St Andrews Research Repository

St Andrews University Home
View Item 
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.

Grey seal (Halichoerus grypus) pup mortality is not explained by local breeding density on the Island of North Rona, Scotland

Thumbnail
View/Open
twiss2003jzool83.pdf (268.8Kb)
Date
01/2003
Author
Twiss, SD
Duck, Callan David
Pomeroy, Patrick
Keywords
Halichoerus grypus
Pinnipeds
Breeding habitat
Pup mortality
GIS
QH301 Biology
Metadata
Show full item record
Altmetrics Handle Statistics
Altmetrics DOI Statistics
Abstract
Pre-weaning pup mortality of grey seals Halichoerus grypus in a breeding colony (North Rona, Scotland, U.K.) was examined in relation to the density of local adult females over two breeding seasons. Accurate, fine-scale maps of daily seal locations within a GIS database permitted the extraction of measures of female density determined at a range of spatial scales from 5 to 50 m around each pup on the date of death. Adult densities around live pups provided the null distribution of adult densities, which were tested against the distribution of densities where deaths occurred. Pre-weaning pup mortality at this colony was not related to any of our density measures. The proportion of pups dying each day showed no seasonal trends. Analysis of topographic features from a sub-meter digital terrain model for locations where deaths occurred suggested that there were fewer mortalities in prime pupping habitats. This could have been a direct effect of habitat or the relative quality of mothers in these habitats. The distance separating mothers and pups tended to be greater on the periphery of the colony compared to more central areas. Pups in the peripheral areas may be more exposed to predation by gulls.
Citation
Twiss , SD , Duck , C D & Pomeroy , P 2003 , ' Grey seal ( Halichoerus grypus ) pup mortality is not explained by local breeding density on the Island of North Rona, Scotland ' , Journal of Zoology , vol. 259 , no. 1 , pp. 83-91 . https://doi.org/10.1017/S0952836902003035
Publication
Journal of Zoology
Status
Peer reviewed
DOI
https://doi.org/10.1017/S0952836902003035
ISSN
0952-8369
Type
Journal article
Rights
This is the peer reviewed version of the following article: Grey seal pup mortality is not explained by local breeding density on the Island of North Rona, Scotland Twiss, S. D., Pomeroy, P. & Duck, C. D. Jan 2003 In : Journal of Zoology. 259, p. 83-9, which has been published in final form at http://dx.doi.org/10.1017/S0952836902003035. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Collections
  • University of St Andrews Research
URL
http://www.scopus.com/inward/record.url?scp=0037275696&partnerID=8YFLogxK
URI
http://hdl.handle.net/10023/7344

Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

Advanced Search

Browse

All of RepositoryCommunities & CollectionsBy Issue DateNamesTitlesSubjectsClassificationTypeFunderThis CollectionBy Issue DateNamesTitlesSubjectsClassificationTypeFunder

My Account

Login

Open Access

To find out how you can benefit from open access to research, see our library web pages and Open Access blog. For open access help contact: openaccess@st-andrews.ac.uk.

Accessibility

Read our Accessibility statement.

How to submit research papers

The full text of research papers can be submitted to the repository via Pure, the University's research information system. For help see our guide: How to deposit in Pure.

Electronic thesis deposit

Help with deposit.

Repository help

For repository help contact: Digital-Repository@st-andrews.ac.uk.

Give Feedback

Cookie policy

This site may use cookies. Please see Terms and Conditions.

Usage statistics

COUNTER-compliant statistics on downloads from the repository are available from the IRUS-UK Service. Contact us for information.

© University of St Andrews Library

University of St Andrews is a charity registered in Scotland, No SC013532.

  • Facebook
  • Twitter