, Sassari, Italy
| | - Marco Casu
- Dipartimento di Scienze della Natura e del Territorio - Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari, Sassari, Italy
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30
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Sanna D, Biagi F, Alaya HB, Maltagliati F, Addis A, Romero A, De Juan J, Quignard JP, Castelli A, Franzoi P, Torricelli P, Casu M, Carcupino M, Francalacci P. Mitochondrial DNA variability of the pipefish Syngnathus abaster. JOURNAL OF FISH BIOLOGY 2013; 82:856-876. [PMID: 23464548 DOI: 10.1111/jfb.12027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 11/15/2012] [Indexed: 06/01/2023]
Abstract
This study provides data on the genetic structuring of the pipefish Syngnathus abaster in the western Mediterranean and Adriatic Seas. A total of 109 specimens were collected in brackish-water biotopes. The control region and three other regions of the mitochondrial genome were analysed. The most relevant result was the high genetic structuring found by Bayesian inference (BI), maximum likelihood (ML) and network analyses, which were consistent in showing three well-separated clusters of S. abaster populations. Furthermore, BI and ML did not support the monophyly of the taxon S. abaster. These results suggest the occurrence of a species complex in the study area, whose differentiation may have occurred since the Pleistocene. The results also show a very high genetic variability at the inter-population level, with no shared haplotypes among sites. Evolutionary forces due to the fragmented nature of the brackish-water habitats may account for the high genetic divergence found among the groups and populations. Finally, although dispersal by rafting over long distances may occasionally occur, this study suggests linear stepping-stone model of colonization to be most likely. The complexity of the results obtained suggests that further studies are needed to elucidate the phylogeny of S. abaster.
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Affiliation(s)
- D Sanna
- Dipartimento di Scienze della Natura e del Territorio - Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari, Via Francesco Muroni 25, 07100, Sassari, Italy
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31
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Pilar Cabezas M, Cabezas P, Machordom A, Guerra-García JM. Hidden diversity and cryptic speciation refute cosmopolitan distribution in Caprella penantis
(Crustacea: Amphipoda: Caprellidae). J ZOOL SYST EVOL RES 2013. [DOI: 10.1111/jzs.12010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- María Pilar Cabezas
- Laboratorio de Biología Marina; Departamento de Zoología; Facultad de Biología; Universidad de Sevilla; Seville Spain
| | | | - Annie Machordom
- Museo Nacional de Ciencias Naturales (MNCN, CSIC); Madrid Spain
| | - José M. Guerra-García
- Laboratorio de Biología Marina; Departamento de Zoología; Facultad de Biología; Universidad de Sevilla; Seville Spain
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32
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Addamo AM, Reimer JD, Taviani M, Freiwald A, Machordom A. Desmophyllum dianthus (Esper, 1794) in the scleractinian phylogeny and its intraspecific diversity. PLoS One 2012; 7:e50215. [PMID: 23209679 PMCID: PMC3509136 DOI: 10.1371/journal.pone.0050215] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 10/22/2012] [Indexed: 11/25/2022] Open
Abstract
The cosmopolitan solitary deep-water scleractinian coral Desmophyllum dianthus (Esper, 1794) was selected as a representative model species of the polyphyletic Caryophylliidae family to (1) examine phylogenetic relationships with respect to the principal Scleractinia taxa, (2) check population structure, (3) test the widespread connectivity hypothesis and (4) assess the utility of different nuclear and mitochondrial markers currently in use. To carry out these goals, DNA sequence data from nuclear (ITS and 28S) and mitochondrial (16S and COI) markers were analyzed for several coral species and for Mediterranean populations of D. dianthus. Three phylogenetic methodologies (ML, MP and BI), based on data from the four molecular markers, all supported D. dianthus as clearly belonging to the “robust” clade, in which the species Lophelia pertusa and D. dianthus not only grouped together, but also shared haplotypes for some DNA markers. Molecular results also showed shared haplotypes among D. dianthus populations distributed in regions separated by several thousands of kilometers and by clear geographic barriers. These results could reflect limited molecular and morphological taxonomic resolution rather than real widespread connectivity. Additional studies are needed in order to find molecular markers and morphological features able to disentangle the complex phylogenetic relationship in the Order Scleractinia and to differentiate isolated populations, thus avoiding the homoplasy found in some morphological characters that are still considered in the literature.
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Affiliation(s)
- Anna M Addamo
- Departmento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales Consejo Superior de Investigaciones Científicas, Madrid, Spain.
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33
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Patterns of spatial genetic structuring in the endangered limpet Patella ferruginea: implications for the conservation of a Mediterranean endemic. Genetica 2012; 139:1293-1308. [PMID: 22286933 DOI: 10.1007/s10709-012-9631-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 01/13/2012] [Indexed: 10/14/2022]
Abstract
Patella ferruginea Gmelin, 1791 is an endangered marine gastropod endemic to the Western Mediterranean. Its range is restricted to the Sardinian-Corsican region (SCR), North Africa, a few scattered sites in Southern Spain, and Sicily. Inter-simple sequence repeat (ISSR) markers and three different mitochondrial DNA (mtDNA) regions, Cytochrome c Oxidase subunit I, 12S (small-subunit ribosomal RNA gene) and 16S (large-subunit ribosomal RNA gene), were used to investigate the presence of genetic population structuring. The mtDNA sequences showed very low levels of genetic differentiation. Conversely, ISSRs showed the presence of two main genetic groups, corresponding to Spain, North Africa and Sicily and the SCR. The SCR was further split into two subgroups. The ISSR results suggest that, on a regional scale, the genetic structure of P. ferruginea is mainly determined by the restriction of gene flow by dispersal barriers. On a more local scale human harvesting may play a crucial role in population structuring by increasing the effect of genetic drift.
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Boissin E, Stöhr S, Chenuil A. Did vicariance and adaptation drive cryptic speciation and evolution of brooding in Ophioderma longicauda (Echinodermata: Ophiuroidea), a common Atlanto-Mediterranean ophiuroid? Mol Ecol 2011; 20:4737-55. [PMID: 22008223 DOI: 10.1111/j.1365-294x.2011.05309.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Over the last decade, cryptic speciation has been discovered in an increasing number of taxa. Species complexes are useful models for the understanding of speciation processes. Motivated by the discovery of brooding specimens in the common Atlanto-Mediterranean broadcast spawning brittle star, Ophioderma longicauda, a recent study revealed the occurrence of divergent mitochondrial lineages. We analysed 218 specimens from 23 locations spread over the geographic range of the species with partial Cytochrome c Oxidase subunit I (COI) sequences. A subset of this sample was also surveyed with the internal transcribed spacer of the ribosomal DNA cluster (nuclear ITS-1). Our study revealed six highly divergent mitochondrial lineages, and the ITS-1 data confirmed that they most likely represent a species complex. Geographic ranges, abundances and genetic structures are contrasted among the putative cryptic species. Lineages in which brooding specimens have been found form a monophyletic group and are restricted to the Eastern Mediterranean basin, an oligotrophic zone. A phylogeny-trait association analysis revealed a phylogenetic signal for low 'chlorophyll a' values (our proxy for oligotrophy). An ecological shift related to the hyper oligotrophy of the Eastern Mediterranean region is therefore likely to have played a role in the evolution of brooding. This study revealed that a complex mixture of vicariance, population expansion, adaptive divergence and possibly high local diversification rates resulting from brooding has shaped the evolution of this species complex. The dating analysis showed that these events probably occurred in the Pleistocene epoch.
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Affiliation(s)
- E Boissin
- CNRS UMR 6540 DIMAR, Centre d'Océanologie de Marseille, Aix-Marseille University, Station Marine d'Endoume, Rue de la batterie des Lions, Marseille 13007, France.
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35
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CABEZAS PATRICIA, MACPHERSON ENRIQUE, MACHORDOM ANNIE. Allogalathea (Decapoda: Galatheidae): a monospecific genus of squat lobster? Zool J Linn Soc 2011. [DOI: 10.1111/j.1096-3642.2010.00681.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Di Franco A, Graziano M, Franzitta G, Felline S, Chemello R, Milazzo M. Do small marinas drive habitat specific impacts? A case study from Mediterranean Sea. MARINE POLLUTION BULLETIN 2011; 62:926-933. [PMID: 21421247 DOI: 10.1016/j.marpolbul.2011.02.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 02/22/2011] [Accepted: 02/24/2011] [Indexed: 05/30/2023]
Abstract
Many human activities add new structures to the marine landscape. Despite the fact that human structures cause some inevitable impacts, surprisingly little information exists on the effects of marina on natural marine assemblages. The aim of this paper is to assess habitat-specific response of benthic sessile organisms of rocky shores in relation to the presence of a small marina. Sampling was carried out at three coastal habitats (midshore, lowshore and subtidal) by means of visual censuses adopting an after-control-impact (ACI) experimental design. It appears that the marina affects the structure and composition of benthic communities of both the midshore and the lowshore. Little effect was evident on shallow subtidal assemblage structure. The results of the present study clearly show habitat-specific responses of coastal benthic assemblages to the presence of infrastructure.
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Affiliation(s)
- Antonio Di Franco
- Dipartimento di Scienze della Terra e del Mare, Università degli Studi di Palermo, Via Archirafi 28, 90123 Palermo, Italy.
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Budd AF, Nunes FLD, Weil E, Pandolfi JM. Polymorphism in a common Atlantic reef coral (Montastraea cavernosa) and its long-term evolutionary implications. Evol Ecol 2011. [DOI: 10.1007/s10682-010-9460-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Mejri R, Arculeo M, Hassine OKB, Brutto SL. Genetic architecture of the marbled goby Pomatoschistus marmoratus (Perciformes, Gobiidae) in the Mediterranean Sea. Mol Phylogenet Evol 2010; 58:395-403. [PMID: 21167289 DOI: 10.1016/j.ympev.2010.12.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 11/26/2010] [Accepted: 12/03/2010] [Indexed: 11/19/2022]
Abstract
The marbled goby Pomatoschistus marmoratus, a species inhabiting coastal Mediterranean lagoons, has been studied by measuring its mitochondrial DNA variation. This analysis revealed a Mediterranean west vs east split and, subsequently, an eastern differentiation among the Libyan-Tunisian Gulf, the Adriatic Sea and the Aegean Sea. The high cohesion between the samples collected in the vast area of western Mediterranean contrasts with the genetic mosaic of the more sub-structured eastern Mediterranean. This western homogeneity can not yet be fully explained even if a human-mediated migratory flow, due to a maritime traffic, has been posited. The pattern in the eastern basin revealed a genetic architecture possibly due to the non-migratory habit of the gobid. Within this perspective, the role of the Mediterranean lagoon habitat should be related to how much it amplifies the effects of historical (e.g. past sea-level changes) and environmental (e.g. present-day hydrographic regime) processes as regards the genetic structure of the inhabiting species.
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Affiliation(s)
- Randa Mejri
- Unité de Recherche de Biologie, Ecologie et Parasitologie des Organismes Aquatiques, Département de Biologie, Tunis El Manar 2092, Tunisia
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Angulo A, Icochea J. Cryptic species complexes, widespread species and conservation: lessons from Amazonian frogs of theLeptodactylus marmoratusgroup (Anura: Leptodactylidae). SYST BIODIVERS 2010. [DOI: 10.1080/14772000.2010.507264] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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40
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CASU MARCO, LAI TIZIANA, SANNA DARIA, COSSU PIERO, CURINI-GALLETTI MARCO. An integrative approach to the taxonomy of the pigmented European Pseudomonocelis Meixner, 1943 (Platyhelminthes: Proseriata). Biol J Linn Soc Lond 2009. [DOI: 10.1111/j.1095-8312.2009.01316.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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