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Academic & Professional Books  Insects & other Invertebrates  Other Invertebrates

The Encyclopedia of the Swedish Flora and Fauna, Ringmaskar: Havsborstmaskar [Swedish] Annelida: Polychaeta: Aciculata

Flora / Fauna Identification Key
By: Arne Nygren(Author), Fredrik Pleijel(Author), Helena Samuelsson(Illustrator)
384 pages, colour photos, colour & b/w illustrations, colour distribution maps
The Encyclopedia of the Swedish Flora and Fauna, Ringmaskar: Havsborstmaskar [Swedish]
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  • The Encyclopedia of the Swedish Flora and Fauna, Ringmaskar: Havsborstmaskar [Swedish] ISBN: 9789187853319 Hardback cloth-bound Apr 2018 Usually dispatched within 1-2 weeks
    £84.99
    #240646
  • The Encyclopedia of the Swedish Flora and Fauna, Ringmaskar: Havsborstmaskar [Swedish] ISBN: 9789187853326 Hardback leather-bound Apr 2018 Usually dispatched within 1-2 weeks
    £199.00
    #240647
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About this book

Language: Swedish, with English abstracts and identification keys

Most bristle worms, or polychaetes, are free-swimming, active hunters or passive sedimentivores. One of the most common active hunters is the ragworm (Hediste diversicolor or "bakborstig rovmask" in Swedish) that can be found at the shores under rocks and flattened seaweed.

Another polychaete, called bakfotsmasken in Swedish, lives in Gullmarsfjorden (a fjord on the west coast of Sweden), the North Sea and around the British Isles. The name has been given for its big "feet" behind the body. The bakfotsmasken has sea crayfish and lobster as a host animal and is beneficial to these because it keeps gills and eggs clean from bacteria and microalgae. There are also parasitic polychaetes, an example is a species called the "vampyrmasken" in Swedish, which feeds by extracting blood and bodily fluids from its host, another polychaete. In the mouth there are many teeth that act as an anchoring device on the host animal.

There are around 14,000 described polychaete species, of which about 500 are found in Swedish waters. This volume treats the 205 species belonging to the subclass Aciculata.

Summary in Swedish:
De flesta havsborstmaskar är frilevande, aktiva jägare eller passiva sedimentätare. En av de vanligaste aktiva jägarna är bakborstig rovmask som man kan hitta vid stränderna under stenar och uppspolad tång.

En annan av de havsborstmaskar som beskrivs är bakfotsmasken som bland annat lever i Gullmarsfjorden, Nordsjön och runt Brittiska öarna. Namnet har arten fått av de stora ”fötter” som finns bak på kroppen. Bakfotsmasken har havskräftor och humrar som värddjur och är till nytta för dessa genom att den håller gälar och ägg rena från bakterier och mikroalger. Det finns även havsborstmaskar som är parasiter, som till exempel vampyrmasken. Den äter genom att suga ut blod och kroppsvätskor från sin värd, som är en annan havsborstmask. I munnen finns många tänder som fungerar som förankringsanordning i värddjuret.

Det finns omkring 14,000 beskrivna arter av havsborstmaskar, varav ungefär 500 finns i svenska vatten. Denna volym behandlar de 205 arter som hör till underklassen Aciculata.

Customer Reviews

Flora / Fauna Identification Key
By: Arne Nygren(Author), Fredrik Pleijel(Author), Helena Samuelsson(Illustrator)
384 pages, colour photos, colour & b/w illustrations, colour distribution maps
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