Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations

During the winter and spring of 2000 and 2002, underwater calls of Weddell seals were recorded near Mawson. The goal was to determine if some call types were only given during the spring breeding season. The calls were classified into 10 broad types and the proportional usage of each was determined from May to December. All call types were present throughout the study period and during periods of darkness and light and at high, medium or low calling rates.

Taken from the abstract of the referenced paper:

Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii (Lesson, 1826)) near Mawson, Antarctica, investigated the hypothesis that certain call types function specifically in breeding behaviour. Recordings were collected at various sites in 2000 and 2002 from June to December. Twenty-four hour recordings were collected in 2002 at two sites. One hundred consecutive calls from each of 248 recordings were classified into one of ten common call types. Time to 100 calls provided the calling rate. The study period was divided into four periods representing initial sea-ice formation,

pre-pupping, pupping, and mating. Calling rate and light-dark differences were also examined. No presence-absence differences were observed for any of the call types with season. The largest difference between nonbreeding and breeding situations was an increase from 32.2% to 38.1% for descending whistles (F[3,244] = 4.483, p = 0.004). Trills gradually increased from 1.8% to 7.3% toward the mating period (F[3,244] = 30.932, p less than 0.001). The proportion of trills, chugs, descending whistles, and other call types also varied with calling rate and light-dark conditions. Some pre-reproductive behaviours may occur in winter, but no call types of Weddell seals function solely in the breeding season.

Identification info

Alternate title: Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations

Date (Publication): 2012-02-16

Edition: 1

Citation identifier

Dataset DOI

Title: Information and documentation - Digital object identifier system

Date (Publication): 2012-04-23

Citation identifier: ISO 26324:2012

Citation identifier: doi:10.4225/15/54D058FBBE555

Originator

Terhune, J.M. and Rouget, P.A.

Publisher

Australian Antarctic Data Centre

Principal investigator

TERHUNE, JOHN MOORE

Department of Biology

PO Box 5050

University of New Brunswick

Saint John

New Brunswick

E2L 4L5

Canada

+1 506 648 5633

+1 506 648 5811 (facsimile)

Principal investigator

ROUGET, PHIL A

Department of Biology

Saint John

PO Box 5050

University of New Brunswick

New Brunswick

Canada

Collaborator

TERHUNE, JOHN MOORE

Department of Biology

PO Box 5050

University of New Brunswick

Saint John

New Brunswick

E2L 4L5

Canada

+1 506 648 5633

+1 506 648 5811 (facsimile)

Name: CAASM Metadata

Website: https://data.aad.gov.au/metadata/records/ASAC_1132-3

Status: Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

+61 3 6232 3244

+61 3 6232 3351 (facsimile)

Topic category

Biota
Oceans

Extent

Description: Temporal Coverage

Temporal extent

TimePeriod: 2000-06-06 2002-12-11

Title: Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations

Date (Publication): 2012

Citation identifier: 90

Citation identifier: doi:10.1139/z11-131

Author

Elyse E. Doiron, Philippe A. Rouget, and John M. Terhune

Name: Canadian Journal of Zoology

Issue identification: 2

Page: 237-247