Harbour seals
The impact of glide phases on the trackability of hydrodynamic trails in harbour seals (Phoca vitulina)
... male harbour seal (Phoca vitulina ...male harbour seals in a concrete outdoor pool, filled with fresh ...seven seals of the group were separated in an enclosure in a corner of the holding ...
7
Detection and direction discrimination of single vortex rings by harbour seals (Phoca vitulina)
... Blindfolded harbour seals (Dehnhardt et ...objects. Harbour seals also can discriminate hydrodynamic trails generated by differently sized objects as well as by objects differing in shape ...
12
Exposure of harbour seals (Phoca vitulina) to Brucella in declining populations across Scotland
... Following the completion of the Rose Bengal trials with the successful detection of antibodies, the varia- tion in seroprevalence, i.e. the proportion of animals with antibody levels higher than a background threshold ...
11
Hydrodynamic detection and localization of artificial flatfish breathing currents by harbour seals (Phoca vitulina)
... The three harbour seals were trained to start from the hoop station, dive over the platform and station at the active nozzle, i.e. to put their snout at the mesh grid at the position of the nozzle for at ...
12
Investigating monitoring options for harbour seals in Special Areas of Conservation in Scotland
... from harbour seals in the UK ...individual seals used in the ...individual harbour seals should be tagged to overcome the effects of variation observed in the present ...
244
Avoidance of wind farms by harbour seals is limited to pile driving activities
... of seals in relation to wind farm construction and ...that harbour seals were displaced from an operational wind farm; there was a near significant increase in usage of the area encompassing ...
11
The metabolic characteristics of the locomotory muscles of grey seals (Halichoerus grypus), harbour seals (Phoca vitulina) and Antarctic fur seals (Arctocephalus gazella)
... Harbour seals exhibit diving/foraging patterns similar to those of the grey seal, with long periods of diving and foraging, and this corresponds with their similar fibre type sizes and proportions (see ...
14
Sensitivity of the mystacial vibrissae of harbour seals (Phoca vitulina) for size differences of actively touched objects
... As in species belonging to the other two pinnipeds families, Odobenidae (Pacific walrus; Kastelein and van Gaalen, 1988) and Otariidae (California sea lion; Dehnhardt, 1990, 1994), harbour seals (Phocidae) ...
7
Parasites in harbour seals (Phoca vitulina) from the German Wadden Sea between two Phocine Distemper Virus epidemics
... 107 harbour seals (Phoca vitulina) found on the coasts of Schleswig-Holstein, Germany, between 1997 and ...in seals that died during the 1988/1989 Phocine Distemper Virus epidemic, and the prevalence ...
7
Evaluating the influence of epidemiological parameters and host ecology on the spread of phocine distemper virus through populations of harbour seals
... [8] suggested that the lower levels of mortality observed in some regions in 2002 may have been partly due to the presence of immune survivors from the 1988 epidemic. However, the prevalence of immunity in 2002 was ...
8
Hydrodynamic sensory threshold in harbour seals (Phoca vitulina) for artificial flatfish breathing currents
... The seals ’ sensory thresholds found in the present study were ...that harbour seals hunting for flatfish in the wild at some distance over the sea bottom rely on breathing currents of larger ...
8
Aerial low frequency hearing in captive and free ranging harbour seals (Phoca vitulina) using auditory brainstem responses
... media, harbour seals show a strong dependence on the production and perception of sounds both in air and underwater (Wartzok and Ketten 1999), especially in courtship behaviour and breeding interactions ...
10
Ambient temperature does not affect the tactile sensitivity of mystacial vibrissae in harbour seals
... adult harbour seals (Phoca vitulina, ...both seals were experienced in making tactile discriminations by means of their mystacial vibrissae (Dehnhardt and Kaminski, ...the seals were ...
7
Intrinsic and extrinsic drivers of activity budgets in sympatric grey and harbour seals
... regional variation in both the proportion of time spent resting overall harbour seals and also.. the how this was allocated to land and sea both species.[r] ...
36
Dynamic habitat corridors for marine predators : intensive use of a coastal channel by harbour seals is modulated by tidal currents
... that seals may be attracted to such areas due to enhanced foraging opportunities or efficiency (Brown and Mate 1983; Thompson et ...reported harbour seals foraging on salmon during the incoming tide ...
14
Seals, sandeels and salmon : diet of harbour seals in St Andrews Bay and the Tay Estuary, southeast Scotland
... ABSTRACT: Harbour seal populations have declined by up to 40% around northern and eastern Britain since 2000 due to unknown causes; prey availability is one important factor that could be con- tributing to the ...
12
The diet and feeding ecology of harbour seals around Britain
... female harbour seals in Chapter ...female seals overall and at a seasonal level where ...female harbour seals require different levels of energy expenditure at different times of the ...
407
Mercury immune toxicity in harbour seals: links to in vitro toxicity
... free-ranging harbour seals from the North Sea and (2) to examine the link between in vitro Hg exposure at low doses and immune functions using seal and human mitogen-stimulated peripheral blood mono- ...
17
Tracking of biogenic hydrodynamic trails in harbour seals (Phoca vitulina)
... of harbour seals were demonstrated to respond to vibrations mediated by a rod contacting the hair in earlier studies (Dykes, 1975; Mills and Renouf, 1986; Renouf, 1979), but their function as a hydrodynamic ...
7
Summary of National Parks & Wildlife Service surveys for common (harbour) seals (Phoca vitulina) and grey seals (Halichoerus grypus), 1978 to 2003
... for seals in the late 1970s as a response to a proposal for a widespread seal ...of seals competing with fishermen for fish ...of seals killed by this virus internationally led to fears for the ...
68