期刊论文详细信息
PeerJ
Difference on cone size preferences between two coniferous species by Great Spotted Woodpecker ( Dendrocopos major )
article
Łukasz Dylewski1  Reuven Yosef2  Łukasz Myczko1 
[1] Institute of Zoology, Poznań University of Life Sciences;Eilat Campus, Ben-Gurion University of the Negev
关键词: Pre-dispersal seed predation;    Phenotypic selection;    Norway spruce;    Great Spotted Woodpecker;    Anvils;    Scots pine;   
DOI  :  10.7717/peerj.3288
学科分类:社会科学、人文和艺术(综合)
来源: Inra
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【 摘 要 】

The number of species that specialize in pre-dispersal seed predation is relatively small. Examples of specialized pre-dispersal seed predators adapted to feeding on closed cones include vertebrate species like Crossbills, Squirrels, Nutcrackers and Woodpeckers. Seed predation selects against certain phenotypic features of cones and favors another phenotypic features. In this study, we document preferences of the Great Spotted Woodpecker (Dendrocopos major) for specific traits in the cones of Norway spruce (Picea abies) and Scots pine (Pinus sylvestris). We found that the Great Spotted Woodpecker prefers to feed on medium sized Norway spruce cones. The results suggest a disruptive selection that favors the extreme cone lengths in Norway spruce. In Scots pine, the woodpeckers avoided cones with large apophyses. Further, the selectivity for the specific characteristics of the cones is probably related to the configuration of the anvil, a place at which woodpeckers extract seeds from the cones. We think that the Great Spotted Woodpecker preferences in relation to the morphological characteristics of cones are a key to the design of the anvil in order to maximize the use of it as a tool for processing cones of both the Norway spruce and the Scots pine.

【 授权许可】

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