Copepod

Copepod

Copepods are a group of small crustaceans found in the sea and nearly every freshwater habitat. They are members of the subphylum Crustacea (class Copepoda), which includes about 13,000 species distributed worldwide.

Description

Copepods are typically 1 to 2 mm long, with a teardrop-shaped body and large antennae. Despite their small size, their abundance makes them a significant part of the marine ecosystem. They are a primary food source for many fish and whale species.

Classification

Copepods are divided into ten orders, but the three most significant are Calanoida, Cyclopoida, and Harpacticoida. These orders are distinguished by the structure of their antennae and the presence or absence of a dorsal hump.

Life Cycle

The life cycle of a copepod typically includes a series of molts as the animal grows and matures. The stages of development include the nauplius stage, followed by the copepodid stage, and finally the adult stage.

Ecological Role

Copepods play a crucial role in the marine food chain. They consume phytoplankton and are a primary food source for many fish species. They also contribute to the carbon cycle by consuming carbon in the form of phytoplankton and releasing it as waste, which then sinks to the ocean floor.

Human Impact

Copepods have been used in aquaculture as a food source for farmed fish and shrimp. They are also used in biological control efforts to reduce mosquito populations by consuming mosquito larvae.

See Also

• Crustacean
• Marine Ecosystem
• Aquaculture
• Biological Control

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