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^: *http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1445-6664 /issues (http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1445-6664/ issues)
^: Minoru Ichihara; Hidehiro Inagaki ; Kazuo Matsuno; Chieko Saiki; Masayuki Yamashita; Hitoshi Sawada
^: Postdispersal seed predation by Teleogryllus emma (Orthoptera: Gryllidae) reduces the seedling emergence of a non-native grass weed, Italian ryegrass (Lolium multiflorum) [ (Lolium multiflorum) Teleogryllus emma (Orthoptera: Gryllidae)]
^: Weed Biology & Management, 2012; Vol.12,N 3. - P. 131-135
^: 2012
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^: The potential impact of postdispersal seed predation by the field cricket, Teleogryllus emma (Ohmachi et Matsuura), on the seedling emergence of Italian ryegrass (Lolium multiflorum Lam.), a non-native grass weed in Japan, was determined. The relationship between cricket density and the proportion of seedling emergence was investigated by conducting manipulative experiments in duplicate, using enclosures. One-thousand seeds of Italian ryegrass were exposed to adult crickets at different densities (zero, one, two, four and eight individuals per 2.25 m2 enclosure) for 2 weeks. The proportion of seedling emergence decreased with increasing cricket density. The proportion of seedling emergence in the enclosures without the crickets was 90.9-97.2%, whereas the seedling emergence in the enclosures with eight crickets greatly decreased, to 0.5-2.5%. These results suggest that postdispersal seed predation by T. emma can substantially decrease the abundance of Italian ryegrass at an early life stage and reduce its population in environments with a high density of crickets. aref1

^TRN: 1440322
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