Parorchis acanthus, the Type of a new Genus of Trematodes
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New records of gastrointestinal helminths from the southern black-backed gull (Larus dominicanus) in New Zealand
Nine species of gastrointestinal helminths were found in southern black-backed gulls (Larus dominicanus Lichstenstein, 1823) from Otago Peninsula. Eight of these, Parorchis acanthus, Echinostoma revolutum and Echinoparyphium recurvatum (Trematoda), Dildotaenia latovarium and Hymenolepis alaskensis (Cestoda), Sciadiocara tarapunga (Nematoda), and Profilicollis antarcticus and P. novaezelandensis...
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Parasites are well-known to alter the behavior of their hosts, but there is still a paucity of knowledge about how parasites modify the behavior of many ecologically influential host species. I studied the keystone grazer, the salt marsh periwinkle (Littoraria irrorata), to determine the influence of infection by the digenetic trematode, Parorchis acanthus, on its grazing behavior. Comparative ...
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Parabetaeus acanthus sp. nov. is described based on two specimens from Thuwal, Saudi Arabia, and Madang, Papua New Guinea. The new species is unique within the genus in possessing an anteriorly directed, spine-like tooth on the mid-dorsal line of the carapace, posterior to base of the eyes, and in the stylocerite not reaching the mid-length of the first article of the antennular peduncle. The c...
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