Search results for "Vulpes"

Presencia de Vulpes praeglacialis (Kormos, 1932) en el yacimiento pleistoceno de la Sierra de Quibas (Abanilla, Murcia)

2006

We describe the first remains of Canidae from the Lower Pleistocene karstic locality of Quibas (Abanillas, Murcia) that increasing the representation of carnivores in this site. These fossils are identified as Vulpes praeglacialis, the typical Lower Pleistocene fox. This assignment is based on their small size and the poorly developed posterior cuspid of the p/3.

Trematodes Alaria alata raksturojums dažādās infrapopulācijās Latvijā un ģints analīze, pielietojot molekulārās bioloģijas metodes

2015

Pētījuma mērķis bija noteikt Alaria alata sastopamību dažādās infrapopulācijās Latvijā un veikt ģints filoģenētisko koku analīzi. Pētījuma gaitā tika noteikta A. alata sastopamība meža cūkās (77%), lapsās (88%) un jenotsuņos (84%). Baltijas valstīs ekstensitāte definitīvajos saimniekos ir līdzīga. Salīdzinot divas mezocerkāriju klātbūtnes noteikšanas metodes, tika konstatēts, ka, pielietojot Alaria migrācijas metodi, mezocerkārijus konstatē 10 reizes biežāk salīdzinot ar līdz šim izmantoto metodi. Kā piemērotākais A. alata DNS izdalīšanas reaģentu komplekts tika atzīts DNeasy Blood&Tissue Kit ar palielinātu proteināzes K daudzumu (25μl) un pagarinātu inkubācijas laiku (līdz 15h). Konstruējo…

Mother knows best: dominant females determine offspring dispersal in red foxes (Vulpes vulpes).

2011

Background: Relatedness between group members is central to understanding the causes of animal dispersal. In many group-living mammals this can be complicated as extra-pair copulations result in offspring having varying levels of relatedness to the dominant animals, leading to a potential conflict between male and female dominants over offspring dispersal strategies. To avoid resource competition and inbreeding, dominant males might be expected to evict unrelated males and related females, whereas the reverse strategy would be expected for dominant females. Methodology/Principal Findings: We used microsatellites and long-term data from an urban fox (Vulpes vulpes) population to compare disp…

Harmonizing circumpolar monitoring of Arctic fox: benefits, opportunities, challenges and recommendations.

2017

Source at http://dx.doi.org/10.1080/17518369.2017.1319602 The biodiversity working group of the Arctic Council has developed pan-Arctic biodiversity monitoring plans to improve our ability to detect, understand and report on long-term change in Arctic biodiversity. The Arctic fox (Vulpes lagopus) was identified as a target of future monitoring because of its circumpolar distribution, ecological importance and reliance on Arctic ecosystems. We provide the first exhaustive survey of contemporary Arctic fox monitoring programmes, describing 34 projects located in eight countries. Monitored populations covered equally the four climate zones of the species’ distribution, and there were large dif…

Analisi dell’età in un campione siciliano di volpe (Vulpes vulpes L.).

2008

Biological interactions in the boreal ecosystem under climate change : are the vole and predator cycles disappearing?

2014

Gastrointestinal parasites of two populations of Arctic foxes (Vulpes lagopus) from north-east Greenland

2017

Parasitological examination of 275 faecal samples from Arctic foxes (Vulpes lagopus) collected at Zackenberg Valley and Karupelv Valley in north-east Greenland from 2006 to 2008 was conducted using sieving and microscopy. Overall, 125 (45.5%) samples contained parasite eggs of Taenia crassiceps, Taenia serialis, Toxascaris leonina, Eucoleus boehmi, Physalopteridae and Ancylostomatidae, and Strongyloides-like larvae. As long-term ecological studies are conducted at both sampling locations, the present findings constitute a baseline data set for further parasitological monitoring.

2006

We describe the first remains of Canidae from the Lower Pleistocene karstic locality of Quibas (Abanillas, Murcia) that increasing the representation of carnivores in this site. These fossils are identified as Vulpes praeglacialis, the typical Lower Pleistocene fox. This assignment is based on their small size and the poorly developed posterior cuspid of the p/3.

Tree visitation and seed dispersal of wild cherries by terrestrial mammals along a human land-use gradient

2010

Abstract The role of terrestrial mammals as seed dispersers of fleshy-fruited plants has only rarely been investigated in temperate regions although recent studies underline the importance of these animals for long-distance seed dispersal. Here we examine the potential role of mammals as seed dispersers of wild cherry (Prunus avium L.) along a gradient of human land-use intensity. We placed camera traps at 21 wild cherry trees to identify the mammal species that visited the trees. We conducted feeding trials to test if the recorded species were legitimate seed dispersers or seed predators and to assess gut passage times. We tested the influence of human land-use intensity by quantifying hab…

Data from: Effects of food abundance and early clutch predation on reproductive timing in a high Arctic shorebird exposed to advancements in arthropo…

2017

Climate change may influence the phenology of organisms unequally across trophic levels and thus lead to phenological mismatches between predators and prey. In cases where prey availability peaks before reproducing predators reach maximal prey demand, any negative fitness consequences would selectively favor resynchronization by earlier starts of the reproductive activities of the predators. At a study site in northeast Greenland, over a period of 17 years, the median emergence of the invertebrate prey of Sanderling Calidris alba advanced with 1.27 days per year. Yet, over the same period Sanderling did not advance hatching date. Thus, Sanderlings increasingly hatched after their prey was m…