gramandy's picture

Chiton

Observed: 19th March 2013 By: gramandy
Kent Wildlife TrustThanet Coast ProjectWildwood Trust
gramandy’s reputation in Invertebratesgramandy’s reputation in Invertebratesgramandy’s reputation in Invertebratesgramandy’s reputation in Invertebrates
Chiton
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Description:

A family of chitons here (there were 5 chitons on this chalk rock, all similarly coloured). Maybe L.asellus but maybe L.cinerea? Pic 4 to show relative flatness and smoothness of plates. Any polyplacophora experts out there?

Identifications
Species interactions

No interactions present.

Comments

gramandy's picture

Chris..

..can you tell me why you have ruled out L.asellus? I couldn't be sure about either asellus or cinerea (colour, smoothness,girdle lack of granules etc). L.asellus is found around here/English channel and further north & T.rubra certainly isn't (in our area) and surely doesn't look like this.

I think that you are right as this was found further up the shore than my other posting which wouldn't be right for L.asellus.

ChrisMcA's picture

It really is the tides; the

It really is the tides; the pembroke table has a range (extr high to extr low) of 7.3m & the low on Mar19 was 2.5m. I guess you need a low of at least 1.3m before you get to sponges where the remaining chitons start (my table says mar'25). There's a handy website http://www.ucd.ie/cobid/chitons/index.html which gives a key to Irish chitons, +List & description of sp's; & it says L.asellus is subtidal,from low water down, & C.M. Yonge (mollusc expert) wrote of the Leptochiton species "none, except at extremely low tides, are ever likely to be encountered except in dredge hauls".

gramandy's picture

brill

thanks for that. I guess all the chitons I encounter and there are alot of them will all be cinerea then.

dejayM's picture

colour

Bang goes my theory about camouflage!
http://www.ispot.org.uk/node/326271
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