The Feeding of Hollow-Spear Nematodes on Other Nematodes

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Abstract
The habit of nematodes preying upon other nematodes is well developed in 2 groups in which it apparently had not been recorded previously: the genus Aphelenchoides Fischer, and the dorylaim genera Dorylaimus Dujardin, Discolaimus Cobb, and Actinolaimus Cobb. Equipped with hollow, protrusive oral spears or stylets, predators of these genera feed, not as do the types formerly recognized as feeding on nematodes, but rather by inserting their spears into their prey and holding them there while sucking out the body contents. During the feeding of 2 spp. of Aphelenchoides, saliva was seen flowing out from the large dorsal esophageal gland, through the esopha-geal tube and into the prey.

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