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Books > Science & Mathematics > Biology, life sciences > Zoology & animal sciences > Invertebrates
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Pleistoannelida, Errantia II (Hardcover)
Loot Price: R8,162
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Pleistoannelida, Errantia II (Hardcover)
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This book is the fourth in a series of 4 volumes in the Handbook of
Zoology series about morphology, anatomy, reproduction,
development, ecology, phylogeny and systematics of Annelida. It
covers the most typical polychaetes, Phyllodocida, together with
certain smaller taxa placed incertae sedis. This volume completes
the polychaetous Annelida. Phyllodocida are often vagile, possess
well-developed parapodia. Due to their broad and flat cirri these
parapodia look like leaves in some taxa and leading to the name of
the entire group. Many of its members are macrophagous and often
predators. Accordingly most species possess elaborate sense
structures such as sensory palps, antennae, eyes and nuchal organs.
In certain species the eyes comprise thousands of photoreceptor
cells and lenses most likely allowing forming true images.
Phyllodocida typically possess an axial muscular pharynx called
proboscis functioning as a kind of suction pipe allowing them to
swallow and ingest their prey or other food. This pharynx may be
armed with cuticular jaws and some species even possess venom
glands. The probably most popular and important polychaete model
organism, Platynereis dumerilii, belongs to this interesting group.
Phyllodocida fall into two to three higher clades comprising about
25 families which represent more than one fourth of the polychaete
diversity. One of these families, Syllidae, comprises about 700
valid species of mainly small size and may, therefore, represent
one of the most complex and somehow difficult polychaete families
on Earth.
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