Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture
Abstract Globally, tunas are among the most valuable fish stocks, but are also inherently difficult to monitor and assess. Samples of larvae of Western Atlantic bluefin tuna Thunnus thynnus (Linnaeus, 1758) from standardized annual surveys in the northern Gulf of Mexico provide a potential source of...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-20862-9 |
| _version_ | 1797984596189511680 |
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| author | Jan R. McDowell Mark Bravington Peter M. Grewe Matthew Lauretta John F. Walter Shane M. Baylis Thierry Gosselin Estrella Malca Trika Gerard Akihiro Shiroza John T. Lamkin Ellen E. Biesack Glenn Zapfe Walter Ingram Campbell Davies Clay Porch |
| author_facet | Jan R. McDowell Mark Bravington Peter M. Grewe Matthew Lauretta John F. Walter Shane M. Baylis Thierry Gosselin Estrella Malca Trika Gerard Akihiro Shiroza John T. Lamkin Ellen E. Biesack Glenn Zapfe Walter Ingram Campbell Davies Clay Porch |
| author_sort | Jan R. McDowell |
| collection | DOAJ |
| description | Abstract Globally, tunas are among the most valuable fish stocks, but are also inherently difficult to monitor and assess. Samples of larvae of Western Atlantic bluefin tuna Thunnus thynnus (Linnaeus, 1758) from standardized annual surveys in the northern Gulf of Mexico provide a potential source of “offspring” for close-kin mark-recapture (CKMR) estimates of abundance. However, the spatial patchiness and highly skewed numbers of larvae per tow suggest sampled larvae may come from a small number of parents, compromising the precision of CKMR. We used high throughput genomic profiling to study sibship within and among larval tows from the 2016 standardized Gulf-wide survey compared to targeted sampling carried out in 2017. Full- and half-siblings were found within both years, with 12% of 156 samples in 2016 and 56% of 317 samples in 2017 having at least one sibling. There were also two pairs of cross cohort half-siblings. Targeted sampling increased the number of larvae collected per sampling event but resulted in a higher proportion of siblings. The combined effective sample size across both years was about 75% of the nominal size, indicating that Gulf of Mexico larval collections could be a suitable source of juveniles for CKMR in Western Atlantic bluefin tuna. |
| first_indexed | 2024-04-11T07:05:19Z |
| format | Article |
| id | doaj.art-213c006acb5c4b8599b7f7f7630cf5ca |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T07:05:19Z |
| publishDate | 2022-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-213c006acb5c4b8599b7f7f7630cf5ca2022-12-22T04:38:25ZengNature PortfolioScientific Reports2045-23222022-11-0112111110.1038/s41598-022-20862-9Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recaptureJan R. McDowell0Mark Bravington1Peter M. Grewe2Matthew Lauretta3John F. Walter4Shane M. Baylis5Thierry Gosselin6Estrella Malca7Trika Gerard8Akihiro Shiroza9John T. Lamkin10Ellen E. Biesack11Glenn Zapfe12Walter Ingram13Campbell Davies14Clay Porch15Virginia Institute of Marine Science, William and MaryCSIRO Oceans and AtmosphereCSIRO Oceans and AtmosphereNational Oceanic Atmospheric Administration, National Marine Fisheries ServiceNational Oceanic Atmospheric Administration, National Marine Fisheries ServiceCSIRO Oceans and AtmosphereUnaffiliatedNational Oceanic Atmospheric Administration, National Marine Fisheries ServiceNational Oceanic Atmospheric Administration, National Marine Fisheries ServiceNational Oceanic Atmospheric Administration, National Marine Fisheries ServiceNational Oceanic Atmospheric Administration, National Marine Fisheries ServiceVirginia Institute of Marine Science, William and MaryNational Oceanic Atmospheric Administration, National Marine Fisheries ServiceNational Oceanic Atmospheric Administration, National Marine Fisheries ServiceCSIRO Oceans and AtmosphereNational Oceanic Atmospheric Administration, National Marine Fisheries ServiceAbstract Globally, tunas are among the most valuable fish stocks, but are also inherently difficult to monitor and assess. Samples of larvae of Western Atlantic bluefin tuna Thunnus thynnus (Linnaeus, 1758) from standardized annual surveys in the northern Gulf of Mexico provide a potential source of “offspring” for close-kin mark-recapture (CKMR) estimates of abundance. However, the spatial patchiness and highly skewed numbers of larvae per tow suggest sampled larvae may come from a small number of parents, compromising the precision of CKMR. We used high throughput genomic profiling to study sibship within and among larval tows from the 2016 standardized Gulf-wide survey compared to targeted sampling carried out in 2017. Full- and half-siblings were found within both years, with 12% of 156 samples in 2016 and 56% of 317 samples in 2017 having at least one sibling. There were also two pairs of cross cohort half-siblings. Targeted sampling increased the number of larvae collected per sampling event but resulted in a higher proportion of siblings. The combined effective sample size across both years was about 75% of the nominal size, indicating that Gulf of Mexico larval collections could be a suitable source of juveniles for CKMR in Western Atlantic bluefin tuna.https://doi.org/10.1038/s41598-022-20862-9 |
| spellingShingle | Jan R. McDowell Mark Bravington Peter M. Grewe Matthew Lauretta John F. Walter Shane M. Baylis Thierry Gosselin Estrella Malca Trika Gerard Akihiro Shiroza John T. Lamkin Ellen E. Biesack Glenn Zapfe Walter Ingram Campbell Davies Clay Porch Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture Scientific Reports |
| title | Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture |
| title_full | Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture |
| title_fullStr | Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture |
| title_full_unstemmed | Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture |
| title_short | Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture |
| title_sort | low levels of sibship encourage use of larvae in western atlantic bluefin tuna abundance estimation by close kin mark recapture |
| url | https://doi.org/10.1038/s41598-022-20862-9 |
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