• Title/Summary/Keyword: Apodemus agrarius coreae

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: I. Geographic Variation of Morphometric Characters in Striped Field Mice, Apodemus agrarius coreae Thomas (한국산 설치류의 계통분류학적 연구 1.등줄쥐, Apodemus agrarius coreae Thomas 의 형태적 형질의 지리적 변이)

  • Koh, Hung-Sun
    • The Korean Journal of Zoology
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    • v.28 no.1
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    • pp.9-20
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    • 1985
  • Univariate and multivariate analyses of morphometric characters were performed with samples of striped field mice, Apodemus agrarius coreae Thomas, collected from Mt. Taebaek area, Mt. Wolak area, Mt. Palgong area, and Chongju area. It was confirmed that the samples of A. agrarius coreae were similar with one another to be grouped into a single subspecies. Moreover, clinal variation related with the altitude of localities where samples were collected was revealed in the first axis resulted from discriminant analysis and in the length of tail vertebrae.

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Variation of Mitochondrial DNA in Striped Field Mice, Apodemus agrarius coreae Thomas(Mammalia, Rodentia), from the Korean Penisula (한반도산 등줄쥐 Apodemus agrarius corease Thomas(포유강, 설치목)의 미토콘드리아 DNA의 변이)

  • 고흥선;유상규;김상복;유병선
    • Animal Systematics, Evolution and Diversity
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    • v.9 no.2
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    • pp.171-179
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    • 1993
  • Thirty nine samples of striped field mice (Apodemus agrarius coreae Thomas) from eight localities in the Korean peninsula were used for the analyses of mitochondria1 DNA (mtDNA) fragment patterns resulted from the digestion with eight restriction enzymes. A total of 31 fragments were recognized and seven mtDNA clones were revealed: one clone consisted of 32 among 39 samples from eight localities (1 of 1 from Sogcho, 4 of 5 from Mt. Chiak, 3 of 3 from Mt. Weolak, 2 of 2 from Mt. Sogri, 2 of 2 from Mt. Deokyoo, 3 of 4 from Mt. Jiri, 2 of 4 from Haenam, and 15 of 18 from Cheongju). The nucleotide-sequence divergences (p) among seven mtDNA clones ranged from 0.2% to 2.3% and distinct subgroups were not resulted from the grouping of these clones. It is confirmed that striped field mcie from the Korean peninsula is a single subspecies of Apodemus agrarius (A. agrarius coreae) because they were not divided into separate subgroups in their mtDNA genotypes.

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G-and C-Banding Pattern Analyses of Korean Rodents: I. Chromosome Banding Patterns of Striped Field Mice (Apodemus agrarius coreae) and Black Rats (R. rattus rufescens)

  • Koh, Hung-Sun
    • The Korean Journal of Zoology
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    • v.25 no.2
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    • pp.81-92
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    • 1982
  • G- and C-banding pattern analyses of striped field mice (Apodemus agrarius coreae) using 17 specimens from four localities in Korea revealed that centromeric heterochromatin results in the variation of No. 1 chromosome pair (telocentri $c_telocentric), i.e., centromeric heterochromatin sometimes appeared to be recognized as short arm. G- and C-banding patterns of four black rats (R. rattus rufescens) from two localities in Korea showed that No. 1 chromosome polymorphism (telocentri $c_telocentric) is due to pericentric inversion. In addition, G- and C-banding patterns of black rats mentioned above are idiogrammed.ammed.

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: I. An Analysis on Striped Field Mice, Apodemus agrarius coreae Thomas, from Cheongju

  • Koh, Hung-Sun
    • The Korean Journal of Zoology
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    • v.26 no.2
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    • pp.123-134
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    • 1983
  • Age variation and secondary sexual dimorphism in four external and 27 cranial characters of 102 specimens of striped firld mice, Apodemus agrarius coreae Thomas, from Cheongju, Korea, were analyzed statistically. Specimens were classified as subadults, young adults, middle-aged adults, and old adults, and variation of morphometric characters among the four age classes was evident. Significant secondary sexual dimorphism among sexes of the same age class was not revealed. Teh specimens of the same age class have to be used in further analyses to clarify geographic variation of morphometric characters in Apodemus agrarius from Korea.

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Comparative Studies on the Ultrastructures of Non-Ciliated and Ciliated Epithelial Cells in the Ductus Epididymidis of Apodemus agrarius coreae (등줄쥐 (Apodemus agrarius coreae)의 부고환관의 무섬모상피세포와 섬모상피세포의 미세구조에 대한 비교 연구)

  • Lee, Jung-Hun
    • Applied Microscopy
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    • v.28 no.3
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    • pp.345-362
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    • 1998
  • In order to the comparative morphological study of the non-ciliated and ciliated epithelial cells, and to elucidate the process of degeneration of non-ciliated epithelial cell of the ductus epididymidis, Korean striped field mouse, Apodemus agrarius coreae was examined with light and transmission electron microscopes. The morphological characteristics of non-ciliated epithelial cell, the cell types of the caput epididymidis (Cp), corpus epididymidis (Cr) and cauda epididymidis (Cu) were long-columnar, short-columnar and short-cuboudal, respectively. The mitochondria and rough endoplasmic reticulum tended to be broken as they immigrated from Cp to the Cu. The Golgi acted vigorously at the Cp, but the Golgi was inactive in Cr and Cu. The secretory vesicles and lysosomes were increased gradually from Cp to the Cu. The process of degeneration of the non-ciliated epithelial cells observed in the Cp, Cr and Cu epididymidis. The increase of the non-ciliated epithelial cells, and its degeneration were observed more often from Cp to the Cu. The morphological characteristics of the ciliated epithelial cells, the cell types of the Cp, Cr and Cu were long-columnar, short-columnar and short-cuboudal, respecptively like the non-ciliated epithelial cells. The stereocilia was long and slender at the Cp and Cr, while Cu was very short. The pinocytotic vesicles and absorptive vesicles were increased from the Cp to the Cu. Numerous disintergrated products was existed at the Cr including the Cp, but Cu were not observed. A significant amount of lysosomes existed at the Cp and Cr epithelial cells, but they were not observed in Cu epithelial cells.

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Seminiferous Epithelium Cycle and Developmental Stages of Spermatids in the Apodemus agrarius coreae

  • Lee, Jung-Hun
    • Biomedical Science Letters
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    • v.13 no.1
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    • pp.61-69
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    • 2007
  • The cycle of the seminiferous epithelium and the development of spermatids of Apodemus agrarius coreae were observed using a light microscope. The cycle of the seminiferous epithelium was divided into 10 stages, and developing spermatids were subdivided into 10 steps. The Golgi phases occurs the first two steps ($St_1,\;St_2$), and the cap phases had the next two consecutive steps ($St_3$ and $St_4$). The acrosomal phases consisted of steps $5{\sim}8$ ($St_5-St_8$), and the remaining two steps consisted the maturation ($St_9$) and spermiation ($St_{10}$) phases, respectively. Type Ad spetmatogonia are appeared in all stages (I-X). Type Ap spermatogonia appeared from stage I and II, In spermatogonia from stage III, IV and V, and B spermatogonia from stages VI. The leptotene spermatocytes appeared from stage VII, zygotene from stages I, II, VIII, IX and X, pachytene from stage III to VIII, diplotene in stage IX, and meiotic figures and secondary spermatocytes in stage X. These data are considered in relation to interspecific differences in sperm morphology.

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Dopaminergic neurons of the substantia nigra and ventral tegmentum in the stripped field mouse(apodemus agrarius coreae) (야생등줄쥐 흑색질 및 배쪽피개의 dopamine성 신경세포)

  • Jeong, Young-gil;Kim, Kil-soo;Lee, Chul-ho;Yoon, Won-kee;Hyun, Byung-hwa;Oh, Yang-seok;Won, Moo-ho;Kim, Moo-kang
    • Korean Journal of Veterinary Research
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    • v.37 no.3
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    • pp.489-497
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    • 1997
  • The distributions characteristics of neurons displaying immunoreactivity to the catecholamine synthetic enzymes, tyrosine hydroxylase(TH), dopamine-${\beta}$-hydroxylase(DBH), and phenylethanolamine-N-methyltransferase(PNMT) were examined in the adjacent sections of the substantia nigra & ventral tegmentum of the Striped Field Mouse(Apodemus agrarius coreae). None of these cell groups displayed either DBH or PNMT immunoreactivity. Many TH-immunoreactive neurons were present in the substantia nigra & ventral tegmentum. The major dopaminergic cell(TH-positive, DBH- & PNMT-negative) group in the midbrain was present in the pars compacta of substantia nigra and adjacent ventral tegmentum. And smaller dopaminergic cell groups Were found in the pars reticulata of the substantia nigra and central liner nucleus.

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Tyrosine hydroxylase immunoreactive neurons of the olfactory bulb in the stripped field mouse(apodemus agrarius coreae) (야생등줄쥐 후각망울의 Tyrosine hydroxylase 면역반응신경세포)

  • Jeong, Young-gil;Lee, Nam-seob;Kim, Kil-soo;Lee, Chul-ho;Hyun, Byung-hwa;Won, Moo-ho;Kim, Moo-kang
    • Korean Journal of Veterinary Research
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    • v.37 no.3
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    • pp.499-508
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    • 1997
  • The distributions and morphological characteristics of neurons displaying immunoreactivity to the catecholamine synthetic enzymes, tyrosine hydroxylase(TH), dopamine-${\beta}$-hydroxylase(DBH), and phenylethanolamine-N-methyltransferase (PNMT) were examined in the adjacent sections of the olfactory bulb of the Striped Field Mouse(Apodemus agrarius coreae). None of these cell groups displayed either DBH or PNMT immunoreactivity. Many TH-immunoreactive neurons were present in the olfactory bulb. The vast majority of such cells occurred in the glomerular layer as periglomerular cells surrounding the glomeruli. Numerous addtional cells were present in the external plexiform layer, and scattered in the mitral cell layer and internal plexiform layer. Also TH-immunoreactive neurons were found in the glomerular layer and granular layer of the accessory olfactory bulb.

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Geographic Variation of Morphometric Charactera among Three Subspecies of Striped Field Mice, Apodemus agrarius Pallas (Muridae, Rodentia), from Korea (한국산 등줄쥐, Apodemus agrarius Pallas (Muridae, Rodentia), 3아종에 있어서의 형태적 형질들의 지리적 변이)

  • Koh, Hung-Sun
    • The Korean Journal of Zoology
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    • v.29 no.4
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    • pp.272-282
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    • 1986
  • Univariate and multivariate analyses of morphometric characters were performed with samples of three subspecies of striped field mice (Apodemus agrarius coreae, A. agrarius pallescens, and A. agrarius chejuensis). It was found that the samples of A. agrarius chejuensis from Jeju-Do were distintc from those of the other two subspecies from the Korean peninsular, whereas subspecies coreae was similar to subspecies pallescens: it is concluded that A. agrarius pallescens is a synonym of A. agrarius coreae. Further analyses will be needed to clearify the subspecific status of A. agrarius chejuensis.

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