Underwater Vocalizations Of Harbor Seals

Underwater vocalizations of Pacific Harbor Seals ( Phoca vitulina richardii ) Mehgan M. Clark

Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://photos.aznightbuzz.com/gallery/view/1544

Pinniped Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://www.brookfieldzoo.org/pagegen/images/fix/sealcut.jpg

Background Ecology (Riedman, 1990) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],https://www.washington.edu/burkemuseum/collections/mammalogy/mamwash/phvi.html

Background Mating Behavior (Riedman, 1990) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Background-Acoustic Studies ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Photo By: Mehgan Clark

Background-Acoustic Studies ,[object Object],[object Object],[object Object],[object Object],[object Object],Photo By: Mehgan Clark

Background-Harbor Seal Acoustics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sensory Systems and Communication (Renouf, 1991) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://www.brookfieldzoo.org/pgpages/pagegen.278.aspx?shttplink=../pgpages/pagegen.278.aspx&nsection=2

Research at a Zoo ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Photo By: Mehgan Clark

Goals ,[object Object],[object Object],[object Object],[object Object],Photo By: Mehgan Clark

Materials ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Photo By: Mehgan Clark

Software Limitations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Methods ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Photo By: Dr. Thomas

Pinniped Point Graphic Courtesy Brookfield Staff Legend Hydrophone Recording Site = Animal Shift Gates N West Holding: 15’x9’x5’ 5050 gallons East Holding: 15’x6’x4’ 2700 gallons Pool #1: 38,000 gallons Pool #2: 135,000 gallons Pool #3: 125,000 gallons Pool #4: 32,000 gallons Harbor Seals Harbor Seals Walrus Sea Lion and Harbor Seals

Table 1. Animal Information Black Spots on Stomach Wild F 17 Stirling Phoca vitulina Crown on Forehead Pink Spots on Neck Wild F 17 Banda Phoca vitulina Completely Blind Darker Color Captive M 9 Scooter Phoca vitulina Notes Acquisition: Wild vs. Captive Born Sex Age Name Species

Acoustical Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object],Photo By: Mehgan Clark

Component One Dominant Beginning Frequency Dom. Max. Freq. Dominant Minimum Frequency Dominant Ending Frequency Oscilogram Spectrogram Total Duration

Study Phases ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Photo By: Mehgan Clark

Results-Call Types ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Call Parameter Means and Standard Deviations 1.84 ±0.65 336.5 ±148.1 1349.8 ±452.1 797.2 ±210.2 727.2 ± 133.7 Short Roar 4.80 ±1.77 210.6 ±18.4 1329.3 ±319.8 707.5 ±191.1 611.3 ±98.8 Long Roar 0.94 ±0.55 291.2 ±163.1 2060.2 ±566.6 1026.1 ±325.2 1026.1 ±315.1 Growl Comp. Dur. Dom. Min. Freq. Dom. Max. Freq. Dom. Ending Freq. Dom. Beg. Freq. Call Type

Dominant Maximum Frequency in All Three Call Types

Dominant Minimum Frequency in All Three Call Types

Results- Principle Component Analysis ,[object Object],[object Object]

0.424 0.843 -0.062 Total Duration 0.579 -0.076 -0.189 Interval Duration 0.362 0.578 - 0.653 Component Duration 0.305 - 0.621 0.150 Dom. Min. Freq. 0.143 0.097 0.747 Dom. Max. Freq 0.441 -0.198 0.701 Dom. End. Freq 0.263 -0.203 0.811 Dom. Beg. Freq -0.213 0.492 0.758 Comp. Analyzed -0.199 0.514 0.712 Components in Series

Results- Principle Component Analysis ,[object Object],[object Object],[object Object],[object Object]

Results: Two Sample T-tests p=0.000 unless noted df=254 df=235 5.550 12.451 9.351 14.106 LR vs. GR -2.221 p=0.105 10.731 6.526 9.753 SR vs. GR -9.537 -0.417 p= 0.667 -3.569 -7.891 SR vs. LR DMINF DMAXF DEF DBF Comparisons

Hierarchical Clustering ,[object Object],[object Object],[object Object],[object Object]

Results-Calls Per Minute ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Average Calls per Minute Calculated for Each Phase

Behaviors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Photo By: Mehgan Clark

Conclusions ,[object Object],[object Object],[object Object],[object Object],Banda http://static.flickr.com/79/250184186_7397d1ee5f_m.jpg

Conclusions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Photo By: Mehgan Clark

Future Research ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Literature Cited ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Acknowledgments ,[object Object],[object Object],[object Object],[object Object],[object Object]

Underwater Vocalizations Of Harbor Seals

Recommended

Recommended

More Related Content

Viewers also liked

Viewers also liked (10)

Similar to Underwater Vocalizations Of Harbor Seals

Similar to Underwater Vocalizations Of Harbor Seals (20)

Underwater Vocalizations Of Harbor Seals

Editor's Notes