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Registros recuperados: 12
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A rare and unusual new bittiine genus with two new species from the South Pacific (Cerithiidae, Gastropoda) ArchiMer
Strong, Ellen E.; Bouchet, Philippe.
A new genus, Limatium gen, n., and two new species, L. pagodula sp, n, and L. aureum sp, n. are described, found on outer slopes of barrier reefs and fringing reefs in the South Pacific. They are rare for cerithiids, which typically occur in large populations. The two new species arc represented by 108 specimens sampled over a period of 30 years, only 16 of which were collected alive. Three subadults from the Philippines and Vanuatu likely represent a third species. In addition to their rarity, Limatium species arc atypical for cerithiids in their smooth, polished, honey to golden brown shells with distinctive white fascioles extending suture to suture. The radula presents a unique morphology that does not readily suggest an affinity to any of the...
Tipo: Text Palavras-chave: Bittiinae; New genus; New species; Marine; DNA.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00494/60615/64101.pdf
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Not all spotted cats are leopards: evidence for a Hemilienardia ocellata species complex (Gastropoda: Conoidea: Raphitomidae) ArchiMer
Fedosov, Alexander E.; Stahlschmidt, Peter; Puillandre, Nicolas; Aznar-cormano, Laetitia; Bouchet, Philippe.
The small conoidean Hemilienardia ocellata is one of the easily recognizable Indo-Pacific "turrids", primarily because of its remarkable eyespot colour pattern. Morphological and molecular phylogenetic analyses revealed four species that share this "characteristic" colour pattern but demonstrate consistent differences in size and shell proportions. Three new species - Hemilienardia acinonyx sp. nov. from the Philippines, H. lynx sp. nov. from Papua New Guinea and H. pardus sp. nov. from the Society and Loyalty Islands - are described based on the results of phylogenetic analyses. Although the H. ocellata species complex clade falls in a monophyletic Hemilienardia, H. ocellata and H. acinonyx sp. nov. possess a radula with semi-enrolled or notably flattened...
Tipo: Text Palavras-chave: Integrative taxonomy; Species delimitation; Indo-Pacific; COI; 16S..
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00479/59033/61660.pdf
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Exploration of the Deep-Sea Fauna of Papua New Guinea ArchiMer
Pante, Eric; Corbari, Laure; Thubaut, Justine; Chan, Tin-yam; Mana, Ralph; Boisselier, Marie-catherine; Bouchet, Philippe; Samadi, Sarah.
Little is known of New Guinea's deep benthic communities. In fall 2010, the Museum national d'Histoire naturelle, Institut de Recherche pour le Developpement, and University of Papua New Guinea spearheaded an international three-leg cruise, BioPapua, aimed at exploring the deep waters of eastern Papua New Guinea and its satellite islands. Special attention was given to faunal assemblages associated with sunken wood and decomposing vegetation as well as seamount summits and slopes. In this article, we review the information available on the deep ecosystems of Papua New Guinea and summarize preliminary results of the BioPapua cruise.
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Ano: 2012 URL: https://archimer.ifremer.fr/doc/00161/27267/25479.pdf
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Evolution of the Toxoglossa Venom Apparatus as Inferred by Molecular Phylogeny of the Terebridae ArchiMer
Holford, Mande; Puillandre, Nicolas; Terryn, Yves; Cruaud, Corinne; Olivera, Baldomero; Bouchet, Philippe.
Toxoglossate marine gastropods, traditionally assigned to the families Conidae, Terebridae, and Turridae, are one of the most populous animal groups that use venom to capture their prey. These marine animals are generally characterized by a venom apparatus that consists of a muscular venom bulb and a tubular venom gland. The toxoglossan radula, often compared with a hypodermic needle for its use as a conduit to inject toxins into prey, is considered a major anatomical breakthrough that assisted in the successful initial radiation of these animals in the Cretaceous and early Tertiary. The pharmacological success of toxins from cone snails has made this group a star among biochemists and neuroscientists, but very little is known about toxins from the other...
Tipo: Text Palavras-chave: Life history similarities; Similar proboscis type; Morphology; Biology; Peptides; Radula.
Ano: 2009 URL: https://archimer.ifremer.fr/doc/00207/31788/30197.pdf
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Phylogeny and systematics of mitriform gastropods (Mollusca: Gastropoda: Neogastropoda) ArchiMer
Fedosov, Alexander; Puillandre, Nicolas; Kantor, Yuri; Bouchet, Philippe.
With about 800 Recent species, 'miters' are a widely distributed group of tropical and subtropical gastropods that are most diverse in the Indo-West Pacific. They include the two families Mitridae and Costellariidae, similar in shell morphology and traditionally treated as close relatives. Some genera of deep-water Ptychatractidae and Volutomitridae are close to miters in shell morphology, and the term 'mitriform gastropods' has been introduced to refer to Mitridae, Costellariidae, and this assortment of convergent forms. The present study aimed at the reconstruction of phylogenetic relationships of mitriform gastropods based on representative taxon sampling. Four genetic markers [cytochrome c oxidase subunit I (COI), 16S and 12S rRNA mitochondrial genes,...
Tipo: Text Palavras-chave: Costellariidae; Marine molluscs; Mitra; Mitridae; Ptychatractidae; Radula; Vexillum; Volutomitridae.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00476/58810/61353.pdf
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One for each ocean: revision of the Bursa granularis (Roding, 1798) species complex (Gastropoda: Tonnoidea: Bursidae) ArchiMer
Sanders, Malcolm T.; Merle, Didier; Bouchet, Philippe; Castelin, Magalie; Beu, Alan G.; Samadi, Sarah; Puillandre, Nicolas.
Bursa granularis (Roding, 1798) is a tonnoidean gastropod that is regarded as broadly distributed throughout the Indo-Pacific and tropical western Atlantic. Because of its variable shell it has received no less than thirteen names, now all synonymized under the name B. granularis. We sequenced a fragment of the cox1 gene for 82 specimens covering a large part of its distribution and most type localities. Two delimitation methods were applied, one based on genetic distance (ABGD) and one based on phylogenetic trees (GMYC). All analyses suggest that specimens identified as B. granularis comprise four distinct species: one limited to the tropical western Atlantic, another to southwestern Western Australia and two in the Indo-Pacific (from the Red Sea to the...
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Ano: 2017 URL: https://archimer.ifremer.fr/doc/00476/58800/61531.pdf
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Un nouveau copépode parasite de la cavité palléale d'un gastéropode bathyal dans le golfe de gascogne, Myzotheridion seguenziae gen. sp. nov. ArchiMer
Laubier, Lucien; Bouchet, Philippe.
A new species of parasitic Copepod from Mollusca representing the type of a new genus has been discovered in the Gulf of Biscay : Myzotheridion seguenziae gen. sp. n. This Copepod inhabits the mantle cavity of a bathyal Gastropod very common in the North of the Gulf of Biscay, between 1900 and 2250 m depth, Seguenzia carinata. The rate of parasitism, from more than 500 Gastropods, reaches as an average 7,l %. A few special morphological features have been recognised : presence of a plurilobate sucker for the female, reduction of thoracic and abdominal segments for the male. The genus Myzotheridion, closely related to the genus Endocheres, probably belongs to the family Ventriculinidae (Dichelesthioidea), but its morphological features corroborate the...
Tipo: Text Palavras-chave: Histoire Ifremer.
Ano: 1976 URL: http://archimer.ifremer.fr/doc/1976/publication-5012.pdf
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Genetic divergence and geographical variation in the deep-water Conus orbignyi complex (Mollusca: Conoidea) ArchiMer
Puillandre, Nicolas; Meyer, Christopher P.; Bouchet, Philippe; Olivera, Baldomero M..
Genetic divergence and geographical variation in the deep-water Conus orbignyi complex (Mollusca: Conoidea). - Zoologica Scripta, 40, 350-363. The cone snails (family Conidae) are a hyperdiverse lineage of venomous gastropods. Two standard markers, COI and ITS2, were used to define six genetically divergent groups within a subclade of Conidae that includes Conus orbignyi; each of these was then evaluated based on their shell morphology. We conclude that three forms, previously regarded as subspecies of C. orbignyi are distinct species, now recognized as C. orbignyi, C. elokismenos and C. coriolisi. In addition, three additional species (C. pseudorbignyi, C. joliveti and C. comatosa) belong to this clade. Some of the proposed species (e. g. C. elokismenos)...
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Ano: 2011 URL: https://archimer.ifremer.fr/doc/00138/24939/23028.pdf
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Pseudolatirus Bellardi, 1884 revisited, with the description of two new genera and five new species (Neogastropoda: Fasciolariidae) ArchiMer
Kantor, Yuri I.; Fedosov, Alexander E.; Snyder, Martin Avery; Bouchet, Philippe.
The genus Pseudolatirus Bellardi, 1884, with the Miocene type species Fusus bilineatus Hornes, 1853, has been used for 13 Miocene to Early Pleistocene fossil species and eight Recent species and has traditionally been placed in the fasciolariid subfamily Peristerniinae Tryon, 1880. Although the fossil species are apparently peristerniines, the Recent species were in their majority suspected to be most closely related to Granulifusus Kuroda & Habe, 1954 in the subfamily Fusininae Wrigley, 1927. Their close affinity was confirmed by the molecular phylogenetic analysis of Couto et al. (2016). In the molecular phylogenetic section we present a more detailed analysis of the relationships of 10 Recent Pseudolatirus-like species, erect two new fusinine...
Tipo: Text Palavras-chave: Gastropod; Fasciolariidae; Pseudolatirus; Molecular phylogeny; New genera; New species; Southwest Pacific.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00620/73240/72754.pdf
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From here and now to there and then : practical recommendations for extrapolating cetacean density surface models to novel conditions ArchiMer
Bouchet, Philippe; Miller, David Lawrence; Roberts, Jason; Mannocci, Laura; Harris, Catriona M.; Thomas, Len.
Density surface models (DSMs) are clearly established as a method of choice for the analysis of cetacean line transect survey data, and are increasingly used to inform risk assessments in remote marine areas subject to rising anthropogenic impacts (e.g. the high seas). However, despite persistent skepticism about the validity of extrapolated models, more and more DSMs are being applied well beyond the boundaries of the study regions where field sampling originally took place. This leads to potentially uncertain and error-prone model predictions that may mislead on-the-ground management interventions and undermine conservation decision-making. In addition, no consensus currently exists on the best way to define and measure extrapolation when it occurs,...
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Ano: 2019 URL: https://archimer.ifremer.fr/doc/00515/62687/67073.pdf
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Seamounts, plateaus and governance issues in the southwest Indian Ocean, with emphasis on fisheries management and marine conservation, using the Walters Shoal as a case study for implementing a protection framework ArchiMer
Marsac, Francis; Galletti, Florence; Ternon, Jean-francois; Romanov, Evgeny V.; Demarcq, Herve; Corbari, Laure; Bouchet, Philippe; Roest, Walter; Jorry, Stephan; Olu, Karine; Loncke, Lies; Roberts, Michael J.; Ménard, Frédéric.
There is a growing interest in the management of seamounts of the South Western Indian Ocean (SWIO) both in waters under national jurisdictions and in the Areas Beyond National Jurisdiction (ABNJ). On the one hand, new scientific knowledge has been gathered through various oceanographic cruises during the past decade and, on the other hand, new agreements are under consideration globally to promote conservation and sustainable use of the biodiversity in the ABNJ, where the deep sea ecosystems associated to seamounts are a growing matter of concern. SWIO seamounts have attracted interests from fishing operators since the 1960s, while mining exploration contracts have been recently granted. Seamounts are known to shelter rich, fragile and poorly resilient...
Tipo: Text Palavras-chave: International Law of the Sea; Vulnerable Marine Ecosystems; Deep-sea fisheries; Deep-sea mining; Benthic biodiversity; Saya de Malha Bank; South Indian Ocean Fisheries Agreement; Areas Beyond National Jurisdiction; Amended Nairobi Convention; Marine protected areas.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00598/71049/69362.pdf
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Too familiar to be questioned? Revisiting the Crassispira cerithina species complex (Gastropoda: Conoidea: Pseudomelatomidae) ArchiMer
Kantor, Yuri I.; Stahlschmidt, Peter; Aznar-cormano, Laetitia; Bouchet, Philippe; Puillandre, Nicolas.
Crassispira cerithina (Anton, 1838) is a common shallow water conoidean gastropod species, broadly distributed throughout the Indo-West Pacific. It has a distinctive shell morphology and has been referred to in many publications. It is also the first species of its family to have been studied from the viewpoint of toxinology. However, our molecular phylogenetic analysis based on fragments of the COI and 28 S rRNA genes reveals the existence of two closely related distinct species, one of which is described as new (C. scala n. sp.). These two species are sympatric in several regions of the Indo-Pacific-in the Philippines, Papua New Guinea, Vanuatu and New Caledonia. They can be reliably distinguished by shell morphology and thus cannot be considered truly...
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Ano: 2017 URL: https://archimer.ifremer.fr/doc/00479/59034/61658.pdf
Registros recuperados: 12
Primeira ... 1 ... Última
 

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