Results 31 to 40 of about 848,748 (280)

Characteristics of the grey seal (Halichoerus grypus) diet in the Vistula River mouth (Mewia Łacha Nature Reserve, southern Baltic Sea), based on the osteological and molecular studies of scat samples

open access: yesOceanologia, 2020
Summary: The study analyses for the first time the diet composition of grey seals inhabiting the Polish Baltic Sea coast. Samples of seal scat were collected in the Mewia Łacha Nature Reserve at the mouth of the Vistula River.
Sławomir Keszka   +5 more
doaj   +1 more source

Screening for Influenza and Morbillivirus in Seals and Porpoises in the Baltic and North Sea

open access: yesPathogens, 2023
Historically, the seals and harbour porpoises of the Baltic Sea and North Sea have been subjected to hunting, chemical pollutants and repeated mass mortalities, leading to significant population fluctuations. Despite the conservation implications and the
Iben Stokholm   +10 more
doaj   +1 more source

Assessing grey seal (Halichoerus grypus) diet in western Scotland [PDF]

open access: yes, 2008
Grey seal diet was last comprehensively studied in western Scotland in 1985. Since then, the grey seal population has increased by approximately 30% and relative abundance of fish stocks in the area has changed markedly.
Harris, R.N.
core   +2 more sources

Toxoplasma gondii, Sarcocystis sp. and Neospora caninum-like parasites in seals from northern and eastern Canada: potential risk to consumers

open access: yesFood and Waterborne Parasitology, 2019
Zoonotic parasites of seals that are harvested for food may pose a health risk when seal meat or organ tissues of infected animals are eaten raw or undercooked. In this study, 124 tissue samples from 81 seals, comprising four species, were collected from
Sarah J. Reiling   +5 more
doaj   +1 more source

Application of tonal audiometry methods to assess the hearing of grey seals in air and water environments

open access: yesVestnik MGTU, 2023
Anthropogenic noise load on the traditional habitats of marine mammals continues to increase due to the active development of the Arctic zone. The study of the hearing of Arctic seals is of great importance for the development of measures to reduce the ...
Pakhomov M. V.   +3 more
doaj   +1 more source

Present knowledge of grey seals (Halichoerus grypus) in Faroese waters

open access: yesNAMMCO Scientific Publications, 2007
The grey seal (Halichoerus grypus) is the only pinniped species breeding in the Faroe Islands. They are present all year round, and can be observed throughout the archipelago, but prefer to reside in exposed coastal areas, away from human settlements ...
Bjarni Mikkelsen
doaj   +1 more source

A recombinant antigen-based enzyme-linked immunosorbent assay (ELISA) for lungworm detection in seals

open access: yesParasites & Vectors, 2015
Background Pinnipeds are frequently infected by the lungworms Otostrongylus circumlitus and Parafilaroides gymnurus (Metastrongyloidea). Infections are frequently associated with secondary bacterial bronchopneumonia and are often lethal.
Sophia Arlena Ulrich   +3 more
doaj   +1 more source

Prevalence and molecular characterisation of Acanthocephala in pinnipedia of the North and Baltic Seas

open access: yesInternational Journal for Parasitology: Parasites and Wildlife, 2018
Harbour seals (Phoca vitulina) and grey seals (Halichoerus grypus) are final hosts of acanthocephalans in the German North and Baltic Seas. Parasitic infections in seals can cause pathological changes, which may result in deteriorated health of the host.
Patrick Waindok   +4 more
doaj   +1 more source

The karyotype of the grey seal (Halichoerus grypus) [PDF]

open access: yesHereditas, 2009
The somatic chromosomes of the grey seal, Halichoerus grypus Fabr., and their autoradiographic pattern were studied in cultures of lung tissue. An idiogram was made based on measurements of 6 male and 14 female cells. The chromosome number of the grey seal is 2n = 32.
openaire   +2 more sources

On the dynamics and selective transport of fatty acids and organochlorines in lactating grey seals (Halichoerus grypus) [PDF]

open access: yes, 2010
This thesis examines fatty acid (FA) and polychlorinated biphenyl (PCB) dynamics in a marine top predator, the grey seal (Halichoerus grypus,) and their transfer during lactation from mother to offspring.
Arriola Ortiz, Aline
core   +2 more sources

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