Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
a Effect of flow rate used for worm trapping in the tapered neck (Supplementary Table 3). b Effect of worm suspension volume (Supplementary Table 4). The density of animals in the culture bag was 1060 ± 160 adults/mL. Error bars represent standard deviation.