Portal de Periódicos da CAPES

INSECT COMMUNITY STRUCTURES OF BIRD'S – FOOT TREFOIL (LOTUS CORNICULATUS L.) INFLORESCENCES ALONG THE SEED DISPERSAL

2014; AcademicPres; Volume: 71; Issue: 2 Linguagem: Inglês

10.15835/buasvmcn-agr

2457-1385

A. M. Vîrteiu, Ioana Grozea, Ramona Ștef, Alin Cărăbeț, Teodora FLORIAN, S. Damianov,

Research on scale insects

Bird's -foot trefoil (Lotus corniculatus L.) is an abundant Fabaceae species of grassland, which is also used as forage plants.Lotus corniculatus is an indeterminate lowering herbaceous perennial that, through the vegetative season, produces a great number of in lorescences.A long lowering period is a major factor limiting seed production in this plant.Despite the fact that these periods of lowering and seed dispersal are relatively short, the in lorescences at this period host the most abundant insect fauna.This present study was carried out with the objective to identify the commonly occurring insect's fauna and workout their abundance, diversity, habitat and food in Lotus corniculatus crop ield from Banat (Timis, Romania): only Heteroptera are discussed.Insects were collected at monthly interval from May 2010 to September 2012 between 7.00 to 10.00 a.m.Extensive investigation was carried out in two localities, Timișoara and Gătaia, where 25 species of Heteroptera were identi ied in 29 samples containing 478 specimens.Miridae family was numerically the most abundant families constituting of 44.14% of all insects collected.Orius niger and Orius minutes is mentioned for the irst time in the fauna of West Romania, as predators consuming thrips.The examined material includes six species of Heteroptera: Xylocoris galactinus Fieb., Cymus melanocephalus Ham., Geocoris grylloides L., Lioceris tripustulatus F., Orthops basalis, Orthops campestris L. that are relatively new for the fauna of Banat Region.Species diversity and evenness indices luctuated from month to month and from one sampling site to other, and its abundance increases with the decreasing altitude of the locality.