Insects from the grazing food web favoured the evolutionary habitat shift to bright environments in araneoid spiders.

Insects from the grazing food web favoured the evolutionary habitat shift to bright environments in araneoid spiders. Research Abstract Details 

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Insects from the grazing food web favoured the evolutionary habitat shift to bright environments in araneoid spiders. Abstract Text:

Tadashi Miyashita,Aya Shimazaki,

The Araneoidea comprises a diverse group of web-building spiders, and part of this diversity is believed attributable to habitat expansion to bright environments. We clarified the fitness-related advantages of living in such environments by examining prey availability and the growth rates of 10 species in three families inhabiting grassland (bright) and forest understory (dim) habitats. Spiders in the grassland habitat captured more prey, derived mainly from the grazing food web, than those in the forest-floor environment, and this difference was manifested in their growth rate. Independent contrasts indicated that increased utilization of insects from the grazing food web led to an evolutionary increase in adult body size. These results suggest that the shift to bright environments enabled araneoid spiders to evolve diverse life-history traits, including rapid growth and large size, which were not possible in dim environments.

Insects from the grazing food web favoured the evolutionary habitat shift to bright environments in araneoid spiders. Publishing Authors By Initials

T Miyashita,A Shimazaki,

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Insects from the grazing food web favoured the evolutionary habitat shift to bright environments in araneoid spiders. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Biology letters

VOLUME: 2

Page Numbers: 565-8

Journal Abbreviation: Biol. Lett.

ISSN: 1744-9561

DAY: 22

MONTH: Dec

YEAR: 2006

Insects from the grazing food web favoured the evolutionary habitat shift to bright environments in araneoid spiders. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Insects from the grazing food web favoured the evolutionary habitat shift to bright environments in araneoid spiders.

AFFILIATION: School of Agriculture & Life Sciences, University of Tokyo, Tokyo 113-8656, Japan. tmiya@es.a.u-tokyo.ac.jp

Country: England

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MEDLINETA: Biol Lett

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