Unusual Fishes Taken by Midwater Trawl off the Queen Charlotte Islands, British Columbia

1967 ◽  
Vol 24 (10) ◽  
pp. 2101-2115 ◽  
Author(s):  
F. H. C. Taylor
Keyword(s):  
British Columbia ◽  
Continental Slope ◽  
Open Ocean ◽  
Sound Scattering ◽  
Midwater Trawl ◽  
Queen Charlotte Islands

On three cruises in 1964 and 1965 the CGS G. B. Reed midwater-trawled beyond the continental slope south and west of the Queen Charlotte Islands to determine the types of fish associated with the open ocean sound-scattering layers. The fish taken included seven species not previously reported from British Columbia, and four which are second records. Species not previously reported from British Columbia are: Sagamichthys abei, Notolepis rissoi rissoi, Scopelosaurus harryi, Borodulina infans, Serrivomer jesperseni, Oneirodes acanthias, and Chaenophryne, cf. parviconus. Species reported once before include: Bathylagus ochotensis, Nansenia Candida, Caristius macropus, and Oneirodes eschrichti-group.

The Relationship of Midwater Trawl Catches to Sound Scattering Layers off the Coast of Northern British Columbia

1968 ◽  
Vol 25 (3) ◽  
pp. 457-472 ◽  
Author(s):  
F. H. C. Taylor
Keyword(s):  
Vertical Migration ◽  
Sound Scattering ◽  
Migration Patterns ◽  
Midwater Trawl ◽  
Main Layer ◽  
Queen Charlotte Islands ◽  
Deep Layers ◽  
Relationship Of ◽  
The Relationship ◽  
Persistent Layer

In 1964 and 1965 three midwater trawl cruises off the continental slope near the Queen Charlotte Islands were made to study the relationship of the catches to sound scattering layers.During the daytime four layers were distinguished, not all necessarily present at one time. In summer the most intense and persistent layer lay at 220–230 m; others were at 330–400, 185, and 90 m. In fall the main and deep layers were shallower. Vertical migration occurred at dusk and dawn. The main layer frequently split into three parts with different vertical migration patterns. At dawn a layer gradually appeared at about 90 m, intensified rapidly, and descended to the daytime level.Catches show fishes are associated with the sound scattering layers. The largest day catches were from the main layer. At night fish did not appear to be concentrated to the same extent relative to the layers. The largest night catches were usually smaller than the largest day catches and shallower.Myctophids of eight species, four common, made up 80% of the catch, chauliodontids 6%, argentinids 4%, melamphids, rockfish, and larval flatfish 2% each. The remaining 2% comprised 27 species in 21 families. Depth distribution and vertical migration varied considerably with the species.Myctophids with gas-filled swim bladders were apparently dominant in the main layers whereas species without swim bladders — stomiatoids, argentinids, and melamphids — or myctophids with fat-filled swim bladders were dominant below the main layer and in the deep layer. Fish with no swim bladders or with fat-filled ones may make longer vertical migrations than those with gas-filled bladders.

III.—Recent Observations on the Glaciation of British Columbia and Adjacent Regions

1888 ◽  
Vol 5 (8) ◽  
pp. 347-350 ◽  
Author(s):  
Geo. M. Dawson
Keyword(s):  
British Columbia ◽  
Glacial Period ◽  
Coast Range ◽  
Coast Mountains ◽  
One Stage ◽  
Queen Charlotte Islands ◽  
Glacier Ice ◽  
Inland Ice ◽  
Great Valley ◽  
The U.S

Previous observations in British Columbia have shown that at one stage in the Glacial period—that of maximum glaciation—a great confluent ice-mass has occupied the region which may be named the Interior Plateau, between the Coast Mountains and Gold and Eocky Mountain Kanges. From the 55th to the 49th parallel this great glacier has left traces of its general southward or southeastward movement, which are distinct from those of subsequent local glaciers. The southern extensions or terminations of this confluent glacier, in Washington and Idaho Territories, have quite recently been examined by Mr. Bailley Willis and Prof. T. C. Chamberlin, of the U.S. Geological Survey. There is, further, evidence to show that this inland-ice flowed also, by transverse valleys and gaps, across the Coast Range, and that the fiords of the coast were thus deeply filled with glacier-ice which, supplemented by that originating on the Coast Range itself, buried the entire great valley which separates Vancouver Island from the mainland and discharged seaward round both ends of the island. Further north, the glacier extending from the mainland coast touched the northern shores of the Queen Charlotte Islands.

Occella impi, a New Species of Sea Poacher from British Columbia with Notes on Related Species (Agonidae, Pisces)

1970 ◽  
Vol 27 (6) ◽  
pp. 1109-1114 ◽  
Author(s):  
C. G. Gruchy
Keyword(s):  
British Columbia ◽  
New Species ◽  
Related Species ◽  
Single Specimen ◽  
Queen Charlotte Islands ◽  
A New Species

Occella impi, a new species of sea poacher, is described from a single specimen captured in the Queen Charlotte Islands, British Columbia. Occella impi differs from other species of Occella in having spinous plates on the breast, the anus nearer the anal fin, and fewer anal rays; also, the numbers of bony body plates are distinctive. A key to the known species of Occella, based primarily on the numbers of bony body plates, is included. The size of the maxillary barbel and number of infralateral plates are shown to be characteristic of the genera Occella and Stellerina.

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