BDeed's picture

Could this be B.hameri?

Observed: 26th March 2011 By: BDeed
Merseyside BioBankThe Wildlife Trust for Lancashire, Manchester and
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bhameri
Description:

Small groups of this barnacle stood out amongst the others, though i know some species grow tall and more steep sided in dense colonies this didn't seem to be the case here, the most closely resembling species i can find is B.hameri(Chirona hameri). However, i am very dubious of this identification, especially on checking the NBN gateway distribution!

Identifications
Species interactions

No interactions present.

Comments

Mike Kendall's picture

Can't tell from the picture

Sorry! Its unlikely to be B.hameri which tends to be subtidal in areas with rapid water flow. Two possibilities are B improvisus or ,more likely, B.crenatus.

Once again a "head-on" photograph gives the details needed for ID.

Mike Kendall

BDeed's picture

Thanks again Mike! Do those

Thanks again Mike! Do those two species differ in ecology? The Shore where these are is regularly exposed for long periods, the surrounding habitat is mostly sand silty mud and the currents aren't particularly strong where they meet the rocks.

Mike Kendall's picture

you are keeping me busy

I tend to think of B.improvisus as being a ports and estuaries species and B.crenatus turning up on the rocky intertidal and shallow subtidal.

The easiest feature separating the species is the colour of the tergo-scutal flaps. Yellow edge with a purple stripe in crenatus and speckled in improvisus.

Mike Kendall