Results 31 to 40 of about 43,799 (257)

First record of brown colouration of Atlantic cod (Gadus morhua, L.) from the North Sea

Oceanologia, 2014
This paper reports the biological characterisation of a specimen of Atlantic cod (Gadus morhua L.) with a unique brown colour, which is the first fish of this species with such a colouration recorded from European waters.
Agnieszka Rybczyk, Przemysław Czerniejewski, Joanna Rokicka-Praxmajer   +2 more
doaj   +1 more source

Design of laboratory cyclone separator for biogas purification

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2013
This article deals with calculation of a cyclone separator for biogas purification using physical and chemical methods. There is presented a methodology for determination of operating dimensions of the cyclone separator and description of principal ...
Marián Fodora, Ján Gaduš, Jan Mareček, Tomáš Vítěz, Viera Kažimírová   +4 more
doaj   +1 more source

Hemoglobin genotype has minimal influence on the physiological response of juvenile atlantic cod (Gadus morhua) to environmental challenges

, 2009
Hemoglobin (Hb) polymorphism in cod is associated with temperature‐related differences in biogeographical distribution, and several authors have suggested that functional characteristics of the various hemoglobin isoforms (HbIs) directly influence ...
Afonso, L. O. B., Busby, C. D., Gamperl, A. K., Hall, J. R., Hori, T. S. F.   +4 more
core   +1 more source

Temporal changes in the dietary niche of sympatric seals provides insight into the role of competition in population declines

Oikos, EarlyView.
Competition theory suggests that interspecific prey competition can result in changes to the dietary niche, but obtaining timeseries of data from sympatric species experiencing temporal variation in competition is challenging. Scotland is an important area for two species of seals, but over the past 20 years, populations of harbour seals Phoca vitulina
Izzy Langley, Philip S. Hammond, Paul M. Thompson, Graham J. Pierce, Lindsay J. Wilson, Ailsa J. Hall, Gordon D. Hastie, Debbie J. F. Russell   +7 more
wiley   +1 more source

From the brink of extinction to regulation: northern Europe's white‐tailed eagles now face density dependence and climate constraints after rapid population growth

Oikos, EarlyView.
Population growth reflects the combined influence of regulation and density‐independent factors operating through demographic processes. Under exceptional circumstances (e.g. populations recovering from near‐extinction), growth may initially be weakly regulated but typically slows as negative density dependence (NDD) sets in.
Bård‐Jørgen Bårdsen, Elisabeth Hansen, Jan Ove Bustnes   +2 more
wiley   +1 more source

Advances in methods for determining fecundity: application of the new methods to some marine fishes [PDF]

, 2009
Estimation of individual egg production (realized fecundity) is a key step either to understand the stock and recruit relationship or to carry out fisheries-independent assessment of spawning stock biomass using egg production methods.
Dominguez, Rosario, Greenwood, Lorraine N., Kjesbu, Olav S., Korta, Maria, Murua, Hilario, Saborido-Rey, Francisco, Thorsen, Anders, Witthames, Peter R.   +7 more
core  

A Scenario Tool for Sustainability Transformation in Fisheries and Beyond

Sustainable Development, EarlyView.
ABSTRACT The urgency to find sustainable management solutions intensifies with increasing natural resource scarcity. Resource sectors are usually characterized by diverse resource users. We developed a structured scenario tool designed to quantitatively assess policy options for achieving sustainability, accounting for ecological, economic and ...
Marie‐Catherine Riekhof, Tanja Hartig‐Thiemann, Christian Möllmann, Lotta Thaller, Rudi Voss, Heike Schwermer   +5 more
wiley   +1 more source

Variation in food availability affects the population age structure of Atlantic puffins Fratercula arctica in the Faroe Islands

Wildlife Biology, EarlyView.
Across their entire Atlantic breeding range, Atlantic puffins Fratercula arctica have experienced decreases in food availability, often leading to population declines. The species is one of the most numerous seabirds in Føroyar (the Faroe Islands, in English) but has faced apparent, unquantified population declines.
Anne N.M.A. Ausems, Dariusz Jakubas, Jens–Kjeld Jensen, Katarzyna Wojczulanis–Jakubas   +3 more
wiley   +1 more source

Antibiotic Resistance Profiles and ARG Detection from Isolated Bacteria in a Culture-Dependent Study at the Codfish Industry Level

Foods, 2023
The antibiotic resistance phenomenon horizontally involves numerous bacteria cultured from fresh or processed seafood matrix microbiomes. In this study, the identified bacteria from food-producing processes and industrial environments were screened for ...
Gianluigi Ferri, Carlotta Lauteri, Mauro Scattolini, Alberto Vergara   +3 more
doaj   +1 more source

Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea [PDF]

, 2008
Groundfish fisheries in the southeast Bering Sea in Alaska have been constrained in recent years by management measures to protect the endangered Steller sea lion (Eumetopias jubatus).
Conners, M. Elizabeth, Munro, Peter
core