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Leeches
41516
Leeches
http://www.univer.kharkov.ua/main/dep/biology/zoology/leech.htm
Photographs of various species from the North Pacific and the Ukraine.
Biology > Biota > Fauna > Annelida > Hirudinea
Jan 6, 2008
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Other links at Biology > Biota > Fauna > Annelida > Hirudinea
A term paper on leeches, some of the most loathed and degraded invertebrates around?
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The authors investigated the salivary gland cells of leeches.
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This page states that leeches are among the most highly specialized of the annelids. They are predominantly freshwater organisms, although there are marine and terrestrial forms. Leeches are highly specialized predators that feed on blood.
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Histological, histochemical and bacteriological methods were used to study digestion and the digestive enzymes in nine species of leech.
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The authors determined leeches found on the fishes of the lakes Ukiel, WulpiDskie and Warniak.
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The authors state that Piscicola geometra (L.), Piscicola respirans Troschel, 1850, and Caspiobdella fadejewi (Epshtein, 1968) find their hosts (fishes) by reacting to their shadow.
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The authors studied the position, structure and function of pulsatile vesicles in parasitic leeches.
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The authors show that the vector tissue in four species of leeches is composed of a mass of cells located directly beneath the copulatory area, and two thin strands extend toward the ovaries.
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Article about the medicinal leech from Animal Diversity Web.
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