Using endocarp-remains of seeds of wild apricot Prunus armeniaca to identify rodent seed predators

Current Zoology

关键词: Seed dispersal;    Seed predation;    Small rodents;    Stepwise Fisher discriminant analysis;   

DOI  :  

来源: DOAJ

【 摘 要 】

Some rodent-dispersed seeds have a hard seed-coat (e.g. woody endocarp). Specific scrapes or dental marks on the hard seed-coat left by rodents when they eat these seeds can be used to identify seed predators. In this study we measured the morphological traits of endocarp-remains of seeds of wild apricot Prunus armeniaca used by Chinese white-bellied rats Niviventor confucianusand Korean field mice Apodemus peninsulae. We established their Fisher′s linear discriminant functions to separate endocarp-remains between the two predators. A total of 90.0 % of the endocarp-remains left by Korean field mice and 88.0 % of those left by Chinese white-bellied rats were correctly classified. The overall percentage of correct classification was 89.0 %. One hundred and sixty endocarp-remains of unknown what species predated them were classified using the functions. The method may allow more reliable quantitative studies of the effects of Chinese white-bellied rats and Korean field mice on seed consumption and dispersal of wild apricot and this study might be used for reference in other studies of seed predators identification on hard seeds [Current Zoology 55 (6): 396 –400, 2009].

【 授权许可】

Unknown