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Larsson, Sofia, 2007. Bembidion spp. : condition and fecundity in relation to cropping system and landscape parameters. SLU, Dept. of Ecology, Uppsala. Uppsala: SLU, Dept. of Ecology



In this study the condition and fecundity of a genus of the polyphagous predator, Bembidion. is investigated in respect to landscape complexity and farming practice. The beetles where collected during 1999 from five pairs of conventional and organic farms in central east Sweden (in the area around Uppsala). The farms within each pair were situated close to each other and had similar size and landscape structure. The condition was measured as the percent fat in Bembidion captured during spring and fecundity was studied in laboratory were the amount of eggs were counted and the egg volume measured. On organic farms there were correlations between number of eggs and crop diversity and between eggs and landscape heterogeneity. On the conventional farms there were correlations between fat and landscape heterogeneity and also between fat and perimeter-to-area ratio. There was also a correlation between egg volume and perimeter-to-area ratio on conventional farms. The results indicate that it is possible to improve the condition and fecundity of Bembidion, and thereby increase the predation of pest aphids.

Main title:Bembidion spp.
Subtitle:condition and fecundity in relation to cropping system and landscape parameters
Authors:Larsson, Sofia
Supervisor:Ekbom, Barbara
Series:Självständigt arbete/Examensarbete / SLU, Institutionen för ekologi
Volume/Sequential designation:2007:6
Year of Publication:2007
Level and depth descriptor:Other
Student's programme affiliation:1010A Agriculture Programme (admitted before July 1, 2007) 270 HEC
Supervising department:(NL, NJ) > Dept. of Ecology
Keywords:Bembidion, landscape, organic farming, conventional farming, fat content, egg laying capacity
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Subject. Use of subject categories until 2023-04-30.:SLU > (S) > Dept. of Ecology
Cropping patterns and systems
Deposited On:13 Nov 2017 11:41
Metadata Last Modified:13 Nov 2017 11:41

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