Search results for "Fish"

Data from: Ancient DNA reveals the Arctic origin of Viking Age cod from Haithabu, Germany

2018

Knowledge of the range and chronology of historic trade and long-distance transport of natural resources is essential for determining the impacts of past human activities on marine environments. However, the specific biological sources of imported fauna are often difficult to identify, in particular if species have a wide spatial distribution and lack clear osteological or isotopic differentiation between populations. Here, we report that ancient fish-bone remains, despite being porous, brittle, and light, provide an excellent source of endogenous DNA (15–46%) of sufficient quality for whole-genome reconstruction. By comparing ancient sequence data to that of modern specimens, we determine …

Data from: Fishing pressure impacts the abundance gradient of European lobsters across the borders of a newly established marine protected area

2018

Marine protected areas (MPAs) are considered as viable fisheries management tools due to their potential benefits of adult spillover and recruitment subsidy to nearby fisheries. However, before-after-control-impact (BACI) studies that explore the biological and fishery effects of MPAs to surrounding fisheries are scarce. We present results from a fine-scale spatial gradient study conducted before and after the implementation of a 5km2 lobster MPA in southern Norway. A significant non-linear response in lobster abundance, estimated as catch-per-unit-effort (CPUE) from experimental fishing, was detected within two years of protection. After 4 years, CPUE values inside the MPA had increased by…

Data from: Personalities influence spatial responses to environmental fluctuations in wild fish

2018

1. Although growing evidence supports the idea that animal personality can explain plasticity in response to changes in the social environment, it remains to be tested whether it can explain spatial responses of individuals in the face of natural environmental fluctuations. This is a major challenge in ecology and evolution as spatial dynamics link individual- and population-level processes. 2. In this study we investigated the potential of individual personalities to predict differences in fish behaviour in the wild. Specifically, our goal was to answer if individual differences in plasticity of space use to sea surface temperature could be explained by differences in personality along the…

The cellular composition and morphological organization of the ventricular zone in the adult zebrafish telencephalon

2009

Fine Mapping of Gene Ordering by Elongated Chromosome Methods

2006

Publisher Summary Fluorescence in situ hybridization (FISH) can be used to localize specific DNA sequences on metaphase chromosomes, interphase nuclei, and experimentally extended DNA or chromatin fibers. Depending on the hybridization target, FISH techniques show widely different levels of DNA resolution. Mechanically stretched or elongated chromosomes fill the resolution gap between metaphase FISH and fiber FISH, allowing the rapid and straightforward ordering and localization of clones along the length of an entire chromosome with a 100- to 200-kb resolution. Although various genome projects have provided very high-resolution physical maps of human and important animal genomes, FISH is s…

Regenerative Medicine: Does Erythropoietin have a Role?

2009

Regenerative Medicine, a recent new medical domain, aims to develop new therapies through the stimulation of natural regenerative processes also in human beings. In this field, Erythropoietin (EPO) represents a significant subject of research. Several studies allow the assertion that EPO, in different concentrations, has protective effects mainly on the central nervous system, cardiovascular system and renal tissue. This action is carried out through one of few regenerative activities of human beings: angiogenesis. This mechanism, which involves endothelial stem cells and VEGF (Vascular Endothelial Growth Factor), has been experimentally demonstrated with Recombinant human erythropoietin (r…

The effect of two sulphur-containing pesticides, fenitrothion and endosulfan, on glutathione (GSH) content and on GSH S-transferase and gamma-glutamy…

1988

The glutathione (GSH) system of Procambarus clarkii (P.c.), the American red crayfish, is used as a marker of the effects of Fenitrothion (FT) and Endosulfan (ES), organophosphorus and organochlorinated insecticides, respectively. This system has been shown to be sensitive to different heavy metals poisoning, thus it has a double interest as marker for environmental contamination and as a potential source of xenobiotics or their metabolites to humans, since it is being fished commercially. The GSH content of the organ decreased 24 h after treatment with FT. FT promotes a 2-fold induction of GSH S-transferase (GST) activity at 6 h which is followed by a decrease of it at 24 h. The latter coi…

Hypolipidaemic effects of fenofibrate and fasting in the herbivorous grass carp (Ctenopharyngodon idella) fed a high-fat diet

2008

We investigated whether the hypolipidaemic effect of fenofibrate and fasting observed in most omnivorous mammals may also apply to herbivorous fish. Grass carp (Ctenopharyngodon idella) fed a high-fat (8 %) diet exhibited a marked increase in blood lipids and body fat after 6 weeks. They were then treated with fenofibrate (100 mg/kg body weight) in the same high-fat diet for 2 weeks, followed by fasting for 1 week. Plasma lipid concentration, body fat amount, fatty acid composition, plasma thiobarbituric acid-reactive substances and some parameters related to hepatic fatty acid oxidation were measured, and liver samples were stained for histological examination. Fenofibrate treatment decrea…

The spectrum of risk factors for contrast induced nephropathy in patients undergoing coronary angiography or intervention

2014

Abstract Introduction Contrast induced nephropathy is an unfavorable acute event which can complicate the clinical course of patients undergoing coronary angiography. Clinical characteristics predisposing to its occurrence are still rather obscure. Methods We enrolled 591 patients (mean age 64.2 ± 10.98; 449 male and 142 female) who underwent emergency or elective Coronary angiography/Angioplastic in our Cardiologic Division between 10/2006 and 06/2008, paying attention to their Cardiovascular risk factors, dose and type of contrast medium, type and number of affected coronary arteries, pharmacological therapies, baseline renal function and extracoronary atherosclerosis. We performed a univ…

Occurrence and timing of complications following traumatic dental injuries: A retrospective study in a dental trauma department

2016

Background This study explores the pattern of complications occurrence resulting from traumatic dental injuries, the relation of this pattern to the number of years from the time of the injury to its first diagnosis, and other contributing characteristics such as root development and trauma characteristic. Material and Methods Patients’ data treated following dental trauma from 2002 to 2014 were classified and grouped according to age, gender, tooth type, injury type, diagnosis and the time that elapsed between the traumatic event and the diagnosis of complications (TIC). The distribution function of the quantitative parameters was determined with the Kolmogorov-Smirnov test. Fisher exact t…