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Article: A novel integrative approach elucidates fine-scale dispersal patchiness in marine populations
Title | A novel integrative approach elucidates fine-scale dispersal patchiness in marine populations |
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Authors | |
Keywords | adult driver female fish genetic association |
Issue Date | 2019 |
Publisher | Nature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/srep/index.html |
Citation | Scientific Reports, 2019, v. 9, p. article no. 10796 How to Cite? |
Abstract | Dispersal is one of the main determining factors of population structure. In the marine habitat, well-connected populations with large numbers of reproducing individuals are common but even so population structure can exist on a small-scale. Variation in dispersal patterns between populations or over time is often associated to geographic distance or changing oceanographic barriers. Consequently, detecting structure and variation in dispersal on a fine-scale within marine populations still remains a challenge. Here we propose and use a novel approach of combining a clustering model, early-life history trait information from fish otoliths, spatial coordinates and genetic markers to detect very fine-scale dispersal patterns. We collected 1573 individuals (946 adults and 627 juveniles) of the black-faced blenny across a small-scale (2 km) coastline as well as at a larger-scale area (<50 kms). A total of 178 single nucleotide polymorphism markers were used to evaluate relatedness patterns within this well-connected population. In our clustering models we categorized SHORT-range dispersers to be potential local recruits based on their high relatedness within and low relatedness towards other spatial clusters. Local retention and/or dispersal of this potential local recruitment varied across the 2 km coastline with higher frequency of SHORT-range dispersers towards the southwest of the area for adults. An inverse pattern was found for juveniles, showing an increase of SHORT-range dispersers towards the northeast. As we rule out selective movement and mortality from one year to the next, this pattern reveals a complex but not full genetic mixing, and variability in coastal circulation is most likely the main driver of this fine-scale chaotic genetic patchiness within this otherwise homogeneous population. When focusing on the patterns within one recruitment season, we found large differences in temperatures (from approx. 17 °C to 25 °C) as well as pelagic larval duration (PLD) for juveniles from the beginning of the season and the end of the season. We were able to detect fine-scale differences in LONG-range juvenile dispersers, representing distant migrants, depending on whether they were born at the beginning of the season with a longer PLD, or at the end of the reproductive season. The ability to detect such fine-scale dispersal patchiness will aid in our understanding of the underlying mechanisms of population structuring and chaotic patchiness in a wide range of species even with high potential dispersal abilities. |
Persistent Identifier | http://hdl.handle.net/10722/274284 |
ISSN | 2023 Impact Factor: 3.8 2023 SCImago Journal Rankings: 0.900 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Schunter, C | - |
dc.contributor.author | Pascual, M | - |
dc.contributor.author | Raventos, N | - |
dc.contributor.author | Garriga, J | - |
dc.contributor.author | Garza, JC | - |
dc.contributor.author | Bartumeus, F | - |
dc.contributor.author | Macpherson , E | - |
dc.date.accessioned | 2019-08-18T14:58:43Z | - |
dc.date.available | 2019-08-18T14:58:43Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Scientific Reports, 2019, v. 9, p. article no. 10796 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | http://hdl.handle.net/10722/274284 | - |
dc.description.abstract | Dispersal is one of the main determining factors of population structure. In the marine habitat, well-connected populations with large numbers of reproducing individuals are common but even so population structure can exist on a small-scale. Variation in dispersal patterns between populations or over time is often associated to geographic distance or changing oceanographic barriers. Consequently, detecting structure and variation in dispersal on a fine-scale within marine populations still remains a challenge. Here we propose and use a novel approach of combining a clustering model, early-life history trait information from fish otoliths, spatial coordinates and genetic markers to detect very fine-scale dispersal patterns. We collected 1573 individuals (946 adults and 627 juveniles) of the black-faced blenny across a small-scale (2 km) coastline as well as at a larger-scale area (<50 kms). A total of 178 single nucleotide polymorphism markers were used to evaluate relatedness patterns within this well-connected population. In our clustering models we categorized SHORT-range dispersers to be potential local recruits based on their high relatedness within and low relatedness towards other spatial clusters. Local retention and/or dispersal of this potential local recruitment varied across the 2 km coastline with higher frequency of SHORT-range dispersers towards the southwest of the area for adults. An inverse pattern was found for juveniles, showing an increase of SHORT-range dispersers towards the northeast. As we rule out selective movement and mortality from one year to the next, this pattern reveals a complex but not full genetic mixing, and variability in coastal circulation is most likely the main driver of this fine-scale chaotic genetic patchiness within this otherwise homogeneous population. When focusing on the patterns within one recruitment season, we found large differences in temperatures (from approx. 17 °C to 25 °C) as well as pelagic larval duration (PLD) for juveniles from the beginning of the season and the end of the season. We were able to detect fine-scale differences in LONG-range juvenile dispersers, representing distant migrants, depending on whether they were born at the beginning of the season with a longer PLD, or at the end of the reproductive season. The ability to detect such fine-scale dispersal patchiness will aid in our understanding of the underlying mechanisms of population structuring and chaotic patchiness in a wide range of species even with high potential dispersal abilities. | - |
dc.language | eng | - |
dc.publisher | Nature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/srep/index.html | - |
dc.relation.ispartof | Scientific Reports | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | adult | - |
dc.subject | driver | - |
dc.subject | female | - |
dc.subject | fish | - |
dc.subject | genetic association | - |
dc.title | A novel integrative approach elucidates fine-scale dispersal patchiness in marine populations | - |
dc.type | Article | - |
dc.identifier.email | Schunter, C: schunter@hku.hk | - |
dc.identifier.authority | Schunter, C=rp02465 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1038/s41598-019-47200-w | - |
dc.identifier.pmid | 31346216 | - |
dc.identifier.pmcid | PMC6658486 | - |
dc.identifier.scopus | eid_2-s2.0-85070648089 | - |
dc.identifier.hkuros | 301971 | - |
dc.identifier.volume | 9 | - |
dc.identifier.spage | article no. 10796 | - |
dc.identifier.epage | article no. 10796 | - |
dc.identifier.isi | WOS:000477015300021 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 2045-2322 | - |