The linear distribution of two Oesophagostomum species in the intestine of the pig.

In both Denmark and Scotland the domestic pig, Sus scrofa domestica, is frequently parasitised by two species of the nematode genus Oesophagostomum: Oe. quadrispinulatum, and Oe. dentatum (1). Other studies (2) have shown that the Oesophagostomum population of the caecum of the host is dominated numerically by Oe. quadrispinulatum. The present investigation was designed to supply quantitative data in support of these observations.