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Consortium of Swiss Academic Libraries

Evolution of Multilevel Social Systems in Nonhuman Primates and Humans

Grueter, Cyril ; Chapais, Bernard ; Zinner, Dietmar

In: International Journal of Primatology, 2012, vol. 33, no. 5, p. 1002-1037

Université de Fribourg

Arginase-ii deficiency extends lifespan in mice

Xiong, Yuyan ; Yepuri, Gautham ; Montani, Jean-Pierre ; Ming, Xiu-Fen ; Yang, Zhihong

In: Frontiers in Physiology, 2017, vol. 8, p. -

The mitochondrial arginase type II (Arg-II) has been shown to interact with ribosomal protein S6 kinase 1 (S6K1) and mitochondrial p66Shc and to promote cell senescence, apoptosis and inflammation under pathological conditions. However, the impact of Arg-II on organismal lifespan is not known. In this study, we demonstrate a significant lifespan extension in mice with Arg-II gene deficiency...

Université de Fribourg

Male mutation bias is the main force shaping chromosomal substitution rates in monotreme mammals

Link, Vivian ; Aguilar-Gómez, Diana ; Ramírez-Suástegui, Ciro ; Hurst, Laurence D. ; Cortez, Diego

In: Genome Biology and Evolution, 2017, vol. 9, no. 9, p. 2198–2210

In many species, spermatogenesis involves more cell divisions than oogenesis, and the male germline, therefore, accumulates more DNA replication errors, a phenomenon known as male mutation bias. The extent of male mutation bias (α) is estimated by comparing substitution rates of the X, Y, and autosomal chromosomes, as these chromosomes spend different proportions of their time in the...

Consortium of Swiss Academic Libraries

Behavioral type and growth rate in a cichlid fish

Heg, Dik ; Schürch, Roger ; Rothenberger, Susan

In: Behavioral Ecology, 2011, vol. 22, no. 6, p. 1227-1233

Université de Fribourg

Osteology, fossil record and palaeodiversity of the European lizards

Villa, Andrea ; Tschopp, Emanuel ; Georgalis, Georgios L. ; Delfino, Massimo

In: Amphibia-Reptilia, 2017, vol. 38, no. 1, p. 79–88

he capability of palaeontologists to identify fossil remains of a particular group of vertebrates strongly depends on the knowledge they have of its comparative osteology and on the actual presence of diagnostic differences among the considered taxa. This could have a relevant influence on the study of palaeodiversity, since a low recognisability causes a loss of data when trying to...