Essays about: "life-history traits"

Showing result 11 - 15 of 23 essays containing the words life-history traits.

  1. 11. Malaria infection in relation to reproductive success and secondary sexual traits in collared flycatcher : In new and old breeding areas

    University essay from Mittuniversitetet/Avdelningen för naturvetenskap

    Author : Ye Xiong; [2014]
    Keywords : ;

    Abstract : Life-history theory is based on the idea that every individual face a limitation of energy, nutrients and time in its lifespan. This optimization problem is resulting in trade-offs between resource demanding tasks and traits. READ MORE

  3. 12. Survival of brown trout fry in nature: effects of activity, body size and starvation

    University essay from Linköpings universitet/Biologi; Linköpings universitet/Tekniska högskolan

    Author : Per Saarinen Claesson; [2014]
    Keywords : Brown trout; fry; activity; survival; body size; compensatory growth; starvation;

    Abstract : The first year of life is one of the main survival bottlenecks for many fish species. Individual traits affecting survival can be morphological, physiological or behavioural. Body size, growth rate and activity have all been found to affect fitness in different organisms. READ MORE

  4. 13. Long bone and vertebral microanatomy and osteo-histology of ’Platecarpus’ ptychodon (Reptilia, Mosasauridae) : implications for marine adaptations

    University essay from Lunds universitet/Geologiska institutionen

    Author : Miriam Heingård; [2014]
    Keywords : benhistologi; mikroanatomi; mosasaurier; akvatisk anpassning; tillväxthastighet; bone histology; bone microanatomy; mosasaurs; aquatic adaptations; growth rate; Earth and Environmental Sciences;

    Abstract : The inner bone architecture and histology provide information about life history traits of extant as well as extinct animals. Mosasaurs (family Mosasauridae) are a group of secondarily adapted marine squamates that radiated in the Late Cretaceous, resulting in the evolution of a body plan adapted for pelagic habitats. READ MORE

  5. 14. The relationship between personality and basal metabolic rate in Red Junglefowl (Gallus gallus)

    University essay from Biologi; Tekniska högskolan

    Author : Åsa Näsström; [2013]
    Keywords : Allocation model; basal metabolic rate; behaviour; chicken; oxygen consumption; personality traits;

    Abstract : ‘Animal personality’ refers to individual behavioural differences that are consistent over time and context. Physiological constraints are suggested to underlie this constraint in behavioural plasticity. As energy is required for physiological processes that generate behaviour, energy metabolism could be a proximate explanation for personality. READ MORE

  6. 15. Is personality dependent of growth rate in red junglefowl (Gallus gallus)?

    University essay from Institutionen för fysik, kemi och biologi; Tekniska högskolan

    Author : Andreas Calais; [2013]
    Keywords : Behaviour; Chicken; Growth rate; Life-history traits; Personality; Red junglefowl;

    Abstract : Personality has been reported in a large variety of animal species, but it is not obvious why animals have personality. Variation in physiological traits, such as growth rate, should theoretically affect variation in behaviours and thus can explain why we observe variation in personalities. READ MORE