Fig. 4. Relationship between regression coefficients and loss of body mass in individual Leptonycteris curasoa (A) and Glossophaga soricina (B). Filled circles, blood; open circles, wing membrane. The regression coefficient was significantly correlated with loss of body mass in G. soricina from which blood samples were taken (B, solid line). The linear regression equation was y=-0.001x+0.0055, based on a least-squares analysis.