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Predator-Prey Interactions

Predator-Prey Interactions

Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.

Fixed Action Patterns

Fixed Action Patterns

A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.

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Related Experiment Video

Updated: Dec 16, 2025

Long-term Behavioral Tracking of Freely Swimming Weakly Electric Fish

Long-term Behavioral Tracking of Freely Swimming Weakly Electric Fish

Published on: March 6, 2014

Visual Attack on the Moving Prey by Cuttlefish.

José Jiun-Shian Wu¹, Arthur Hung^1,2, Yen-Chen Lin^1,3

¹Institute of Systems Neuroscience, National Tsing Hua University, Hsinchu, Taiwan.

Frontiers in Physiology

|July 7, 2020

Summary

This summary is machine-generated.

Cuttlefish flexibly use visual tactics to capture moving prey. They track prey by matching speed and adjusting tentacular strikes, demonstrating sophisticated sensorimotor integration.

Keywords:

DeepLabCut Sepia pharaonis sensorimotor integration tentacular strike visual prediction

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Last Updated: Dec 16, 2025

Long-term Behavioral Tracking of Freely Swimming Weakly Electric Fish

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Published on: March 6, 2014

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Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes

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Published on: September 4, 2016

Area of Science:

Marine Biology
Animal Behavior
Neuroscience

Background:

Cuttlefish prey capture involves attention, positioning, and seizure.
Visual attack on stationary prey is understood, but on moving prey is not quantitatively analyzed.
Accurate sensorimotor integration is crucial for visually guided prey capture.

Purpose of the Study:

To quantitatively analyze the kinematics of cuttlefish visual attack on moving prey.
To investigate the visual tactics employed by cuttlefish when hunting mobile targets.

Main Methods:

Utilized a servomotor system for controlled shrimp prey movement.
Employed high-resolution imaging and DeepLabCut for predator-prey interaction analysis.
Quantitatively examined cuttlefish predatory behavior kinematics.

Main Results:

Cuttlefish primarily use body movement to visually track moving prey.
Predators matched prey speed before initiating tentacular strikes.
Cuttlefish demonstrated predictive capabilities, compensating for sensorimotor delays or adjusting strike trajectories based on prey movement.

Conclusions:

Cuttlefish flexibly employ diverse visual tactics for capturing moving prey.
They extract crucial direction and speed information from moving targets for accurate attacks.
This study reveals sophisticated sensorimotor control in cuttlefish predatory behavior.