Sighting

Matthew Connors 12 Jan 2019

Another little striped flatworm - Anzoplana trilineata

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Sighted 10 Jul 2017

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Identifications

  • Dr Leigh Winsor 4 February 2019
    Rhabditophora
    (class)
    Taxonomy: Animalia: Platyhelminthes: Rhabditophora
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Notes

  • 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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  • 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 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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  • 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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