The 'latitudinal gradient of biodiversity' hypothesis was tested utilising the geographical distribution of species taxa belonging to the family Sabellidae ( Annelida : Polychaeta), one of the polychaete families studied by only a few specialists around the world. An increase in species richness ...
Taxonomic composition of zoobenthos in the river pools of eastern Fennoscandia Taxon Brooks Rivers medial zone ripal zone Type Porifera Spongilla lacustris (Linnaeus, 1758) –++ Type Nematoda +++ Type Annelida, class Oligochaeta Eiseniella tetraedra (Savigny 1826) –++ Enchytraeidae sp. –+–...
The Protura is a group of mysterious soil-dwelling micro-arthropods (usually 0.5-2.0 mm in length), first described by Silvestri in 1907 [1]. Traditionally, it was regarded as a basal hexapod group, but it owns many unique and primitive morphological characteristics compared with other hexapods...
The two planktonic larval periods o f L anice conchilega (Pallas, 1766) Annelida Polychaeta, a peculiar exam ple o f the irre versibility o f evolution. Ophelia 29(2): 141-152.Bhaud,M.The two planktonic larval periods of Lanice conchilega (Pallas 1766) Annelida Polychaeta. A ...