Diet and growth parameters of the zoophytophagous predator Engytatus varians (Hemiptera: Miridae)
2019
Palma-Castillo, Luis Jesús | Mena-Mociño, Laura Verónica | Martínez, Ana Mabel | Pineda, Samuel | Gómez-Ramos, Benjamín | Chavarrieta-Yáñez, Juan Manuel | Figueroa, José Isaac
Engytatus varians (Distant) (Hemiptera: Miridae) was observed to prey on eggs and nymphs of the tomato psyllid Bactericera cockerelli (Sulc.) (Hemiptera: Triozidae) on tomato plants, Solanum lycopersicum L., in Tarímbaro, Michoacán, Mexico, in 2014. In the present study, several growth parameters of this predator were assessed under three different diets (second-third [N₂-N₃] instars of B. cockerelli + eggs of the grain moth, Sitotroga cerealella Olivier [Lepidoptera: Gelechiidae] + 5% sugar solution; N₂-N₃ instars of B. cockerelli + S. cerealella eggs; and N₂-N₃ instars of B. cockerelli alone). In females, among the three diet groups, the group fed N₂-N₃ instars of B. cockerelli + S. cerealella eggs + 5% sugar solution showed the highest longevity (46.6 ± 2.4 days), probability of survival (100% up to day 26), fecundity (180.5 ± 8.5 eggs/female), oviposition rate (OR, 3.9 ± 0.2 eggs/female/day), intrinsic rate of increase (rₘ, 0.118 ± 0.0001/female/day), net reproductive rate (R₀, 107.8 ± 0.2 female eggs/female), and mean generation time (T, 39.6 ± 0.01 days). Our results indicate that the sugar solution improved the physical conditions and population dynamics of E. varians and that sugar could be used to improve the rearing of this predator.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par National Agricultural Library
Découvrez la collection de ce fournisseur de données dans AGRIS