DIVERSITY OF ARTHROPODS IN NATURAL PASTURES UNDER WATER STRESS IN THE DISTRICT OF MAÑAZO, PUNO, PERU

Salvatierra-Maza L.I.; Joyo-Coronado G.; Beyer-Arteaga A.; Zela Apaza A.M. · Ecologia Aplicada (2026) · DOI: 10.21704/rea.v24i2.2384

Resumen

Natural pastures are important for livestock farming at high altitudes, and the presence of arthropods has a considerable impact on these plant species. The objective of this study was to determine the arthropods diversity associated with natural pastures under water stress in four fields located in the localities of Quinsa Chacjua, Qearaya, Cari, and Jatunmayo, respectively. Three assessments were conducted in January, March, and April 2016. In each sampling, five 1 m2 units were randomly selected from each field, in which arthropods were collected manually. A net was used in each field for five minutes. Samples of plant species were collected for subsequent determination. Collected arthropods were determined to family level, and only a few specimens to genus level. Most plant species were determined to genus level. Macroinvertebrate community collected at the landscape level (in the four fields) was classified into 13 orders and 82 families of arthropods, with a total of 1,402 individuals. The predominant family was Miridae, followed by Lonchaeidae, Cicadellidae, and Tenebrionidae. According to the estimators used (ACE, ICE, Chao 1, Chao 2, Jack 1, Jack 2, and Bootstrap), a good sampling efficiency of 74.34% was obtained. According to the assessment, Niño-Southern Oscillation altered the composition of arthropod abundance mainly due to precipitation conditions in families Pyralidae, Muscidae, Lygaeidae, and Tephritidae. Among the plant species identified, families Poaceae and Asteraceae are the most frequent in the fields evaluated, and genus Festuca is common in areas 1 and 2. © Departamento Académico de Biología, Universidad Nacional Agraria La Molina, Lima – Perú.

Instituciones: Universidad Nacional Agraria La Molina