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| Cowart, Dominique; Halanych, Kenneth M.; Schaeffer, Stephen W.; Fisher, Charles R.. |
| Lamellibrachia vestimentiferan tubeworms form aggregations at hydrocarbon cold seeps in the deep Gulf of Mexico (GoM), creating structures that provide living space for other fauna. In the GoM, three Lamellibrachia taxa vary in morphology and depth ranges: Lamellibrachia luymesi (300–950 m), Lamellibrachia sp. 1 (950–2,604 m), and Lamellibrachia sp. 2 (1,175–3,304 m). While Lamellibrachia sp. 2 is consistently identified as a separate species, L. luymesi and sp. 1 cannot be discriminated using barcoding markers cytochrome oxidase subunit 1 (COI) and large ribosomal subunit rDNA (16S). To determine if limited gene flow was a factor in the formation of these taxa, we employed more quickly evolving markers, including mitochondrial cytochrome B (CYTB),... |
| Tipo: Text |
Palavras-chave: Deep sea; Hydrocarbon seep; Microsatellite; Population structure; Siboglinid; Vestimentiferan tubeworm. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00194/30494/29935.pdf |
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| Shimabukuro, Mauricio; Carrerette, Orlemir; Alfaro-lucas, Joan Manel; Rizzo, Alexandra Elaine; Halanych, Kenneth M.; Sumida, Paulo Yukio Gomes. |
| Whale falls are important environments contributing to biodiversity, connectivity and evolutionary novelty in deep-sea ecosystem. Notwithstanding, most of this knowledge is based in studies from NE Pacific basin. Interestingly, the only known natural whale fall on the SW Atlantic has faunal composition affinities with carcasses from other deep-ocean basins. In this carcass, annelid worms belonging to Hesionidae are abundant and species-rich, and include some shared species with NE Pacific Ocean. Here we evaluate the diversity of Hesionidae on the SW Atlantic using new information of implanted whale bones and explore whether some species have interbasin distribution or if they represent cryptic species in different basins. We described, using morphological... |
| Tipo: Text |
Palavras-chave: Deep sea; Biodiversity; Cryptic species; Biogeography; Connectivity. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00509/62081/66263.pdf |
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| Galaska, Matthew P.; Wethey, David S.; Arias, Andrés; Dubois, Stanislas; Halanych, Kenneth M.; Woodin, Sarah A.. |
| Aim Evolutionary history of natural populations can be confounded by human intervention such as the case of decorator worm species Diopatra (Onuphidae), which have a history of being transported through anthropogenic activities. Because they build tubes and act as ecosystem engineers, they can have a large impact on the overall ecosystem in which they occur. One conspicuous member, Diopatra biscayensis, which was only described in 2012, has a fragmented distribution that includes the Bay of Biscay and the Normanno‐Breton Gulf in the English Channel. This study explores the origin of these worms in the Normanno‐Breton region, which has been debated to either be the result of a historic range contraction from a relic continuous population or a more recent... |
| Tipo: Text |
Palavras-chave: Bay of Biscay; Convex Hull; Onuphidae; Phylogeography; Population genetics; RADseq. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00692/80411/83522.pdf |
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