APHOTOMARINE
An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.
Galls possibly caused by Thalestris rhodymeniae (Brady, 1894) copepod nauplius in Palmaria palmata.
Scroll down and rollover titles to change screen image or click on title to view image.
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 1 -1
Palmaria palmata
- gall 1 -1
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 1 -2
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 2 -1
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 2 -2
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 2 -3
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 2 -4
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 2 -5
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 2 -6
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 2 -7
Gall possibly caused by Thalestris rhodymeniae copepod nauplius
Palmaria palmata
- gall 2 -8
Specimens above were found on Dulce, Palmaria palmata, on the lowershore at Roskilley, near Mousehole, Cornwall, 16.04.18.
Galls in Palmaria palmata are known to be caused by bacteria and the parasitic copepod Thalestris rhodymeniae (Brady, 1894), syn. Fucitrogus rhodymieniae Brady, 1894 which appears the likely agent. Galls are caused by the naupliar stage of this harpacticid copepod.
Ref:
Harding, J. P. - The copepod Thalestris rhodymeniae (Brady) and its nauplius, parasitic in the seaweed Rhodymenia palmata (L.) Grev.* Journal of Zoology 124(1):153-161. May 2010.
Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 = Rhodymenia palmata (Linnaeus) Greville, 1830.
Thanks to Prof. Michael Guiry for his help and advice on this page.
The main objective of this website is in furthering environmental awareness and education through the medium of photography. To increase awareness and access to the wildlife of the region and help
people find and identify it. Sometimes the difference between species is obvious but many species can only be determined by observing microscopic characteristics that are specific to any one species.