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The Glossiphoniidae, the freshwater jawless leeches, [citation needed] or leaf leeches (due to their shape) [11] are freshwater leeches, flattened, and with a poorly defined anterior sucker. [2] The family Glossiphoniidae contains one of the world's largest species of leech, the giant Amazon leech, which can grow up to 45 cm in length. [12]
Some 680 species of leech have been described, of which around 100 are marine, 480 freshwater and the remainder terrestrial. [ 4 ] [ 5 ] Among Euhirudinea , the true leeches, the smallest is about 1 cm ( 1 ⁄ 2 in) long, and the largest is the giant Amazonian leech, Haementeria ghilianii , which can reach 30 cm (12 in).
These leeches are generally flattened, and have a poorly defined anterior sucker. Most suck the blood of freshwater vertebrates like amphibians, crocodilians and aquatic turtles, but some feed on invertebrates like oligochaetes and freshwater snails instead. Although they prefer other hosts, blood-feeding species will opportunistically feed ...
A rare breed of blood-sucking leech is being bred at London Zoo in a bid to save the UK’s largest native leech species from extinction. ... Dr Ewald from the Freshwater Habitats Trust ...
Haementeria ghilianii is a species of leech in the Glossiphoniidae family, comprising freshwater proboscis-bearing leeches. Colloquially, they are known as the Amazon giant leech. The species was declared extinct in 1893 after no wild specimen could be found. [1]
E. octoculata is one of the most common freshwater leeches in Europe with documentation in over 20 countries. [7] [8] This species has been shown to be more abundant in fast moving streams and rivers with rocky bottoms than other leech species. [9] [10] E. octoculata prefers acidic bodies of water with low nutrient content. [10]
Some of the leeches in this family have external gills, outgrowths of the body wall projecting laterally, the only group of leeches to exchange gases in this way. [3] Worldwide, around 60 genera and 100 species of leeches are in this family, all parasitic on the blood of marine, estuarine, and freshwater fishes.
Helobdella is a genus of leeches in the family Glossiphoniidae, the freshwater jawless leeches. They occur worldwide. [1] These are small, flat leeches which do not feed on blood. [2] Several species in this genus are used as model organisms in the study of developmental biology. [1] It has been difficult to define species in this genus without ...
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