Fecundity characteristics ofCalanus finmarchicusin coastal waters of eastern Canada

Radar studies in eastern Canada of spruce budworm moth distribution patterns and associated windfields frequently revealed mesoscale synoptic features induced by the strong thermal contrast between the heated land surface and the surrounding coastal waters that resulted in significant redistribution of the airborne moths. Experience gained during a four-year study in New Brunswick enabled meteorologists to identify the synoptic situations favouring the development of these mesoscale features. This paper examines the details of a particular case, on 15-16 July 1976, when insect detection teams were alerted in advance to the existence and location of a significant wind convergence zone.

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Hybridization Between a Green Turtle, Chelonia mydas, and Loggerhead Turtle, Caretta caretta, and the First Record of a Green Turtle in Atlantic Canada

The Canadian Field-Naturalist ◽

10.22621/cfn.v118i4.59 ◽

2004 ◽

Vol 118 (4) ◽

pp. 579 ◽

Cited By ~ 9

Author(s):

Michael C. James ◽

Kathleen Martin ◽

Peter H. Dutton

Keyword(s):

Coastal Waters ◽

Green Turtle ◽

Loggerhead Turtle ◽

Chelonia Mydas ◽

Caretta Caretta ◽

First Record ◽

Atlantic Canada ◽

Eastern Canada ◽

Northwest Atlantic

The Green Turtle (Chelonia mydas) principally occupies tropical and subtropical waters, although juveniles are known to occur seasonally in temperate coastal waters. Collaboration with commercial fishers in eastern Canada yielded the most northerly records of this species in the northwest Atlantic. Here we report on the first confirmed record of a Green Turtle in eastern Canada and on the occurrence of a rare Green Turtle–Loggerhead Turtle (Caretta caretta) hybrid. Hybridization between the Carettini and Chelonini is extraordinary given that these groups have been genetically distinct for 50 million years or more.

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The Smaller Cetacea of Eastern Canadian Waters

Journal of the Fisheries Research Board of Canada ◽

10.1139/f57-003 ◽

1957 ◽

Vol 14 (1) ◽

pp. 83-115 ◽

Cited By ~ 33

Author(s):

D. E. Sergeant ◽

H. D. Fisher

Keyword(s):

Coastal Waters ◽

Newfoundland And Labrador ◽

Killer Whale ◽

Climatic Zone ◽

Labrador Sea ◽

Eastern Canada ◽

Pilot Whale ◽

Summer Range ◽

Lagenorhynchus Acutus ◽

Pilot Whales

An account is given of the known records, distribution and migrations of the smaller Odontocete whales occurring in eastern Canadian waters, with measurements of specimens obtained of the rarer species. The distribution of the abundant pilot whale Globicephala melaena (Traill) has been studied in most detail. The species' summer range includes both the offshore waters of the Labrador Sea and the coastal waters around Newfoundland. The coastal population feeds only on the squid Illex illecebrosus (LeSueur) and its movements inshore in spring and offshore in autumn follow those of the squid over the southwest Grand Bank. In some years a failure of the squid to move shorewards results in a failure of the fisheries for both squid and pilot whales in Newfoundland. The species is known to winter in an oceanic area southeast of the Grand Bank.The white-sided dolphin Lagenorhynchus acutus Gray associates with the pilot whale and apparently inhabits the same climatic zone in these waters, while the white-beaked dolphin L. albirostris Gray is found in somewhat colder waters. The killer whale Grampus orca (L.) migrates northwards in spring along the Newfoundland and Labrador coasts, its migration coinciding with that of the rorquals.New records for the waters of eastern Canada, extending the known range of each, are given for Mesoplodon bidens, Tursiops truncatus, Lagenorhynchus albirostris and Lagenorhynchus acutus.

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The diet of harbor porpoises (Phocoena phocoena (L.)) in coastal waters of Eastern Canada, with special reference to the Bay of Fundy

Canadian Journal of Zoology ◽

10.1139/z74-102 ◽

1974 ◽

Vol 52 (6) ◽

pp. 777-782 ◽

Cited By ~ 28

Author(s):

G. J. D. Smith ◽

D. E. Gaskin

Keyword(s):

Coastal Waters ◽

Gadus Morhua ◽

Stomach Contents ◽

Clupea Harengus ◽

Osmerus Mordax ◽

Phocoena Phocoena ◽

Eastern Canada ◽

Silver Hake ◽

Merluccius Bilinearis ◽

Harbor Porpoises

Stomach contents of 81 harbor porpoises (Phocoena phocoena (L.)) collected from eastern Canadian coastal waters during 1969–1972 were examined. A total of 454 free otoliths and 54 undigested specimens representing a minimum of 281 fish, consisting of nine species in seven families, were recovered from the copious semidigested fish remains found in 52 of the stomachs. Clupea harengus (herring), Gadus morhua (cod), and Scomber scombrus (mackerel) otoliths accounted for more than 78% of the total. Osmerus mordax (smelt), Pollachius virens (pollock), Merluccius bilinearis (silver hake), Sebastes marinus (redfish), and Macrozoarces americanus (ocean pout) otoliths were also identified. Squid (Illex sp.), hagfish (Myxine glutinosa), and polychaetes (Nereis sp.) were identified in a few stomachs. Fifteen of the stomachs examined were empty or contained only fluid. Examination of the stomachs of the 16 smallest animals indicated that weaning occurred at body lengths of 100–104 cm.

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