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Boehm JT, Bovee E, Harris SE, Eddins K, Akahoho I, Foster M, Pell SK, Hickerson MJ, Amato G, DeSalle R, Waldman J. The United States dried seahorse trade: A comparison of traditional Chinese medicine and ecommerce-curio markets using molecular identification. PLoS One 2023; 18:e0291874. [PMID: 37788253 PMCID: PMC10547177 DOI: 10.1371/journal.pone.0291874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 09/07/2023] [Indexed: 10/05/2023] Open
Abstract
Tens of millions of dried seahorses (genus Hippocampus) are traded annually, and the pressure from this trade along with their life history traits (involved parental care and small migration distances and home ranges) has led to near global population declines. This and other forms of overexploitation have led to all seahorse species being listed in Appendix II under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). The signatory nations of CITES recommended a 10-cm size limit of seahorses to ensure harvested individuals have reached reproductive maturity, and have thus had the chance to produce offspring, to maintain a more sustainable global seahorse fishery. We assessed adherence to CITES recommendations using DNA barcoding and size measurements to compare two prominent U.S. dried seahorse markets: (1) traditional Chinese medicine (TCM), and (2) non-medicinal ecommerce and coastal curio (ECC). We also estimated U.S. import abundance from CITES records. Of the nine species identified among all samples (n = 532), eight were found in the TCM trade (n = 168); composed mostly (75%) of the Indo-Pacific species Hippocampus trimaculatus, and Hippocampus spinosissimus, and the Latin American Hippocampus ingens. In contrast, ECC samples (n = 344) included 5 species, primarily juvenile Indo-Pacific Hippocampus kuda (51.5%) and the western Atlantic Hippocampus zosterae (40.7). The majority of TCM samples (85.7%) met the CITES size recommendation, in contrast to 4.8% of ECC samples. These results suggest non-size discriminatory bycatch is the most likely source of imported ECC specimens. In addition, CITES records indicate that approximately 602,275 dried specimens were imported into the U.S. from 2004-2020, but the exact species composition remains unknown as many U.S. imports records list one species or Hippocampus spp. from confiscated shipments due to difficulties in morphological identification and large numbers of individuals per shipment. Molecular identification was used to identify the species composition of confiscated shipment imports containing undesignated species, and similar to TCM, found H. trimaculatus and H. spinosissimus the most abundant. By combining DNA barcoding, size comparisons, and CITES database records, these results provide an important glimpse into the two primary dried U.S. seahorse end-markets, and may further inform the conservation status of several Hippocampus species.
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Affiliation(s)
- J T Boehm
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- Department of Biology, City College of New York, New York, New York, United States of America
- Subprogram in Ecology, Evolution Biology and Behavior, The Graduate Center of the City University of New York, New York, New York, United States of America
| | - Eric Bovee
- School of Forest, Fisheries, and Geomatics Sciences, University of Florida, Gainesville, Florida, United States of America
| | - Stephen E Harris
- Subprogram in Ecology, Evolution Biology and Behavior, The Graduate Center of the City University of New York, New York, New York, United States of America
- School of Natural and Social Science, SUNY Purchase College, Purchase, New York, United States of America
| | - Kathryn Eddins
- The New School, New York, New York, United States of America
| | - Ishmael Akahoho
- Brooklyn Academy of Science and the Environment High School, Brooklyn, New York, United States of America
| | - Marcia Foster
- Brooklyn Academy of Science and the Environment High School, Brooklyn, New York, United States of America
| | - Susan K Pell
- Brooklyn Botanic Garden, Brooklyn, New York, United States of America
| | - Michael J Hickerson
- Department of Biology, City College of New York, New York, New York, United States of America
- Subprogram in Ecology, Evolution Biology and Behavior, The Graduate Center of the City University of New York, New York, New York, United States of America
- Division of Invertebrate Zoology, American Museum of Natural History, New York, New York, United States of America
| | - George Amato
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
| | - Rob DeSalle
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- Division of Invertebrate Zoology, American Museum of Natural History, New York, New York, United States of America
| | - John Waldman
- Subprogram in Ecology, Evolution Biology and Behavior, The Graduate Center of the City University of New York, New York, New York, United States of America
- Biology Department, Queens College, City University of New York, New York, United States of America
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Three mitochondrial lineages and no Atlantic-Mediterranean barrier for the bogue Boops boops across its widespread distribution. Sci Rep 2022; 12:22124. [PMID: 36543927 PMCID: PMC9772343 DOI: 10.1038/s41598-022-26651-8] [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: 08/25/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Marine species exhibiting wide distributional ranges are frequently subdivided into discrete genetic units over limited spatial scales. This is often due to specific life-history traits or oceanographic barriers that prevent gene flow. Fine-scale sampling studies revealed distinct phylogeographic patterns in the northeastern Atlantic and the Mediterranean, ranging from panmixia to noticeable population genetic structure. Here, we used mitochondrial sequence data to analyse connectivity in the bogue Boops boops throughout most of its widespread distribution. Our results identified the existence of three clades, one comprising specimens from the Azores and eastern Atlantic/Mediterranean, another with individuals from the Canary Islands, Madeira and Cape Verde archipelagos, and the third with samples from Mauritania only. One of the branches of the northern subtropical gyre (Azores Current) that drifts towards the Gulf of Cádiz promotes a closer connection between the Azores, southern Portugal and the Mediterranean B. boops populations. The Almería-Oran Front, widely recognised as an oceanographic barrier for many organisms to cross the Atlantic-Mediterranean divide, does not seem to affect the dispersal of this benthopelagic species. The southward movement of the Cape Verde Frontal Zone during the winter, combined with the relatively short duration of the pelagic larval stage of B. boops, may be potential factors for preventing the connectivity between the Atlantic oceanic archipelagos and Mauritania shaping the genetic signature of this species.
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Francisco SM, Castilho R, Lima CS, Almada F, Rodrigues F, Šanda R, Vukić J, Pappalardo AM, Ferrito V, Robalo JI. Genetic hypervariability of a Northeastern Atlantic venomous rockfish. PeerJ 2021; 9:e11730. [PMID: 34306828 PMCID: PMC8280884 DOI: 10.7717/peerj.11730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 06/15/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Understanding the interplay between climate and current and historical factors shaping genetic diversity is pivotal to infer changes in marine species range and communities' composition. A phylogeographical break between the Atlantic and the Mediterranean has been documented for several marine organisms, translating into limited dispersal between the two basins. METHODS In this study, we screened the intraspecific diversity of 150 individuals of the Madeira rockfish (Scorpaena maderensis) across its distributional range (seven sampling locations in the Atlantic and Mediterranean basins) using the mitochondrial control region and the nuclear S7 first intron. RESULTS The present work is the most comprehensive study done for this species, yielding no genetic structure across sampled locations and no detectable Atlantic-Mediterranean break in connectivity. Our results reveal deep and hyper-diverse bush-like genealogies with large numbers of singletons and very few shared haplotypes. The genetic hyper-diversity found for the Madeira rockfish is relatively uncommon in rocky coastal species, whose dispersal capability is limited by local oceanographic patterns. The effect of climate warming on the distribution of the species is discussed.
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Affiliation(s)
- Sara M. Francisco
- MARE—Marine and Environmental Sciences Centre, ISPA Instituto Universitário de Ciências Psicológicas, Sociais e da Vida, Lisbon, Portugal
| | - Rita Castilho
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Faro, Portugal
| | - Cristina S. Lima
- MARE—Marine and Environmental Sciences Centre, ISPA Instituto Universitário de Ciências Psicológicas, Sociais e da Vida, Lisbon, Portugal
| | - Frederico Almada
- MARE—Marine and Environmental Sciences Centre, ISPA Instituto Universitário de Ciências Psicológicas, Sociais e da Vida, Lisbon, Portugal
| | - Francisca Rodrigues
- MARE—Marine and Environmental Sciences Centre, ISPA Instituto Universitário de Ciências Psicológicas, Sociais e da Vida, Lisbon, Portugal
| | - Radek Šanda
- Department of Zoology, National Museum, Prague, Czeck Republic
| | - Jasna Vukić
- Faculty of Science, Department of Ecology, Charles University, Prague, Czech Republic
| | - Anna Maria Pappalardo
- Department of Biological, Geological and Environmental Sciences, Section of Animal Biology Biology ‘‘Marcello La Greca’’, University of Catania, Catania, Italy
| | - Venera Ferrito
- Department of Biological, Geological and Environmental Sciences, Section of Animal Biology Biology ‘‘Marcello La Greca’’, University of Catania, Catania, Italy
| | - Joana I. Robalo
- MARE—Marine and Environmental Sciences Centre, ISPA Instituto Universitário de Ciências Psicológicas, Sociais e da Vida, Lisbon, Portugal
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Diversity of Seahorse Species (Hippocampus spp.) in the International Aquarium Trade. DIVERSITY 2021. [DOI: 10.3390/d13050187] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Seahorses (Hippocampus spp.) are threatened as a result of habitat degradation and overfishing. They have commercial value as traditional medicine, curio objects, and pets in the aquarium industry. There are 48 valid species, 27 of which are represented in the international aquarium trade. Most species in the aquarium industry are relatively large and were described early in the history of seahorse taxonomy. In 2002, seahorses became the first marine fishes for which the international trade became regulated by CITES (Convention for the International Trade in Endangered Species of Wild Fauna and Flora), with implementation in 2004. Since then, aquaculture has been developed to improve the sustainability of the seahorse trade. This review provides analyses of the roles of wild-caught and cultured individuals in the international aquarium trade of various Hippocampus species for the period 1997–2018. For all species, trade numbers declined after 2011. The proportion of cultured seahorses in the aquarium trade increased rapidly after their listing in CITES, although the industry is still struggling to produce large numbers of young in a cost-effective way, and its economic viability is technically challenging in terms of diet and disease. Whether seahorse aquaculture can benefit wild populations will largely depend on its capacity to provide an alternative livelihood for subsistence fishers in the source countries. For most species, CITES trade records of live animals in the aquarium industry started a few years earlier than those of dead bodies in the traditional medicine trade, despite the latter being 15 times higher in number. The use of DNA analysis in the species identification of seahorses has predominantly been applied to animals in the traditional medicine market, but not to the aquarium trade. Genetic tools have already been used in the description of new species and will also help to discover new species and in various other kinds of applications.
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Comprehensive genus-wide screening of seahorse microsatellite loci identifies priority species for conservation assessment. CONSERV GENET RESOUR 2021. [DOI: 10.1007/s12686-021-01198-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lazic T, Pierri C, Cardone F, Cariani A, Colangelo P, Corriero G, Ferrari A, Marzano M, Messinetti S, Pesole G, Senczuk G, Santamaria M, Tinti F, Gristina M. Genetic structure of the long-snouted seahorse, Hippocampus guttulatus, in the Central–Western Mediterranean Sea. Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa074] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractThe seahorse Hippocampus guttulatus reaches its highest abundance in confined environments, where it has unique biological and ecological traits that suggest significant genetic differentiation among populations. In the present study, we aimed to reveal the genetic structure of this species by analysing eight microsatellite loci and a mitochondrial DNA region (cytochrome b) of eight populations from the Central–Western Mediterranean Sea, including lagoon sites. Levels of genetic diversity, as measured by the total number of alleles, number of private alleles, allelic richness and heterozygosity, ranged from low to moderate. The overall value of inbreeding was high, indicating a deficiency in heterozygotes. The haplotype network had a star-like construction, with the most common haplotype present in all populations. Data from the two molecular markers congruently displayed a similar pattern and revealed low genetic differentiation, notwithstanding predictions based on species traits. The observed genetic structure is probably the result of both historical population demographic events and current gene flow. The investigated lagoons, however, revealed a unique genetic profile, which is especially highlighted by the Taranto population. At this site, the results also showed altered values of observed/expected heterozygosity and allelic richness, a characteristic of marginal populations. Our study suggests that lagoon populations should be managed as distinct genetic units.
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Affiliation(s)
- Tamara Lazic
- Department of Biology, University of Bari, Bari, Italy
| | | | - Frine Cardone
- Department of Biology, University of Bari, Bari, Italy
| | - Alessia Cariani
- Laboratory of Genetics & Genomics of Marine Resources and Environment (GenoDREAM), Department of Biological, Geological and Environmental Sciences (BiGeA), Alma Mater Studiorum – University of Bologna, Ravenna, Italy
| | - Paolo Colangelo
- National Council of Research (CNR), Research Institute on Terrestrial Ecosystems (IRET), Montelibretti (Rome), Italy
| | | | - Alice Ferrari
- Laboratory of Genetics & Genomics of Marine Resources and Environment (GenoDREAM), Department of Biological, Geological and Environmental Sciences (BiGeA), Alma Mater Studiorum – University of Bologna, Ravenna, Italy
| | - Marinella Marzano
- National Council of Research (CNR), Institute of Biomembrane, Bioenergetics and Molecular Biotechnology (IBIOM), Bari, Italy
| | - Silvia Messinetti
- Laboratory of Genetics & Genomics of Marine Resources and Environment (GenoDREAM), Department of Biological, Geological and Environmental Sciences (BiGeA), Alma Mater Studiorum – University of Bologna, Ravenna, Italy
| | - Graziano Pesole
- National Council of Research (CNR), Institute of Biomembrane, Bioenergetics and Molecular Biotechnology (IBIOM), Bari, Italy
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Bari, Italy
| | - Gabriele Senczuk
- Department of Agricultural, Environmental and Food Sciences, University of Molise, Campobasso, Italy
| | - Monica Santamaria
- National Council of Research (CNR), Institute of Biomembrane, Bioenergetics and Molecular Biotechnology (IBIOM), Bari, Italy
| | - Fausto Tinti
- Laboratory of Genetics & Genomics of Marine Resources and Environment (GenoDREAM), Department of Biological, Geological and Environmental Sciences (BiGeA), Alma Mater Studiorum – University of Bologna, Ravenna, Italy
| | - Michele Gristina
- National Council of Research (CNR), Institute of Anthropic Impacts and Sustainability in Marine Environment (IAS), Palermo, Italy
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Deli T, Kiel C, Schubart CD. Phylogeographic and evolutionary history analyses of the warty crab Eriphia verrucosa (Decapoda, Brachyura, Eriphiidae) unveil genetic imprints of a late Pleistocene vicariant event across the Gibraltar Strait, erased by postglacial expansion and admixture among refugial lineages. BMC Evol Biol 2019; 19:105. [PMID: 31101005 PMCID: PMC6525375 DOI: 10.1186/s12862-019-1423-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 04/16/2019] [Indexed: 11/17/2022] Open
Abstract
Background The Pleistocene cyclic sea-level fluctuations are thought to have markedly affected the distribution and genetic architecture of Atlanto-Mediterranean biota. Despite the acknowledged key role played by these historical events in shaping population genetic structure of marine species, little is still known about the processes involved in shaping the spatial distribution of genetic variation within intertidal species. We intended in this study to reconstruct the phylogeography of a common and widely distributed coastal species across the East Atlantic and Mediterranean Sea (the warty crab Eriphia verrucosa), aiming to unravel potential microevolutionary processes likely involved in shaping its genetic polymorphism. For this purpose, a total of 155 specimens of E. verrucosa from 35 locations across the entire distribution range were analyzed by comparing a 453 basepairs region of the mitochondrial gene cytochrome oxidase subunit 1 (Cox1). Results Our results unveiled the prevalence of high genetic connectivity among East Atlantic and Mediterranean populations, with noticeable genetic distinctiveness of the peripheral population from the Azores. Spatio-temporal patterns of genetic diversification and demographic history allowed retrieving genetic imprints of late Pleistocene vicariant event across the Gibraltar Strait followed by subsequent postglacial expansion events for both the East Atlantic and Mediterranean regions. Integrative evidences from the outcomes of comparison of regional genetic diversification, as well as evolutionary and biogeographic histories reconstructions, support the existence of potential glacial refugia for E. verrucosa in the East Atlantic and western Mediterranean. Our results also revealed low levels of genetic variability along with recent demographic and spatial expansion events for eastern Mediterranean warty crabs, suggesting that the eastern areas within the distribution range of the species might have been recently colonized from putative glacial refugia. Conclusions These findings provide new insights into the phylogeography and evolutionary history of a common but poorly studied Atlanto-Mediterranean decapod species. Specifically, they contribute to the understanding of the impact of historical processes on shaping contemporary population genetic structure and diversity in intertidal marine species. Electronic supplementary material The online version of this article (10.1186/s12862-019-1423-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Temim Deli
- Zoology and Evolutionary Biology, University of Regensburg, D-93040, Regensburg, Germany
| | - Christina Kiel
- Zoology and Evolutionary Biology, University of Regensburg, D-93040, Regensburg, Germany
| | - Christoph D Schubart
- Zoology and Evolutionary Biology, University of Regensburg, D-93040, Regensburg, Germany.
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Woodall LC, Otero-Ferrer F, Correia M, Curtis JMR, Garrick-Maidment N, Shaw PW, Koldewey HJ. A synthesis of European seahorse taxonomy, population structure, and habitat use as a basis for assessment, monitoring and conservation. MARINE BIOLOGY 2017; 165:19. [PMID: 29238097 PMCID: PMC5717113 DOI: 10.1007/s00227-017-3274-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 11/22/2017] [Indexed: 06/07/2023]
Abstract
Accurate taxonomy, population demography, and habitat descriptors inform species threat assessments and the design of effective conservation measures. Here we combine published studies with new genetic, morphological and habitat data that were collected from seahorse populations located along the European and North African coastlines to help inform management decisions for European seahorses. This study confirms the presence of only two native seahorse species (Hippocampus guttulatus and H. hippocampus) across Europe, with sporadic occurrence of non-native seahorse species in European waters. For the two native species, our findings demonstrate that highly variable morphological characteristics, such as size and presence or number of cirri, are unreliable for distinguishing species. Both species exhibit sex dimorphism with females being significantly larger. Across its range, H. guttulatus were larger and found at higher densities in cooler waters, and individuals in the Black Sea were significantly smaller than in other populations. H. hippocampus were significantly larger in Senegal. Hippocampus guttulatus tends to have higher density populations than H. hippocampus when they occur sympatrically. Although these species are often associated with seagrass beds, data show both species inhabit a wide variety of shallow habitats and use a mixture of holdfasts. We suggest an international mosaic of protected areas focused on multiple habitat types as the first step to successful assessment, monitoring and conservation management of these Data Deficient species.
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Affiliation(s)
- Lucy C. Woodall
- Department of Zoology, University of Oxford, Oxford, UK
- Project Seahorse, Zoological Society of London, Regent’s Park, London, UK
| | - Francisco Otero-Ferrer
- Grupo en Biodiversidad y Conservación, IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Spain
| | - Miguel Correia
- Project Seahorse, Zoological Society of London, Regent’s Park, London, UK
- CCMar, Universidade do Algarve, F. C. T., Edificio 7, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Janelle M. R. Curtis
- Pacific Biological Station, Fisheries and Oceans Canada, 3190 Hammond Bay Road, Nanaimo, BC Canada
| | | | - Paul W. Shaw
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Aberystwyth, UK
| | - Heather J. Koldewey
- Project Seahorse, Zoological Society of London, Regent’s Park, London, UK
- Centre for Ecology and Conservation, University of Exeter, Penryn, UK
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9
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Curtis JMR, Santos SV, Nadeau JL, Gunn B, Bigney Wilner K, Balasubramanian H, Overington S, Lesage CM, D'entremont J, Wieckowski K. Life history and ecology of the elusive European short-snouted seahorse Hippocampus hippocampus. JOURNAL OF FISH BIOLOGY 2017; 91:1603-1622. [PMID: 29068054 DOI: 10.1111/jfb.13473] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 08/23/2017] [Indexed: 06/07/2023]
Abstract
To improve the understanding of the life history and ecology of one of Europe's most elusive fishes, the short-snouted seahorse Hippocampus hippocampus, data from wild populations in a shallow coastal lagoon in southern Portugal were analysed. The data were collected from 17 tagged seahorses on a focal-study grid as well as from >350 seahorses encountered during underwater visual surveys and a fishery-independent study using beach seines. These populations of settled juveniles and adults had a mean population density of 0·009 m-2 . During the study period (2000-2004), reproduction peaked in July and August. Juveniles recruited to the lagoon at c. 66 mm standard length (LS ) and 0·5 years of age and established small home ranges (0·8 to 18·2 m2 ). First reproduction was estimated at 100 mm and 1 year of age. Based on a fitted von Bertalanffy model, H. hippocampus grew quickly (growth coefficient K = 0·93) to a maximum theoretical size L∞ = 150 mm and have a maximum lifespan of c. 3·2 years. Courtship behaviours were consistent with the maintenance of pair bonds and males brooded multiple batches of young per year. Estimated annual reproductive output averaged 871 young (±632). Together these analyses provide the first life-history parameters for this species and indicate that H. hippocampus bears characteristics of opportunist and intermediate strategists. Such populations are predicted to exhibit large fluctuations in abundance, making them vulnerable to extended periods of poor recruitment.
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Affiliation(s)
- J M R Curtis
- Pacific Biological Station, Fisheries and Oceans Canada, 3190 Hammond Bay Road, Nanaimo, British Columbia, V9T 6N7, Canada
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
| | - S V Santos
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
| | - J L Nadeau
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
- Canadian Wildlife Service, Environment and Climate Change Canada, 351 Boulevard Saint-Joseph, Gatineau, Quebec, K1A 0H3, Canada
| | - B Gunn
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
| | - K Bigney Wilner
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
- Agriculture and Agri-Food Canada, 1341 Baseline Road, Ottawa, K1A 0C5, Canada
| | - H Balasubramanian
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
- EcoAdvisors, Inc. 1758 Henry Street, Halifax, Nova Scotia, B3H 3K6, Canada
| | - S Overington
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
| | - C-M Lesage
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
| | - J D'entremont
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
| | - K Wieckowski
- Project Seahorse, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, British Columbia, V6T 1Z4, Canada
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10
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The complete mitochondrial genome of the short snouted seahorse Hippocampus hippocampus Linnaeus 1758 (Syngnathiformes: Syngnathidae) and its phylogenetic implications. CONSERV GENET RESOUR 2017. [DOI: 10.1007/s12686-017-0930-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Stiller J, Wilson NG, Donnellan S, Rouse GW. The Leafy Seadragon, Phycodurus eques, a Flagship Species with Low But Structured Genetic Variability. J Hered 2017; 108:152-162. [PMID: 28173190 DOI: 10.1093/jhered/esw075] [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: 10/05/2016] [Accepted: 10/14/2016] [Indexed: 11/13/2022] Open
Abstract
The leafy seadragon (Phycodurus eques, Syngnathidae), is a charismatic endemic of Australia’s temperate coast. The species exhibits remarkable camouflage in its kelp and seagrass habitat. These habitats have been retreating throughout the range of the species, leading to concerns about the persistence of leafy seadragons. Despite being a popular aquarium display and a flagship for coastal conservation, little is known about leafy seadragon biology. We used 7 microsatellite markers and 2 mitochondrial DNA fragments to investigate the population structuring and genetic diversity of 71 individuals. Bayesian cluster analysis identified 2 main genetic partitions, one in Western Australia and the other in South Australia. Shallower, yet significant, differentiation of mitochondrial DNA (φST) and microsatellites (FST, F′ST, D) was found on the smaller geographic scales in South Australia. Distinct groups were supported in Encounter Bay, on both shores of Gulf St Vincent, and in Spencer Gulf. Sample sizes were too small in the eastern Great Australian Bight and in the westernmost locality to address genetic differentiation in these regions. Overall genetic diversity was moderate to low, but particularly low levels were found in the Western Australian cluster. This latter point needs confirmation at other sites in Western Australia. In South Australia, signatures of demographic changes were detected, which may have been caused by a population expansion due to post-glacial reflooding of the gulfs. The Western Australian and South Australian clusters appeared as demographically independent units. Conservation actions should focus on preserving genetic diversity at local scales and maintaining habitat connectivity.
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Affiliation(s)
- Josefin Stiller
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, USA
| | - Nerida G Wilson
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, USA
| | - Stephen Donnellan
- Western Australian Museum, Perth, Australia.,The School of Biological Sciences, University of Adelaide, Adelaide, Australia.,South Australian Museum, Adelaide, Australia
| | - Greg W Rouse
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, USA
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12
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Cisneros-Montemayor AM, West K, Boiro IS, Vincent ACJ. An assessment of West African seahorses in fisheries catch and trade. JOURNAL OF FISH BIOLOGY 2016; 88:751-759. [PMID: 26676971 DOI: 10.1111/jfb.12818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 09/16/2015] [Indexed: 06/05/2023]
Abstract
This study provides the first assessment of a heavily traded West African seahorse species, Hippocampus algiricus, and the first information on short-snouted seahorse Hippocampus hippocampus biology in Africa. A total of 219 seahorses were sampled from fisher catch in Senegal and The Gambia, with estimated height at reproductive activity for H. algiricus (161 mm) larger than mean ± S.D. catch height (150 ± 31 mm). Catch composition, height at reproductive activity and potential biases in fishery retention are discussed with regard to the current Convention on International Trade of Endangered Species (CITES) guidelines.
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Affiliation(s)
- A M Cisneros-Montemayor
- Fisheries Economics Research Unit & Project Seahorse, Fisheries Centre, The University of British Columbia, 2202 Main Mall, Vancouver, BC, V6T 1Z4 Canada
| | - K West
- Project Seahorse, Fisheries Centre, The University of British Columbia, 2202 Main Mall, Vancouver, BC, V6T 1Z4, Canada
| | - I S Boiro
- Independent Researcher, Touba Damba, Fulladu West District, Central River Division, The Gambia
| | - A C J Vincent
- Project Seahorse, Fisheries Centre, The University of British Columbia, 2202 Main Mall, Vancouver, BC, V6T 1Z4, Canada
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Otero-Ferrer F, Herrera R, López A, Socorro J, Molina L, Bouza C. First records of Hippocampus algiricus in the Canary Islands (north-east Atlantic Ocean) with an observation of hybridization with Hippocampus hippocampus. JOURNAL OF FISH BIOLOGY 2015; 87:1080-1089. [PMID: 26365616 DOI: 10.1111/jfb.12760] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 06/26/2015] [Indexed: 06/05/2023]
Abstract
Morphometric and genetic analyses confirmed the first records of the West African seahorse Hippocampus algiricus at Gran Canaria Island (north-east Atlantic Ocean), and also the first evidence of interspecific hybridization in seahorses. These results provide additional data on the distribution of H. algiricus that may help to establish future conservation strategies, and uncover a new potential sympatric scenario between H. algiricus and Hippocampus hippocampus.
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Affiliation(s)
- F Otero-Ferrer
- Grupo de Investigación en Acuicultura (GIA) and Universidad de Las Palmas de Gran Canaria (ULPGC), Taliarte, 35200 Telde, Las Palmas, Canary Islands, Spain
| | - R Herrera
- Servicio de Biodiversidad, Viceconsejería de Medio Ambiente, Consejería de Agricultura, Ganadería, Pesca y Medio Ambiente, C/Agustín Millares Carlo, 18, 35003, Las Palmas, Canary Islands, Spain
| | - A López
- Departamento de Xenética, Facultade de Veterinaria, Campus de Lugo, Universidade de Santiago de Compostela, Av. Carballo Calero s/n. 27002, Lugo, Spain
| | - J Socorro
- Grupo de Investigación en Acuicultura (GIA) and Universidad de Las Palmas de Gran Canaria (ULPGC), Taliarte, 35200 Telde, Las Palmas, Canary Islands, Spain
| | - L Molina
- Grupo de Investigación en Acuicultura (GIA) and Universidad de Las Palmas de Gran Canaria (ULPGC), Taliarte, 35200 Telde, Las Palmas, Canary Islands, Spain
| | - C Bouza
- Departamento de Xenética, Facultade de Veterinaria, Campus de Lugo, Universidade de Santiago de Compostela, Av. Carballo Calero s/n. 27002, Lugo, Spain
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Fedrizzi N, Stiassny MLJ, Boehm JT, Dougherty ER, Amato G, Mendez M. Population Genetic Structure of the Dwarf Seahorse (Hippocampus zosterae) in Florida. PLoS One 2015. [PMID: 26200110 PMCID: PMC4511636 DOI: 10.1371/journal.pone.0132308] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The dwarf seahorse (Hippocampus zosterae) is widely distributed throughout near-shore habitats of the Gulf of Mexico and is of commercial significance in Florida, where it is harvested for the aquarium and curio trades. Despite its regional importance, the genetic structure of dwarf seahorse populations remains largely unknown. As an aid to ongoing conservation efforts, we employed three commonly applied mtDNA markers (ND4, DLoop and CO1) to investigate the genetic structuring of H. zosterae in Florida using samples collected throughout its range in the state. A total of 1450 bp provided sufficient resolution to delineate four populations of dwarf seahorses, as indicated by significant fixation indices. Despite an overall significant population structure, we observed evidence of interbreeding between individuals from geographically distant sites, supporting the hypothesis that rafting serves to maintain a degree of population connectivity. All individuals collected from Pensacola belong to a single distinct subpopulation, which is highly differentiated from the rest of Floridian dwarf seahorses sampled. Our findings highlight the utility of mtDNA markers in evaluating barriers to gene flow and identifying genetically distinct populations, which are vital to the development of comprehensive conservation strategies for exploited taxa.
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Affiliation(s)
- Nathan Fedrizzi
- Department of Ecology, Evolution and Environmental Biology, Columbia University, New York, New York, United States of America
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- * E-mail:
| | - Melanie L. J. Stiassny
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- Department of Ichthyology, Division of Vertebrate Zoology, American Museum of Natural History, New York, New York, United States of America
| | - J. T. Boehm
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- Department of Ecology, Evolution and Behavior, CUNY Graduate Center, New York, New York, United States of America
| | - Eric R. Dougherty
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- Department of Environmental Science, Policy and Management, University of California, Berkeley, California, United States of America
| | - George Amato
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
| | - Martin Mendez
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- Latin America and Caribbean Program, Wildlife Conservation Society, Bronx, New York, United States of America
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Past and present drivers of population structure in a small coastal fish, the European long snouted seahorse Hippocampus guttulatus. CONSERV GENET 2015. [DOI: 10.1007/s10592-015-0728-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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López A, Vera M, Planas M, Bouza C. Conservation genetics of threatened Hippocampus guttulatus in vulnerable habitats in NW Spain: temporal and spatial stability of wild populations with flexible polygamous mating system in captivity. PLoS One 2015; 10:e0117538. [PMID: 25646777 PMCID: PMC4315495 DOI: 10.1371/journal.pone.0117538] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 12/26/2014] [Indexed: 11/19/2022] Open
Abstract
This study was focused on conservation genetics of threatened Hippocampus guttulatus on the Atlantic coast of NW Iberian Peninsula. Information about spatial structure and temporal stability of wild populations was obtained based on microsatellite markers, and used for monitoring a captive breeding program firstly initiated in this zone at the facilities of the Institute of Marine Research (Vigo, Spain). No significant major genetic structure was observed regarding the biogeographical barrier of Cape Finisterre. However, two management units under continuous gene flow are proposed based on the allelic differentiation between South-Atlantic and Cantabrian subpopulations, with small to moderate contemporary effective size based on single-sample methods. Temporal stability was observed in South-Atlantic population samples of H. guttulatus for the six-year period studied, suggesting large enough effective population size to buffer the effects of genetic drift within the time frame of three generations. Genetic analysis of wild breeders and offspring in captivity since 2009 allowed us to monitor the breeding program founded in 2006 in NW Spain for this species. Similar genetic diversity in the renewed and founder broodstock, regarding the wild population of origin, supports suitable renewal and rearing processes to maintain genetic variation in captivity. Genetic parentage proved single-brood monogamy in the wild and in captivity, but flexible short- and long-term mating system under captive conditions, from strict monogamy to polygamy within and/or among breeding seasons. Family analysis showed high reproductive success in captivity under genetic management assisted by molecular relatedness estimates to avoid inbreeding. This study provides genetic information about H. guttulatus in the wild and captivity within an uncovered geographical range for this data deficient species, to be taken into account for management and conservation purposes.
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Affiliation(s)
- Almudena López
- Department of Genetics, Faculty of Veterinary Science, Universidade de Santiago de Compostela, Campus de Lugo, Lugo, Spain
| | - Manuel Vera
- Laboratori d’Ictiologia Genètica, Departament of Biology, Faculty of Sciences, Universidad de Girona, Campus de Montilivi, Girona, Spain
| | - Miquel Planas
- Department of Ecology and Marine Resources, Instituto de Investigaciones Marinas (CSIC), Vigo, Spain
| | - Carmen Bouza
- Department of Genetics, Faculty of Veterinary Science, Universidade de Santiago de Compostela, Campus de Lugo, Lugo, Spain
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Portnoy DS, Hollenbeck CM, Belcher CN, Driggers WB, Frazier BS, Gelsleichter J, Grubbs RD, Gold JR. Contemporary population structure and post-glacial genetic demography in a migratory marine species, the blacknose shark, Carcharhinus acronotus. Mol Ecol 2014; 23:5480-95. [PMID: 25294029 DOI: 10.1111/mec.12954] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 09/26/2014] [Accepted: 09/29/2014] [Indexed: 11/30/2022]
Abstract
Patterns of population structure and historical genetic demography of blacknose sharks in the western North Atlantic Ocean were assessed using variation in nuclear-encoded microsatellites and sequences of mitochondrial (mt)DNA. Significant heterogeneity and/or inferred barriers to gene flow, based on microsatellites and/or mtDNA, revealed the occurrence of five genetic populations localized to five geographic regions: the southeastern U.S Atlantic coast, the eastern Gulf of Mexico, the western Gulf of Mexico, Bay of Campeche in the southern Gulf of Mexico and the Bahamas. Pairwise estimates of genetic divergence between sharks in the Bahamas and those in all other localities were more than an order of magnitude higher than between pairwise comparisons involving the other localities. Demographic modelling indicated that sharks in all five regions diverged after the last glacial maximum and, except for the Bahamas, experienced post-glacial, population expansion. The patterns of genetic variation also suggest that the southern Gulf of Mexico may have served as a glacial refuge and source for the expansion. Results of the study demonstrate that barriers to gene flow and historical genetic demography contributed to contemporary patterns of population structure in a coastal migratory species living in an otherwise continuous marine habitat. The results also indicate that for many marine species, failure to properly characterize barriers in terms of levels of contemporary gene flow could in part be due to inferences based solely on equilibrium assumptions. This could lead to erroneous conclusions regarding levels of connectivity in species of conservation concern.
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Affiliation(s)
- D S Portnoy
- Marine Genomics Laboratory, Department of Life Sciences, Harte Research Institute, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX, 78412, USA
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Zhang Y, Pham NK, Zhang H, Lin J, Lin Q. Genetic variations in two seahorse species (Hippocampus mohnikei and Hippocampus trimaculatus): evidence for middle Pleistocene population expansion. PLoS One 2014; 9:e105494. [PMID: 25144384 PMCID: PMC4140773 DOI: 10.1371/journal.pone.0105494] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 07/24/2014] [Indexed: 11/18/2022] Open
Abstract
Population genetic of seahorses is confidently influenced by their species-specific ecological requirements and life-history traits. In the present study, partial sequences of mitochondrial cytochrome b (cytb) and control region (CR) were obtained from 50 Hippocampus mohnikei and 92 H. trimaculatus from four zoogeographical zones. A total of 780 base pairs of cytb gene were sequenced to characterize mitochondrial DNA (mtDNA) diversity. The mtDNA marker revealed high haplotype diversity, low nucleotide diversity, and a lack of population structure across both populations of H. mohnikei and H. trimaculatus. A neighbour-joining (NJ) tree of cytb gene sequences showed that H. mohnikei haplotypes formed one cluster. A maximum likelihood (ML) tree of cytb gene sequences showed that H. trimaculatus belonged to one lineage. The star-like pattern median-joining network of cytb and CR markers indicated a previous demographic expansion of H. mohnikei and H. trimaculatus. The cytb and CR data sets exhibited a unimodal mismatch distribution, which may have resulted from population expansion. Mismatch analysis suggested that the expansion was initiated about 276,000 years ago for H. mohnikei and about 230,000 years ago for H. trimaculatus during the middle Pleistocene period. This study indicates a possible signature of genetic variation and population expansion in two seahorses under complex marine environments.
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Affiliation(s)
- Yanhong Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Nancy Kim Pham
- Vero Beach Marine Laboratory, Florida Institute of Technology, Vero Beach, Florida, United States of America
| | - Huixian Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Junda Lin
- Vero Beach Marine Laboratory, Florida Institute of Technology, Vero Beach, Florida, United States of America
| | - Qiang Lin
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- * E-mail:
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Luzzatto DC, Estalles ML, Díaz de Astarloa JM. Rafting seahorses: the presence of juvenile Hippocampus patagonicus in floating debris. JOURNAL OF FISH BIOLOGY 2013; 83:677-681. [PMID: 23991883 DOI: 10.1111/jfb.12196] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 06/13/2013] [Indexed: 06/02/2023]
Abstract
A total of 477 juvenile Hippocampus patagonicus recorded in 80 sampling events were detected rafting on the surface during high tide at San Antonio Bay, northern Patagonia, Argentina. If rafting juveniles drift long distances beyond their original populations, they have the potential to form new populations, which may explain the wide distribution of H. patagonicus.
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Affiliation(s)
- D C Luzzatto
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Biología Marina y Pesquera Almirante Storni, Río Negro, Argentina.
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Authenticating the use of dried seahorses in the traditional Chinese medicine market in Taiwan using molecular forensics. J Food Drug Anal 2013. [DOI: 10.1016/j.jfda.2013.07.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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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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Ahnesjö I, Craig JF. The biology of Syngnathidae: pipefishes, seadragons and seahorses. JOURNAL OF FISH BIOLOGY 2011; 78:1597-1602. [PMID: 21651518 DOI: 10.1111/j.1095-8649.2011.03008.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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