Cercaria
The free-swimming trematode larva that emerges from its host snail; it may penetrate the skin of a final host (as in schistosoma of man), encyst on vegetation (as in Fasciola), in or on fish (as in Clonorchis), or penetrate and encyst in various arthropod hosts. Body and tail are greatly varied in form, and specialised function is adapted to the particular life cycle demands of each species.
See: sporocyst, redia.
Origin: g. Kerkos, tail
Cercaria The free-swimming trematode larva that emerges from its host snail; it may penetrate the skin of a final host (as in schistosoma of man), encyst on vegetation (as in Fasciola), in or on fish (as in Clonorchis), or penetrate and encyst in various arthropod hosts. Body and tail are greatly varied in form, and..
Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..
The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..
This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..
Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..
