sperm whale
Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye
... Results: The three scanners did not provide sufficient information to allow age estimation, but both MRI and CT provided anatomical information about the tooth cortex and medulla without the need for sectioning the ...
8
Sperm whale diet variation by sex, location, year, social group and clan : Evidence from stable isotopes
... of sperm whales Physeter macrocephalus by measuring carbon and nitrogen isotope ratios in 106 sloughed skin samples and 10 squid beaks (Histioteuthidae ...from sperm whale ...of sperm whales ...
6
Biological significance of sperm whale responses to sonar: comparison with anti predator responses
... how sperm whale behavioral re - sponses to naval sonar compare to the disturbance effect induced by the detection of a predator ...killer whale), we focused on 3 primary behavioral aspects: ...
14
Sperm whale predator prey interactions involve chasing and buzzing, but no acoustic stunning
... for sperm whales using high resolution on-animal meas- urements to uncover the movement and echolocation behaviour before and during prey ...capture. Sperm whales produce the most powerful biological sounds ...
13
First records of dwarf sperm whale (Kogia sima) from the Union of the Comoros
... pygmy sperm whale ...dwarf sperm whales have been made from the waters north of the Seychelles to Oman and Sri Lanka, (Balance & Pitman 1998), Thailand, Indonesia and Western Australia (Willis ...
5
Pygmy Sperm Whale (Kogin breiJiceps) stranding record in Tasmania, Australia, and diet of a single specimen
... Pygmy Sperm Whale, Kogia breviceps, in Tasmanian waters, and the diet of a single indi- ...Pygmy Sperm Whale is one of the most commonly stranded cetaceans in some parts of Australia, although ...
8
Variation in sperm whale (Physeter macrocephalus) coda vocalizations and social structure in the North Atlantic Ocean
... between sperm whale clans in the Pacific may be used to signal social units' foraging specialisation, which would mediate the formation of multi-unit grouping among units with similar foraging ...and ...
136
Sperm whale sound production studied with ultrasound time/depth recording tags
... of sperm whale usual clicks, far-field recordings cannot quantify changes in the acoustic output of the sound generator since scanning movements of a directional source rather than output modulations may be ...
8
Structure, material characteristics and function of the upper respiratory tract of the pygmy sperm whale
... the sperm whale, which can dive to depths exceeding 2000 m, suggested that the short, wide trachea of the sperm whale is rigid (Berzin, ...the sperm whale are (a) complete, (b) ...
8
Structure and proportions of the spermaceti organ in the sperm whale
... 1-9 As a basis for understanding the function of the spermaceti organ of the sperm whale, macrocephalus L., details of the structure and proportions of the head, skin, blubber and lungs [r] ...
19
Lipid class and depth specific thermal properties in the blubber of the short finned pilot whale and the pygmy sperm whale
... Factors other than lipid content, lipid class and fatty acid composition may also influence the overall thermal conductivity value of blubber. Future studies might consider whether structural features of blubber not ...
10
Koristocetus pescei gen. et sp. nov., a diminutive sperm whale (Cetacea: Odontoceti: Kogiidae) from the late Miocene of Peru
... Abstract. Among odontocetes, members of the family Kogi- idae (pygmy and dwarf sperm whales) are known as small- sized and in many respects enigmatic relatives of the great sperm whale Physeter ...
20
Sperm whale response to tag boat presence : biologically informed hidden state models quantify lost feeding opportunities
... male sperm whales in a sub- arctic foraging ground in Northern Norway as a relatively simple model system where individu- als spend most of their time solitary and feeding (Teloni et ...2013). Sperm whales ...
46
Sperm whale codas may encode individuality as well as clan identity
... male sperm whales (Frantzis and Alexiadou, ...comparing sperm whale coda repertoires recorded in different contexts may highlight variation due to context instead of an actual difference of ...
10
Sperm whale echolocation behaviour reveals a directed, prior based search strategy informed by prey distribution
... Male sperm whales in high latitude waters feed over a wide depth range, and may switch between prey layers several times per day (Figure ...Male sperm whales off northern Norway present a unique combination ...
34
Middle/late Miocene hoplocetine sperm whale remains (Odontoceti: Physeteridae) of North Germany with an emended classification of the Hoplocetinae
... luscs, benthic foraminiferes and ostracods seem to be useful for palaeoecological interpretations and for regional biostratigraphy, planktonic or- ganisms are better for large-scale biostratigraphic correlation. Spiegler ...
26
Physical properties of spermaceti oil in the sperm whale
... In the paper dealing with the buoyancy control function of the spermaceti organ Clarke, 1978b it is shown that the whale only needs to drop the temperature of the spermaceti oil about 3 [r] ...
8
Buoyancy control as a function of the spermaceti organ in the sperm whale
... Control of buoyancy The change in temperature of spermaceti oil necessary to achieve neutral buoyancy The loss of heat from the spermaceti oil necessary to achieve neutral buoyancy The m[r] ...
45
Methods for estimating sperm whale abundance from passive acoustic line transect surveys
... We take the linking of clicks from a survey (or transect) into click segments “known” to come from the same whale, as given. It may be that more than one segment comes from the same whale, but this we do ...
16
Sperm whales reduce foraging effort during exposure to 1 2 kH z sonar and killer whale sounds
... in sperm whales could lead to a signifi cant reduction in prey intake if the behavioral changes persisted over longer or repeated exposures to either LFAS or preda- tor ...killer whale groups exposed to ...
17