Genetic differentiation and phylogeography of Mediterranean-North Eastern Atlantic blue shark (Prionace glauca, L. 1758) using mitochondrial DNA: panmixia or complex stock structure?
Background The blue shark (Prionace glauca, Linnaeus 1758) is one of the most abundant epipelagic shark inhabiting all the oceans except the poles, including the Mediterranean Sea, but its genetic structure has not been confirmed at basin and interoceanic distances. Past tagging programs in the Atla...
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
PeerJ Inc.
2017-12-01
|
| Series: | PeerJ |
| Subjects: | |
| Online Access: | https://peerj.com/articles/4112.pdf |
| _version_ | 1797420290239627264 |
|---|---|
| author | Agostino Leone Ilenia Urso Dimitrios Damalas Jann Martinsohn Antonella Zanzi Stefano Mariani Emilio Sperone Primo Micarelli Fulvio Garibaldi Persefoni Megalofonou Luca Bargelloni Rafaella Franch David Macias Paulo Prodöhl Séan Fitzpatrick Marco Stagioni Fausto Tinti Alessia Cariani |
| author_facet | Agostino Leone Ilenia Urso Dimitrios Damalas Jann Martinsohn Antonella Zanzi Stefano Mariani Emilio Sperone Primo Micarelli Fulvio Garibaldi Persefoni Megalofonou Luca Bargelloni Rafaella Franch David Macias Paulo Prodöhl Séan Fitzpatrick Marco Stagioni Fausto Tinti Alessia Cariani |
| author_sort | Agostino Leone |
| collection | DOAJ |
| description | Background The blue shark (Prionace glauca, Linnaeus 1758) is one of the most abundant epipelagic shark inhabiting all the oceans except the poles, including the Mediterranean Sea, but its genetic structure has not been confirmed at basin and interoceanic distances. Past tagging programs in the Atlantic Ocean failed to find evidence of migration of blue sharks between the Mediterranean and the adjacent Atlantic, despite the extreme vagility of the species. Although the high rate of by-catch in the Mediterranean basin, to date no genetic study on Mediterranean blue shark was carried out, which constitutes a significant knowledge gap, considering that this population is classified as “Critically Endangered”, unlike its open-ocean counterpart. Methods Blue shark phylogeography and demography in the Mediterranean Sea and North-Eastern Atlantic Ocean were inferred using two mitochondrial genes (Cytb and control region) amplified from 207 and 170 individuals respectively, collected from six localities across the Mediterranean and two from the North-Eastern Atlantic. Results Although no obvious pattern of geographical differentiation was apparent from the haplotype network, Φst analyses indicated significant genetic structure among four geographical groups. Demographic analyses suggest that these populations have experienced a constant population expansion in the last 0.4–0.1 million of years. Discussion The weak, but significant, differences in Mediterranean and adjacent North-eastern Atlantic blue sharks revealed a complex phylogeographic structure, which appears to reject the assumption of panmixia across the study area, but also supports a certain degree of population connectivity across the Strait of Gibraltar, despite the lack of evidence of migratory movements observed by tagging data. Analyses of spatial genetic structure in relation to sex-ratio and size could indicate some level of sex/stage biased migratory behaviour. |
| first_indexed | 2024-03-09T06:59:28Z |
| format | Article |
| id | doaj.art-c67a7fc476bf4e478f648ab67dcb250f |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T06:59:28Z |
| publishDate | 2017-12-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
| series | PeerJ |
| spelling | doaj.art-c67a7fc476bf4e478f648ab67dcb250f2023-12-03T09:55:59ZengPeerJ Inc.PeerJ2167-83592017-12-015e411210.7717/peerj.4112Genetic differentiation and phylogeography of Mediterranean-North Eastern Atlantic blue shark (Prionace glauca, L. 1758) using mitochondrial DNA: panmixia or complex stock structure?Agostino Leone0Ilenia Urso1Dimitrios Damalas2Jann Martinsohn3Antonella Zanzi4Stefano Mariani5Emilio Sperone6Primo Micarelli7Fulvio Garibaldi8Persefoni Megalofonou9Luca Bargelloni10Rafaella Franch11David Macias12Paulo Prodöhl13Séan Fitzpatrick14Marco Stagioni15Fausto Tinti16Alessia Cariani17Department of Biological, Geological and Environmental Sciences (BiGeA), Laboratory of Genetics & Genomics of Marine Resources and Environment (GenoDREAM), University of Bologna, Ravenna, ItalyDepartment of Biological, Geological and Environmental Sciences (BiGeA), Laboratory of Genetics & Genomics of Marine Resources and Environment (GenoDREAM), University of Bologna, Ravenna, ItalyJoint Research Centre (JRC), Directorate D-Sustainable Resources, Unit D2-Water and Marine Resources, European Commission, Ispra, ItalyJoint Research Centre (JRC), Directorate D-Sustainable Resources, Unit D2-Water and Marine Resources, European Commission, Ispra, ItalyJoint Research Centre (JRC), Directorate D-Sustainable Resources, Unit D2-Water and Marine Resources, European Commission, Ispra, ItalySchool of Environment & Life Sciences, University of Salford, Salford, Greater Manchester, United KingdomDepartment of Biology, Ecology and Earth Science (DiBEST), University of Calabria, Arcavacata di Rende, ItalySharks Research Center, Aquarium Mondo Marino, Massa Marittima, ItalyDepartment of Earth, Environment and Life Sciences, University of Genova, Genova, ItalyDepartment of Biology, National and Kapodistrian University of Athens, Ilissia, GreeceDepartment of Comparative Biomedicine and Food Science, University of Padova, Legnaro, ItalyDepartment of Comparative Biomedicine and Food Science, University of Padova, Legnaro, ItalyCentro Oceanográfico de Málaga, Instituto Español de Oceanografía, Málaga, SpainSchool of Biological Sciences, Queen’s University, Institute for Global Food Security, Belfast, United KingdomSchool of Biological Sciences, Queen’s University, Institute for Global Food Security, Belfast, United KingdomDepartment of Biological, Geological and Environmental Sciences, Marine Biology and Fisheries Laboratory, University of Bologna, Fano, ItalyDepartment of Biological, Geological and Environmental Sciences (BiGeA), Laboratory of Genetics & Genomics of Marine Resources and Environment (GenoDREAM), University of Bologna, Ravenna, ItalyDepartment of Biological, Geological and Environmental Sciences (BiGeA), Laboratory of Genetics & Genomics of Marine Resources and Environment (GenoDREAM), University of Bologna, Ravenna, ItalyBackground The blue shark (Prionace glauca, Linnaeus 1758) is one of the most abundant epipelagic shark inhabiting all the oceans except the poles, including the Mediterranean Sea, but its genetic structure has not been confirmed at basin and interoceanic distances. Past tagging programs in the Atlantic Ocean failed to find evidence of migration of blue sharks between the Mediterranean and the adjacent Atlantic, despite the extreme vagility of the species. Although the high rate of by-catch in the Mediterranean basin, to date no genetic study on Mediterranean blue shark was carried out, which constitutes a significant knowledge gap, considering that this population is classified as “Critically Endangered”, unlike its open-ocean counterpart. Methods Blue shark phylogeography and demography in the Mediterranean Sea and North-Eastern Atlantic Ocean were inferred using two mitochondrial genes (Cytb and control region) amplified from 207 and 170 individuals respectively, collected from six localities across the Mediterranean and two from the North-Eastern Atlantic. Results Although no obvious pattern of geographical differentiation was apparent from the haplotype network, Φst analyses indicated significant genetic structure among four geographical groups. Demographic analyses suggest that these populations have experienced a constant population expansion in the last 0.4–0.1 million of years. Discussion The weak, but significant, differences in Mediterranean and adjacent North-eastern Atlantic blue sharks revealed a complex phylogeographic structure, which appears to reject the assumption of panmixia across the study area, but also supports a certain degree of population connectivity across the Strait of Gibraltar, despite the lack of evidence of migratory movements observed by tagging data. Analyses of spatial genetic structure in relation to sex-ratio and size could indicate some level of sex/stage biased migratory behaviour.https://peerj.com/articles/4112.pdfmtDNAPopulation expansionBlue sharkPhylogeographyGeographical breaksMediterranean stocks |
| spellingShingle | Agostino Leone Ilenia Urso Dimitrios Damalas Jann Martinsohn Antonella Zanzi Stefano Mariani Emilio Sperone Primo Micarelli Fulvio Garibaldi Persefoni Megalofonou Luca Bargelloni Rafaella Franch David Macias Paulo Prodöhl Séan Fitzpatrick Marco Stagioni Fausto Tinti Alessia Cariani Genetic differentiation and phylogeography of Mediterranean-North Eastern Atlantic blue shark (Prionace glauca, L. 1758) using mitochondrial DNA: panmixia or complex stock structure? PeerJ mtDNA Population expansion Blue shark Phylogeography Geographical breaks Mediterranean stocks |
| title | Genetic differentiation and phylogeography of Mediterranean-North Eastern Atlantic blue shark (Prionace glauca, L. 1758) using mitochondrial DNA: panmixia or complex stock structure? |
| title_full | Genetic differentiation and phylogeography of Mediterranean-North Eastern Atlantic blue shark (Prionace glauca, L. 1758) using mitochondrial DNA: panmixia or complex stock structure? |
| title_fullStr | Genetic differentiation and phylogeography of Mediterranean-North Eastern Atlantic blue shark (Prionace glauca, L. 1758) using mitochondrial DNA: panmixia or complex stock structure? |
| title_full_unstemmed | Genetic differentiation and phylogeography of Mediterranean-North Eastern Atlantic blue shark (Prionace glauca, L. 1758) using mitochondrial DNA: panmixia or complex stock structure? |
| title_short | Genetic differentiation and phylogeography of Mediterranean-North Eastern Atlantic blue shark (Prionace glauca, L. 1758) using mitochondrial DNA: panmixia or complex stock structure? |
| title_sort | genetic differentiation and phylogeography of mediterranean north eastern atlantic blue shark prionace glauca l 1758 using mitochondrial dna panmixia or complex stock structure |
| topic | mtDNA Population expansion Blue shark Phylogeography Geographical breaks Mediterranean stocks |
| url | https://peerj.com/articles/4112.pdf |
| work_keys_str_mv | AT agostinoleone geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT ileniaurso geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT dimitriosdamalas geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT jannmartinsohn geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT antonellazanzi geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT stefanomariani geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT emiliosperone geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT primomicarelli geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT fulviogaribaldi geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT persefonimegalofonou geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT lucabargelloni geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT rafaellafranch geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT davidmacias geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT pauloprodohl geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT seanfitzpatrick geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT marcostagioni geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT faustotinti geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure AT alessiacariani geneticdifferentiationandphylogeographyofmediterraneannortheasternatlanticbluesharkprionaceglaucal1758usingmitochondrialdnapanmixiaorcomplexstockstructure |