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- Granmo, Åke, 1943, et al.
(författare)
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Effects of antifouling paint components (TBTO, copper and triazine) on the early development of embryos in cod (Gadus morhua L.)
- 2002
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Ingår i: Marine Pollution Bulletin. - 0025-326X. ; 44:10, s. 1142-1148
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Tidskriftsartikel (refereegranskat)abstract
- To assess the risk of antifoulant use to the commercially important cod (Gudus morphua L.). fertilised cod eggs were exposed to triazine, copper and TBTO singly or combined in laboratory tests with running seawater. :fit the highest tested concentrations ( I 1.5 mug Cu l(-1); 5 mug TBTO l(-1)) larval mortality was increased. The highest concentration of triazine ( () ye I) did not cause any significant mortality. Fertilised eggs that had been exposed to all the three chemicals singly for five days shroud a higher buoyancy than the controls. No synergistic or antagonistic effects were indicated. Embryos/larvae exposed to 0.004-0.8 mug TBTO l(-1) did not show any changed respiration compared to the controls after hatching. It is concluded that existing known field concentrations of the three antifoulants are hardly expected to cause detectable effects on fish embryonic/larval development. (C) 2002 Elsevier Science Ltd. All rights reserved.
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| 2. |
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| 3. |
- Selbmann, Anna, et al.
(författare)
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Call type repertoire of killer whales (Orcinus orca) in Iceland and its variation across regions
- 2023
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Ingår i: Marine mammal science. - 0824-0469 .- 1748-7692. ; 39:4, s. 1136-1160
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Tidskriftsartikel (refereegranskat)abstract
- Killer whales (Orcinus orca) have group-specific call repertoires that can be used to track groups and populations using passive acoustic monitoring. To provide a detailed description of the Icelandic killer whale repertoire and its variation, we analyzed acoustic data collected in five locations between 1985 and 2016. Calls were classified manually, and CART and random forest analyses were employed to validate the manual classification. A total of 91 call categories (including call types and subtypes) were defined. Most call categories were recorded in more than one location, with the highest proportion shared between herring grounds in Vestmannaeyjar (South) and Breiðafjörður (West). However, both locations included call categories that were not recorded elsewhere in Iceland. Recordings from past herring wintering grounds in eastern Iceland included few call categories that matched other locations. Sample sizes from Reykjanes (Southwest) and Skjálfandi (North) were small and did not include unique call categories. The relative occurrence of call categories in Vestmannaeyjar changed little over a 14-year period (2002–2016), although shorter-term changes between years were observed that appeared to correlate to changes in individuals identified. This comparison of acoustic repertoires provides valuable information on the social structure and movement patterns of herring-eating killer whales around Iceland.
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| 4. |
- Halldorsson, H. P., et al.
(författare)
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The effect of pollution on scope for growth of the mussel (Mytilus edulis L.) in Iceland
- 2005
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Ingår i: Marine Environmental Research. - : Elsevier BV. - 0141-1136. ; 59:1, s. 47-64
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Tidskriftsartikel (refereegranskat)abstract
- In order to evaluate effects of contaminants at high latitudes, the effects on scope for growth (SFG) were evaluated for both transplanted and resident blue mussel (Mytilus edulis L.) near large and small harbours in Iceland. Low SFG values were found for mussels at the mouth and in the inner part of the large Reykjavik harbour, which could be attributed to elevated levels of organotins and polyaromatic hydrocarbons. Mussels in smaller and/or less polluted harbours and sites off Reykjavik harbour only showed a slight reduction in SFG. No major effects were found at sites > 3 km from the large harbour of Reykjavik. SFG provides valuable information on the effects of harbour pollutants in Iceland, in particular in areas of extensive shipping activity. The use of this biomarker on high latitude organisms is highly relevant due to extended oil exploration at higher latitudes. (C) 2004 Elsevier Ltd. All rights reserved.
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