biological weed control | Ag Data Commons

Data from: High genetic diversity in the landscape suggests frequent seedling recruitment by Euphorbia virgata Waldst. & Kit. (leafy spurge) in the northern U.S.A.

Site information and field-collected data from a 1-year 100-site survey of leafy spurge (Euphorbia virgata/esula) populations in the northern U.S. Data include: 1) estimates of leafy spurge density and relative prevalence of ramets versus genets; 2) the abundance and composition of Aphthona species complex biological control agents; 3) presence/absence of two additional biological control agents (Oberea erythrocephala and Hyles euphorbiae).

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Data from: Fitness and host use remain stable in biological control agent after many years of hybridization

This data was generated to test how hybridization of an introduced insect biological control agent impacts host use. The data characterize the species composition of individual *Diorhabda spp.* collected across New Mexico and Texas, USA. Species composition of each individual was determined using genomic methods and Structure. Lab reared colonies were tested for host specificity, by measuring feeding preference in 24-hour feeding tests and measuring frass deposited below three host plants. Data on several attributes were also collected, including body mass, fecundity during the 24-hour feeding trial, and oviposition preference. The larval offspring of these individuals were also reared in families for 12 days on the three host plants and larval survival and mass were measured to quantify larval performance on the hosts.

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Data from: Conditions to terminate reproductive diapause of a univoltine insect: Ceratapion basicorne (Coleoptera: Apionidae), a biological control agent of yellow starthistle

The data are the number and proportion of female weevils (Ceratapion basicorne) that oviposited after exposure to three different environmental hibernation conditions for three different durations (4, 8 and 11 weeks). The conditions were Greenhouse [ambient temperature and photoperiod], glass door Refrigerator [5°C and ambient photoperiod], and incubator [5°C and 24 h dark]).

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Data from: Topical application of synthetic hormones terminated reproductive diapause to facilitate rearing of a univoltine weevil for weed biological control agent

These are results of a series of laboratory experiments to determine if topical application of methoprene and 20-ecdysone can terminate reproductive diapause of the weevil, Ceratapion basicorne, which is a recently permitted biological control agent of yellow starthistle (Centaurea solstitialis).

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Data from: Evolution of life history and dispersal traits during the range expansion of a biological control agent

This data was collected as part of a study on how *Diorhabda carinulata*, the biological control agent for the invasive weed tamarisk or saltcedar, has evolved during its rapid and recent range expansion.

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Data from: Release and establishment of the weevil Mecinus janthiniformis for biological control of Dalmatian toadflax in southern California

We monitored populations of the stem weevil, Mecinus janthiniformis, the invasive alien weed Dalmatian toadflax (Linaria dalmatica) and other vegetation to document the impact of using M. janthiniformis as a biological control agent of L. dalmatica. Weevils were released in 2008 and again in 2014 after a wild fire. The results document increases and spread of weevil populations, decrease in Dalmatian toadflax and changes in cover of some vegetation classes.

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