Brynja Hrafnkelsdóttir, Edda S Oddsdóttir, Gudmundur Halldórsson
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引用次数: 0
Abstract
The distribution of Ceramica pisi has been expanding in Iceland after 1990, concurrent with a recent rise in mean annual temperature. A previous study showed that the winter survival of C. pisi is primarily related to pupal mass. We monitored the development of C. pisi larvae over cool, mild, and warm summers in southern Iceland and calculated the total mass-related survival of C. pisi larvae/pupae through pupation and winter. A significant positive relationship was found between a) summer growing degree days and the proportion of larvae that reached critical mass for winter survival, and b) larval mass and likelihood of pupation. We conclude that increased summer temperature is the primary cause of the distribution range shift of C. pisi in Iceland, and this has facilitated increased population density of the species, in combination with increased availability of food resources due to host shift over to Nootka lupin.
期刊介绍：
Icelandic Agricultural Sciences is published annually, or more frequently. The deadline for submitting manuscripts that are intended to appear within that year is September. The journal is in English and is refereed and distributed internationally. It publishes original articles and reviews written by researchers throughout the world on any aspect of applied life sciences that are relevant under boreal, alpine, arctic or subarctic conditions. Relevant subjects include e.g. any kind of environmental research, farming, breeding and diseases of plants and animals, hunting and fisheries, food science, forestry, soil conservation, ecology of managed and natural ecosystems, geothermal ecology, etc.
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