Search for dissertations about: "polyandry"
Showing result 1 - 5 of 10 swedish dissertations containing the word polyandry.
-
1. Reproduction and survival in the lesser spotted woodpecker. Effects of life history, mating system and age
Abstract : Over 9 years, 116 breeding attempts made by individually marked lesser spotted woodpeckers (Dendrocopos minor) were followed in a study area in southern Sweden. The home-range area decreased from on average 742 ha in winter to a defended territory of 103 ha prior to breeding and 43 ha during nesting. READ MORE
-
2. Behaviour of Pine Sawflies in Relation to Pheromone-Based Pest Management
Abstract : Pine sawflies (Hymenoptera: Diprionidae) are severe pine defoliators. This thesis investigated sawfly behaviour related to the use of pheromones in integrated pest management, including monitoring with pheromone traps and mating disruption. READ MORE
-
3. Polyandry and the evolution of reproductive divergence in insects
Abstract : Multiple mating by females is common in nature. Yet, the evolution and maintenance of polyandry remains a bit of an evolutionary puzzle. It was my aim in this thesis to reach a greater understanding of this phenomenon as well as to investigate the consequences of polyandry on the evolution of reproductive divergence in insects. READ MORE
-
4. Mating strategies of male butterflies in relation to female fecundity and polyandry
Abstract : .... READ MORE
-
5. Pre- and post-copulatory sexual selection in the fowl, Gallus gallus
Abstract : The evolutionary goal of individuals is reproduction and sexual selection favours traits improving reproductive success. When males invest less than females in offspring, males have potentially a higher reproductive rate than females. READ MORE