Seasonal species composition and distribution of barnacle larvae in Avacha Inlet (Kamchatka)

  • Korn O
  • Kulikova V
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Abstract

The annual dynamics of the numbers and distribution of barnacle larvae in Avacha Inlet were studied. Planktonic cirripede larvae were found in the area studied from late March at a temperature of −1–0°C until October. The highest density of 18 000 m−3 was observed in mid-April. Balanus crenatus and Semibalanus cariosus were the dominant species, Chthamalus dalli and Balanus balanus larvae being less abundant. Naupliar density was maximal at 0–5 m and decreased with depth. Maximum densities of B.crenatus larvae were observed in Rakovaya Bay, where there are many ships and a seawater-cooled power station. Most nauplii of the intertidal barnacle S.cariosus, which prefers wave-exposed open coast, were taken in the Avacha Inlet narrows Settling on artificial substrata was most intensive from late May to early June

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Authors

  • Olga M. Korn

  • Valentina A. Kulikova

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