Resumen

ZAMBRANO MERO, Jessica Daniela et al. Biological cycle and reproductive performance of the rice stink bug (Oebalus insularis Stal.) in four host species. Siembra [online]. 2024, vol.11, n.2, e5983. ISSN 2477-8850.  https://doi.org/10.29166/siembra.v11i2.5983.

The rice stink bug (O. insularis) is an economically important pest that affects the plant during its reproductive phase, causing direct and indirect damage. This insect can thrive in different hosts, favoring its population growth and field persistence. This research determined the biological cycle and reproductive performance of O. insularis in four host grasses: Oryza sativa L, Echinochloa colona L, Echinochloa crus - galli L and Cynodon dactylon L. Results showed that the biological cycle of O. insularis was shortest when it C. dactylon was the host, with a period of 25,8 days from egg stage to adult emergence. Statistical differences were presented from instar III favored by C. dactylon (3,30 a ± SD 0,68), instar IV represented by O. sativa (2,80 a ± SD 0,42), and E. crus - galli (3,70 ab ± SD 0,95) and instar V determined by C. dactylon (3,40 a ± SD 0,84) and E. crus - galli (3,70 a ± SD 0,68). The highest number of eggs per oviposition was obtained with O. sativa and C. dactylon (16,07 a ± SD 4,01; 14,89 ab ± SD 1,83 respectively). The alternate hosts studied are key to the insect's field persistence, and to manage its population, it is recommended to study their role in the pest's ecology in rice cultivation.

Palabras clave : Hemiptera; Pentatomidae; plague; alternate hosts; biology.

        · resumen en Español     · texto en Español     · Español ( pdf )