I Geilini 37

Faroe Islands

I Geilini 37

Faroe Islands
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Palma R.L.,Museum of New Zealand Te Papa Tongarewa | Jensen J.-K.,I Geilini 37
Norwegian Journal of Entomology | Year: 2016

During 10 years, from 2006 to 2015, samples of parasitic lice were collected and identified from 40 species of birds and four species of mammals in the Faroe Islands, resulting in 34 new records of species and subspecies, four genera, and 20 new host-louse associations for the islands. All these data are presented in this paper. These and previously published records bring the total number of parasitic lice known from the Faroe Islands to 251 species and subspecies (239 from birds and 12 from mammals) including 13 records identified at the generic level only. © 2016, Norwegian Journal of Entomology.

Jensen J.-K.,I Geilini 37 | Magnussen E.,Sudan University of Science and Technology
Norwegian Journal of Entomology | Year: 2017

The current investigation specifies the occurrence of four flea species living in the Faroe Islands: Ceratophyllus garei (Rothschild, 1902), Dasypsyllus gallinulae gallinulae (Dale, 1878), Leptopsylla segnis (Schönherr, 1811) and Ctenophthalmus nobilis (Rothschild, 1902). One of these species, C. garei, has never been reported in the Faroe Islands before. In addition, the flea species that have been reported in the Faroe Islands during the years 1929 to 2016 are listed. In total eleven species have been found. However, one of them, Pulex irritans (Linnaeus, 1758), has probably disappeared again. © Norwegian Journal of Entomology.

Jensen J.K.,i Geilini 37 | Hansen J.F.,Faroe Islands National Heritage | Nolso A.,Faroe Islands National Heritage
Norwegian Journal of Entomology | Year: 2013

The distribution, flight periods and sex ratios of blowflies of the family Calliphoridae (Diptera, Brachycera) in the Faroe Islands based on 3827 specimens collected throughout the archipelago are given. Five species: Calliphora vicina Robineau-Desvoidy, 1830, Calliphora uralensis Villeneuve, 1922, Calliphora vomitoria (Linnaeus, 1758), Cynomya mortuorum (Linnaeus, 1761), Protophormia terraenovae (Robineau-Desvoidy, 1830) were recorded, C. vomitoria for the first time. © Norwegian Journal of Entomology.

Jensen J.-K.,i Geilini 37 | Magnussen E.,Sudan University of Science and Technology
Norwegian Journal of Entomology | Year: 2015

During the years 2012 and 2013, 61 brown rats (Rattus norvegicus Berkenhout, 1769) were collected from 10 locations on the Faroe Islands and investigated for ectoparasites. Two species of fleas, Nosopsyllus fasciatus Bosc d'Antic, 1800 and Ctenophthalmus nobilis Rothschild, 1898, and one species of louse, Polyplax spinulosa Burmeister, 1839, were found. Of these, the fleas were the more frequent, found on 34% of the rats, whereas the occurrence of the single species of louse was only 3%. Of the fleas, N. fasciatus was the most common, found on 18 of the 23 the rats infected by fleas (78%), whereas the occurrence of C. nobilis was 48%. Both C. nobilis and P. spinulosa are new species for the fauna of the Faroe Islands; whereas N. fasciatus has been reported once before, then on a domestic cat (Felis catus Linnaeus, 1758). The finding of C. nobilis is both the most westerly and northerly finding of this species in Europe. © Norwegian Journal of Entomology.

PubMed | Public Health England, Faroese Museum of Natural History, Blomubrekka 54 and I Geilini 37
Type: Journal Article | Journal: Ticks and tick-borne diseases | Year: 2016

Ixodes ricinus ticks are expanding their geographic range in Europe, both latitudinally in Scandinavia, and altitudinally in the European Alps. This paper details the findings of both passive and active surveillance on the Faroe Islands. Active field surveillance, using tick dragging, was conducted at 38 sites across the main seven inhabited islands of the Faroes during June-August 2015. Field sampling was conducted at all wooded sites on the islands of Vgar, Streymoy, Eysturoy, Boroy, Kunoy and Suuroy as well as in urban parks in the capital Trshavn, among seabird colonies and at a bird observatory on Nlsoy, at moorland sites on Vgar and Boroy, and a coastal headland on Suuroy. In addition, as part of the promotion of a new passive surveillance scheme for the Faroes, new tick records were submitted during summer 2015 and early spring 2016. During tick dragging, only three questing I. ricinus ticks (two nymphs, one male) were found at two separate sampling locations in the village of Tvroyri on the southernmost island of Suuroy. No questing ticks were found at any other field site. The passive surveillance of ticks identified an additional 33 records of I. ricinus collected during the last 10 years on the Faroes, with almost half of these records from 2015. Although this represents the first finding of questing I. ricinus and overwintering I. ricinus on the Faroe Islands, there appears to be little evidence so far to suggest that Ixodes ricinus are established on the Faroe Islands. Additional reports of ticks through the passive surveillance scheme are reported from seven inhabited islands. Reports of ticks on both companion animals and humans suggest that ticks are being acquired locally, and the records of ticks on migratory birds highlight a possible route of importation. This paper details the likely ecological constraints on I. ricinus establishment and density on Faroe and makes recommendations for future surveillance and research.

Petersen A.,Brautarland 2 | Jensen J.-K.,I Geilini 37 | Jenkins P.,Natural History Museum in London | Bloch D.,Foroya Natturugripasavn | Ingimarsson F.,Natural History Museum of Kopavogur
Acta Chiropterologica | Year: 2014

The bats recorded from Iceland, the Faroe Islands, the Shetland Islands, the Orkney Islands, and North Sea installations are reviewed to the end of 2012. In total 12 species have been positively identified, while a considerable proportion of all records are sightings of unidentified bats. Eight of the species are European in origin and four originate from the New World. The largest number of species (8) has been recorded in Iceland, but the greatest number of individuals (180) has been found in Orkney. The bat invasion on the Faroe Islands in 2010 is without precedence, when 70 observations of a minimum of 45 individuals were noted. Most bat observations in the study area occurred in the autumn, with fewer in the spring. Most observations were of single animals, but there were also sightings of up to 12 individuals. There has been a marked increase in bat records in the past three decades. We discuss whether this is a real increase, or due to improved communications, increased public awareness, increased shipping, changes in weather patterns and/or the effects of climate change. All factors appear to be involved. © Museum and Institute of Zoology PAS.

Jones E.P.,University of York | Jones E.P.,Uppsala University | Jensen J.-K.,I Geilini 37 | Magnussen E.,Sudan University of Science and Technology | And 4 more authors.
Biological Journal of the Linnean Society | Year: 2011

Faroe house mice are a 'classic' system of rapid and dramatic morphological divergence highlighted by J. S. Huxley during the development of the Modern Synthesis. In the present study, we characterize these charismatic mice using modern molecular techniques, examining specimens from all Faroe islands occupied by mice. The aims were to classify the mice within the modern house mouse taxonomy (i.e. as either Mus musculus domesticus or Mus musculus musculus) using four molecular markers and a morphological feature, and to examine the genetic diversity and possible routes of colonization using mitochondrial (mt) control region DNA sequences and microsatellite data (15 loci). Mice on the most remote islands were characterized as M. m. domesticus and exhibited exceptionally low genetic diversity, whereas those on better connected islands were more genetically diverse and had both M. m. musculus and M. m. domesticus genetic elements, including one population which was morphologically M. m. musculus-like. The mtDNA data indicate that the majority of the mice had their origins in south-western Norway (or possibly southern Denmark/northern Germany), and probably arrived with the Vikings, earlier than suggested by Huxley. The M. m. musculus genetic component appears to derive from recent mouse immigration from Denmark. © 2011 The Linnean Society of London.

Jakubas D.,University of Gdansk | Wojczulanis-Jakubas K.,University of Gdansk | Jensen J.-K.,I Geilini 37
Acta Ornithologica | Year: 2014

Body size differentiation may have developed in response to environmental gradients. A pattern of large individuals prevailing in colder areas is often observed and is explained by the heat conservation hypothesis (Bergmann's rule). To understand patterns driving body size variation in a pelagic seabird, the European Storm Petrel Hydrobates pelagicus, we examined the relationship between wing length, body mass and environmental variables in breeding areas (sea surface temperature, air temperature and wind speed). As this species has been divided into two subspecies: Mediterranean H. p. melitensis and Atlantic H. p. pelagicus, we performed the analyses at different scales (species, Atlantic subspecies and regional North Atlantic). At the species and subspecies scales, there was a longitudinal increase in wing length from west to east. At the subspecies and regional scale, we found a latitudinal increase in this variable from south to north. This result and the significant increase of wing length with decreasing sea surface and air temperatures are concordant with Bergmann's rule. In addition, body mass at the species and subspecies scales decreased with increasing wind speed, what may have a functional implication (small body mass may increase manoeuvrability over waves in conditions of stronger wind). Both genetic (two subspecies differing in body size) and environmental factors seem to be important forces driving intercolony variation in body size. Our study on sexual size dimorphism (SSD) revealed that in 156 molecularly sexed adults from the Faeroes, wing and tail length, and body mass exhibited female-biased SSD, while head-bill length showed male-biased SSD. The best discriminant function for sexing based on body measurements correctly classified 75% of individuals. Considering low correctness of proposed functions and geographical variation of body size, use of alternative methods (e.g. molecular tools) is recommended for sex discrimination in the European Storm Petrel.

Harris M.P.,UK Center for Ecology and Hydrology | Leopold M.F.,Wageningen IMARES | Jensen J..-K.,I Geilini 37 | Meesters E.H.,Wageningen IMARES | Wanless S.,UK Center for Ecology and Hydrology
Ibis | Year: 2015

Most mortality of Atlantic Puffins occurs outside the breeding season but little is known about the species' diet at that timeThe stomach contents of 176 Puffins shot legally for food around the Faroe Islands between October and January in three winters were examinedThe remains of 20 species of fish, six species of crustacea and single species of polychaete, chaetognathid and squid were identifiedThe most frequently recorded prey in terms of frequency of occurrence were 0 group (< 1 year old) Lesser Sandeel Ammodytes marinus (82% of stomachs), followed by mesopelagic fish (52%), nereid worms (41%), Silver Rockling Gaidropsarus argentatus (36%), crustacea (35%), large sandeel (32%) and other large fish (32%)In terms of calculated biomass, nereids (41%), large sandeel (23%) and other large fish (17%) made up the bulk of the diet but the latter two prey types were most important in energetic terms (46% despite accounting for only 9% of items)Stomach contents collected on the same day and location were significantly more similar than those collected on different dates and locations, suggesting that during the winter, Puffins are generalists, taking any prey they encounter. © 2015 British Ornithologists' Union.

Harris M.P.,UK Center for Ecology and Hydrology | Wanless S.,UK Center for Ecology and Hydrology | Jensen J.-K.,I Geilini 37
Bird Study | Year: 2014

Capsule Atlantic Puffins in the North Sea can replace their primaries, and hence be flightless, any time between September and March but there are peaks in wing moult in October and March and a smaller proportion of birds moult between November and February.Aims To determine when Atlantic Puffins wintering in the North Sea and around the Faroe Islands replace their primaries and are flightless.Methods We examined 1431 Atlantic Puffins washed ashore on the coasts of the North Sea and 165 shot in the Faroe Islands. Birds were aged using bill characteristics and the state of wing moult and age of the primaries recorded.Results Flightless adult Puffins were recorded in all months between September and March but the proportions of moulting birds were higher in October and March and lower in January and February. Most juveniles did not become flightless during their first winter and probably do not moult their primaries until about one-year old. On average, adults completed their moult slightly earlier than immatures, consistent with a typically earlier return to the breeding colony at the start of the breeding season.Conclusion Despite the Atlantic Puffin being one of the most abundant birds in the North Sea we still know little about its moult. The available data indicate that the species exhibits a highly unusual pattern with the timing of the flightless period showing much greater variation than normal. The causes and consequences of this flexibility are currently unknown but results from ringed birds indicate that timing of moult can vary markedly within a breeding population. © 2014 British Trust for Ornithology.

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