... the mechanistic basis of fitness costs. Fourth, I propose the ‘redox signalling hypothesis’ of life history to complement the current ‘oxidative stress hypothesis’ of life history. The latter states that oxidative damage underlies trade-offs because it affects traits like growth, reproduction or cell senescence...

... for navigation, course-control or habitat selection. Within the past two decades it has been recognised that polarised light, reflected, blocked or transmitted by some animal and plant tissues, may also provide signals that are received or sent between or within species. Much as animals use colour and colour...

...Catherine Gaitanaki; Theodora Kalpachidou; Ioanna-Katerina S. Aggeli; Panagiota Papazafiri; Isidoros Beis SUMMARY Mitogen-activated protein kinases (MAPKs) constitute one of the most important intracellular signalling pathways. In particular, the p38-MAPK subfamily is known to be activated under...

...Erene Kefaloyianni; Eleni Gourgou; Vanessa Ferle; Efstathios Kotsakis; Catherine Gaitanaki; Isidoros Beis SUMMARY We investigated the effects of various heavy metals such as copper, zinc and cadmium, as well as acute thermal stress, on the signalling mechanisms involved in the protection...

...L. M. Mäthger; E. J. Denton SUMMARY Observations were made of the reflective properties of the iridophore stripes of the squid Alloteuthis subulata and Loligo vulgaris , and the likely functions of these stripes are considered in terms of concealment and signalling. In both species, the mantle...