Riqueza del complejo chisa (Coleoptera: Melolonthidae) en cuatro agroecosistemas del Cauca, Colombia
Resumen
Abstract
Richness of the white-grub complex (Coleoptera: Melolonthidae) in agroecosystems of the Cauca province, Colombia. The composition and variation in the richness of the complex of rhizophagous Melolonthidae larvae was examinated in four agroecological zones in the Municipality of Caldono (1400-1500 m, 21.5ºC, average rainfall 2000 mm/yr) with complementary surveys in the neighbouring site of Buenos Aires, Cauca. Half-hectare plots (cassava, pastures, coffee and wooded areas) were selected and visited every 15 days (total of 15 visits per plot), and a total of 10 samples were taken (1 m2 by 15 cm deep). In total, 10,261 larvae of 32 species were collected: Phyllophaga, Plectris, Astaena, Macrodactylus, Ceraspis, Barybas, Isonychus, Anomala Callistethus, Strigoderma, Leucothyreus, Cyclocephala. The richness of species varied significantly among sites (F=87.24; p =2.72-18), samples (F=22.29; p=5.18-13), plots (F=23.39; p=1.40-13). In most cases, the average rates for richness were: pastures (3.6), cassava (4.5), coffee (2.11) and wooded areas (2.2). They all had substantial fluctuations, which accounts for the differences. The isodensity curves for each plot are presented and discussed.
Key words: Melolonthidae, rhizophagous, larvae, Coleoptera. Cauca, Colombia
Palabras clave
Enlaces refback
- No hay ningún enlace refback.