Опубликована: Дек. 8, 2023
The world population is growing at an unprecedent rate and solutions to sustainably feed the increasing are urgently needed. Insects rich in protein lipids hence they represent a valid alternative source of these nutrients. Selecting for leaner or fatter phenotype insects could improve their application as food allow convert organic material into resources destined other applications respectively. To become successful target selection, trait must meet specific criteria such being genetically determined, heritable, showing potential respond selection. In this thesis I aim explore genetics fat accumulation house fly answer if meets three criteria. Chapter 2, provide general overview most up-to-date information on biology with particular emphasis its nutritional ecology, industrial species, relevant aspects, particularly light insect level. 2 wants be compendium those interested intriguing organism guide that want harness purposes. 3 first important question understand artificial selection: it determined? Chapter, used strains originated from different European locations. These were tested common environment two temperatures investigate ontogeny reserves. results experiment show there strong effect strain reserves, suggesting genetic component determines trait. 4 answering second about fly: heritable trait? Here estimated narrow sense heritability one by using half-sib paternal experimental design statistical models. High estimates found models giving similar results. discuss meaning our result selecting flies improved characteristics. 5 last regarding answered: can selection? evolution test response selective pressure. exposed larvae multiple generations nutritionally challenging diets. work we diets induced direct, plastic responses storage. Moreover, also when reversed ancestral diet, lines administrated differed significantly providing proof long lasting changes have occurred strains. Lastly, dedicate 6 discussion obtained give synthesis possibility select fat-tailored phenotypes content included goal selection program.
Язык: Английский