Náttúrufræðingurinn

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Náttúrufræðingurinn - 1987, Síða 32

Náttúrufræðingurinn - 1987, Síða 32
HEIMILDIR Anonymus 1983. Informal meeting of the Special Study Group of the North At- lantic Salmon Working Group. (Óbirt skýrsla) Aberdeen: 6 bls. Dietrich, G. 1969. Atlas af the hydrography of the northern North Atlantic Ocean. - Conseil International pour L’Explora- tion de la Mer, Service Hydro- graphique, Charlottenlend Slot, Dane- mark: 140 bls. Gísli Ólafsson. 1984. Laxveiðar í Noregs- hafi. - Ægir 77: 72-74. Mills, D. & N. Smart. 1982. Report on a vis- it to the Faroes. - Atlantic Salmon Trust, Surrey. 52 bls. SUMMARY A trip on a Faro- ese salmon fishing boat in the Norwegian Sea in 1982. by Gísli Ólafsson Marine Research Institute, P.O. Box 1390, Skúlagata 4, Reykjavík, Iceland A total of 2958 salmon were caught during the 18 days of fishing. Of these 237 were less than 60 cm (discarded) and 53 slipped off the hook by the side of the boat. The total number of salmon landed was thus 2668 (Table 2). The average length of 106 salmon which were mea- sured was 78 cm or 4 kg and thus the catch landed from the cruise was about 10.7 tons. The majority of the salmon caught ranged between 61-80 cm (Fig. 7), main- ly fish which have been in the ocean for 2 years. The males were found to be larger than the females of the same age (Fig. 8). The females, however, were, more nu- merous than the males (71.4% and 28.6% of the catch respectively). Not all the salmon were found to be of the same maturity stage and apparently 3 of the females had just spawned (Stage 7-2 on- Fig. 9). Possibly these salmon had not found the way to their homegrounds and therefore spawned in the open ocean. It is pointed out that certainly this phenomenon is worth greater attention. A preliminary examination of the stomach contents showed Myctophidae, Euphausiacea and Paralepididae to be the most important constituents. In 1981 the ICES Anadromous and Catadromous Fish Committee decided to send observers from several countries on board Faroese salmon fishing boats. The paper reports on one such mission undertaken by an Icelander on the salm- on long-line boat Hamrafossur. The fishing area was north-northeast of the Faroe Islands (Fig. 1). A brief de- scription is given of the long line used for the fishing (Fig. 2, Table 1) and how it is set and hauled (Fig. 3). The handling of the fish on board the ship is also de- scribed and a preliminary analysis of the data gathered is presented. 126

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