The Larvae of Monogenea (Platyhelminthes)

作者: Ian D. Whittington , Leslie A. Chisholm , Klaus Rohde

DOI: 10.1016/S0065-308X(08)60232-8

关键词: ZoologyEpidermis (zoology)SynapomorphyEntobdella soleaeMonogeneaMonopisthocotyleaPolyopisthocotyleaMonophylyBiologyIntegument

摘要: Abstract There has been no comprehensive review of the infective larval stage (oncomiracidium) in direct life-cycle monogeneans since Llewellyn (1963, 1968). In last 30 years, knowledge general anatomy and morphology oncomiracidia increased significantly as information on swimming behaviour egg-hatching strategies that may enhance chances host infection. Nevertheless, are known for only a small proportion monogenean species described. This consolidates established, summarizes new, Llewellyn's work integrates light- electron-microscopy studies including unpublished data. Currently there is considerable debate, fuelled largely by phylogenetic using molecular techniques, about whether or not class Monogenea (comprising subclasses Monopisthocotylea Polyopistho-cotylea) monophyletic. challenges established views Polyopisthocotylea form single clade based two characters: pairs rhabdomeric eyes; three bands ciliated cells. an attempt to reveal further synapomorphies entire (or provide evidence against its monophyly) possibly only, we following features: haptoral sclerites; cells; epidermis; terminal globule; gland, proto-nephridial nervous systems; sense organs; digestive tract; parenchyma; behaviour. Conclusions equivocal but indicate studies, especially ultrastructural, necessary assess: presence absence ‘false’ vertical rootlets epidermal cilia; tapering protonephridial system; glands their secretions; embryology chemical composition sclerites. Future integration likely be particularly informative.

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