Fiskeri og hvalfangst i det nordlige Norge.

Hjort, Johan

doi:10.5962/bhl.title.68101

Cited by 6 publications

(9 citation statements)

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“…The TÔsinge stranding also involved a live whale but occurred in February, which could correspond to an early migration north from lower latitudes. Northern bottlenose whales are seen as early as March around the Faroe Islands (Hjort, 1902). Thus, three of the samples provide insight into the feeding habits of this species as it travels to and from its summer feeding grounds.…”

Section: Discussionmentioning

confidence: 99%

Stomach contents of northern bottlenose whales Hyperoodon ampullatus stranded in the North Sea

et al. 2001

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This paper presents information on the stomach contents of four northern bottlenose whales Hyperoodon ampullatus (Odontoceti: Ziphiidae) from the north-east Atlantic, an area for which there are few recent data on the feeding ecology of this species. Two of these whales were relatively recent strandings, a female stranded in August 1993 at Hargen (the Netherlands) and a male stranded in February 1997 on the island of Tåsinge (Denmark). Stomach content samples were also examined from a juvenile male stranded in November 1885 at Dunbar (Scotland) and a female stranded in August 1956 on the island of Texel (the Netherlands). Food remains from the four samples consisted almost entirely of cephalopod beaks. Some fish remains were also found in the stomach of the Hargen and Tåsinge whales, and the latter also had crustacean remains in the stomach. The cephalopod prey consisted mainly of oceanic cephalopods: Gonatus sp. (probably G. fabricii, Cephalopoda: Teuthoidea), Taoniuspavo and Histioteuthis sp. for the Dunbar whale; Gonatus and Teuthowenia megalops for the Texel whale; Gonatus for the Hargen whale and Gonatus, T. megalops and Taonius pavo for the Tåsinge whale. Other prey species found in the Tåsinge specimen included the squid Histioteuthis reversa, H. arcturi, and the octopods Vampiroteuthis infernalis and Vitreledonella richardi. Based on the size of the lower beaks, the squid eaten included juvenile and mature individuals of the most important species (Gonatus and Teuthowenia megalops). The fish remains consisted of vertebrae of Gadidae and fish eye lenses (Hargen whale) and two Trisopterus otoliths (Tåsinge whale). The results from this study are in agreement with those of previous authors in that cephalopods in general, and G. fabricii in particular, are the main prey of the northern bottlenose whale and other toothed whales in northern latitudes.

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Section: Discussionmentioning

confidence: 99%

Stomach contents of northern bottlenose whales Hyperoodon ampullatus stranded in the North Sea

et al. 2001

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“…In autumn and winter northern bottlenose whales stay in more southern regions before migrating northwards. The migration to the north starts in spring and southward migration begins in late summer (Hjort, 1902;Benjaminsen, 1972). During this migration some animals seem to lose their orientation and do not follow the traditional migration routes which then causes the standings in shallow waters of the North and the Baltic Seas.…”

Section: Discussionmentioning

confidence: 99%

Stomach Contents of a Northern Bottlenose Whale (Hyperoodon Ampullatus) Stranded at Hiddensee, Baltic Sea

Lick¹,

Piatkowski

1998

J. Mar. Biol. Ass.

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The stomach of a female northern bottlenose whale, Hyperoodon ampullatus (Odontoceti: Ziphiidae) stranded at Hiddensee Island, western Baltic Sea, on 23 August 1993 contained 7465 cephalopod beaks (4934 upper and 2531 lower). The lower beaks were identified, their rostral lengths were measured and used to estimate size and mass of the cephalopods consumed by the whale. All lower beaks belonged to one species, the boreoatlantic gonate squid Gonatus fabricii (Cephalopoda: Teuthoidea) indicating a mean squid mantle length of 21·9 cm and a mean squid wet mass of 220·7 g. The total squid biomass in the whale's stomach represented by the lower beaks was 598·6 kg. Assuming that all upper beaks belong to G. fabricii, the squid biomass taken by the whale was estimated to be 1089 kg. Besides the beaks partly digested squid gladii, spermatophores and 15 specimens of the fish parasite Sphyrion lumpi (Crustacea: Copepoda) occurred in the stomach. No fish remains were found.

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“…The Norwegian white whale hunt at Svalbard started in 1866. The most important hunting areas were the fjord!> along the west coast of Spitsbergen and Hinlopenstrctct (lngebrigtsen, cited by Hjort 1902). During the first four years a total of somewhat more than 800 animal!> was caught, while in 1870 alone about twice Lhi~ number wa!> caught (Wolleba:k 190 I).…”

Section: Resultsmentioning

confidence: 99%

“…According to whalers and early naturalists white whales were common along the coasts of Svalbard and were frequently found in shallow waters in the inner fjord areas at the mouths of glacial rivers (Malmgren 1863, Kiikenthal I 900, Nathorst 1900, Collett 1911 and at glacier fronts where they fed on polar cod (Kolthoff 1903, Grieg 1921. According to Ingebrigtsen (cited by Hjort 1902) the distribution of white whales varied according to the prevailing weather and ice conditions. In northeasterly winds they were found in Storfjorden and in southerly winds in Bellsund.…”

Section: Discussionmentioning

confidence: 99%

Distribution and catch of white whales (Delphinapterus leucas) at Svalbard

Gjertz,

Wiig

1994

Meddr Grønland. Biosci

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The distribution and catch of white whales at Svalbard are discussed based on literature, interviews with local residents, trappers and pilots, opportunistic observations recorded in the Norwegian Polar Institute fauna-data-base, and personal observations by the authors. The total number of white whales killed in Svalbard from the 18th century to the early 1960s was considerably higher than 15 000 animals. Today white whales are protected in Norwegian waters. Most white whales seem to appear at Svalbard in the spring and to leave again when the western fjords freeze in the autumn. However it is not known whether they come from and return to the eastern Greenland Sea or the Barents Sea. The number of white whales using the Svalbard area is not known, but since they have been protected for the last 30 years the population is assumed to be secure.

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Fiskeri og hvalfangst i det nordlige Norge.

Cited by 6 publications

References 0 publications

Stomach contents of northern bottlenose whales Hyperoodon ampullatus stranded in the North Sea

Stomach contents of northern bottlenose whales Hyperoodon ampullatus stranded in the North Sea

Stomach Contents of a Northern Bottlenose Whale (Hyperoodon Ampullatus) Stranded at Hiddensee, Baltic Sea

Distribution and catch of white whales (Delphinapterus leucas) at Svalbard

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