2018, Vol. 5 Issue 3, Part C
Role of age and weather on residence time of males of Anartia amathea roeselia butterfly in a subtropical area in Southeastern Brazil
Author(s): Ronaldo Bastos Francini
Abstract: Residence-rate and residence time of butterflies are dependent of their survival which is dependent of its age. Survival declines only when they will senesce but can be affected by environmental conditions which can be weather, predation, and/or resource availability. The present study has the objective of estimate the role of (1) age and (2) abiotic environmental variables on residence time of males of the common butterfly, Anartia a. roeselia, during winter-spring of 2005 in a subtropical region in the coast of São Paulo, Brazil. The population was tracked during 159 days, from June to November 2005, using the method of multiple marking with recaptures to estimate residence rate and residence time and minimum population numbers at each sampling date. Residence was checked in each sampling cohort against sex, age at first capture, and size of butterflies. Multiple regression linear models were used to test ln transformed residence curves. The weed plant B. alba (Asteraceae) was the main nectar source for A. a. roeselia during the study. Recruiting of new males was continuous together with the arrival of individuals not yet detected. The home-range of males appear to be bigger than of that sampled area because at least 30 individuals remained more than five samplings without detection. Maximum residence time of males reached to 63 days with a residence rate = 0.93 indicating a residence time of = 14.7 days. Number of missings on each date were significant proportional with total number of old individuals in the sample. Residence time of Anartia a. roeselia males was affected negatively by two abiotic (weather parameters): minimum atmospheric pressure and difference between maximum and minimum atmospheric pressure. The average time to catch a butterfly had low but significant correlation with wind intensity. Residence rate and residence time are higher in males collected in age classes Intermediate and new.
Pages: 217-227 | 354 Views 12 Downloads
How to cite this article:
Ronaldo Bastos Francini. Role of age and weather on residence time of males of Anartia amathea roeselia butterfly in a subtropical area in Southeastern Brazil. International Journal of Fauna and Biological Studies. 2018; 5(3): 217-227.