Larval gut content feeding assay (Pieridae)

Knowledge graph centered on Larval gut content feeding assay (Pieridae) with 55 nodes and 176 connections. Top connected: Ligusticum porteri, Lepidoptera, Bacteria, aquatic insects, Boechera stricta.

Method synopsis

A controlled feeding experiment where individual first instar larvae are offered different plant species and their gut content accumulation is monitored over time through categorical and quantitative assessments.

Synthesized from method descriptions across 2 papers using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Pre- and post-ingestive defenses affect larval feeding on a lethal invasive host plant (2019), Entomologia Experimentalis et Applicata. The protocol was originally introduced by Larval feeding behavior and leaf components that affect the survival of <i>Pieris macdunnoughii</i> on the invasive mustard <i>Thlaspi arvense</i> (2016). Implementations in other papers (listed below) may differ.

1. Laboratory leaf preparation
   Newly hatched larvae placed individually on entire excised leaves in 45-mm-diameter Petri dishes lined with moist filter paper. Used leaves with no visible signs of previous abiotic or biotic damage. Each leaf photographed from fixed distance alongside red calibration square before and after 6-h trial using Leica S6D Greenough stereomicroscope at 2, 4, and 6 h intervals
   Quantities: 237 larvae total across trials, 45-mm-diameter Petri dishes, individual larvae per dishDuration: 6 hours total trial time with observations at 2, 4, and 6 hConditions: Growth chamber conditions, moist filter paper
   Equipment: 45-mm-diameter Petri dishes, moist filter paper, Leica S6D Greenough stereomicroscope, red calibration square

Typical Equipment

• collection containers
• plant cutting tools
• feeding containers
• microscope or magnification equipment
• measurement tools
• calculation software

Output Measurements

• gut content category
• relative gut content
• larval survival

Papers Using This Protocol (2)

Species Studied With This Protocol