Habitat selection of gray seals halichoerus grypus in a. Rates of increase in gray seal halichoerus grypus atlantica. Of those selected for histologic examination, 14 seals were given complete autopsies, whereas in the 15th seal, only. A survey of the diseases detectable in 141 grey seals stranded on the coasts of england and wales away from breeding colonies was carried out between mid1989 and early 1997. Halichoerus definition of halichoerus by merriamwebster. Media in category halichoerus grypusthe following 200 files are in this category, out of 266 total. Novel pulmonary vasculitis with splendorehoeppli reaction. Although considered generalists, less is known about gray seal foraging ecology in the united states. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. The breeding and distribution of the grey seal halichoerus. We investigated habitat selection by grey seals, halichoerus grypus, around haulouts in the baltic sea.
With the first two transmitters a and b the entire package was. Anaesthesia of three young grey seals halichoerus grypus. The harbor seal phoca vitulina is the most common representative of the pinnipeds in the wadden sea of the german north sea 8, 12. Dec, 2019 minimum counts of gray seal halichoerus grypus atlantica pups observed from 1988 to 2019 at united states sites. Three types of argos satellite transmitter were attached to grey seals halichoerus grypus at donna nook south humberside, uk between 1985 and 1989 in order to investigate their movements. Pdf dispersal and bycatch mortality in gray, halichoerus. The grey seal, halichoerus gypus, and the common seal, phoca vitulina, are the only resident seals on the coast of the norwegian mainland. Of these, 34 seals had grossly detected uterine leiomyomas, and 15 of these seals were sufficiently well preserved for histologic examination. The text of this page is licensed under the creative commons attributionnoncommercial license version 3. A subadult grey seal was caught and tagged with a satellite relay data logger at tihallan 6128.
Heavy metal content in liver and kidneys of grey seals. Since 1985, carcasses of grey seals halichoerus grypus and. Identification and molecular characterization of beta. The effects of seismic activity on marine mammals in uk waters, 19982000. Grey seal halichoerus grypus distribution during 198384 in the gulf of st. An halichoerus grypus in nahilalakip ha genus nga halichoerus, ngan familia nga phocidae. Rapid increase of the grey seal halichoerus grypus. Causes of mortality and nonfatal conditions among grey.
An halichoerus grypus in uska species han mammalia nga syahan ginhulagway ni fabricius hadton 1791. Acoustic structure and individual variation of grey seal halichoerus grypus pup calls article pdf available in journal of the marine biological association of the uk 7802. Both mammals are present in the wadden sea for the whole year. Jul 10, 2002 behavioral effects of environmental enrichment on harbor seals phoca vitulina concolor and gray seals halichoerus grypus. The area of greatest abundance is centred around the coasts of the british isles where the species has been established for a considerable period. Download this free picture about grey seal robbe halichoerus grypus from pixabays vast library of public domain images and videos. A majority of them 542 were tagged at the ainov archipelago.
We tracked it for 115 days during which time we recorded 841 locations, data on 3556 dives and 80 haulout periods. During 1988 and 1989 i observed two breeding colonies of the landbreeding grey seal, halichoerus grypus, at north rona, scotland 59 08 n. The presenting signs were classified into nine nonmutually exclusive categories. Ginklasipika han iucn an species komo diri gud kababarakan subspecies. Although standard measuring methods for mammal skeletons exist e. Histology of uterine leiomyoma and occurrence in relation to reproductive activity in the baltic gray seal halichoerus grypus.
Ini nga species ginbahin ha masunod nga subspecies. The grey seal, halichoerus grypus, in northwest ireland. Underwater noise pollution from munitions clearance and disposal, possible effects on marine vertebrates and its mitigation. Pdf conditions in grey seal pups halichoerus grypus. Grey and brown fur, sometimes with a pattern of blotches. A total of 612 grey seal halichoerus grypus pups were tagged on the murman coast, russia, in the years 1991, 1992 and 1994. Histopathologic, ultrastructural, and negativestaining studies indicated that nodular lesions on the flippers, head, and necks of recently weaned, captive grey seals halichoerus grypus were similar to sealpox lesions reported from several other species of seals. The grey seal halichoerus grypus is found on both shores of the north atlantic ocean. A study on the effect of different rifle calibres in.
Download fulltext pdf download fulltext pdf download fulltext pdf anaesthesia of three young grey seals halichoerus grypus for fracture repair article pdf available march 2011 with 112 reads. Pdf acoustic structure and individual variation of grey. Behavioral effects of environmental enrichment on harbor. Detailed, comparative studies of pinnipeds are rare, particularly between breeding and nonbreeding groups of phocids. The primary aim of this study was to assess the presence of brucella pinnipedialis in marine mammals living along the dutch coast and to observe a possible correlation between the presence of b. Grey seal, halichoerus grypus, habitat selection around. Habitat selection of gray seals halichoerus grypus in a marine protected area in france mathilde huon. With the first two transmitters a and b the entire package was attached to the seals back. Microsatellites were used to conduct an extensive analysis of paternity of grey seals from two scottish breeding colonies at north rona n 1189 and the isle of may n 694, spanning more than a decade. Virions associated with the nodules were characteristic of the parapoxvirus subgroup of pox viruses. Halichoerus definition is the genus comprising the gray seal. Satellite tracking of grey seals halichoerus grypus. Joint nature conservation committee, peterborough, uk.
Polychlorinated biphenyls and organochlorine pesticides in. Halichoerus grypus with the common name grey seal, belongs to the mammals group grey seal halichoerus grypus fabricius, 1791 toggle navigation. The presenting signs were classified into nine nonmutually. Seasonal variability and individual consistency in gray. Organochlorine pollutants ocs, such as polychlorinated biphenyls pcbs, ddt, chlordanes chls, hexachlorobenzene hcb and hexachlorocyclohexanes hchs were determined in blubber biopsies from free. Observations on the grey seal halichoerus grypus at ramsey island, pembrokeshire. The arrival of both sexes at the breeding grounds is discussed and also their behaviour prior to the birth of the. It travelled 730 km in the first 12 days to the southern archipelago sea. A retrospective survey was performed on the presenting conditions of 205 live grey seal pups halichoerus grypus admitted to the cornish seal sanctuary in gweek, united kingdom between may 2005 and march 2011.
Grey seal halichoerus grypus and atlantic salmon salmo salar in the northern baltic sea public deposited analytics. Halichoerus grypus grypus in mammal species of the world. In general, the way in which a population expands its range depends on three factors. Pdf grey seal halichoerus grypus distribution during. We present a series of cases of lungworm infection in grey seals halichoerus grypus associated with novel, significant and unusual pulmonary vascular changes. Fiftythree baltic gray seal females of age 1540 years were found dead and were autopsied between 1975 and 1997.
Here, we describe a grey seal skull held in the collections of the natural history museum of denmark, and. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Mammal species of the world a taxonomic and geographic reference. This study therefore investigated the effect of different firearm calibres on euthanasia of grey seals halichoerus grypus in traps, and provides information for the. Home ranges 95% fixed kernel varied in size from 1088 to 6400 km2. The survey was carried out to assess the incidence of malnutrition, hyperthermia, respiratory and gastrointestinal conditions, and also the incidence of traumatic, skin, oral and ocular lesions.
Gray seals halichoerus grypus fabricius, 1791 were considered locally extinct in united states waters by 1958 but have since recolonized the region. Histology of uterine leiomyoma and occurrence in relation. Both of the species have been defined as critically endangered in the late 20th century but due to conservation schemes, harvest controls and enhanced environmental quality the situation of both species has ameliorated. Conference proceedings or journal optimal management of. A manual to the skeletal measurements of the seal genera. In recent years, the euthanasia of seals has been discussed internationally and concern has been raised regarding the use of rifles, the effect of different calibres, and which calibres are sufficient for humane euthanasia.
The grey seals seem to prefer the outlying skerries for their breeding while the common seals select more sheltered areas. Observed habitat use was tested against the circular home range predicted from a simple centralplace model. Based on published data, this note compares recent trends in pup production at nine breeding sites, with focus on the german island of helgoland. It is the only species classified in the genus halichoerus.
Currently, little is known about the atsea distribution of grey seals halichoerus grypus which haul out on the uk coast of the southern north sea, particularly following the large increases in breeding and foraging populations in the area over the last decade. Prevalence of presenting conditions in grey seal pups. Halichoerus grypus an overview sciencedirect topics. Young grey seal halichoerus grypus ocean isla by kellehewitt. The purpose of the survey was to examine the prevalence of various presenting signs at the sanctuary. The grey seal halichoerus grypus is also resident in the wadden sea, but in much lower numbers than the harbor seal. Conditions in grey seal pups halichoerus grypus presented. Observations on the grey seal halichoerus grypus at ramsey. The survey was carried out to assess the incidence of malnutrition, hyperthermia, respiratory and gastrointestinal conditions, and also the incidence of traumatic, skin, oral and.
A maximum of 46% of pups at north rona and 29% of pups at the isle of may could be allocated a father, even though the majority of candidate males for specific study sites. Grey seals halichoerus grypus and harbour seals phoca vitulina are sympatric predators throughout much of their distribution in the northern atlantic. The most common fatal conditions in pups less than three weeks of age were trauma 24 per cent of deaths and dystocia 12 per cent. An extensive microsatellite analysis of paternity in the grey seal halichoerus grypus j. Behavioral effects of environmental enrichment on harbor seals phoca vitulina concolor and gray seals halichoerus grypus sue a. It is a large seal of the family phocidae which are commonly referred to as true seals or earless seals. Seasonal variability and individual consistency in gray seal. Grey seals n 180 that were stranded, in rehabilitation or in longterm captivity in the uk were subjected to postmortem examination between 2012 and 2018. Ynes 1964 recorded 660 pups of grey seals in 1963 from merre to. This study therefore investigated the effect of different firearm calibres on euthanasia of grey seals halichoerus grypus in traps, and. Brucellosis is a zoonotic disease with terrestrial or marine wildlife animals as potential reservoirs for the disease in livestock and human populations. A brdding colony of the grey seal was studied in the autumn of 1947 at ramsey island. Nov, 20 in recent years, the euthanasia of seals has been discussed internationally and concern has been raised regarding the use of rifles, the effect of different calibres, and which calibres are sufficient for humane euthanasia. Since 1997, numbers born at helgoland increased at.
However, the nomenclature of the grey seal halichoerus grypus fabricius 1791 has for many years been misled by two persistent assumptions. Young grey seal halichoerus grypus, ocean island, helgoland, schleswigholstein, germany, europe. Movements and diurnal behaviour patterns in a baltic grey. A survey was carried out on the condition of 188 live grey seal halichoerus grypus pups presented for rehabilitation from the coasts of southwest england between 1992 and 1998. Currently, little is known about the atsea distribution of grey seals halichoerus grypus which haul out on the uk coast of the southern north sea, particularly following the large increases in breeding and foraging populations in the area over the. Liver and kidneys from grey seals halichoerus grypus in their natural habitats in norwegian waters contain high levels of cd and hg as well as metallothionein mt. Over the past 25 years, the grey seal halichoerus grypus population in the north sea increased on average at 5% per year, while founding a number of new colonies. Grey seal halichoerus grypus quick facts recognition.
Home ranges 95% fixed kernel varied in size from 1088 to 6400 km 2. Pdf status of grey seals halichoerus grypus in norway. Grey seal robbe halichoerus grypus free photo on pixabay. Conference proceedings or journal optimal management of conflicting species. This is the case in the baltic sea with grey seal halichoerus grypus and atlantic salmon salmo salar. Halichoerus grypus grypus wikispecies, free species. Streptococcus halichoeri is an emerging pathogen with a variety of host species and zoonotic potential. Causes of mortality and nonfatal conditions among grey seals. The ability for a depleted population to naturally recolonize historical habitat varies. Dimensions of diet segregation in grey seals halichoerus grypus revealed through stable isotopes of carbon. Sep 09, 2000 we investigated habitat selection by grey seals, halichoerus grypus, around haulouts in the baltic sea. Histology of uterine leiomyoma and occurrence in relation to. Novel pulmonary vasculitis with splendorehoeppli reaction in grey seals halichoerus grypus associated with otostrongylus circumlitus infection.
77 1295 1375 73 1321 1573 1361 1616 1449 1602 67 487 784 207 577 1404 1485 1040 1131 168 864 223 1627 889 1464 1351 622 1243 384 692 711 1194 1066 802 784 1445 96 1360 1133 635 538 1445