Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Opisthobranchia"”.
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The ecological role of sea hares (Opisthobranchia: Anaspidea) within tropical intertidal habitats
Herbivory in temperate marine ecosystems has been the focus of widespread research attention. In comparison, little is known about tropical herbivores and the role they play in controlling the abundance of marine macrophytes. This study investigates the role of one group of invertebrate herbivores, …
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Cretaceous Nerineacean gastropods
… Entomotacniata, an independent order within the Opisthobranchia. The Entomotaeniata is considered to show greatest affinities with some members of the Acteonacea. The Pyramidcllacea are not included in the Entomotaeniata. The order contains the Ceritellidae, Nerineidae, Nerinellidae and …
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Larval development and feeding ecology of Hermissenda crassicornis (Eschscholtz) and Aeolidia papillosa (Linnaeus)
… (1967) defines three developmental types for Opisthobranchia with representative nudibranchs in each category. The types are: 1.) planktotrophic larvae which are obligatory plankton feeders prior to progressive metamorphosis, 2.) lecithotrophic larvae which may feed on the plankton, but do not …
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The marine heterobranchs of the MPA Isole Ciclopi – A seasonal and faunistic study with a comparison with adjacent non-protected areas [Gli eterobranchi marini dell’Area Marina Protetta (AMP) Isole Ciclopi: uno studio faunistico e stagionale con una comparazione con le aree adiacenti non protette]
La presente tesi, oltre ad analizzare criticamente la totalità degli studi faunistici su gli eterobranchi marini condotti nelle varie regioni italiane e fornire per la prima volta la check-list completa delle specie di questo gruppo per la Sicilia, si propone di colmare la quasi totale assenza di …