Blar i Institutt for biologi på tittel
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Disruption of Melatonin, Serotonin, and Adenosine Receptors by Chemicals in Plastic Food Packaging
(Master thesis, 2022)Plast er et allsidig materiale med fordelaktige egenskaper, som holdbarhet, lav vekt og lave priser. Dette gjør materialet egnet for et bredt spekter av forbrukerprodukter. Plast er av stor samfunnsmessig interesse, blant ... -
Disruptive Effects of Organohalogenated Contaminants on Thyroid Hormone Levels in Glaucous Gulls (Larus hyperboreus) breeding in Kongsfjorden, Svalbard
(Master thesis, 2014)The glaucous gull (Larus hyperboreus) is a predator and scavenger occupying an upper position in the arctic marine food web. This species is exposed to high levels of a variety of anthropogenic pollutants thought to cause ... -
Dissecting Contrasts in Cell Death, Hormone, and Defense Signaling in Response to Botrytis cinerea and Reactive Oxygen Species
(Peer reviewed; Journal article, 2021)Plants require interaction between signaling pathways to differentiate and integrate stress responses and deploy appropriate defenses. The hormones ethylene, salicylic acid (SA), and jasmonic acid (JA) are important ... -
Dissimilar effects of organohalogenated compounds on thyroid hormones in glaucous gulls
(Journal article; Peer reviewed, 2017)The glaucous gull (Larus hyperboreus) is an arctic top predator and scavenger exposed to high levels of mixtures of organohalogenated contaminants (OHCs) of which many interfere with the thyroid hormone (TH) system. In the ... -
Distinguishing animal personality and innovation in the guppy - the effect of sex and body size
(Master thesis, 2015)How individuals within the same population show consistent differences in different behaviours, i.e. animal personalities, and how these correlate into a wider behavioural syndrome has become a hot topic in behavioural ... -
Distribution and bioaccumulation of POPs and mercury in the Ga-Selati River (South Africa) and the rivers Gudbrandsdalslågen and Rena (Norway)
(Journal article; Peer reviewed, 2018)Biomagnification of Hg and persistent organic pollutants (POPs: polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs)) in aquatic food chains can lead to high pollutant ... -
The distribution and impact of an invasive plant species (Senecio inaequidens) on a dune building engineer (Calamagrostis arenaria)
(Peer reviewed; Journal article, 2022)Disturbance is thought to enhance the probability of invasive species establishment, a prerequisite for naturalisation. Coastal dunes are characterised by disturbance in the form of sand dynamics. We studied the effect of ... -
Distribution and maternal transfer of arsenic, cadmium, mercury, lead and selenium in Baikal seals (Phoca sibirica)
(Master thesis, 2013)Concentrations of arsenic, cadmium, mercury, lead and selenium were determined in the muscles, brains, adrenal and thyroid glands, gonads, livers, kidneys and hair of pups and adult females of Baikal seals. Low concentrations ... -
Distribution Patterns of Human Elephant Conflict in Areas Adjacent to Rungwa Game Reserve, Tanzania
(Master thesis, 2016)Abstract Human pressure on terrestrial ecosystems has caused loss and fragmentation of habitats for wildlife species. That has brought humans and wildlife in close proximity intensifying human wildlife conflicts, especially ... -
Distribution, interspecific variation and habitats of scyphozoan polyp colonies in Trondheimsfjorden
(Master thesis, 2019)Manetoppblomstringer er fremdeles et emne med høy økonomisk og økologisk betydning. Det er også en pågående debatt om hvorvidt frekvensen og intensiteten av maneoppblomstringer øker eller ikke. Kombinert med tvetydige data ... -
Diurnal and nocturnal movements of Kori Bustards in the Serengeti ecosystem
(Peer reviewed; Journal article, 2022)Although Kori Bustards (Ardeotis kori) are reported as diurnal, the species’ activity patterns have not been assessed to date. We report on the movement during different parts of the day of eight GPS-tagged individuals in ... -
Divergence and constraint in the thermal sensitivity of aquatic insect swimming performance
(Peer reviewed; Journal article, 2020)Environmental temperature variation may play a significant role in the adaptive evolutionary divergence of ectotherm thermal performance curves (TPCs). However, divergence in TPCs may also be constrained due to various ... -
Divergence in rates of phenotypic plasticity among ectotherms
(Peer reviewed; Journal article, 2022)An individual's fitness cost associated with environmental change likely depends on the rate of adaptive phenotypic plasticity, and yet our understanding of plasticity rates in an ecological and evolutionary context remains ... -
Divergence in Thermal Reaction Norms of Life-History Traits Among Populations of Daphnia magna
(Master thesis, 2018)Patterns of phenotypic and genetic variance in thermal reaction norms allow predicting evolutionary response for a population. The ability of phenotypic traits to respond to selection depends on their genetic variance, and ... -
Diversity and seasonal development of large zooplankton along physical gradients in the Arctic Barents Sea
(Peer reviewed; Journal article, 2023)Due to ongoing climate change, a new Arctic Ocean ecosystem is emerging. Within the framework of the Nansen Legacy project, we investigated the community composition of the large zooplankton and its seasonal development ... -
Diversity of fish inside and around hydrothermal vent fields on the Arctic Mid-Ocean Ridge.
(Master thesis, 2023)Etterspørselen av mineraler øker globalt, og med det grønne skiftet trengs det løsninger for å håndtere den betydelige økningen i produksjonen av for eksempel elektriske kjøretøy og vindturbiner. Sjeldne jordarter og ... -
Diversity of parasitic cuckoos and their hosts in China
(Journal article, 2012)In this exposé we provide the first review of host use by brood parasitic cuckoos in a multiple-cuckoo system in China, based on our own long-term field data and a compilation of observations obtained from the literature. ... -
Diversity, Loss, and Gain of Malaria Parasites in a Globally Invasive Bird
(Journal article; Peer reviewed, 2011)Invasive species can displace natives, and thus identifying the traits that make aliens successful is crucial for predicting and preventing biodiversity loss. Pathogens may play an important role in the invasive process, ... -
DNA barcoding of weevils (Coleoptera: Curculionidae) to disentangle the pollination network of the weevil-aroid community in a lower montane rainforest in Colombia
(Master thesis, 2024)I lavere fjell-regnskoger i Colombia eksisterer det høyt spesialiserte og komplekse snutebille-Araceae-pollineringssystem med avkoms-sted pollinerings mutualisme (BSPM). Snutebille-stammene Derelomini og Acalyptini ... -
DNA double strand breaks and chemical elements in incubating female common eiders (Somateria mollissima) in Christiansø, Denmark.
(Master thesis, 2018)Genotoxic agents are ubiquitous in the Baltic Sea and may cause effects not only at a molecular level but at an individual and population level as well. Fasting during reproduction may lead to a state of oxidative stress ...