Population Dynamics Of An Urban Population Of The Land Snail Marmorana Serpentina(gastropoda: Pulmonata)

摘要

Spatial distribution, population structure, and dispersal patterns are fundamental characteristics of species. When the area occupied by a population far exceeds the dispersal ability of individuals, random mating cannot be assumed over the entire population. Wright (1946) introduced the concept of "neighbourhood" for cases in which individuals have only a limited number of potential partners, their neighbours. Neighbourhoods are restricted areas where random mating is likely. Study of the population structure and understanding of speciation processes depend on accurate data on movement patterns, dispersal capacity, and density (Parmakelis & Mylonas, 2004).