| Popis: |
In a blind laboratory study using spatial affinity as a recognition assay, tadpoles of Rana sylvatica associated preferentially with familiar sibs over unfamiliar, unrelated conspecifics. However, in concurrent observations, larval R. pipiens and Pseudacris crucifer failed to display a significant preference for familiar siblings. Thus, larval P. crucifer and R. pipiens failed to display sib recognition at similar ages and stages of development, and in the same context, as did tadpoles of R. sylvatica. Differences in the larval ecologies of the three species may explain the disparate results. The relative sensitivites of two slightly different assays of spatial affinity in anuran larvae are compared. |
