Search results for "Bernat"

Overwintering Site Fidelity in the European Pond Turtle (Emys orbicularis) in Western Poland

2015

The location of overwintering sites of six male and six female European pond turtles (Emys orbicularis) were studied using radiotelemetry in Western Poland, over a period of four consecutive seasons. Most of the studied individuals overwintered in the same area during the research; most distances between two consecutive overwintering sites were 0–25 m. However, changes related to the overwintering area were observed, and in such cases the distance between overwintering sites on two consecutive seasons could exceed 2 km. These results can support an efficient conservation strategy of the turtle population.

[Mossen Ausias March, poeta]

Ms Títol pres del llom Col·lació: Paper, f. ii (paper) + 175 + ii (paper) ; foliació original en xifres aràbigues (f. 1-9) i en xifres romanes des del f. 10 (salt en la foliació, del 21 al 496, i de 125 a 127) ; foliació moderna a llapis (f. 1-175) els f. 102, 173-175 en blanc ; filigranes Composició: Escrit a línia tirada Escriptura: Humanística cursiva, escrit per diferents mans, de la fi del segle s. XV fins al segle XVI Enquadernació: Del segle XVII, en pergamí sobre cartó. Al llom: "Mosen Ausias March. Poeta" Origen: Escrit a la fi del segle XV i al llarg del segle XVI tot atenent a les filigranes i a les mans Signatura anterior: 92-6-7 Signatura actual: València, Universitat de Valènc…

Fly-and-Forage Strategy in the Bat Pipistrellus nathusii During Autumn Migration

2012

Populations of Pipistrellus nathusii (Nathusius's bat), an insectivorous aerial-hawking species that breeds in north-eastern Europe, perform long-distance migrations between breeding sites and hibernation areas in central and southern Europe. The feeding strategy of migrating P. nathusii was investigated in Latvia on the east coast of the Baltic Sea, exploring evidence for and against two non-mutually exclusive predictions that i) the bats feed shortly after dusk at highest aerial insect activity and continue to migrate thereafter or ii) apply a ‘fly-and-forage’ strategy and frequently interrupt their migration flight to feed. Echolocation calls and feeding buzzes of P. nathusii were record…

Prehibernation and hibernation effects on the D-3-hydroxybutyrate dehydrogenase of the heavy and light mitochondria from liver jerboa (Jaculus orient…

2007

The D-3-hydroxybutyrate dehydrogenase (BDH) (EC 1.1.1.30) from liver jerboa (Jaculus orientalis), a ketone body converting enzyme in mitochondria, in two populations of mitochondria (heavy and light) has been studied in different jerboa states (euthermic, prehibernating and hibernating). The results reveal: (1) important variations between states in terms of ketones bodies, glucose and lipid levels; (2) significant differences between the BDH of the two mitochondrial populations in term of protein expression and kinetic properties. These results suggest that BDH leads an important conformational change depending on the physiological state of jerboa. This BDH structural change could be the c…

Peroxisomal changes during hiberation of jerboa (Jaculus orientalis)

1998

As a member of the order of Rodentia, jerboa (Jaculus orientalis) is a natural deep hibernator and lives in subdesert highland in many parts of the world, including Morocco. Its small size (adult body weight ∼100 g), availability in the wild, tolerance to laboratory conditions, and some unique peroxisomal properties make it a suitable research subject for exploring peroxisome biogenesis under prehibernating and hibernating states. During 3 w, animals referred to as the prehibernator group were exposed to cold temperature (5 to 7°C) with food ad libitum. Part of the prehibernator group entered deep hibernation 24 to 48 h after starvation. Animals were sacrificed 4 and 6 d after starting hibe…

Food Habits of the Javelin Sand Boa Eryx jaculus (Linnaeus 1758; Serpentes, Erycidae) in Sicily, Italy

2021

The Javelin Sand Boa, Eryx jaculus, is reported to be a predator of mammals, lizards and their eggs, and occasionally of birds and invertebrates, but data on its diet are scarce and fragmentary. Here we describe some aspects of the feeding behavior of E. jaculus on the Mediterranean island of Sicily. A total of 132 individual snakes were examined. Prey remains were found in 43% of them, both in their feces (82.5%) and gut contents (17.5%). The number of snakes observed and their feeding rate decreased in August, probably as a result of the relatively higher temperatures. Feeding rate increases were observed in adult females in September, perhaps to enhance body reserves before hibernation. …

Peroxisome proliferator-activated receptors as regulators of lipid metabolism; tissue differential expression in adipose tissues during cold acclimat…

2004

Brown (BAT) and white (WAT) adipose tissues play a key role in the body energy balance orchestrated by the central nervous system. Hibernators have developed a seasonal obesity to respond to inhospitable environment. Jerboa is one of the deep hibernator originated from sub-desert highlands. Thus, this animal represents an excellent model to study cold adaptation mechanism. We report that the adipogenic factor PPARgamma exhibits a differential expression between BAT and WAT at mRNA level. A specific induction was only seen in WAT of pre-hibernating jerboa. Interestingly, PPAR beta/delta is specifically induced in BAT and brain of pre-hibernating jerboa, highlighting for the first time the po…

Dante en la cultura Catalana a l'entorn del casal de Barcelona (1381-1410/12)

2016

This article analyzes in a historical context the earliest evidences of Dante’s influence on Catalan culture during the reigns of Kings Peter IV, John I and Martin of Aragon, until the interregnum (1410-12) and the change of dynasty resulting from the Compromise of Caspe (1412). French courts, Avignon papal curia and the close personal, political and dynastic ties between the kingdoms of Sicily and Aragon constitute the background on which this paper studies the many echoes of Dante —from the Commedia, from the commentaries on Dante and from the so-called silloge boccaccesca— to be found around the chancellery and the court of Aragon: specifically, in Bernat Metge’s Llibre de Fortuna e Prud…

Retórica forense y ars dictaminis en Lo somni, de Bernat Metge

2014

Resumen: Partiendo de la existencia de un propósito de autodefensa en el origen de Lo somni, y tomando como base la evidente formación retórica y dictaminal de su autor, es posible señalar numerosos elementos que se encuadran dentro del género retórico, concretamente del forense o judicial, y también otros pertenecientes al ars dictaminis, ambos géneros cargados de aspectos formales y a priori difícilmente adaptables a un texto de ficción literaria. Estos rasgos retóricos y dictaminales están tan integrados en el estilo del autor que fluyen de forma completamente natural en el texto, en un bello ejemplo de fusión literaria, jurídica y dictaminal. Palabras clave: autodefensa, retórica, ars d…

Hibernation impact on the catalytic activities of the mitochondrial D-3-hydroxybutyrate dehydrogenase in liver and brain tissues of jerboa (Jaculus o…

2003

Abstract Background Jerboa (Jaculus orientalis) is a deep hibernating rodent native to subdesert highlands. During hibernation, a high level of ketone bodies i.e. acetoacetate (AcAc) and D-3-hydroxybutyrate (BOH) are produced in liver, which are used in brain as energetic fuel. These compounds are bioconverted by mitochondrial D-3-hydroxybutyrate dehydrogenase (BDH) E.C. 1.1.1.30. Here we report, the function and the expression of BDH in terms of catalytic activities, kinetic parameters, levels of protein and mRNA in both tissues i.e brain and liver, in relation to the hibernating process. Results We found that: 1/ In euthemic jerboa the specific activity in liver is 2.4- and 6.4- fold high…