caa a22 4500 469095997 CHVBK 20180323133031.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF00317459 doi (NATIONALLICENCE)springer-10.1007/BF00317459 Miyashita Tadashi Laboratory of Forest Zoology, Faculty of Agriculture, University of Tokyo, Bunkyo-ku, 113, Tokyo, Japan aut Feeding rate may affect dispersal in the orb-web spider Nephila clavata [Elektronische Daten] [Tadashi Miyashita] Population parameters of the orb-web spider Nephila clavata were estimated at two sites with different spider densities (for 2 successive years at the high density site and 1 year at the low density site), and the relationship between survival rate and feeding conditions was examined. The rate of decrease of population density was almost constant over time and nearly the same at the two sites. Daily survival rate (sum of the effects of mortality and emigration) was low during August to early September and increased markedly thereafter. Daily immigration rate (number of immigrants/number of residents) was high during August to early September. Since there were strong negative correlations between survival and immigration rates, low survival rate seems to be caused by a high rate of emigration. Strong positive correlations were found between survival rate and feeding frequency (mean percent observed feeding). Analysis of covariance revealed that the parameters of the regression between survival rate and feeding frequency did not differ significantly among three occasions. These results suggest that feeding condition has a significant influence on dispersal activity of populations in this spider. Springer-Verlag, 1992 Spider nationallicence Population parameters nationallicence Survival rate nationallicence Dispersal nationallicence Feeding condition nationallicence Oecologia Springer-Verlag 92/3(1992-12-01), 339-342 0029-8549 92:3<339 1992 92 442 https://doi.org/10.1007/BF00317459 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317459 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Miyashita Tadashi Laboratory of Forest Zoology, Faculty of Agriculture, University of Tokyo, Bunkyo-ku, 113, Tokyo, Japan aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 92/3(1992-12-01), 339-342 0029-8549 92:3<339 1992 92 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer