Project

Flatworms

  • 99 Members
  • 319 Sightings
  • 0 Posts

The flatworms, known as Platyhelminthes are a phylum of fascinating, simple bilaterian, unsegmented, soft-bodied invertebrate animals. Unlike other bilaterians, they have no body cavity, and no specialized circulatory and respiratory organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. The digestive cavity has only one opening for both the ingestion and expulsions of undigested wastes) -this means that food cannot be processed continuously. Platyhelminthes are divided into Turbellaria, which are mostly nonparasitic animals such as planarians, and three entirely parasitic groups: Cestoda, Trematoda and Monogenea. Free-living flatworms are mostly predators, and live in water or in shaded, humid terrestrial environments such as leaf litter. We are fortunate to have as a member of BowerBird, Dr Leigh Winsor from the Jame Cook University at Townsville who is a free-living flatworm expert. Leigh is most keen for members to find and upload images of flatworms. He would also like from time to time for members to collected into alcohol flatworms they find which will be used in his DNA analysis of this difficult group of animals.

  • Matthew Connors described a sighting

    Sighting Another little striped flatworm - Anzoplana trilineata

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    1 ids
    4 notes
    0 disc.
    Sighted 10 Jul 2017
    Matthew Connors 9 February 2019
    Tagged With flooding
    Matthew Connors says

    Thanks for the additional information - the flooding here actually brought out the first flatworm I've seen in Queensland (although not in Townsville, in Coolbie)! I'll post some pictures of it when I get around to it in my backlog

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  • Dr Leigh Winsor described a sighting

    Sighting Another little striped flatworm - Anzoplana trilineata

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    1 ids
    4 notes
    0 disc.
    Sighted 10 Jul 2017
    Dr Leigh Winsor 8 February 2019
    Dr Leigh Winsor says

    Many thanks Matthew for the additional information on locations for this species and also the Caenoplana coerulea from near Beechworth. Land planarians are not uncommonly seen out by daylight, especially under overcast or wet conditions such as very heavy rainfall or flooding. Interestingly I have not found any land planarians driven out by floodwaters around my home in Townsville. IOt may be that the long hot dry spells we have had for the past five years was too much for the planarian populations to survive. Some appear to have got "caught out" coming home late from a night's hunting and I have found specimens that were out hunting on large bare surfaces such as concrete bridge pylons - when the sun rose, the moisture on the surface that facilitated movement dried, as did they. Others such as Fletchamia sugdeni with its bright yellow aposematic colour probably have repugnatorial or toxic secretions that make them unpalatable to potential predators and they are frequently found out and about on overcast days.

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  • Dr Leigh Winsor described a sighting

    Sighting Unknown red flatworm - Australopacifica sp. Only one photo unfortunately

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    1 ids
    1 notes
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    Sighted 12 Jul 2017
    Dr Leigh Winsor 4 February 2019
    Tagged With australopacifica sp
    Dr Leigh Winsor says

    Unfortunately, apart from the colour of what appears to be a damaged planarian, there are no strong characters such that I can confidently identify the specimen as an Australoplana sp.

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  • Matthew Connors described a sighting

    Sighting Another little striped flatworm - Anzoplana trilineata

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    1 ids
    4 notes
    0 disc.
    Sighted 10 Jul 2017
    Matthew Connors 4 February 2019
    Tagged With thanks
    Matthew Connors says

    Thanks again Dr Leigh - these two were both in undisturbed habitat near Lake Moodemere - both sightings were very close to each other, however this one was at night (~9pm) and the other during the afternoon (~3pm). Both seemed active and 'happy' to be not under any sort of cover - is this normal behaviour for planarians?

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  • Dr Leigh Winsor identified a sighting

    Sighting Unknown red flatworm - Australopacifica sp. Only one photo unfortunately

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    1 ids
    1 notes
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    Sighted 12 Jul 2017
    Dr Leigh Winsor 4 February 2019
    Rhabditophora
    (class)
    Taxonomy: Animalia: Platyhelminthes: Rhabditophora
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  • Dr Leigh Winsor described a sighting

    Sighting Another little striped flatworm - Anzoplana trilineata

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    1 ids
    4 notes
    0 disc.
    Sighted 10 Jul 2017
    Dr Leigh Winsor 4 February 2019
    Tagged With anzoplana trilineata
    Dr Leigh Winsor says

    More nice photos of this lovely little planarian, Anzoplana trilineata. Were the two records of this species found in natural bush or in disturbed habitat?

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  • Matthew Connors described a sighting

    Sighting Caenoplana coerulea complex

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    1 ids
    2 notes
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    Sighted 9 Jul 2017
    Matthew Connors 4 February 2019
    Tagged With thanks
    Matthew Connors says

    Thanks for all of these IDs Dr Leigh - unfortunately my camera isn't quite powerful enough to get good photos of the eyes (and I didn't really know what to look for back when I saw all of these!). This one was actually in relatively undisturbed habitat, a little way into the forest near the Beechworth Powder Magazine (although there are houses less than 300m away)

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  • Dr Leigh Winsor identified a sighting

    Sighting Another little striped flatworm - Anzoplana trilineata

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    1 ids
    4 notes
    0 disc.
    Sighted 10 Jul 2017
    Dr Leigh Winsor 4 February 2019
    Rhabditophora
    (class)
    Taxonomy: Animalia: Platyhelminthes: Rhabditophora
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  • Dr Leigh Winsor described a sighting

    Sighting Little striped flatworm (~15mm) - Anzoplana trilineata

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    1 ids
    1 notes
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    Sighted 10 Jul 2017
    Dr Leigh Winsor 4 February 2019
    Tagged With anzoplana trilineata
    Dr Leigh Winsor says

    Nice photos of Anzoplana trilineata, and a useful northerly extension of the range of this species.

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  • Dr Leigh Winsor identified a sighting

    Sighting Little striped flatworm (~15mm) - Anzoplana trilineata

    0 votes
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    1 ids
    1 notes
    0 disc.
    Sighted 10 Jul 2017
    Dr Leigh Winsor 4 February 2019
    Rhabditophora
    (class)
    Taxonomy: Animalia: Platyhelminthes: Rhabditophora
    0 votes
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