Molecular detection of field predation among larvae of two ladybird beetles is partially predicted from laboratory experiments.

ABSTRACT: Despite the fact that natural enemies can synergistically contribute to herbivore pest suppression, sometimes predators engage in intraguild predation (IGP) that might dampen trophic cascades. DNA-based gut-content analysis has become common in assessing trophic connections and biocontrol potential by predators in field systems. Here, we developed a molecular technique that can be used to unravel predation among two ladybirds, Coccinella septempunctata and Hippodamia variegata, and their shared prey, Aphis gossypii. Both ladybirds may provide effective control of the pest. Therefore, understanding their likelihood to engage in IGP is crucial for conservation biological control. Ladybird specimens were collected in melon crop. DNA extraction, primer design and evaluation were conducted. Det

SUBMITTER: Rondoni G 

PROVIDER: S-EPMC5803220 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature