| Spatial and temporal patterns of Risso's dolphin echolocation in the Southern California Bight. | |
| | |
MedLine Citation:
|
PMID: 20058956 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Geographical and temporal trends in echolocation clicking activity can lead to insights into the foraging and migratory behaviors of pelagic dolphins. Using autonomous acoustic recording packages, the geographical, diel, and seasonal patterns of Risso's dolphin (Grampus griseus) echolocation click activity are described for six locations in the Southern California Bight between 2005 and 2007. Risso's dolphin echolocation click bouts are identified based on their unique spectral characteristics. Click bouts were identified on 739 of 1959 recording days at all 6 sites, with the majority occurring at nearshore sites. A significant diel pattern is evident in which both hourly occurrences of click bouts and click rates are higher at night than during the day. At all nearshore sites, Risso's dolphin clicks were identified year-round, with the highest daily occurrence at the southern end of Santa Catalina Island. Seasonal and interannual variabilities in occurrence were high across sites with peak occurrence in autumn of most years at most sites. These results suggest that Risso's dolphins forage at night and that the southern end of Santa Catalina Island represents an important habitat for Risso's dolphins throughout the year. |
| | |
Authors:
|
Melissa S Soldevilla; Sean M Wiggins; John A Hildebrand |
Related Documents
:
|
1442126 - Intra-neural electrical stimulation of cutaneous nociceptive fibres in humans: effects ... 11576646 - That's your left foot and... 11058736 - Evidence against a retinotopic-template matching in honeybees' pattern recognition. 18602636 - Stroke pattern classification during manual wheelchair propulsion in the elderly using ... 19375366 - A preliminary study into rider asymmetry within equitation. 21428516 - Directional perception of distributed sound sources. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Jan |
Date Detail:
|
Created Date: 2010-01-11 Completed Date: 2010-03-01 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
|
Languages: eng Pagination: 124-32 Citation Subset: IM |
Affiliation:
|
Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive 0205, La Jolla, California 92093, USA. melissa.soldevilla@duke.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustics
/
instrumentation Analysis of Variance Animals Behavior, Animal* California Dolphins* Echolocation* Pacific Ocean Photoperiod Seasons Signal Processing, Computer-Assisted Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Low-frequency target strength and abundance of shoaling Atlantic herring (Clupea harengus) in the Gu...
Next Document: Localization of sperm whales in a group using clicks received at two separated short baseline arrays...