BIOL 312 Lecture Notes - Lecture 27: Trichogrammatidae, Sap, Pentatomidae

• School: University of Victoria
• Department: Biology
• Course: BIOL 312
• Professor: Steve Perlman

Document Summary

Symbiosis: intimate association between different species (often beneficial, but not necessarily). Microbial symbionts of insects (and animals in general): ubiquitous, yet virtually unknown. A major change in how we think about microbes. Small and cryptic, most can"t be cultivated, they can live in very complex communities. Molecular and genomic revolution: new ideas and technological methods to study them. Gut symbionts (in gut, extracellular), inherited symbionts (from mother offspring, intracellular). Diversity of transmission modes (environmental or genetically inherited). Hemipteran (bean bug) have crypts in gut that house one specific bacterium. Egg smearing behaviour in stinkbugs smear of bacteria. Nymphs emerge and ingest the liquid that covered their eggs bacteria colonize specific crypts in the gut. Remember termite gut symbionts from earlier complex symbioses with microbes (bac and pro) involved in wood digestion (i. e. nutritional). Many other extracellular symbioses, including fungi, microbial euks, and bacteria to digest wood and plant material.