ZOOPLANKTON AND LARVAL FISH COMMUNITY DEVELOPMENT : COMPARATIVE STUDY UNDER FIRST-YEAR SEA ICE AT LOW AND HIGH LATITUDES IN THE NORTHERN HEMISPHERE (16th Symposium on Polar Biology)

スポンサーリンク

概要

• 論文の詳細を見る

• We compared the development of the zooplankton community in relation to the ice-algal bloom in Saroma Ko lagoon and Resolute Passage in spring. In Saroma Ko, mysids and copepods were the dominant components of the zooplankton. Numerically, Pseudocalanus spp. represented more than 73% of the copepod assemblage. The constancy of Pseudocalanus stage composition and the low production of copepod eggs and nauplii indicated that ice algae in the lagoon did not stimulate the development of copepods in spring. During the sampling period, the colonization of Saroma Ko by the larvae of several species of marine fish coincided with low production of zooplankton prey in the lagoon. In Resolute Passage, the hyperiid amphipod Themisto libellula and the copepod Pseudocalanus acuspes dominated the zooplankton. The population of Pseudocalanus acuspes (78% of the copepod assemblage) evolved from a majority of overwintering CIV and CV copepodites in early May to a majority of females in late June. The production of eggs and nauplii increased over this period and started well before the massive release of ice algae or the phytoplankton bloom. This suggests that Pseudocalanus acuspes reproduction may be fuelled by endogenous reserves from the previous fall and/or the grazing of ice algae falling from the ice-cover. Few fish larvae were sampled in Resolute Passage, indicating that this area of strong advection is probably unsuitable for the reproduction of fish. Our results for Saroma Ko lagoon and Resolute Passage support the hypothesis that, in seasonally ice-covered seas, the importance of the ice-algal cycle to the maturation of Pseudocalanus increases with latitude.

• 国立極地研究所の論文

著者

• Fortier Louis

  University of Laval

• Fortier Martin

  University of Laval

• Fortier Louis

  Giroq Department Of Biology Laval University

• Fortier Louis

  Giroq Department De Biologie Universite Laval

• FORTIER Martin

  GIROQ, Departement de Biologic, Universite Laval

• DEMERS Serge

  Institut Maurice-Lamontagne, Ministere des Peches et des Oceans

• Demers Serge

  Institut Maurice-lamontagne 850 Route De La Mer:(present Adress)inrs-oceanologie

• Fortier Martin

  Giroq Department Of Biology Laval University

関連論文

• SARES (Saroma-Resolute Studies) プロジェクトにおける1992年2月ー3月のサロマ湖の生物学的観測資料 (英文)
• ZOOPLANKTON AND LARVAL FISH COMMUNITY DEVELOPMENT : COMPARATIVE STUDY UNDER FIRST-YEAR SEA ICE AT LOW AND HIGH LATITUDES IN THE NORTHERN HEMISPHERE (16th Symposium on Polar Biology)
• THE MICROBIAL FOOD WEB : COMPARATIVE STUDY UNDER FIRST-YEAR ICE AT LOW AND HIGH LATITUDES IN THE NORTHERN HEMISPHERE (16th Symposium on Polar Biology)
• TIDAL TRANSPORT AND RECRUITMENT OF MARINE FISH LARVAE TO ICE-COVERED SAROMA KO LAGOON (HOKKAIDO, JAPAN) (ABSTRACT) (16th Symposium on Polar Biology)
• Feeding success and survivorship of Arctic cod larvae, Boreogadus saida, in the Northeast Water polynya (Greenland Sea)
• BIOMASS AND BACTERIAL GRAZING ACTIVITY OF NANOPROTOZOAN AT THE ICE-WATER INTERFACE IN RESOLUTE PASSAGE (ABSTRACT) (16th Symposium on Polar Biology)

スポンサーリンク