Sökning: "reproductive costs"
Visar resultat 1 - 5 av 63 avhandlingar innehållade orden reproductive costs.
1. Costs and Tactics in the Evolution of Reproductive Effort
Sammanfattning : This study focuses on various aspects of costs of reproduction and the evolution of energetic breeding tactics. It emphasizes the distinction between demographic costs of reproduction expressed already before current offspring have reached independence (prebreeding costs), and costs expressed only after offspring independence (postbreeding costs). LÄS MER
2. Costs, benefits and constraints in the evolution of avian reproductive tactics: a study on the blue tit
Sammanfattning : In this study I have investigated the various factors influencing reproductive tactics among breeding blue tits (Parus caeruleus). The study was carried out in a nestbox-breeding population of marked individuals at the Revinge Area, outside Lund, southern Sweden. LÄS MER
3. Age, Longevity and Life-History Trade-Offs in the Collared Flycatcher (Ficedula albicollis)
Sammanfattning : Age is often a neglected factor in ecological studies. However, age-related changes in reproduction and survival of organisms may strongly influence population dynamics. LÄS MER
4. Centralized Ovarian Cancer Care - Complications, Costs and Survival
Sammanfattning : Background: Ovarian cancer is often diagnosed at advanced stages, and its mortality is high. Surgical treatment of advanced ovarian cancer strives toward complex primary debulking surgery (PDS), aiming for complete cytoreduction (R0) and improved survival. LÄS MER
5. Reproductive allocation and costs of reproduction in subarctic herbs : A resource-based perspective
Sammanfattning : The influence of internal and external factors on two major plant life history components, i.e., reproductive allocation and costs of reproduction, was examined for nine perennial herbs in subarctic Swedish Lapland. In one study, comparisons were made between Sweden and the French Alps. LÄS MER