Résultats des campagnes scientifiques accomplies sur son yacht par Albert Ier, prince souverain de Monaco ...

Milne‐Edwards, Alphonse; Bouvier, Eugène Louis

doi:10.5962/bhl.title.2169

Cited by 14 publications

(21 citation statements)

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“…deeper water at lower latitudes). Besides Notoplites bilobus, two other Notoplites species are known to be present in the Azores: N. clausus ) (see below) as well as N. saojorgensis Berning, 2013, which was newly described based on material erroneously reported as N. marsupiatus (Jullien, 1882) by Calvet (1931).…”

Section: Remarksmentioning

confidence: 99%

“…Until the types of H. multispinata have been analysed based on SEM images this decision has to be rejected owing to the great distance between localities, and we here regard Hemicyclopora canalifera as a distinct entity. The species has also been cited from other North Atlantic regions (Calvet, 1931: Bay of Biscay, Norway, Spitsbergen), which most probably represent distinct species as well.…”

Section: Remarksmentioning

confidence: 99%

“…The first scientific expedition to explore the organisms of the deep sea, the voyage on the British HMS 'Challenger' from 1872-1876, was also the first cruise upon which bryozoans were described from around the central North Atlantic archipelago of the Azores (Busk, 1881aWaters, 1888). While a mere 21 species were recorded then, this pioneering expedition was quickly followed up by a series of French cruises to the archipelago in the late 19th and early 20th century, upon which the majority of the ∼200 known Azorean bryozoan species were described (Jullien & Calvet, 1903;Calvet, 1906Calvet, , 1907Calvet, , 1931. Another set of scientific expeditions to the Azores took place during the second half of the 20th century (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Revision of the Cheilostomatida (Bryozoa) collected during the HMS ‘Challenger’ Expedition (1872–1876) in the central North Atlantic

Berning

Jones

2023

J. Mar. Biol. Ass.

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Of the 21 species recorded from the greater Azores region during the HMS ‘Challenger’ Expedition, 12 were newly introduced during the late 19th century. The respective types of these species are fixed, and eight species are redescribed based on scanning electron microscope analysis (Notoplites bilobus, Raxifabia minuta, Hemicyclopora canalifera, Smittoidea oratavensis comb. nov., Buskea ovalis comb. nov., Buskea fayalensis comb. nov., Celleporina ansata comb. nov. and Reteporella atlantica comb. nov.). Another four species are merely dealt with shortly either because the material is insufficiently preserved for a thorough revision (Columnella gracilis, Carbasea pedunculata), or because the species have recently been revised already (Notoplites clausus, Microporella hastigera). Moreover, two Azorean species that were introduced by later workers are synonymized with ‘Challenger’ species: S. oratavensis is considered a senior synonym of Smittia ensifera, and Lekythopora laciniosa is synonymized with C. ansata.

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Section: Remarksmentioning

confidence: 99%

Section: Remarksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Revision of the Cheilostomatida (Bryozoa) collected during the HMS ‘Challenger’ Expedition (1872–1876) in the central North Atlantic

Berning

Jones

2023

J. Mar. Biol. Ass.

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“…4). Rhabdopleura normani apparently has the widest distribution, having been collected throughout the North Atlantic basin, including the Norwegian Sea (Sars 1874;Hincks 1880;Nordgaard 1900;Burdon-Jones 1954;Stebbing 1970b), North Sea (Norman 1869;Allman 1869;Hincks 1880;Lankester 1882Lankester , 1884Herdman 1892;Schepotieff 1904;Schepotieff 1907;Grieg 1914;Burdon-Jones 1954;Stebbing 1970b), Barents Sea (Kluge 1948), Greenland Sea (Kluge 1948), Labrador Sea (Norman 1903;Burdon-Jones 1954), Bay of Biscay (Köehler 1896;Burdon-Jones 1954), Celtic Sea (Stebbing 1970b: table 2), Gulf of Lion (Laubier 1964;Stebbing 1970b: table 2), the Azores (Jullien 1890, Jullien andCalvet 1903;Burdon-Jones 1954;Stebbing 1970b) and Bermuda (Barnes 1977;Dilly 1985). It is moreover present in the South Atlantic (including the Argentine Sea) (Lopez-Gappa 1987), Fiji (Dilly and Ryland 1985) and Antarctic Ocean (Johnston 1937;Lopez-Gappa 1987).…”

Section: Zoogeography Of Living Rhabdopleuridsmentioning

confidence: 99%

The zoogeography of extant rhabdopleurid hemichordates (Pterobranchia : Graptolithina), with a new species from the Mediterranean Sea

Beli

Aglieri

Strano

et al. 2018

Invert. Systematics

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The early origin and evolutionary radiation of graptolites (Hemichordata:Pterobranchia) is a story told almost entirely in the fossil record, but for four extant species of the genus Rhabdopleura Allman, 1869. Here we report the discovery of a fifth species, Rhabdopleura recondita, sp. nov., at a depth range of 2–70m from the Adriatic and Ionian Seas, always associated with bryozoans in coralligenous habitats. This is the first pterobranch record in Italian waters, and the second in the Mediterranean Sea. The new species is characterised by: (1) tubaria with smooth creeping tubes adherent to the inside of empty bryozoan zooecia; (2) erect outer tubes with a graptolite, fusellar-like organisation; and (3) zooids that extend from a black stolon, which is free from the creeping tube. Each of the paired feeding arms has two rows of tentacles that do not extend to the arm tip. The distal ends of the arms, the collar and the cephalic shield are replete with black granules. Phylogenetic analyses of individual and concatenated gene sequences of mitochondrial 16S rDNA and nuclear 18S rDNA support the validity of R. recondita as a new species. Finally, we discuss the global biogeographic and habitat distributions of the extant Rhabdopleura representatives. http://zoobank.org/urn:lsid:zoobank.org:pub:82C6A51E-F8F4-44AF-AD8F-16873BE80D03

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“…For G a path on four vertices and q = 5, any subset of the marked vertices is a squid in G K q with body w. On the right is a grimalditeuthis bonplandi squid without tentacles[1].…”

mentioning

confidence: 99%

Tverberg’s Theorem and Graph Coloring

Engström

Norén

2013

Discrete Comput Geom

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The topological Tverberg theorem has been generalized in several directions by setting extra restrictions on the Tverberg partitions.Restricted Tverberg partitions, defined by the idea that certain points cannot be in the same part, are encoded with graphs. When two points are adjacent in the graph, they are not in the same part. If the restrictions are too harsh, then the topological Tverberg theorem fails. The colored Tverberg theorem corresponds to graphs constructed as disjoint unions of small complete graphs. Hell studied the case of paths and cycles.In graph theory these partitions are usually viewed as graph colorings. As explored by Aharoni, Haxell, Meshulam and others there are fundamental connections between several notions of graph colorings and topological combinatorics.For ordinary graph colorings it is enough to require that the number of colors q satisfy q > ∆, where ∆ is the maximal degree of the graph. It was proven by the first author using equivariant topology that if q > ∆ 2 then the topological Tverberg theorem still works. It is conjectured that q > K∆ is also enough for some constant K, and in this paper we prove a fixed-parameter version of that conjecture.The required topological connectivity results are proven with shellability, which also strengthens some previous partial results where the topological connectivity was proven with the nerve lemma.

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Résultats des campagnes scientifiques accomplies sur son yacht par Albert Ier, prince souverain de Monaco ...

Cited by 14 publications

References 1 publication

Revision of the Cheilostomatida (Bryozoa) collected during the HMS ‘Challenger’ Expedition (1872–1876) in the central North Atlantic

Revision of the Cheilostomatida (Bryozoa) collected during the HMS ‘Challenger’ Expedition (1872–1876) in the central North Atlantic

The zoogeography of extant rhabdopleurid hemichordates (Pterobranchia : Graptolithina), with a new species from the Mediterranean Sea

Tverberg’s Theorem and Graph Coloring

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