Sökning: "juvenile growth rate"
Visar resultat 11 - 15 av 21 avhandlingar innehållade orden juvenile growth rate.
11. Population Dynamics and Conservation of the Sand Lizard (Lacerta agilis) on the Edge of its Range
Sammanfattning : The sand lizard (Lacerta agilis) reaches the northern periphery of its distribution in south-central Sweden, where small, isolated relict populations occur in pine heath forests on sandy sediments. Modern forestry and fire suppression have reduced the amount of suitable open habitat for the species in this area and seem to be important for its decline. LÄS MER
12. Nutrition of Arctic charr (Salvelinus alpinus) and Eurasian perch (Perca fluviatilis) and evaluation of alternative protein sources
Sammanfattning : The aim of this thesis was to estimate the dietary lysine requirement of Eurasian perch (Perca fluviatilis), to study the digestive enzyme activity in perch and Arctic charr (Salvelinus alpinus) and the utilization of meals of microbial and mussel meals. Juvenile Eurasian perch were fed semi-purified diets containing graded levels of lysine (12. LÄS MER
13. Round goby Neogobius melanostomus in the Baltic Sea – Invasion Biology in practice
Sammanfattning : Human mediated transfer of non-indigenous species is considered to be a major threat to global biodiversity. The Ponto-Caspian round goby (Neogobius melanostomus), which has established populations in various regions in Eurasia and North-America, was first observed in Gulf of Gdańsk, Baltic Sea, in 1990. LÄS MER
14. Flow effects on settlement and recruitment in the barnacle BALANS IMPROVISUS with applications for biofouling control
Sammanfattning : An understanding of the processes causing patterns of organism distributions in time and space is fundamental in ecology. For sessile marine invertebrates, water motion is an important predictor of distribution patterns, affecting organisms all the way from dispersal to post-settlement recruitment. LÄS MER
15. Parasite host interaction between the freshwater pearl mussel (Margaritifera margaritifera) and brown trout (Salmo trutta) – the impact from glochidia larvae on the host
Sammanfattning : Parasites can modulate the physiology and behavior of the hosts to enhance their chances to complete their life cycle. The numerous freshwater bivalves of the order Unionoida all have a parasitic larval stage, also known as glochidia, parasitizing fish hosts. LÄS MER