Parasites and social insects

Parasites and Insects Affecting Livestock

PARASITES that attack livestock and poultry may live on the skin or in its layers (external parasites) or in the digestive tract, the liver, tlie lungs, the kidneys, and elsewhere in the body (internal parasites). With few exceptions, the external parasites are insects or forms related to insects. Most of the internal parasites.are either microscopic organisms known as protozoa or belong to a g...

Social Insects

■ Abstract Reproductive-skew theory can be broadly divided into transactional models, in which reproduction is shared among group members in return for some fitness benefit, and tug-of-war models, in which reproductive sharing arises solely from an inability of each group member to fully control the others. For small-colony social insects in which complete reproductive control by a single indiv...

One million insects--a lot of parasites?

Mermithid parasites of agricultural pest insects.

T h i s pape r assesses ou r state of knowledge of physiological processes involved in the re la t ionships between insects and the i r m e r m i t h i d ne m a tode parasi tes. T h r e e ma jo r componen t s of the host -paras i te relat ionship(s) are reviewed: effects of m e r m i t h i d s on hos t physiology, effects of hos t physiology on mermi th id s , and the physiology of the nema tod...

Social Behavior and Parasites