Data from: Insect herbivory on native and exotic aquatic plants: phosphorus and nitrogen drive insect growth and nutrient release ...

• Main Authors: Grutters, Bart M. C., Gross, Elisabeth M., Bakker, Elisabeth S.
• Format: Dataset
• Language: English
• Published: Dryad 2017
• Subjects: Ceratophyllum demersum; Potamogeton pusillus; Cabomba caroliniana; invasive plants; Myriophyllum aquaticum; Ranunculus circinatus; Aquatic caterpillar; Parapoynx stratiotata; Myriophyllum spicatum; Elodea nuttallii; Water brownification; Potamogeton lucens; Myriophyllum verticillatum; Chara contraria; Myriophyllum heterophyllum
• Online Access: https://dx.doi.org/10.5061/dryad.8ct25; https://datadryad.org/stash/dataset/doi:10.5061/dryad.8ct25

Eutrophication and globalisation facilitate the dominance of exotic plants in aquatic ecosystems worldwide. Aquatic omnivores can provide biotic resistance to plant invasions, but little is known about whether obligate aquatic herbivores can do the same. Herbivores such as insects can decimate aquatic vegetation, but may not be able to consume exotic plants due to their more or less specialised nature of feeding. We experimentally tested the larval feeding of an aquatic insect, the moth Parapoynx stratiotata, on eleven submerged plant species, from either native or exotic origin. We also tested whether insect herbivory stimulates nutrient and organic matter release, thus affecting water quality. Larvae of P. stratiotata consumed seven out of eleven plant species, and their growth was related to plant nutrient content and stoichiometry. However, larvae had no preference for either native or exotic macrophytes, and their plant preference was not related to the measured plant traits, but was possibly driven by ... : Results of caterpillar feeding trialsThe results of the caterpillar (using Parapoynx stratiotata) feeding trials were conducted in the laboratory in the Netherlands and are located in a tab-separated text file. Respectively, column headings are: ID [= unique identifier of each record], species [= plant species fed upon by caterpillar], fresh biomass (g) [= initial plant mass offered to caterpillar], fresh biomass after (g) [= remaining plant mass], FWeaten (g) [= fresh plant biomass lost during feeding trial], 450nm [= spectrophotometric absorbance at 450 nm after experiment], TON [= oxidized nitrogen in water in mg/L], NH4 [= total ammonium in water in mg/L], PO4 [= o-phosphate in water in mg/L], NO2 [= nitrite in water in mg/L], FW caterpillar end (mg) [= final fresh weight of combined caterpillars in milligrams], P% [= plant phosphorus content in % of plant dry mass of plant remainder after feeding], C% [= plant carbon content in % of plant dry mass of plant remainder after feeding], N% [= plant nitrogen ...