Dispersion Factors in the Arboreal Snail Sitala Jenynsi (Gastropoda: Ariophantidae)

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dc.contributor.authorKasigwa, Peter F.
dc.date.accessioned2016-07-11T14:54:21Z
dc.date.available2016-07-11T14:54:21Z
dc.date.issued1999
dc.descriptionFull text can be accessed at http://www.tandfonline.com/doi/abs/10.1080/02541858.1999.11448502en_US
dc.description.abstractSitala jenynsi snails from the University and Wazo populations of Dar es Salaam, Tanzania, were released on grass, and on forest terrain, in both regions during the dry (February, March) and the rainy seasons (April). Snail dispersion was assessed as weekly quadratic means and as the overall Diffusion Coefficient 0.423 nr/week. The coefficient was enhanced by grassy habitats, continuous vegetation cover, absence of edible plants and rainy weather; conversely, dispersion was retarded by shrubs, vegetation discontinuities, presence of edible plants and dry weather. There were differences in the rate of dispersion between populations, snails from the University Campus being faster. In each release a broadly unidirectional dispersion was recorded. The populations in question, seasons and the direction of origin of the snails seemed immaterial to directionality of dispersion, The dispersion rates of Sitala jenynsi exceeded those of the helicids Cepaea nemoralis and Theba pisana and of the partulid Pariula taeniata. While observed dispersion rates of S jenynsi may warrant the mixing of individuals in a population, they seem insufficient to facilitate appreciable migration of snails between neighboring populations.en_US
dc.identifier.citationKasigwa, P.F., 1999. Dispersion factors in the arboreal snail Sitala jenynsi (Gastropoda: Ariophantidae). South African Journal of Zoology, 34(4), pp.145-153.en_US
dc.identifier.doi10.1080/02541858.1999.11448502
dc.identifier.urihttp://hdl.handle.net/20.500.11810/3088
dc.language.isoenen_US
dc.publisherTaylor and Francisen_US
dc.titleDispersion Factors in the Arboreal Snail Sitala Jenynsi (Gastropoda: Ariophantidae)en_US
dc.typeJournal Article, Peer Revieweden_US
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