Results 11 to 20 of about 10,296 (263)

Extermination of Gyrodactylus salaris – infected Atlantic salmon Salmo salar by rotenone treatment in the river Vikja, Western Norway

open access: yesFauna Norvegica, 1989
Infections by Gyrodactylus salaris of Atlantic salmon in the river Vikja were discovered in 1981. To prevent further spreading of the parasite to neighbouring rivers in the Sognefiord area, the river was treated with rotenone in November 1981 and in May
Bjørn Ove Johnsen   +2 more
doaj   +1 more source

Population dynamics of Müllerian mimicry under interspecific competition

open access: yesEcological Modelling, 2009
Abstract We ask what the effects of mutualism on population dynamics of two competitive species are. We model the population dynamics of mutualistic interactions with positive density- and frequency-dependences. We specifically assume the dynamics of Mullerian mimicry in butterflies, where the mortality of both species is reduced depending on the ...
Fuga Kumazawa   +6 more
openaire   +1 more source

Susceptibility and resistance of minnows, Phoxinus phoxinus (L.) to Gyrodactylus salaris Malmberg, 1957 (Monogenea) under laboratory conditions

open access: yesFauna Norvegica, 1990
The host susceptibility and resistance of minnows, Phoxinus phoxinus, to Gyrodactylus salaris was examined under laboratory conditions. The following experiments were carried out: transmission rate was examined by exposure of uninfected minnows to ...
Tor A. Bakke, Laura A. Sharp
doaj   +1 more source

Notes on Norwegian marine Amphipoda. 10. Scavengers and fish associates

open access: yesFauna Norvegica, 1985
The dominant group of carrion-eating amphipods in Norway are the Lysianassoidea; they play an important role as scavengers in Norwegian and arctic waters. A number of genera damage fish caught in nets and on long-lines; in Norway the most serious damage
Wim Vader, Kirsi Romppainen
doaj   +1 more source

First record of gooseneck barnacles Conchoderma auritum on a minke whale Balaenoptera acutorostrata

open access: yesFauna Norvegica, 1986
Clusters of a stalked barnacle, identified as Conchoderma auritum were found attached to both damaged and complete baleen plates of a male minke whale caught off the coast of East Greenland on 16 July 1984.
Ivar Christensen
doaj   +1 more source

Survey of antibodies against Francisella tularensis and some enteropathogenic bacteria in the Hooded Crow Corvus corone cornix

open access: yesFauna Norvegica, 1983
Eighty-two hooded crows Corvus corone cornix L., 1758, were trapped in December 1980 using a great Norwegian Hooded Crows Trap in Grorud-dalen, Oslo, Norway.
Ørjan Olsvik, Bjørn B. Berdal
doaj   +1 more source

The dynamics of lncRNAs transcription in interspecific F1 allotriploid hybrids between Brassica species

open access: yesGenomics, 2022
Interspecific hybridization is the intrinsic forces behind genome evolution. Long non-coding RNAs (lncRNAs) are important for plant biological processes regulation. However, it is unclear that these non-coding fractions are impacted by interspecific hybridization.
Chengtao, Quan   +10 more
openaire   +2 more sources

Resource and seasonality drive interspecific variability in a Dynamic Energy Budget model [PDF]

open access: yes, 2021
ABSTRACTAnimals show a vast array of phenotypic traits in time and space. These variation patterns have traditionally been described as ecogeographical rules; for example, the tendency of size and clutch size to increase with latitude (Bergman’s and Lack’s rules, respectively).
Joany Mariño   +3 more
openaire   +1 more source

Ecology of the Suldalslågen river in western Norway before its regulation

open access: yesFauna Norvegica, 1984
The River Suldalslågen, 22 km in length, situated in Rogaland province in western Norway, has been studied over a period of four years. The macro-invertebrate benthos was low in abundance especially in August and September.
Albert Lillehammer
doaj   +1 more source

Notes on Norwegian marine Amphipoda. 8. Amphipods found in association with sponges and tunicates

open access: yesFauna Norvegica, 1984
Nineteen amphipod species in seven different families have been recorded living on or in Porifera and/or Tunicata in Norwegian waters. Of these Laothoes meinerti, Cheirimedon latimanus and two species of Paramphithoidae are confined to sponges, while ...
Wim Vader
doaj   +1 more source

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