Sperm whales
Diverse foraging strategies by a marine top predator : sperm whales exploit pelagic and demersal habitats in the Kaikōura submarine canyon
... of sperm whales has been investigated using a variety of methods including implanted transponders (Watkins et ...of sperm whales at Kaikōura was first studied in 2007 using a three-dimensional ...
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Acoustic analysis of slow click function and foraging in sperm whales (Physeter macrocephalus) off Kaikoura, New Zealand
... slow-clicking whales are swimming towards the surface (Jaquet et ...click, sperm whales could extend the total area/volume involved in the click reverberation, from the distal air sac through to the ...
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Quantifying the energy stores of capital breeding humpback whales and income breeding sperm whales using historical whaling records
... humpback whales (Megaptera novaeangliae) (n = 905) and sperm whales (Physeter macrocephalus) (n = ...and sperm whales, consistent with size-related energy ...humpback whales ...
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Changes in dive behaviour during naval sonar exposure in killer whales, long finned pilot whales, and sperm whales
... killer whales also during MFAS exposure, which imply disruption of feeding ...killer whales which feed on distinct food patches such as herring schools (Simila et ...and sperm whales (Watwood ...
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Movement and biosonar behavior during prey encounters indicate that male sperm whales switch foraging strategy with depth
... beaked whales, delphinids, and many bats that switch to terminal echolocation ∼ 1 body length away from their target (Madsen and Surlykke, ...Alternatively, sperm whales emit buzz clicks more slowly ...
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The life history of sperm whales, Physeter macrocephalus, from southern Australian waters
... CHAPTER TWO: AN INTRODUCTION TO THREE MASS STRANDINGS OF SPERM WHALES, PHYSETER MACROCEPHALUS, IN SOUTHERN AUSTRALIAN WATERS 2.1.. MATERIALS AND METHODS 2.2.1.[r] ...
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Fisheries interaction data suggest variations in the distribution of sperm whales on the Kerguelen Plateau
... experiencing sperm whale depredation (Tixier et ...of sperm whale depredation than the vessels operating in ...by sperm whales to locate them, or the decisions made by skippers when confronted ...
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Swimming gaits, passive drag and buoyancy of diving sperm whales Physeter macrocephalus
... which whales slow down during descent ...of sperm whales is well vascularized, heat transfer from the blood to the blubber is possible (Berzin, ...
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Cultural turnover among Galápagos sperm whales
... Female sperm whales live in multilevel societies [10]. The fundamental social level is the nearly permanent social units of about 11 females and their young [10–12]. The largest level is the vocal clan, ...
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The function of roll in foraging behaviour of sperm whales
... Some cephalopod species, including some found in stomach contents of stranded or commercially caught sperm whales, exhibit clear diurnal vertical migration. In a study by Watanabe et al. (2006) in the Warm ...
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Sperm whales reduce foraging effort during exposure to 1 2 kH z sonar and killer whale sounds
... 12 sperm whales ( Physeter macrocephalus ) using suction ...tagged whales switched to a non- foraging, non- resting state during both experimental transmissions of low- frequency active sonar from an ...
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Abundance and distribution of sperm whales in the Canary Islands : can sperm whales in the Archipelago sustain the current level of ship strike mortalities?
... The survey was designed to cover an area extending from the islands' shelf-edge, across the slope and into abyssal waters; the 500 m isobath was used as the inner survey boundary while the outer boundary was 27 km ...
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Sperm whale echolocation behaviour reveals a directed, prior based search strategy informed by prey distribution
... layer, sperm whales navigated within it to locate individual prey (Figure ...that sperm whales benefit from visual cues, such as bioluminescence to find prey at depth (Fristrup and Harbinson ...
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Sperm whale diet variation by sex, location, year, social group and clan : Evidence from stable isotopes
... in the few cases that are not, cultural transmission acts to maintain the difference (Estes et al. 2003). We pro- pose that the differences in diet between the 4 clans of sperm whales found here reflect ...
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The effects of sound propagation and avoidance behaviour on naval sonar levels received by cetaceans
... pilot whales increased up to two seconds after sonar signals were heard (Rendell and Gordon, 1999), but as these whales are often very vocal (Nemiroff, 2009) the biological significance of these responses ...
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New England whalers in New Zealand waters, 1800 1850
... Kermadec Ground for the first time, while others resorted in increasing numbers to the grounds near Tonga, Society and Navigator Islands for sperm whales; all o:f' thes.e., however, drop[r] ...
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Extreme diving of beaked whales
... beaked whales studied here, which are relatively small compared to sperm whales, follow the same pattern and that the long periods of acoustically-inactive shallow diving between foraging dives ...
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Biological significance of sperm whale responses to sonar: comparison with anti predator responses
... that sperm whales exhibit different combina- tions of response type and/or response magnitude across all stimulus ...that sperm whales are likely able to discriminate among the different sound ...
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Ecological niches of three teuthophageous odontocetes in the northwestern Mediterranean Sea
... Sea, sperm whales, pilot whales and Risso’s dolphins prey exclusively or preferentially on ...the sperm whale used a deeper part of the slope as well as the closest offshore ...
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Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye
... of sperm whales was evaluated for two challenging samples: thick dense teeth with fine inner structures and an eye with detailed soft-tissue ...of sperm whale teeth are suitable methods for age ...
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