Description, Biology, Life Cycle, Damage, Common Names, Images
- It attacks principally cereals, artichoke, witloof chicory, lettuce and chicory.
- The populations follow an annual cycle over which a infestation cycle may be superimposed. The cycle is mimimal after winter, rising rapidly in May-June and maximal in September-October. A precocious start to reproduction in spring and a relatively high population level by the end of winter indicate high infestation potential.
- Infestation cycle in 4 phases: low density (2 to 3 years; 0.
to 10 ind/ha); growth (1 to 2 years); high density (1 to 4 years; 1200 ind/ha); decline (1 to 2 years).
- Lifespan: 6 months.
- Elevated reproduction rate: 3 to 6 annual litters of 4 to 5 youngsters per female.
- Habitat (*) : in holes, forming burrows (diameter: 3.5 cm) with many large openings connected to the surface by outflows where droppings are deposited (*) .
- It feeds on herbaceous plants or seeds found on the surface.
On the aerial parts of cereals, lucerne fields, seed crops, meadows.
In orchards, the base of trunks is gnawed.
Potential vector of human or animal diseases.
HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.