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.

A-P-H-O-T-O Wildlife Stock Image Library
Halenchus fucicola (de Man, 1892) Cobb, 1933 - A nematode causing galls on Ascophyllum nodosum
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Ascophyllum galling nematode
Halenchus fucicola
- gall on Egg Wrack stipe 1

Ascophyllum galling nematode
Halenchus fucicola
- gall on Egg Wrack stipe 2

Ascophyllum galling nematode
Halenchus fucicola
- gall on Egg Wrack stipe 3

Ascophyllum galling nematode
Halenchus fucicola
- gall in cross section 1

Ascophyllum galling nematode
Halenchus fucicola
- gall in cross section 2

Ascophyllum galling nematode
Halenchus fucicola
- nematode 1

Ascophyllum galling nematode
Halenchus fucicola
- nematode posterior 1

Ascophyllum galling nematode
Halenchus fucicola
- nematode anterior 1

Specimens of galls found on the stipes of the brown seaweed Ascophyllum nodosum, Knotted or Egg Wrack, on the middleshore at Hannafore, Looe, Cornwall. 29.03.17.

The galls and nematode is the same as described and photographed for the paper by John W. Coles, Nematodes parasitic on sea weeds of the genera Ascophyllum and Fucus. J. mar. biol. Ass. UK. (1958) 37, 145-155.

Another species Halenchus dumnonicus can be found on Saw or Toothed Wrack, Fucus serratus and Fucus vesiculosus, Bladder Wrack.

Halenchus fucicola nematode causing seaweed galls Ascophyllum nodosum Knotted or Egg Wrack Nematode images
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.