Invertebrate Feeding Mechanisms

Macrophagous Invertebrates

• Macrophagous organisms include larger invertebrates such as some mollusks, echinoderms, and crustaceans.
• These invertebrates typically feed on larger food particles rather than microscopic ones.

Feeding Mechanism: Filtration

• The feeding mechanism that involves extracting food particles by filtering water is known as filter feeding.
• Organisms such as bivalves and certain sponges utilize this method to capture suspended particles.

Particulate Feeders

• Invertebrates that feed on very small particulate food material are referred to as microphagous organisms.
• These organisms target algae, bacteria, and other minuscule debris.

Diet of Macrophagous Feeders

• Macrophagous feeders typically consume larger organic matter, including detritus, plant material, and other invertebrates.
• This feeding strategy contributes to the nutrient cycling in ecosystems.

Fluid Feeders

• Fluid feeders generally suck fluid food, including nectar from flowers or blood from host organisms.
• Examples include certain insects like mosquitoes and parasitic worms.

Cilia and Setae Utilization

• Ciliated or setose invertebrates, such as various polychaete worms and certain protozoans, effectively use their extensions for obtaining food.
• These structures enable efficient movement and capture of food particles from the surrounding environment.