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Università degli Studi di Padova

PHAIDRA – Digital collections



Thoracostraca. Astacus fluv. I

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.

Format


image/jpeg (951.12 kB)
wallchart

Subject


• Tavola didattica

Object languages:

Latin

Sources


• Cassettiera A - 2

Rights:

Creative Commons License
This work is licensed under a Creative Commons CC BY-NC-SA 4.0 License.