Rachel Bicker's picture

Chiton species?

Observed: 1st November 2013 By: Rachel BickerRachel Bicker’s reputation in InvertebratesRachel Bicker’s reputation in Invertebrates
Species interactions

No interactions present.


markwilson's picture


Agree with chiton don't know species

JoC's picture

Chiton id

Chitons. There are a dozen species around the shores of BI, so more details are needed to say which your post is. The following are good features to start with:
The girdle around the edge may have dense tufts of bristles (3 species).
Or the girdle may be granular or scaly, with or without spines but no tufts of bristles. (9 species)
Of these 9 species, some have small flat scales on the girdles, sometimes interspersed with fine, recumbent spines and fringed with spines (4 species).
Others have fine or coarse granulation or appear smooth; with or without recumbent spines, usually fringed with spines. (5 species).
Looking forward to seeing your next post.
Refs: Hayward and Ryland 1990 Marine Fauna of the British Isles and N-West Europe.


Rachel Bicker's picture

Detailed features

Hi Jo thanks for that, my photo is pretty useless so I will bear in mind those features and take a closer look next time :-)

JoC's picture


It's not a rubbish photo; if there were only one British species it would be fine. Not everyone knows that there is more than one chiton on the seashore. You can put the details in the text part of your post; you don't have to actually get a photo of everything, though that can be an interesting challenge too.
Have you seen this chiton from Chile?http://www.ispotnature.org/node/377090
It didn't need any details to agree that one.


dejayM's picture


Well...judging by the (renamed) Spirobranchus triqueter tubes, this chiton is about 15-18mm long. It seems to have a weak keel, it of fairly uniform colour and may, just may, have no bristle bunches along its apron. We may then be able to deduce it to be Lepidochitona cinerea - (the badly named Grey Chiton)**.
But Jo is right to be reserved, it needs more detail to be certain. I'd say it's a good bet. However, I think you should ID it Chiton (you'll get some agreements (Jo's, Mark's & mine.)) and then put it down to experience for next time.

**The commonest and most widespread chiton found on British rocky shores is Lepidochitona cinerea. On many shores it is the only species to be found.
More >>HERE<<<

Rachel Bicker's picture

more details

Cheers for the advice guys! I quite like chitons, hope I find many more to practice i.dents on!