Arnis Bērziņš

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Theory predicts that animals in adverse conditions can decrease individual risks and increase long-term benefits by cooperating with neighbours. However, some empirical studies suggest that animals often focus on short-term benefits, which can reduce the likelihood that they will cooperate with others. In this experimental study, we tested between these two(More)
Empirical studies have shown that animals often focus on short-term benefits under conditions of predation risk, which reduces the likelihood that they will cooperate with others. However, some theoretical studies predict that animals in adverse conditions should not avoid cooperation with their neighbors since it may decrease individual risks and increase(More)
Several methods using bactericides, hydrostatic pressure, and post-package pasteurization technologies to control Listeria monocytogenes (LM) in ready-to-eat meats have been attempted. In addition to controlling LM contamination, any newly developed technology must have minimal effects on organoleptic properties. The objectives of this study were to: (1)(More)
In habitats where the density of breeding individuals is higher, breeding success has been shown to increase with the number of close conspecific and heterospecific neighbours. However, the mechanisms linking habitat quality, group size of prey individuals and offspring defence are poorly known. In this field study, we examined the relationships between(More)
Addendum to: Krams I, Berzins A, Krama T, Wheatcroft D, Igaune K, Rantala MJ. The increased risk of predation enhances cooperation. Proc R Soc B 2010; 277:513–8; PMID: 19846454; DOI: 10.1098/rspb.2009.1614. Empirical studies have shown that animals often focus on short-term benefits under conditions of predation risk, which reduces the likelihood that they(More)
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