A new genus and species of marine crayfish, Palibythus magnificus, and new records of Palinurellus (Decapoda : Palinuridae) from the Pacific Ocean

1990 ◽  
Vol 4 (4) ◽  
pp. 685 ◽  
Author(s):  
PJF Davie
Keyword(s):  
Pacific Ocean ◽  
Deep Water ◽  
New Genus ◽  
New Records ◽  
Solomon Islands ◽  
New Genus And Species ◽  
The Pacific ◽  
Western Samoa ◽  
The Pacific Ocean ◽  
First Time

A new genus and species of marine crayfish, Palibythus magnificus, is described from deep water off Western Samoa. Palibythus is placed in the Palinuridae, among the 'Stridentes' group of genera, because of the well-developed stridulatory organ. It differs from all other known genera, except Palinurellus, by the flat triangular rostrum and the narrow thoracic sternum; Palinurellus, however, lacks a stridulatory organ. The relationships of Palinurellus are discussed and the Synaxidae is replaced in synonymy with the Palinuridae. Palinurellus wieneckii is recorded from New Guinea and Solomon Islands waters for the first time.

A new pleurodiran turtle from the Jagua Formation (Oxfordian) of western Cuba

2001 ◽  
Vol 75 (4) ◽  
pp. 860-869 ◽  
Author(s):  
M. S. De La Fuente ◽  
M. Iturralde-Vinent
Keyword(s):  
Pacific Ocean ◽  
New Genus ◽  
Sister Group ◽  
Phylogenetic Hypothesis ◽  
New Genus And Species ◽  
Western Tethys ◽  
The Pacific ◽  
The Pacific Ocean ◽  
The Caribbean

The oldest Jurassic marine pleurodire is reported from the Jagua Formation in western Cuba. These remains are from levels of middle and late Oxfordian age. This turtle represents a new genus and species, Caribemys oxfordiensis. A phylogenetic hypothesis is proposed, whereby Caribemys is considered to be the sister group of Notoemys Cattoi and Freiberg, 1961, plus the Eupleurodira Gaffney and Meylan, 1988. The occurrence of Caribemys oxfordiensis n. gen. and sp. in the Jagua Formation along with plesiosauroids, pliosauroids, ophthalmosaurian ichthyosaurs, and metriorhynchid crocodiles, strongly suggests that during the Oxfordian a marine seaway was present in the Caribbean, connecting the western Tethys with the Pacific Ocean.

Evidence of a geographical variation in Mesochaetopterus (Polychaeta: Chaetopteridae) from the Pacific Ocean

2005 ◽  
Vol 85 (6) ◽  
pp. 1409-1423 ◽  
Author(s):  
Michel R. Bhaud
Keyword(s):  
Pacific Ocean ◽  
New South ◽  
Solomon Islands ◽  
New South Wales ◽  
Morphological Variations ◽  
Geographical Variations ◽  
South Wales ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Hard Structures

Specimens of Mesochaetopterus (Chaetopteridae) from seven geographical sources in the Pacific Ocean are compared on the basis of their hard structures: specialized chaetae, uncinal plates and tubes. There geographical variations are investigated both locally (New South Wales and the Solomon Islands) and over the whole Pacific Ocean from Australia (New South Wales) through the Solomon Islands to Galapagos and Hawaii. The most interesting result is the existence of intra-regional morphological variations with the hard structures differing on specimens sampled in two areas from New South Wales or in two areas from the Solomon Islands out of a total of three areas. These newly described morphologies imply that M. minutus, isolated in a first step from M. sagittarius and confined to the Pacific, is a pseudo-sibling species complex. Each element of this complex is morphologically distinguishable. Consequently the generally accepted role of the long-lived planktonic larvae characteristic of Mesochaetopterus, as a source of geographical homogeneity must be re-examined.

scholarly journals Spinal Anaesthesia for Caesarean Section in the Solomon Islands

1994 ◽  
Vol 22 (2) ◽  
pp. 187-191 ◽  
Author(s):  
C. J. Sparks ◽  
H. Perndt ◽  
K. Agiomea ◽  
J. Fa'Arondo
Keyword(s):  
Pacific Ocean ◽  
Caesarean Section ◽  
Spinal Anaesthesia ◽  
Pacific Islands ◽  
Solomon Islands ◽  
General Anaesthetic ◽  
Tropical Country ◽  
The Pacific ◽  
The Pacific Ocean

Results were kept on 43 spinal anaesthetics performed for caesarean section in the Solomon Islands, a developing tropical country in the Pacific Ocean. A 25-gauge Quincke needle was used and either 2.5 ml of heavy bupivacaine 0.5% or 2.0-2.5 ml of plain bupivacaine 0.5% were injected. Hypotension down to 85 mmHg occurred in four patients and there were no spinal headaches. Five patients had to be given a general anaesthetic. We recommend this technique to other doctors working in the Pacific Islands.

scholarly journals Species Composition and New Records of Diatom Taxa on Phyllodictyon pulcherrimum (Chlorophyceae) from the Gulf of California

Diversity ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 339
Author(s):  
Francisco Omar López-Fuerte ◽  
David Alfaro Siqueiros Beltrones ◽  
María del Carmen Altamirano-Cerecedo
Keyword(s):  
Gulf Of California ◽  
New Records ◽  
American Continent ◽  
Epiphytic Diatoms ◽  
Taxonomic Analysis ◽  
The North ◽  
The Pacific ◽  
The Pacific Ocean ◽  
First Time ◽  
The North Pacific

A taxonomic analysis of diatoms found on Phyllodictyon pulcherrimum yielded a total of 244 diatom taxa (all illustrated) within 27 orders, 45 families, and 86 genera. The Taxa were briefly documented in a list including identification references and morphometric data. Thirty-eight of the taxa identified at the species and infraspecific levels represent new records for the coasts of Mexico. Seven were recorded for the first time on the American continent: Auricula flabelliformis, A. pulchra, Campylodiscus scalaris, Coscinodiscus mesoleius, Dimeregramma fulvum, Navicula palpebralis var. angulosa, and Seminavis barbarae, and one, Nitzschia fusiformis, for the Pacific Ocean. This is the second record of the chlorophyte P. pulcherrimum in the north Pacific and the third for Mexican waters. The results confirm that surveying rare macroalgae species as hosts for epiphytic diatoms provides opportunities to seek new records of diatom taxa, or even new taxa, in regions around the world.

A new species ofTriptolemma(Porifera: Pachastrellidae) from the Pacific Ocean with a revision of the genus

2010 ◽  
Vol 91 (2) ◽  
pp. 329-338 ◽  
Author(s):  
Marco Bertolino ◽  
D. Pica ◽  
G. Bavestrello ◽  
N. Iwasaki ◽  
B. Calcinai
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Chemical Dissolution ◽  
Typical Pattern ◽  
Etching Mechanism ◽  
The Pacific ◽  
The Pacific Ocean ◽  
First Time ◽  
A New Species ◽  
Thick Crust

A new species,T. strongylatasp. nov. is described on the basis of material collected from the Pacific Ocean. The new species is characterized by the presence of sinuous strongyles. Moreover the incomplete description ofT. simplex(Sarà, 1959) is implemented on the basis of new abundant material allowing, for the first time, the complete description of the skeleton of aTriptolemmaspecies and the detecting of the presence of monaxonic spicules in the spicular complement of the genus. The skeleton is composed of a thick crust of disorderly arranged mesotriaenes and scattered microscleres, supported by diverging spicule tracts formed by oxeas towards the surface. Both species were recorded associated to boring sponges(SpiroxyaandCliona)in excavations of the calcareous scleraxis of precious corals or in organogenic concretions. In the cavities where the tissue ofTriptolemmawas recorded the wall of the excavation partially lost its typical pattern characterized by ovoid scars and became irregularly eroded. Our hypothesis is thatTriptolemmainsinuates inside the erosions produced by other sponges and it is able to enlarge them by an etching mechanism based on chemical dissolution only.

RECORDS OF CYAMUS BALAENOPTERAE BARNARD AND NEOCYAMUS PHYSETERIS (POUCHET), TWO SPECIES OF WHALE-LICE (AMPHIPODA), FROM THE NORTHEAST PACIFIC

1959 ◽  
Vol 37 (6) ◽  
pp. 895-897 ◽  
Author(s):  
L. Margolis
Keyword(s):  
Pacific Ocean ◽  
First Record ◽  
Physeter Macrocephalus ◽  
Balaenoptera Acutorostrata ◽  
Northeast Pacific ◽  
The Pacific ◽  
The Pacific Ocean ◽  
First Time

Cyamus balaenopterae Barnard from Balaenoptera acutorostrata and Neocyamus physeteris (Pouchet) from Physeter macrocephalus are reported for the first time from the Pacific Ocean. This is the first record of a cyamid from B. acutorostrata.

scholarly journals The Nazca Drift System – palaeoceanographic significance of a giant sleeping on the SE Pacific Ocean floor

2021 ◽  
pp. 1-15
Author(s):  
Gérôme Calvès ◽  
Alan Mix ◽  
Liviu Giosan ◽  
Peter D. Clift ◽  
Stéphane Brusset ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Deep Water ◽  
Bottom Current ◽  
Ocean Drilling Program ◽  
Nazca Plate ◽  
Ocean Drilling ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Nazca Ridge ◽  
Sea Currents

Abstract The evolution and resulting morphology of a contourite drift system in the SE Pacific oceanic basin is investigated in detail using seismic imaging and an age-calibrated borehole section. The Nazca Drift System covers an area of 204 500 km2 and stands above the abyssal basins of Peru and Chile. The drift is spread along the Nazca Ridge in water depths between 2090 and 5330 m. The Nazca Drift System was drilled at Ocean Drilling Program Site 1237. This deep-water drift overlies faulted oceanic crust and onlaps associated volcanic highs. Its thickness ranges from 104 to 375 m. The seismic sheet facies observed are associated with bottom current processes. The main lithologies are pelagic carbonates reflecting the distal position relative to South America and water depth above the carbonate compensation depth during Oligocene time. The Nazca Drift System developed under the influence of bottom currents sourced from the Circumpolar Deep Water and Pacific Central Water, and is the largest yet identified abyssal drift system of the Pacific Ocean, ranking third in all abyssal contourite drift systems globally. Subduction since late Miocene time and the excess of sediments and water associated with the Nazca Drift System may have contributed to the Andean orogeny and associated metallogenesis. The Nazca Drift System records the evolution in interactions between deep-sea currents and the eastward motion of the Nazca Plate through erosive surfaces and sediment remobilization.

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