[PDF] Top 20 Sensitivity of the mystacial vibrissae of harbour seals (Phoca vitulina) for size differences of actively touched objects

... In principle, the same test apparatus was used as described in detail by Dehnhardt (1994), although the height of the stimulus presentation areas (Fig. 4) was reduced so that the discs could be presented 35 cm above the ... See full document

... Harbour seals can use their mystacial vibrissae to detect and track hydrodynamic ...a harbour seal to discriminate objects of different size or shape by their hydrodynamic ... See full document

... Blindfolded harbour seals (Dehnhardt et ...their mystacial vibrissae, and thus locate distant ...objects. Harbour seals also can discriminate hydrodynamic trails generated ... See full document

... fasting seals than feeding ...harbor seals ALT is also found in skeletal muscle and kidneys such that its presence in blood is not liver specific (Fauquier et ...harbor seals, ALT was increased in ... See full document

... For the first time, qPCR was successfully used to diag- nose D. immitis infection in pinnipeds. Indeed, qPCR detected seven infected animals, of which two P. vitulina and one A. p. pusillus which were also ... See full document

... The sensitivity thresholds reported here are most similar to those previously measured in an underwater psychophysical paradigm (Dehnhardt et ...best sensitivity are ...velocity sensitivity (80 Hz) ... See full document

... why seals could perform fast rotational movements of the head and body (Boeddeker and Egelhaaf, 2005; Haselsteiner et ...that seals adopt a saccadic movement strategy to optimize the output from optic flow ... See full document

... in seals in this study was highly age related, seals from age classes 0 and 1 were especially a V ected by heavy burdens of nematodes in the respiratory ...the harbour porpoise (Phocoena phoco- ena) ... See full document

... by harbour seals (Phoca vitulina, Lin- naeus), and the overlap between their at-sea distribution and sound producing activities has led to concerns about the potential impacts of sound on this ... See full document

... 250 seals died as a result of PDV infection in Northern Ireland (Northridge et ...grey seals was much more difficult to quantify because of widespread migration and the seasonal use of haul-out ...of ... See full document

... The mass die-off in 1988 is discussed within the framework of the knowledge on the population, and it is recommended that more effort be put into monitoring and population studi[r] ... See full document

... Even the wake behind a small swimming goldfish (Carassius auratus) of 10cm body length can contain water velocities significantly higher than background noise several minutes after its passage; thus, representing ... See full document

... 1997). Seals accomplish the majority of their ecological tasks underwater; therefore, a suitable diving strategy should minimize time at the surface and maximize the proportion of time spent ...Although ... See full document

... for seals, serum samples of lungworm-positive and lungworm-negative seals were ...free-living harbour and grey seals originating from the German North and Baltic ...Subsequently, seals ... See full document

... The species S. phocae was first mentioned by Skaar et al. (15). These authors isolated S. phocae from different organs of harbor seals. In addition, this species was detected in infections of fur seals (9). ... See full document

... The carcasses of mink, seals and otters were subjected to standard necropsy procedures. Except for three mink (Nos. 1, 5 and 6), specimens of lung, liver, spleen, duo- denum, ileum and kidney were sampled for ... See full document

... a harbour seal (Phoca vitulina) was trained to wear an OpenTag (sampling at 200 or 333 Hz with ±2 or ±16 g clipping) on its head while catching fish prey in front of four underwater digital ... See full document

... harbor seals are forcibly submerged or exercising is not oxidized but recycled, most likely back into glucose in the ...that seals rely primarily on aerobic metabolism during ...the seals to produce ... See full document

... The difference in Weddell seal skeletal muscle physiology observed during this study may arise from the three very distinct stages of their life history. During the first few weeks of life, Weddell seal pups are a ... See full document

... for harbour seals in certain ...lactating harbour seals and their pups equipped with time-depth- recorders at Sable Island, Nova Scotia, spent about 40% of their time together at sea and ... See full document