From: Marie Pendle EM CEFAS <M.A.Pendle@cefas.co.uk>
On Mon, 24 Sep 2001 21:04:25 -0400, you wrote:
>I have never seen Crangon with colours other than brown changing to sandy
>colour depending on the colour of the substrate or whether it is night or
I've never seen any Crangon (or Pontophilus) with anything even
resembling that coloration either. Also the habit, sitting on what
appear to be an urchin test, and body shape, to me suggests that this
isn't Crangon. If I was to hazard a guess... Philocheras?
If whomever posted that pic could post more pics of the shrimp that'd
help - it's a nice pic, but I can't make out much detail.
Philocheras, if that's what it is, seem quite rare here in Sweden.
It'd be interesting to know if they really are common in Norway.
Michael Norén, Doctoral student,
Stockholm University and Tel: Int +46 (0)8 5195 5163
Swedish Museum of Natural History, Fax: Int +46 (0)8 5195 5181
"Nihil umquam facile"
I participated in a study of the southern North Sea, English Channel
Celtic Seas - there is a paper on this study if anyone is really really
interested - surveying epifauna and infauna from marine sites, ranging from
realtively close inshore to quite a way offshore (SW Approaches and central
North Sea) We found Crangonidae at most sites - including some with almost
50/50 Crangon allmanni/crangon. All the other species were given the genus
Pontophilus at that time and we found
Pontophilus bispinosus (also Philocheras bispinosus) now Crangon bispinosus
Pontophilus echinulatus (also Philocheras echinulatus) now Crangon
Pontophilus fasciatus (also Philocheras fasciata) now Crangon fasciatus
Pontophilus sculptus (also Philocheras sculptus) now Crangon sculptus
Pontophilus spinosus - no name change
Pontophilus trispinosus - no name change
Both of Pontophilus species were present in moderate numbers in the North
Sea, along with occasional C. fasciatus. C. fasciatus was absent from the
English Channel and Celtic Seas, but all others were found in these areas.
I would infer from this that C. fasciatus may indeed be present up in
Norwegian waters - Smaldon, 1979 gives a distribution from Iceland to the
Mediterranean and Azores and mentions the "blue spots".