Mesacanthus is a common and speciose genus of acanthodian fish from Lower Old Red Sandstone and Middle Old Red Sandstone assemblages (representing the Lower Devonian and Middle Devonian respectively) and is well represented in many palaeoichthyology collections in the UK. Based upon descriptions given during the 19th century, specimens of the genus Mesacanthus from the Orcadian Basin and Midlan...

in the present study, we reported the results of the monitoring and investigations of the ichthyofauna of the beshar river, one of the tributaries of the tigris−euphrates basin in kohkiluyeh and boyer-ahmad province, southwest of iran. the results showed that during a period from 2010 to 2011, a total of 13 fish species belonging to 4 families and 3 orders were recorded in the beshar river. the...

the osteological characteristics is an important tool for clarification of the phylogenetic statue of the family nemechelidae. since any information is available about osteological features of the genus turcinoemacheilus , hence the present study provides a detailed osteological characteristics of the turcinoemacheilus hafezi as representative of this genus. ten specimens of t. hafezi were coll...

in this paper, the metazoan parasite community system of capoeta damascina in the tigris basin (mesopotamian region) in the middle-east is presented. overall, 54 species have been identified. between 2005 and 2008, iranian surveys of capoeta damascina found a total of 47 metazoan parasites species, most identified to species level. in addition, 6 parasite species from iraq and 1 species from oc...

any part of the Ottoman or Persian dominions, took everybody by surprise, and few would believe at first that the outbreak was really one of the dreaded Asiatic scourge. The rise of the Euphrates and Tigris in 1889 was insignificant. Navigation in the great canal of Shat-el-Hai, which connects the Tigris with the Euphrates, ceased in May, and the extensive marsh lying between Shatra and Nasriye...

Tiger (Panthera tigris tigris) population in their historic ranges is critically endangered owing to habitat destructions, ruthless poaching and retaliatory killing. The tiger population now remains in few thousands located in about 150 fragments in 13 countries (Karanth and Gopal, 2005). However, declination is also associated with health related problems such as nutritional deficiencies and i...

A 3-week-old female white Bengal Tiger cub (Panthera tigris tigris) presented with acute onset tachypnoea, cyanosis and hypothermia. The cub was severely hypoxaemic with a mixed acid-base disturbance. Echocardiography revealed severe pulmonic stenosis, right ventricular hypertrophy, high membranous ventricular septal defect and an overriding aorta. Additionally, an atrial septal defect was foun...

The project appraisal method in the Netherlands distinguishes direct effects, indirect distribution effects and indirect generative effects. In general transport models are available for calculating the benefits of transport projects to travellers as part of the direct effects. The TIGRIS XL model, a Land-Use and Transport Interaction model, adds indirect distribution effects for the housing an...

A Geographic Information System (GIS) requires both interactive edit/query, and power-ful spatial analysis capabilities -for large volumes o-f geographic data. This spatial analysis requirement has led to the investigation o-f the mathematical -field o-f topology. The major problems o-f previous topological systems have been the construction o-f a logically consistent topological structure and ...

We investigate the evolutionary history of the wide-ranging Nearctic treefrog Hyla arenicolor through the integration of extensive range-wide sampling, phylogenetic analyses of multilocus genetic data, and divergence dating. Previous phylogeographic studies of this frog documented a potential signature of introgressive hybridization from an ecologically and morphologically divergent sister spec...