&lt;i&gt;Spinaxinus&lt;/i&gt; (Bivalvia: Thyasiroidea) from sulfide biogenerators in the Gulf of Mexico and hydrothermal vents in the Fiji Back Arc: chemosymbiosis and taxonomy

Oliver, P. Graham; Rodrigues, Clara F.; Carney, Robert S.; Duperron, Sébastien

doi:10.3989/scimar.03848.26b

Cited by 7 publications

(9 citation statements)

References 33 publications

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“…histriaensis is not unusual in Recent thyasirids. Soft periostracal spines are a defining feature of Spinaxinus Oliver & Holmes, 2006, comprising four known species (Oliver et al 2013;Oliver & Rodriguez 2017). According to Oliver (2015), shell pustules are diagnostic for Parathyasira (e.g.…”

Section: Dimensions See Tablementioning

confidence: 99%

Evolutionarily ancient deep‐water seep communities in the Eocene Tethys: examples from Buje (Croatia)

Hryniewicz,

Birgel,

Kaim

et al. 2024

Papers in Palaeontology

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We report a newly discovered hydrocarbon seep deposit from the Eocene bathyal flysch, exposed in the town of Buje in Istria, Croatia. Molecular fossils of methane‐oxidizing prokaryotes and abundant banded botryoidal cements indicate strong fluid flux at this site. We systematically describe the fauna of this and another seep deposit previously reported from Buje. The faunal assemblages are composed of eight species, these being an unidentified solemyid protobranch bivalve, the nuculid Nucula bowerbanki?, the nuculanid Nuculana? sp., the mytilid Brachidontes? amanoi sp. nov., the two thyasirids Channelaxinus dinaricus sp. nov. and Thyasira histriaensis sp. nov., the lucinid bivalve Amanocina bujensis sp. nov., and a possible provannid gastropod. The two assemblages are of low diversity (4 and 5 species, respectively), and are dominated by chemosymbiotic species whose occurrence is largely restricted to seeps. Despite their spatial and stratigraphic proximity, the two deposits share only a single species, Channelaxinus dinaricus, probably due to different fluid flux regimes at both seeps. The Buje seep assemblages are among the very few Late Cretaceous to Palaeogene chemosynthesis‐based faunal assemblages from the Tethys Ocean (the others being Late Cretaceous vent assemblages from Cyprus). From an evolutionary perspective, the Buje seep communities consist of genera with Mesozoic origins but lack Cenozoic novelties such as bathymodiolin mussels and vesicomyid clams, which are known from coeval deposits from the Pacific and dominate vents and seeps today. Thus, the Buje seep fauna support previous assertions that the Eocene Tethyan seep faunas preserved an ancient aspect, whereas evolutionary novelties arose in the Pacific.

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Section: Dimensions See Tablementioning

confidence: 99%

Evolutionarily ancient deep‐water seep communities in the Eocene Tethys: examples from Buje (Croatia)

Hryniewicz,

Birgel,

Kaim

et al. 2024

Papers in Palaeontology

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“…The family Thyasiridae contains about 130 species (WoRMS Editorial Board, 2020) that are very widespread in the world's oceans. Thyasirids were found in the northern and southern hemispheres, from the poles to the equator and from the intertidal to the maximum depths of the oceans (Filatova, 1961(Filatova, , 1968Bernard, 1979;Scarlato, 1981;Belyaev, 1989;Payne & Allen, 1991;Coan, Scott & Bernard, 2000;Okutani, 2000;Oliver & Killeen, 2002;Allen, 2008Allen, , 2015Zelaya, 2009Zelaya, , 2010Coan & Valentich-Scott, 2012;Oliver et al, 2013, Oliver, 2015, Oliver & Rodrigues, 2017. This is the most diverse family among bivalves in the deep Atlantic.…”

Section: Introductionmentioning

confidence: 99%

Three new deep-sea species of Thyasiridae (Mollusca: Bivalvia) from the abyssal plain of the northwestern Pacific Ocean and hadal depths of the Kuril-Kamchatka Trench

Kamenev¹

2020

PeerJ

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The Thyasiridae is the most species-rich family of bivalves in the abyssal and hadal zones of the northwestern Pacific Ocean. In recent years, with at least 14 thyasirid species found in that region at depths exceeding 3,000 m. Some of them are the numerically dominant species in bottom communities. However, all members in that family have not yet been identified to the species level. Based on the material collected from 1953 to 2016 by five deep-sea expeditions, three new species of Thyasiridae (Mollusca: Bivalvia) are described from the abyssal and hadal zones of the northwestern Pacific. “Axinulus” roseus sp. nov. was found in the Kuril-Kamchatka Trench at 9,000–9,583 m depth. This species has a large rhomboidal shell with strong commarginal sculpture, a well defined, long and deep lunule and escutcheon without an auricle, a ctenidium consisting of a single demibranch, extensively lobed lateral pouches, and a large prodissoconch with specific sculpture. It is one of the dominant species in terms of abundance in macrobenthic communities in the deepest basin of the Kuril-Kamchatka Trench with a population density of up to 396 ind. m−2. The species has a shell length of up to 9.0 mm and it is the largest thyasirid with a single demibranch. “Axinulus” oliveri sp. nov. was found in a vast region of the northwestern Pacific on the abyssal plain adjacent to the Kuril-Kamchatka Trench, on the abyssal slope of the Kuril Islands, and in the Kuril-Kamchatka Trench at 4,648–6,168 m depth. This species is characterized by its ovate-rhomboidal shell, a well defined, deep and long escutcheon with a distinct auricle, a ctenidium with a single demibranch, and extensively lobed lateral pouches. It is widespread in the northwestern Pacific and forms populations with a density of up to 36 ind. m−2. Scanning electron microscopic observation of the gills of “A.” roseus sp. nov. and “A.” oliveri sp. nov. revealed that these species are not chemosymbiotic. “Axinulus” roseus sp. nov. and “A.” oliveri sp. nov. are provisionally assigned to the genus Axinulus, because they differ from the type species of the genus in a number of morphological and anatomical features. Parathyasira fragilis sp. nov. was found on the abyssal plain adjacent to the Kuril-Kamchatka Trench at 5,249–5,399 m depth. This species is distinguished by its very thin, fragile, dorsoventrally elongated, rhomboidal shell with very long anterodorsal margin and a long, wide, flat lunule. The taxonomic position of the new species is discussed.

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“…from artificial substrates simulating a reduced environment (Oliver et al, 2013), based on traps experiments to understand the associate faunas (Gaudron et al, 2010). The current discussed species is the first record of Spinaxinus in whale bone falls trap.…”

Section: Remarksmentioning

confidence: 99%

“…The current discussed species is the first record of Spinaxinus in whale bone falls trap. Usually, the species related to organic falls are retrieved at surrounding sediments and, supporting the period, only 10 months of bones decomposition, that new species are considered as early colonizer (Oliver et al, 2013).…”

Section: Remarksmentioning

confidence: 99%

“…In this genus there are ten subgenera, which are placed as subcategory because of their tenuous differences compared to the type-species, Tellina flexuosa Montagu, 1803(Payne & Allen, 1991Coan et al 2000;Killeen & Oliver, 2002a;Coan & Valentich-Scott, 2012). Huber (2015) discussed the validation of these subgenera as distinct genera considering, then, that the small differences are relevant taxonomic characters, mainly for minute infaunal species (Oliver & Holmes, 2006;Taylor & Glover, 2006;Oliver et al, 2013;Huber, 2015;Astrom et al, 2017). WorMs ( 2017) is holding the subcategories as genera.…”

Section: Introductionmentioning

confidence: 99%

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Investigating the Thyasiridae Dall, 1901 (Bivalvia, Mollusca) from the Southwestern Atlantic Ocean

Costa¹

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Agradecimento especial ao meu orientador Prof. Dr. Flavio Dias Passos pela confiança depositada durante todos esses anos. Obrigada por ter dedicado o seu tempo a me ensinar um pouco sobre esse grupo incrível que é Thyasiridae e também sobre os bivalves marinhos.Obrigada pelos momentos de descontração no laboratório, pelas risadas, pelos almoços e também pelas conversas sérias necessárias. Me sinto agradecida por ter feito parte desse meu crescimento no mundo científico por isso meu singelo "Obrigada"! O presente trabalho foi realizado com apoio da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -Brasil (CAPES) -Código de Financiamento 001.À Instituição Smithsonian por ter financiado através do "Kenneth Jay Boss Fellowship in Invertebrate Zoology" pelo período de três meses em que pude ter acesso a coleção de Thyasiridae do National Museum of Natural History. Meu obrigada especial para Dr. Ellen Strong e Dr. Jerry Harasewych, que me ajudaram durante todo o processo de aplicação até meu último dia na instituição. Obrigada as pessoas que me apoiaram e fizeram meus dias melhores durante todo meu tempo em Washington, DC: Juan e Chaya por todo o apoio e amizade. E Yolanda Villacampa, Scott e Amanda, que tornaram possível todas as minhas necessidades dentro do museu. Agradeço imensamente os meus amigos do Laboratório de Malacologia da Unicamp, Alan, Ana Clara, Fabrízio, Marcel e Pedro. Jamais esquecerei as conversas, risadas, almoços e lanchinhos da tarde, que me fizeram seguir forte durante todo o período do mestrado. Não tenho palavras para agradecer o quanto sou grata por tudo que fizeram por mim e nem pela amizade construída com as melhores pessoas dessa Unicamp. Sem vocês, com certeza não chegaria e nem seria metade do que sou hoje. Aos meus amigos de longa data, Diogo, Luciano, Carol e Yohans, agradeço pela paciência, por lutarem cada batalha comigo, e por me oferecerem sempre um conselho carinhoso e abraço apertado quando precisei. Sem vocês não teria sido possível trilhar esse caminho. Vocês são as melhores pessoas que eu podia ter. Agradeço minha família, Cristiane, Salvador e Thamires e minhas avós, Maria e Joana, que são a minha fortaleza e que me permitem estar sempre forte a frente de todas as decisões e rumos que tomo. Vocês são o meu bem mais precioso. Obrigada por estarem comigo sempre e por confiar em mim. Obrigada a todos que participaram direta ou indiretamente desse momento da minha vida e que me fortaleceu para seguir. RESUMO Thyasiridae é o segundo táxon mais frequentemente encontrado em habitats marinhos considerados "hostis", como sedimentos associados a fontes hidrotermais, plataformas de petróleo, ossadas de baleia e madeira em decomposição ou àqueles circundante a vulcões. Nesses habitats, a quantidade de nutrientes disponíveis, a baixa taxa de oxigênio e o alto nível de pressão são três principais estresses ambientais que podem provocar variações morfológicas e anatômicas em bivalves. Decorrente desses fatores as espécies podem sofrer redução significativa ou perda de partes, até ...

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<i>Spinaxinus</i> (Bivalvia: Thyasiroidea) from sulfide biogenerators in the Gulf of Mexico and hydrothermal vents in the Fiji Back Arc: chemosymbiosis and taxonomy

Cited by 7 publications

References 33 publications

Evolutionarily ancient deep‐water seep communities in the Eocene Tethys: examples from Buje (Croatia)

Evolutionarily ancient deep‐water seep communities in the Eocene Tethys: examples from Buje (Croatia)

Three new deep-sea species of Thyasiridae (Mollusca: Bivalvia) from the abyssal plain of the northwestern Pacific Ocean and hadal depths of the Kuril-Kamchatka Trench

Investigating the Thyasiridae Dall, 1901 (Bivalvia, Mollusca) from the Southwestern Atlantic Ocean

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