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[Differences in the size of eggshells among three Pangstrongylus megistus colonies]
João A da Rosa1, Hernany H G Justino, José M S Barata
1Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista, Araraquara, SP, Brasil. rosaja@fcfar.unesp.br
Revista De Saude Publica
|August 26, 2003
Abstract:
The objective of the study was to evaluate the measurements of eggshells from three colonies of P. megistus, two from the lab and one from a sylvatic habitat. Fifty eggshells from each colony were measured with the use of a stereoscopic microscope and the Qwin image analysis system,. The statistical analysis was performed using unpaired t-test in INSTAT program. The length, width and diameter of the opercular opening of the eggshells from the sylvatic colony were larger than the two laboratorial colonies of P. megistus.