Do B chromosomes affect morphometric characters in yellow-necked mice Apodemus flavicollis (Rodentia, Mammalia)?
2000
Тип документа:
Чланак у часопису (Објављена верзија)
,
© 2000 by the Polish Academy of Sciences. Mammal Research Institute
Метаподаци
Приказ свих података о документуАпстракт:
The presence of B chromosomes in the yellow-necked mouse Apodemus flavicollis
(Melchior, 1834) was analyzed in 320 adult animals from four localities in Yugoslavia.
Our aim was to assess the effects of B chromosomes on certain morphometric characteristics. The characters that were chosen are included in the taxonomic discrimination
of this particular species as well as the sibling species Apodemus sylvaticus (Linnaeus,
1758). B chromosomes were found in all the localities with frequencies ranging from
21.6% to 42.9%. It was ascertained that different frequencies of animals with B chromosomes change the slope of the regression curve of the length of foramina incisiva (FI)
relative to the distance from the 3rd upper molar to the incisor (IM3). This finding
questions the validity of use of this relative value in taxonomy without taking into
consideration karyological data. It was also established that the relative length of the tail
(the body/tail ratio) significantly increase in the presence of B chromosomes. As this
index demonstrates significant geographic variability the result could be taken as a trend
only
Кључне речи:
Apodemus flavicollis; B chromosomes; morphometric characters; taxonomy; discriminating charactersИзвор:
Acta Theriologica, 2000, 45, 1, 129-135Финансирање / пројекти:
- E-0322
DOI: 10.4098/AT.arch.00-14
ISSN: 0001-7051