Redescription of Lophoura gracilis (Wilson, 1919) (Copepoda: Sphyriidae) from Synaphobranchus kaupi in the Northwest Atlantic Ocean

1985 ◽  
Vol 63 (12) ◽  
pp. 2940-2943 ◽  
Author(s):  
William E. Hogans ◽  
Michael J. Dadswell
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
Original Description ◽  
The Other ◽  
Valid Species ◽  
Scotian Shelf ◽  
Northwest Atlantic

The mesoparasitic copepod Lophoura gracilis is redescribed from eight female specimens recovered from synaphobranchid eels captured at 600 m on the Scotian Shelf. This is the first documentation of L. gracilis since the original description. We conclude that L. gracilis is a valid species distinct from the other North Atlantic representatives of this genus.

Complement to the knowledge of the Haploops species (Crustacea, Gammaridea, Ampeliscidae), with the description of two new species from North Atlantic Ocean. [Contribution to the knowledge of the Haploops genus. 10.]

Zootaxa ◽  
2021 ◽  
Vol 5048 (2) ◽  
pp. 151-175
Author(s):  
R.A. KAIM-MALKA ◽  
D. BELLAN-SANTINI ◽  
J.C. DAUVIN
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Morphological Characters ◽  
Valid Species ◽  
Single Pair ◽  
The North ◽  
Two New Species ◽  
The Status ◽  
The North Atlantic

Two new Haploops species are described from the North Atlantic Ocean: a blind species Haploops faroensis spec. nov. and Haploops truncata spec. nov. with a single pair of corneal lenses. In addition, Haploops vallifera Stephensen 1925 and Haploops similis Stephensen 1925, are re-described and the status of Haploops spinosa Shoemaker 1931, is re-established as a valid species. A table is given of the 75 morphological characters of the studied species.  

Description of a new species of pontellid copepod, Anomalocera opalus, from the Gulf of St. Lawrence and shelf waters of the Northwest Atlantic Ocean

1976 ◽  
Vol 54 (10) ◽  
pp. 1664-1668 ◽  
Author(s):  
William M. Pennell
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
North Atlantic ◽  
Anatomical Structure ◽  
Sea Surface ◽  
Northwest Atlantic ◽  
A New Species

A new species of pontellid copepod, Anomalocera opalus, is described from the Gulf of St. Lawrence and shelf waters of the western North Atlantic. A new anatomical structure is described that enables this species to attach itself to the sea surface. The distribution of the new species is given.

Two new Auletta Schmidt, 1870 (Axinellidae; Demospongiae; Porifera) from Brazil

Zootaxa ◽  
2017 ◽  
Vol 4273 (1) ◽  
pp. 121
Author(s):  
THAYNÃ CAVALCANTI ◽  
RADHARANNE RECINOS ◽  
ULISSES PINHEIRO
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
The Other ◽  
External Morphology ◽  
Northeastern Brazil ◽  
Valid Species ◽  
Brazilian Coast ◽  
Tubular Shape ◽  
Cavernous Body

The genus Auletta Schmidt, 1970 comprises 14 valid species, with six known from the Atlantic Ocean. The genus was previously recorded for the Brazilian coast only in 1967 from surveys in Pernambuco State. The present paper describes two new Auletta from Northeastern Brazil. Auletta akaroa sp. nov. is from Alagoas State and it has a stalked tubular shape and small sinuous styles and strongyles. Auletta laboreli sp. nov. was found in Pernambuco State and it is a sponge with a cylindrical and cavernous body composed of styles with blunt and telescopic tips and sinuous strongyles. Both new species were compared with the other valid species of Auletta. The spicule complement and external morphology of the new species are discussed. 

Blood parasites of fish from the northwestern Atlantic Ocean

1980 ◽  
Vol 58 (5) ◽  
pp. 770-781 ◽  
Author(s):  
R. A. Khan ◽  
M. Barrett ◽  
J. Murphy
Keyword(s):  
Atlantic Ocean ◽  
Marine Fish ◽  
Cold Water ◽  
The Other ◽  
Blood Parasites ◽  
Scotian Shelf ◽  
Blood Smears ◽  
Water Species ◽  
Cold Water Species ◽  
Thin Blood Smears

Examination of thick and thin blood smears from 5013 marine fish from the northwestern Atlantic Ocean revealed 25 of 59 species to be infected with one or more of the following blood parasites: trypanosomes (27% of 3610), trypanoplasms (9% of 588), piroplasms (26% of 2584), and haemogregarines (36% of 1708). Higher prevalences of infection were observed in cold-water, benthic, sedentary fish than in warm-water, littoral, epipelagic, or midwater species. Trypanosome infections were more prevalent among fish taken off the Labrador – east Newfoundland coasts, lower in those from St. Pierre Bank, Grand Bank, and Gulf of St. Lawrence, and lowest in forms from the Scotian Shelf. Seven of nine species of hematophagous leeches harboured asexual stages of haemogregarines, whereas natural infections of trypanosomes occurred in one leech, Johanssonia arctica. Using five species of laboratory-reared leeches and laboratory-initiated infections of trypanosomes in piscine hosts, development of Trypanosoma murmanensis was observed only in J. arctica. It is suggested that the distribution of trypanosomes of marine fish is related to that of J. arctica, a cold-water species, whereas the other haematozoan infections might be attributed to those leech species that are associated with their respective piscine hosts.

Paleomagnetism of the Notre Dame Bay lamprophyre dikes, Newfoundland, and the opening of the North Atlantic Ocean

1979 ◽  
Vol 16 (9) ◽  
pp. 1823-1831 ◽  
Author(s):  
P. L. Lapointe
Keyword(s):  
Thermal Treatment ◽  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Tectonic Setting ◽  
The Other ◽  
The North ◽  
Paleomagnetic Study ◽  
Normal Polarity ◽  
The North Atlantic

Lamprophyre dikes and the Leading Tickles dunite from Notre Dame Bay. Nfld., were sampled for a paleomagnetic study to define their age relationships and the tectonic implications of their emplacements. A single normal polarity direction (328°, +62°) was obtained by alternating field and thermal treatment, from 10 Cretaceous lamprophyre dikes. The paleopole (2I2°E, 67°N) derived from these dikes agrees with the cluster of North American Cretaceous paleopoles. On the other hand. I he Leading Tickles dunite recorded two magnetizations: one (206°, +32°) related to the time of intrusion and interpreted to be Ordovician; the second one (000°, +66°). an overprint, is related to the intrusion of the lamprophyre dikes and interpreted to be Cretaceous. The polarity, paleopole, radiometric age, and tectonic setting of the lamprophyre dikes when compared with the Isachsen dikes. N.W.T., suggest the opening of the North Atlantic Ocean was initiated in the Lower Cretaceous.

The mid-Cretaceous succession of Orphan Knoll (northwest Atlantic): micropalaeontology and palaeo-oceanographic implications

1976 ◽  
Vol 13 (10) ◽  
pp. 1411-1421 ◽  
Author(s):  
Malcolm B. Hart
Keyword(s):  
Surface Water ◽  
Atlantic Ocean ◽  
North Atlantic ◽  
World Wide ◽  
North Atlantic Ocean ◽  
Water Circulation ◽  
Northwest Atlantic ◽  
The North ◽  
The North Atlantic

Micropalaeontological investigation of the mid-Cretaceous succession (Albian–Cenomanian) of Orphan Knoll (northwest Atlantic Ocean) has allowed direct stratigraphic comparison with successions of a similar age elsewhere in the area of the North Atlantic Ocean. The microfaunal evidence presently available suggests a major world-wide eustatic change in the mid-Cenomanian, together with associated changes in the surface water circulation of the Cretaceous North Atlantic Ocean.

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