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The structural properties of the hemocyanin isolated from the Mediterranean mud shrimp, Upogebia pusilla (Decapoda: Thalassinidea), were investigated. Our intent was to make use of the U. pusilla case to perform a structural comparison between crustacean and chelicerate 4x6-meric hemocyanins. The thalassinidean hemocyanin appears similar in size but(More)
The hemocyanin of the tiger shrimp, Penaeus monodon, was investigated with respect to stability and oxygen binding. While hexamers occur as a major component, dodecamers and traces of higher aggregates are also found. Both the hexamers and dodecamers were found to be extremely stable against dissociation at high pH, independently of the presence of calcium(More)
Integrating long-term ecological observations with experimental findings on species response and tolerance to environmental stress supports an understanding of climate effects on population dynamics. Here, we combine the two approaches, laboratory experiments and analysis of multi-decadal time-series, to understand the consequences of climate anomalies and(More)
Several studies have considered the direct and indirect effects of demersal trawling on discarded species in terms of sublethal damages, survival, and stress due to the fishing processes. Nevertheless the effects of air temperature on the physiological stress and the survival of species during sorting operations were only marginally explored. This factor(More)
The onset of and recovery from physiological stress in Liocarcinus depurator (Decapoda: Portunidae), that were trawled and subjected to emersion during fishing activities, was analysed in a field study in the Northern Adriatic Sea. Our working hypothesis intended to assess the development of physiological impairment due to air exposure during sorting(More)
Although thermal performance is widely recognised to be pivotal in determining species' distributions, assessment of this performance is often based on laboratory-acclimated individuals, neglecting their proximate thermal history. The thermal history of a species sums the evolutionary history and, importantly, the thermal events recently experienced by(More)
As a fly tracking the availability of fruits along climatic gradients, Drosophila suzukii is deemed to be rather flexible in relation to environmental factors, among which temperature is a major player. We sampled potential wild host fruits of D. suzukii along two elevational gradients in mountain areas of north-eastern Italy, in order to measure fly(More)
Crustacean hemocyanin (Hc) represents a unique case of molecular heterogeneity among oxygen-carrying proteins. The existence of different genes, encoding single polypeptide chains, constitutes the genetic basis for the inter- and intra-specific polymorphism. In addition, the large number of Hc subunits within crustacean species, together with their flexible(More)
The transition to air-breathing by formerly aquatic species has occurred repeatedly and independently in fish, crabs and other animal phyla, but the proximate drivers of this key innovation remain a long-standing puzzle in evolutionary biology. Most studies attribute the onset of air-breathing to the repeated occurrence of aquatic hypoxia; however, this(More)