Minke Whale (Balaenoptera Acutcrostrata) Response to a Sound Playback Experiment

2003 ◽  
Author(s):  
Daniel P. Costa ◽  
Jason Gedamke
Keyword(s):  
Minke Whale ◽  
Playback Experiment

New genetic evidences for distinct populations of the common minke whale (Balaenoptera acutorostrata) in the Southern Hemisphere

Polar Biology ◽  
2021 ◽  
Author(s):  
Lucas Milmann ◽  
Mioko Taguchi ◽  
Salvatore Siciliano ◽  
Júlio E. Baumgarten ◽  
Larissa R. Oliveira ◽  
...  
Keyword(s):  
Southern Hemisphere ◽  
Minke Whale ◽  
Balaenoptera Acutorostrata ◽  
The Common ◽  
Common Minke Whale

A desert songbird with no confamilials in the Western Hemisphere (Verdin, Auriparus flaviceps) investigates divergent conspecific songs

The Auk ◽  
2021 ◽  
Author(s):  
Emma I Greig ◽  
Eva Kinnebrew ◽  
Max L Witynski ◽  
Eric C Larsen
Keyword(s):  
North America ◽  
Geographic Variation ◽  
Playback Experiment ◽  
Western Hemisphere ◽  
Monotypic Genus ◽  
Vocal Responses ◽  
Song Variation ◽  
Desert Regions ◽  
Close Relatives

Abstract Most birds that show geographic variation in their songs discriminate between local and foreign songs, which may help them avoid unnecessary conflicts with vagrant individuals or similar-sounding congeners. However, some species respond equally to foreign and local songs, which may be useful if foreign individuals present territorial threats or if there are no sympatric congeners to avoid. Species without sympatric congeners are not commonly tested in playback studies, but they offer an opportunity to see how song variation and recognition unfolds when the pressure to avoid similar congeners is absent. Here, we use Verdins (Auriparus flaviceps), a monotypic genus of songbird with no confamilials in North America, to explore song variation and recognition in a species living without close relatives. We assessed geographic variation in song across the Verdin range and conducted a playback experiment using exemplars from 2 acoustically divergent and geographically distant regions as treatments. We found significant geographic variation in song that mapped well onto ecologically distinct desert regions. We found that Verdins had stronger vocal responses to local-sounding songs, but had equal movement responses to local-sounding and foreign songs. These results are similar to results found in other species without sympatric congeners and provide an example of a species that investigates acoustically divergent conspecific songs, despite recognizing salient differences in those songs.

A report on the Norwegian minke whale hunt

Marine Policy ◽  
1998 ◽  
Vol 22 (2) ◽  
pp. 161-174 ◽  
Author(s):  
Trond Bjørndal ◽  
Jon M Conrad
Keyword(s):  
Minke Whale

scholarly journals The effects of unrelated offspring whistle calls on capybaras (Hydrochoerus hydrochaeris)

2014 ◽  
Vol 74 (3 suppl 1) ◽  
pp. S171-S176
Author(s):  
E Dos Santos ◽  
RS Tokumaru ◽  
SLG Nogueira Filho ◽  
SSC Nogueira
Keyword(s):  
Sound Source ◽  
Vocal Communication ◽  
Bird Song ◽  
Playback Experiment ◽  
Parental Responsiveness ◽  
Hydrochoerus Hydrochaeris ◽  
Males And Females ◽  
Gender Influences

Parent-offspring vocal communication, such as the isolation call, is one of the essential adaptations in mammals that adjust parental responsiveness. Thus, our aim was to test the hypothesis that the function of the capybara infants' whistle is to attract conspecifics. We designed a playback experiment to investigate the reaction of 20 adult capybaras (seven males and 13 females) to pups' whistle calls – recorded from unrelated offspring – or to bird song, as control. The adult capybaras promptly responded to playback of unrelated pup whistles, while ignoring the bird vocalisation. The adult capybaras took, on average, 2.6 ± 2.5 seconds (s) to show a response to the whistles, with no differences between males and females. However, females look longer (17.0 ± 12.9 s) than males (3.0 ± 7.2 s) toward the sound source when playing the pups' whistle playback. The females also tended to approach the playback source, while males showed just a momentary interruption of ongoing behaviour (feeding). Our results suggest that capybara pups' whistles function as the isolation call in this species, but gender influences the intensity of the response.

scholarly journals Chitinolytic bacteria in the minke whale forestomach

1996 ◽  
Vol 45 (Suppl. 1) ◽  
pp. 287-287
Author(s):  
MA Olsen ◽  
TH Aagnes ◽  
W. Sørmo ◽  
SD Mathiesen
Keyword(s):  
Minke Whale ◽  
Chitinolytic Bacteria

scholarly journals Whales as Indicators of Historical and Current Changes in the Marine Ecosystem of the Indo-Pacific Sector of the Antarctic

2020 ◽  
Author(s):  
Yoshihiro Fujise ◽  
Luis A. Pastene
Keyword(s):  
Marine Ecosystem ◽  
Recruitment Rate ◽  
Minke Whale ◽  
Past Century ◽  
Baleen Whale ◽  
The Past ◽  
Antarctic Minke Whale ◽  
Minke Whales ◽  
Nutritional Conditions ◽  
The Antarctic

We review the scientific information on whales that could be indicative of historical and current changes in the ecosystem in the Indo-Pacific sector of the Antarctic. The increased krill availability in the middle of the past century as a result of the heavy harvesting of the larger baleen whale species could have been translated into better nutritional conditions for the Antarctic minke whale, resulting in a decreasing trend in the age at sexual maturity and an increasing trend in recruitment rate and hence total population size between approximately 1940 and 1970. This nutritional condition has deteriorated more recently, as revealed by a decrease in energy storage and stomach content weight since the 1980’s; these changes coincide with appreciable increases in the abundances of humpback and fin whales, which were heavily harvested in the first half of the past century. The historical demographic changes observed in the Antarctic minke whale are consistent with the pattern to be expected under the krill surplus hypothesis, with minke whales now again competing with other (recovering) baleen whale species for krill. However, these minke whales could also be using alternative feeding areas (e.g. polynias within the pack-ice) in response to the increase in abundance and geographical expansion of these other large whale species. This could provide an alternative explanation for indications from sighting surveys and population models of a decrease and then re-stabilisation of minke whale abundance in open water areas since the 1970s.

Histological Observation of the Proper Gastric Gland in Minke Whale, Balaenoptera acutorostrata

2003 ◽  
Vol 65 (3) ◽  
pp. 423-426 ◽  
Author(s):  
Tetsuya SHIMOKAWA ◽  
Daishiro YAMAGIWA ◽  
Eiichi HONDO ◽  
Shigetoshi NISHIWAKI ◽  
Yasuo KISO ◽  
...  
Keyword(s):  
Gastric Gland ◽  
Minke Whale ◽  
Histological Observation ◽  
Balaenoptera Acutorostrata
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