Search results for "lajit"
showing 10 items of 295 documents
Palloilulajien entisten huippu-urheilijoiden ravitsemustottumukset vanhemmalla iällä
2015
Outi Polso (2014). Palloilulajien entisten huippu-urheilijoiden ravitsemustottumukset van-hemmalla iällä. Terveystieteiden laitos, Jyväskylän yliopisto, liikuntalääketieteen pro gradu-tutkielma, 54 s., 1 liite. Ravitsemus, harjoittelu ja lepo muodostavat urheilun peruspilarit. Urheilijoiden ravitsemustot-tumusten ja sitä kautta myös ravinnonsaannin on todettu olevan parempaa muuhun väestöön verrattuna, mutta urheilu-uran vaikutuksia ravitsemustottumuksiin urheilu-uran loppumisen jälkeen on tutkittu vain vähän. Tämän tutkielman tarkoituksena oli selvittää palloilulajien suomalaisten entisten huippu-urheilijamiesten nykyisiä ravitsemustottumuksia sekä ravitse-mustottumusten yhteyttä heidän ke…
Droplet digital PCR as a tool for investigating dynamics of cryptic symbionts
2021
Abstract Interactions among symbiotic organisms and their hosts are major drivers of ecological and evolutionary processes. Monitoring the infection patterns among natural populations and identifying factors affecting these interactions are critical for understanding symbiont–host relationships. However, many of these interactions remain understudied since the knowledge about the symbiont species is lacking, which hinders the development of appropriate tools. In this study, we developed a digital droplet PCR (ddPCR) assay based on apicomplexan COX1 gene to detect an undescribed agamococcidian symbiont. We show that the method gives precise and reproducible results and enables detecting cryp…
The role of agroecosystems for invasion of a generalist herbivore
2014
Analysoitavana Marja Kyllösen Lyijyuuma ja sen saamat arvostelut
2001
Glochidia Infection of Endemic Fishes from Lake Prespa, N. Macedonia
2022
Large freshwater mussels (Unionida) are long-lived, have large bodies, and produce thousands to millions of larvae (glochidia) that usually must attach to host fish tissue to complete their life cycle. This is an obligate parasitic stage of mussel larvae. However, less than one in onemillion find a suitable host and survive. The degree of host specificity varies among unionid species, from specialists that can successfully parasitize only one or a few closely related fish species to generalists that can complete development on a taxonomically broad range of fish species. In addition, freshwater mussels are among the most threatened groups of animals. This is due to habitat destruction, the …
Population structure, life cycle, and trophic niche of the glacial relict amphipod, Gammaracanthus lacustris, in a large boreal lake
2019
Ecology of the glacial relict macrocrustacean Gammaracanthus lacustris, a rare inhabitant of deep Fennoscandian lakes, is poorly understood. We studied the life cycle and trophic position of this cold‐stenothermic amphipod in Lake Paasivesi, eastern Finland. The study is based on intensive sampling and analyses of fatty acid composition as well as stable carbon (δ13C) and nitrogen (δ15N) isotope ratios. Both day and night, the G. lacustris population occurred at depths below 25 m at temperatures 40 mm and live up to 4 years. The oldest and the largest individuals and females seemed to favour the deepest zones. In October, almost 100% of females with length at least 25 mm (i.e. females presu…
Vieraslajin, komealupiinin (Lupinus polyphyllus), vaikutus koiranputken (Anthriscus sylvestris) kasvun allokointiin ja siemenpainoihin
2013
Vieraslajin leviäminen uudelle alueelle luo haasteita niin vieras- kuin paikalliselle lajille. Molempien lajien on sopeuduttava ja vastattava toistensa aiheuttamiin valintapaineisiin. Koska vieraslajit ovat monesti uudessa ympäristössä voimakkaita kilpailijoita, ja siten vaikuttavat muihin lajeihin sekä ympäristöönsä voimakkaasti ja jopa haitallisesti, on mahdollista, että vieraslajin kanssa esiintyvissä paikallisissa lajeissa on havaittavissa muutoksia niiden elinkiertopiirteissä. Vaikka kilpailun tiedetään olevan yksi merkittävimpiä valintapaineita, tietoa vieraslajien vaikutuksista yksittäisiin suomalaisiin lajeihin on vähän. Tutkimalla vieraslajin aiheuttamia evolutiivisia muutoksia pai…
Yläkouluun siirtyneiden oppilaiden kalojen lajintuntemus
2013
Children are studying fishes in the 5th and 7th grades in Finland, so they get basic knowledge about fishes that live in Finland. In upper comprehensive school almost all pupils have tried fishing during their life. The aim of this study was to find out how well 7th grade students are able to identify fish species. In addition, I tried to identify factors that influence possible differences in these skills between the pupils. The material was collected from 12 upper comprehensive schools. The schools were located in three different regions. Each region had four schools, so that there were 2 urban and 2 countryside localities in each region. Altogether, 199 students participated in the surve…
Psychological Research on Martial Artists
2012
In this article, we problematize sport psychology research on martial artists and offer some suggestions for advancing our knowledge in this area of research and practice. First, we review the previous research in the field. Then we introduce “cultural praxis” as a theoretical framework that will guide our analysis. Finally, we engage sociological studies of female fighters in conjunction with the adopted theoretical lens to outline the limitations of sport psychological research with regards to the experiences of women. It seems that the majority of the studies have used the male athlete as the norm, while research on the female athlete remains limited and focused on “differences”. Focusin…