Sort Key 8
タイトル(別表記) Male sexual maturation of two Microtus species under laboratory conditions
フルテキストURL poalas_034_028.pdf
著者 松本 息吹| 竹下 渓竜| 目加田 和之|
抄録 It is important to know the optimal timing of mating to produce laboratory animals efficiently and to ensure the preservation laboratory strains. To clarify the characteristics of the male sexual maturity of two laboratory Mictorus strains, namely the “Mar” and “MrosA” strains, which are derived from M. arvalis and M. levis, respectively, the testes and epididymes from 4-, 6-, 8- and 10 week-old males were weighed and compared. Although the tissue weights increased gradually with age in the Mar strain, in the MrosA strain, the weight of the testis increased markedly from 4 to weeks of age and that of the epididymis increased from 6 to 8 weeks of age. In addition, the spermatozoa concentrations in the cauda epididymis at 6, 8, and 10 weeks of age in were measured in each strain. The sperm concentration increased in the Mar strain at 8 weeks versus 6 weeks in the MrosA strain. From these results, it is clear that there are differences in the patterns of the increases in testis and epididymis weight and sperm concentration between the two strains. It was suggested that males of the MrosA strain attain sexual maturity earlier than those of the Mar strain.
備考 寄稿(Contribution)
出版物タイトル 岡山実験動物研究会報
発行日 2018-04
34巻
出版者 岡山実験動物研究会
出版者(別表記) Okayama Association for Laboratory Animal Science
開始ページ 28
終了ページ 31
資料タイプ 学術雑誌論文
言語 Japanese
論文のバージョン publisher
Eprints Journal Name poalas
Sort Key 9
タイトル(別表記) Taxonomic status of Aco strain derived from spiny mice
フルテキストURL poalas_033_022_025.pdf
著者 持田 瞳| 目加田 和之|
抄録 Spiny mice are useful in regenerative research and as a model for precocial animals. In the present study, we investigated the taxonomic status of the Aco strain, which is derived from spiny mice of an unidentified species. Although this Aco strain has been tentatively considered A. cahirinus species, it was distinguished from this species based on conventional and G-banding chromosomal patterns of this strain. Subsequently, we determined the nucleotide sequence of the mitochondorial gene cytochrome b (Cyb) and constructed a molecular phylogenetic tree. We found that the Aco strain belongs to the same clade as A. dimidiatus. Based on this molecular analysis, we concluded that the Aco strain of spiny mice should be considered A. dimidiatus.
備考 寄稿(Contribution)
出版物タイトル 岡山実験動物研究会報
発行日 2017-04
33巻
出版者 岡山実験動物研究会
出版者(別表記) Okayama Association for Laboratory Animal Science
開始ページ 22
終了ページ 25
資料タイプ 学術雑誌論文
言語 Japanese
論文のバージョン publisher
査読 無し
Eprints Journal Name poalas
著者 目加田 和之|
発行日 2016-04
出版物タイトル 岡山実験動物研究会報
32巻
資料タイプ 学術雑誌論文