Thoracostraca. Astacus fluv. I
Description
PANARTHROPODA,
Phylum Arthropoda
Subphylum Crustacea
Malacostraca
Decapoda
Astacus fluviatilis
1) External morphology: antennules, antennae; rostrum; compound stalked eyes. 5 pairs of walking legs, the first 3 pairs of which with terminal chelae. Pleon with a caudal posterior “fan”.
The internal structure can be seen after the removal of carapace: stomach, gut; digestive gland; heart with ostia, anterior and posterior aorta; gills; ovary; ventral ganglionic cord.
2) Mouth (o), cardiac and pyloric stomach. Circulatory system with heart and gill vessels.
3) A detail of the stomach showing the chitinous gastric mill with teeth.
People
Pfurtscheller, Paul (Author)
Michelon, Nicola (Digitiser)
Castelli, Stefano (Digitiser)
Biblioteca Vallisneri - Università di Padova (Digitiser)
Format
image/jpeg (951.12 kB)
wallchart
Subject
• Tavola didattica
Object languages:
LatinSources
• Cassettiera A - 2
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