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| Taylor, John D.; Glover, Emily A.; Williams, Suzanne T.. |
| Although species of the chemosymbiotic bivalve family Lucinidae are often diverse and abundant in shallow water habitats such as seagrass beds, new discoveries show that the family is equally speciose at slope and bathyal depths, particularly in the tropics, with records down to 2500m. New molecular analyses including species from habitats down to 2000m indicate that these cluster in four of seven recognized subfamilies: Leucosphaerinae, Myrteinae, Codakiinae, and Lucininae, with none of these comprising exclusively deep-water species. Amongst the Leucosphaerinae, Alucinoma, Epidulcina, Dulcina, and Myrtina live mainly at depths greater than 200m. Most Myrteinae inhabit water depths below 100m, including Myrtea, Notomyrtea, Gloverina, and Elliptiolucina... |
| Tipo: Text |
Palavras-chave: Adaptive radiation; Chemosymbiosis; Hydrocarbon seeps; Phylogeny. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00218/32953/31615.pdf |
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| Taylor, John D.; Glover, Emily A.; Smith, Lisa; Dyal, Patricia; Williams, Suzanne T.. |
| A new molecular phylogeny of the chemosymbiotic bivalve family Lucinidae is presented. Using sequences from the nuclear 18S and 28S rRNA genes and the mitochondrial gene cytochrome b, 105 specimens were analysed representing 87 separate species classified into 47 genera. Samples were collected from a wide range of habitats including mangroves, seagrass beds, shallow sands, offshore muds, and hydrocarbon seeps at depths ranging from the intertidal to over 2000 m. A chronogram, derived from the combined molecular tree, was calibrated using ten lucinid fossils. The trees show five well-supported clades and two single branches of Fimbria fimbriata (Linnaeus, 1758) and Monitilora ramsayi (Smith, 1885). A new classification of Lucinidae is proposed with seven... |
| Tipo: Text |
Palavras-chave: Chemosymbiosis; Classification; Fossil record; Habitats; Phylogeography. |
| Ano: 2011 |
URL: https://archimer.ifremer.fr/doc/00467/57833/60131.pdf |
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| Glover, Emily A.; Taylor, John D.. |
| A new shallow water species of the lucinid bivalve Pleurolucina is described from Curacao in the southern Caribbean Sea and compared with known species of the genus from the western Atlantic and eastern Pacific Oceans. Although confused with the Floridian species P. leucocyma, it is most similar to the eastern Pacific P. undata. As in all studied lucinids, the new species possesses symbiotic bacteria housed in the ctenidia. The shell microstructure is unusual with repeated and intercalated conchiolin layers that have sublayers of 'tulip-shaped' calcareous spherules. Predatory drillings by naticid gastropods frequently terminate at the conchiolin layers. |
| Tipo: Text |
Palavras-chave: Bacterial symbionts; Caribbean; Conchiolin layers; Defensive adaptation; Lucinidae; Pleurolucina. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00660/77163/78554.pdf |
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