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Related Experiment Video

Updated: Jul 11, 2026

Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes

Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes

Published on: September 4, 2016

Bacterivory: a novel feeding mode for asteroid larvae.

R B Rivkin, I Bosch, J S Pearse

Science (New York, N.Y.)

|September 19, 1986

Summary

Antarctic planktotrophic larvae beneath sea ice consume bacteria and organic solutes, not phytoplankton. This feeding behavior suggests their development may not depend on phytoplankton blooms, especially in nutrient-limited Antarctic waters.

Area of Science:

Marine biology
Polar science
Larval ecology

Background:

Planktotrophic larvae are crucial in marine ecosystems.
Antarctic sea ice environments present unique challenges for larval development.
Phytoplankton blooms are a primary food source for many marine larvae.

Purpose of the Study:

To investigate the feeding preferences of Antarctic planktotrophic larvae.
To determine the role of bacteria and organic solutes in larval nutrition.
To assess the relationship between larval development and phytoplankton production in Antarctic waters.

Main Methods:

Analysis of larval gut contents.
Stable isotope analysis to trace food sources.
Observation of larval feeding behavior in situ and in laboratory settings.

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The Ingestion of Fluorescent, Magnetic Nanoparticles for Determining Fluid-uptake Abilities in Insects

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Published on: December 20, 2017

Live-Cell Imaging of the Life Cycle of Bacterial Predator Bdellovibrio bacteriovorus using Time-Lapse Fluorescence Microscopy

Live-Cell Imaging of the Life Cycle of Bacterial Predator Bdellovibrio bacteriovorus using Time-Lapse Fluorescence Microscopy

Published on: May 8, 2020

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Last Updated: Jul 11, 2026

Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes

Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes

Published on: September 4, 2016

The Ingestion of Fluorescent, Magnetic Nanoparticles for Determining Fluid-uptake Abilities in Insects

The Ingestion of Fluorescent, Magnetic Nanoparticles for Determining Fluid-uptake Abilities in Insects

Published on: December 20, 2017

Live-Cell Imaging of the Life Cycle of Bacterial Predator Bdellovibrio bacteriovorus using Time-Lapse Fluorescence Microscopy

Live-Cell Imaging of the Life Cycle of Bacterial Predator Bdellovibrio bacteriovorus using Time-Lapse Fluorescence Microscopy

Published on: May 8, 2020

Main Results:

Larvae preferentially ingest bacteria and assimilate organic solutes.
Phytoplankton are actively excluded from the larval diet.
Larval growth and development are independent of phytoplankton availability.

Conclusions:

Antarctic planktotrophic larvae have adapted to utilize alternative food sources.
Bacterial production and dissolved organic matter are key nutritional resources for these larvae.
Larval ecology in the Antarctic is not solely driven by phytoplankton dynamics.