Campanularia hydrozoan. Polarised light micrograph of a hydroid colony of Campanularia polyps. The branches of the stem give rise to either feeding polyps (hydranths,one at bottom centre) surrounded by a cup (hydrotheca),or reproductive polyps (one at left and one at right) in a closed flask (gonotheca). The reproductive polyps bud off circular medusae (young polyps),which are either male or female. The mature medusae are then liberated into the sea. The large gonotheca at left is breaking open and releasing medusae. Magnification: x36 when printed at 10 centimetres across | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wheeler, Dr. Keith |
Bildgröße: | 5616 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |