摘要:

AbstractThere are about 60 species of shrews of the genusSorexdistributed over the Nearctic and Palaearctic regions; these are usually divided into the subgeneraSorex, OtisorexandMicrosorex. The Old World species are listed and their phylogeny discussed, with special emphasis laid on the karyotypes. It is proposed that the Old World forms should be divided into the subgeneraHomalurus, SorexandOtisorex. It is also suggested that the subgenusSorexcould be divided into at least three taxonomic units.

ISSN:0305-1838    

DOI:10.1111/j.1365-2907.1991.tb00284.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractIt is now recognized that genetic data have an important role in the management of wild and captive populations. Valuable samples and data can often be obtained when animals are handled for other reasons, but unless the personnel involved are aware of the correct procedures, the sample taken will probably be useless. This article outlines appropriate procedures, and the data that can be obtained from them, so that when an opportunity arises, a quick decision can be made about feasibility of sampling and the usefulness of the data for management or research. This paper does not cover the veterinary aspects of obtaining the sample, nor its laboratory analysis, which are assumed to be well understood by the donor and recipient organizations, respectively. Every attempt has been made to develop techniques which are simple, and allow storage of the sample while arrangements are made with a suitable recipient laboratory.

ISSN:0305-1838    

DOI:10.1111/j.1365-2907.1991.tb00285.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractA sample of 166 Stoats collected from Craigieburn Forest Park, Canterbury, New Zealand, was used to assess the usefulness of seven different methods of age determination. All the methods made use of characters which do change with age, but not all are equally good at defining useful age classes. The recommended approach is to use a combination of skull and baculum measurements to identify young animals, followed by counting of the canine cementum annuli of adults. If the skull or baculum is broken or not available, visual assessment of the status of the nasal sutures, the lateral suprasesamoid tubercle of the femur and the wear of the carnassial teeth are the next best options for distinguishing the young. Kopein's index based on the closure of the pulp cavity of the canines, and the zonation visible in the periosteal bone of the mandible, are unreliable.

ISSN:0305-1838    

DOI:10.1111/j.1365-2907.1991.tb00286.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY