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kellytroyweek7essay - Ecologically important protozoan...

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Ecologically important protozoan zooplankton groups include the foraminiferans, radiolarians and dinoflagellates. Important metazoan zooplankton include cnidarians such as jellyfish and the Portuguese Man o' War; crustaceans such as copepods and krill; chaetognaths ; mollusk’s such as pteropods; and chordates such as salps and juvenile fish. This wide phylogenetic range includes a similarly wide range in feeding behavior: filter feeding, predation and symbiosis with autotrophic phytoplankton as seen in corals. Zooplankton feed on bacterioplankton, phytoplankton, other zooplankton (sometimes cannibalistically), detritus (or marine snow) and even nektonic organisms. As a result, zooplanktons are primarily found in surface waters where food resources (phytoplankton or other zooplankton) are abundant. Crustaceans- include shrimp, copepods, euphausiids ("krill") Characteristics: Copepods, euphausiids and shrimp superficially resemble one another. All have: exoskeletons of chitin,
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