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Pseudobiceros bedfordi (Laidlaw 1903)

Persian Carpet Flatworm

Cheryl Tan Kay Yin (2013)

 

 

Fact Sheet

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Summary


Physical Description


Ecology


Life History & Behaviour


Locomotion


Phototaxis Experiment


Reproduction


Feeding & Nutrition


Anatomy & Physiology


Skeletal System


Sensory System


Muscular System


Digestive System


Internal Transport System


Evolution & Systematics


Biogeographic Distribution


Conservation & Threats


References & Links

Summary


Pseudobiceros bedfordi , also known as the Persian Carpet Flatworm , belongs to the Turbellaria clade; a group of free-living flatworms characterised by a soft, dorso-ventrally flattened body. They are found exclusively in shallow tropical waters of the Indo-Pacific region occasionally coming out from beneath boulders to swim over the sandy substrate on reef flats and lagoons on Heron Island.

 As nocturnal feeders, they come out at night to feed on ascidians and small crustaceans using their muscular pharynx while they spend the day beneath boulders and in rock crevices.

Their movement away from sunlight is known as negative phototaxis and to test if P. bedford demonstrates this behaviour, a simple experiment was conducted to examine the response of P. bedfordi to light exposure using 3 light colours( red, green, white) to simulate varying wavelengths.



Figure 1. Pseudobiceros bedfordi swimming in a twisted motion


Figure 2. Dorsal view of Pseudobiceros bedfordi

Classification

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Kingdom
Animalia
Phylum
Platyhelminthes
Class
Rhabditophora
Order
Polycladida
Family
Pseudoceritidae