TABLE 1.
Summary of in vitro and in vivo trophic measurements
| Consumera | Diet typea | TDFglu-pheb | TPexpectedb | TPglu-pheb |
|---|---|---|---|---|
| In vitro growth conditions | ||||
| None | Yeast-soy lipid agar (YE-YS) | NA | 1.0 | 1.0 |
| Xenorhabdus | Yeast-soy broth (YE-YS) | 6.53 | 2.0 | 1.9 |
| Steinernema (adults) | Xenorhabdus on yeast-soy lipid agar (YE-YS) | 6.96 | 3.0 | 2.9 |
| Steinernema (IJs) | Xenorhabdus on yeast-soy lipid agar (YE-YS) | 8.02 | 3.0 | 3.0 |
| In vivo growth conditions | ||||
| None | Galleria (base of food chain) | NA | 2.0 | 2.2 |
| None | Galleria + PBS buffer (positive control) | NA | 2.0 | 2.2 |
| None | Yeast-soy broth (YE-YS) | NA | 2.0 | 2.2 |
| Xenorhabdus (measured as Galleria-Xenorhabdus complex) | Galleria | NA | 2.5 | 2.5 |
| Steinernema IJs | Galleria-Xenorhabdus complex | NA | 3.5 | 4.6 |
a
Each organism in the ecosystem was assessed for its trophic position as a consumer under controlled in vitro conditions or in vivo within an insect cadaver. None indicates that the condition tested was diet only, no consumer.
b
Individual trophic discrimination factors (TDF), expected trophic positions (TPexpected), and measured TP (TPglu-phe) are given for each consumer diet. NA, not applicable.