The influence of agroclimatic factors on the abundance of Anastrepha ludens and A. obliqua (Diptera: Tephritidae), in “Barranqueño” mango (Mangifera indica).

Abstract The objective of this research was to evaluate the influence of agroclimatic factors on the abundance of Anastrepha ludens and A. obliqua, in orchards of creole “Barranqueño” mango (Mangifera indica) in the municipalities of Amatitán, San Cristóbal de la Barranca, and Tequila (Jalisco, Mexico). Eighty-four multilure traps were established to sample specimens from May to September 2021.The most abundant species was A. ludens (98.7%). The greatest abundance of A. ludens occurred during June and July in all the municipalities, while for A. obliqua it was in June. The index of flies captured per trap per day had values greater than 0.010, which showed that the study area has a high prevalence of the pest. There is a significant correlation (P-value = 0.001) between the abundance of A. ludens with precipitation (19.30-260.60 mm) and minimum temperature (16.7–22.20°C). The abundance of A. obliqua was very low (504 individuals in total) and did not correlate with any variable. The altitude range (842-1151.75 m asl) of the study area explains the differences in the abundance of these species. These results are evidence that precipitation and the survival of adults of these species, does not have a cause-effect relationship, and that population fluctuations among both Anastrepha species may be correlated with altitude.