• Title/Summary/Keyword: Apodemus agrarius coreae

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Systematic Studies of Korean Rodents : IV. Morphometric and Chromosomal Analyses of two Species of the Genus Apodemus (Muridae) (한국산 설치류의 계통분류학적 연구 : 4. 붉은쥐 속 2종의 염색체 및 형태적 형질 의 분석)

  • 고흥선
    • Animal Systematics, Evolution and Diversity
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    • v.4 no.2
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    • pp.103-120
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    • 1988
  • 한국에 서식하고 있는 붉은쥐속 2 종, 등줄쥐(Apodemus agrarius coreae, A. agrarius chejuensis)와 흰넓적다리 붉은쥐 (A. peninsulae peninsulae)의 염색체 및 형태적 형질의 분석을 하였다. A. agrasius coreae는 작은 형이고, A. agrarius chejuensis 와 A .peninsulae peninsulae 는 큰 형이었다. 또한A. agrarius chejuensis 는 A.peninsule peninsulae 보다도 큰 편이었다. A.peninsulae peninsulae 에 있는 B chromosomes 은 C.-negative 즉 진정염색질임이 밝혀졌다.

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Seminiferous Epithelium Cycle and Developmental Stages of Spermatids in the Clethrionomys rufocanus

  • Lee, Jung-Hun
    • Development and Reproduction
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    • v.17 no.2
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    • pp.87-97
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    • 2013
  • The seminiferous epithelium cycle and developmental stages of spermatids in Clethrionomys rufocanus were observed under a light microscope. The seminiferous epithelium cycle was divided into 8 stages. Type Ad spermatogonia appeared through all stages. Type Ap, In, and B spermatogonia appeared in stages I, II, III, and IV. In the first meiosis prophase, the leptotene spermatocytes appeared from stage V, the zygotene spermatocytes in stages I, VI, VII, VIII, the pachytene spermatocytes from stages II to VI, the diplotene spermatocytes in stage VII. The meiotic figures and interkinesis spermatocytes were observed in stage VIII. Developing spermatids were subdivided into 10 steps, based on the morphological characteristics such as the acrosome formation changes in spermatozoa, nucleus, cytoplasm, and spermiation changes. The C. rufocanus spermatocytogenesis and spermiogenesis results displayed similar results with Apodemus agrarius coreae and A. speciosus peninsulae. Considering all the results, the spermatogenesis may be useful information to analyze the differentiation of spermatogenic cells and the breeding season.

Systematic Studies of Korean Rodents : II. A Chromosome Analysis in Korean Field Mice, Apodemus peninsulae peninsulae Thomas (Muridae, Rodentia), From Mungyong, with the Comparison of Morphometric Characters of these Korean Field Mice to Symptric Striped Field Mice, A. agrarius coreaee Thomas (한국산 설치류의 계통분류학적 연구 : II. 문경산 흰 넓적다리 붉은쥐, Apodemus peninsulae peninsulae Thomas, 의 염색체 분석 및 문경산 등줄쥐, odemus Apagrarius coreae 와의 형태적 형질의 비교분석)

  • 고흥선
    • Animal Systematics, Evolution and Diversity
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    • v.2 no.1
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    • pp.1-10
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    • 1986
  • 문경산 흰 넓적다리 붉은 쥐, Apodemus peninsulae peninsulae, 의 염색체 핵형 분석과 단변량 및 다변량분석방법들을 사용한 등줄쥐, Apodemus agrarius coreae, 와의 형태적 형질의 비교를 하였다. 흰 넓적다리 붉은 쥐의 염색체수는 2n=50-54R지 수적 변이를 보였다. 차단부 염색체의 수는 48개로 개체간에 일정하였으나 , 중부 염색체의 수는 2-6개의 변이가 나타났다. 형태적 형질의 분석결과는 등줄쥐보다 흰 넓적다리 붉은 쥐가 크다고 판정되었으며 가장 구별이 잘 되는 경구개의 길이였다.

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Trombiculid miters (Acarina: Trombiculidae) from Apodemus agrarius coreae caught at Pochun-gun, Gyeonggi Province and Chinhae-city, Kyongnam Province (경기도 포천군과 경상남도 진해시 등줄쥐의 털진드기 (Acarina: Tronbiculidae) 기생상)

  • 이한일;백락주
    • The Korean Journal of Parasitology
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    • v.27 no.2
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    • pp.141-144
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    • 1989
  • During October-December 1987, chigger mites infested on the striped field mice (Apodemus agrarius cereae) collected at Pochun-gun, Gyeonggi Province and Chinhae city, Kyongnam Province were identified. . 1. Of 171 back-striped mice collected, chigger mites wire found from 58 mice, showing 33.9% of infestation rate. 2. Total 865 chigger mites collected were classified into seven species; Leptotrombidium pallidum (4.3%), L. palpate(23.0%), L. orienpalis(20.2%), L. xetum(19.0%), Neotrombicula tamiyai(32.9%), JV. japonica(0.25%) and Euschongastia koreaensis(0.3%). Though the most dominant species in number was N. tamiyai(32.9% of the total), this species was collected at very limited locality and for a short period. Therefore, most common species in Korea seems to be L. palpale which was found at all localities throughout the whole survey period. L. pallidum which is known as the vector species of tsutsugamushi disease in Korea was collected in a very low number(4.3% of the total chiggers collected). 3. The number of chigger mites infested on a host animal showed great variations from one chigger up to 207 chiggers. The present study has shown that there may be other Leptotrombidium species mite(s) for the vector and host of tsutsugamushi disease in Korea.

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Variation of Mitochondrial DNA in Two Subspecies of Striped Field Mice, Apodemus agrarius coreae and Apodemus agrarius chejuensis, from Korea (한국산 등줄쥐 2아종(Apodemus agrorius coreae and Apodemus agrarius chejuensis)의 미토콘드리아 DNA의 변이)

  • 고흥선;유병선
    • The Korean Journal of Zoology
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    • v.35 no.3
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    • pp.332-338
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    • 1992
  • Samples of ho subspecies of striped field mice, Apodemus agrarius coreue & Apodemus ograrius cheiuensis, from four localities in Korea were used for the analyses of mitochondrial DNA fragment patterns resulted from the digestion with eight restriction enzvmes. A total of 31 fragments were recognized and 15 clones were revealed. The 15 clones were grouped into four major subgroups. One sample from Cheongiu was distinct, and formed one of the four major subgroups: the mean divergence wi6 other subgroups was 4.6 per cent, and extensive analyses using samples from various sites are necessary to clarify the taxonomic status of the subgroup. Samples from Cheju island constituted another subgroup, and they should be named as hpodemus cheiuensis. Samples from Wan island composed still another subgroup, and thew seemed to be another population of Apodemus chejuensis: further analvses are needed for the classification of Apodemus cheiuensis. In the last subgroup composed of six of seven samples from Cheongiu and four samples from Haenam, two samples from Cheonsiu and one sample from Haenam were identical in their mitochondrial genotypes, indicating that these striped field mice from Cheongiu and Haenam have close maternal relationship.

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Systematic Studies of Korean Rodents. V. Morphometric and Chromosomal Analyses on Island Populations of Striped Field Mice (Apodemus agrarius coreae) in Southwestern coasts of the Korean Peninsula (한국산 설치류의 계통분류학적 연구 5.한반도 남서해안의 섬들에 살고 있는 등줄쥐들의 형태적 형질 및 염색체의 분석)

  • Koh, Hung Sun
    • Animal Systematics, Evolution and Diversity
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    • v.5 no.1
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    • pp.1-12
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    • 1989
  • Samples of striped field mice, Apodemus agrarius Pallas, from eight localities in s southwestern islands and coasts in Korea were collected and analyzed together with samples from the mainland and Jeju island. In chromosomal analyses no variation was revealed in karyotypes among samples from Korea. In morphometric analyses samples from Wan and Bogil islands formed a large-size g group (A. agrarius chejuensis) with those from Jeju island, whereas samples from Jin and H Hajo islands formed a small-size group (A. agrarius coreae) with those from the mainland including southwestern coasts It is supposed that small-size population of striped field mice in Wan and Bogil islands w were extinct and replaced by large-szie population of striped field mice immigrated from Jeju island by humans.

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Histopathologic Findings in Tissues of Rodents after Inoculation with Hantaan Virus (한탄 바이러스를 접종한 설치류의 병리조직학적 소견)

  • Ahn, In-Suk;Lee, Ho-Wang;Lee, Yong-Ju;Seong, In-Wha;Baek, Luck-Ju;Choi, Jong-Sang
    • The Journal of the Korean Society for Microbiology
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    • v.19 no.1
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    • pp.1-10
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    • 1984
  • The occurrence of Hemorrhagic fever with renal syndrome was noted for the first time among the United Nations troops in Korea in 1951. In 1976, Lee and Lee demonstrated for the first time an antigen in the lungs of a striped field mouse, Apodemus agrarius, which gave specific immunofluorescent reactions with sera from patients convalescent from Korean hemorrhagic feve (KHF). The natural reservoir host of KHF is Apodemus agrarius coreae mice in rural endemic areas in Korea. Clinical manifestations of acute illness do not occur in infected Apodemus agrarius. Infected rodents excrete large amounts of virus in saliva, in urine and in feces for a long period of time. In this study, the tissues of Apodemus agrarius, Wistar rat and Balb/C mouse were inoculated with Hantaan virus and subsequently observed for any histopathologic findings. 1. In lungs, infiltration of lymphocytes in alveolar septa and peribronchial region and thickening of and giant cell formation in alveolar septa were observed. 2. In kidney, vascular congestion, interstitial hemorrhage in corticomedullary junction and partial microscopic hemorrhage in urinary space were found. 3. In spleens, vascular congestion, old and recent hemorrhage and multinucleated giant cell formation were seen.

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Spermiogenesis in the Korean Striped Fleid Mouse Apodcmus agrarius coreae (한국산 등줄쥐(Apodemus agrarius coreae)에서의 정자변태)

  • 손성원;이정훈
    • The Korean Journal of Zoology
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    • v.38 no.3
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    • pp.395-404
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    • 1995
  • In order to study the process of spermiogenesis of the korean striped field mouse Apodemus agrorfus coreae, the cell differentiation of seminiferous epithelium and morphological features of mature sperm in cauda epididymis was examined and the results are as follows: Spermiogenesis was divided, according to the features of cell structure; Golgi, cap, acrosome and spermiation phases were further subdivided into two steps of early and late phases respectively, and maturation phase has only one step. Hence, the spermiogenesis consists of nine phases. in the changes of the chromatin in nucleus, the chromatin granules began to be condensed in the cap phase and the condensation proceeded to form a globular of nucleus at the acrsome phase. Finally, the chromatin regularization was completed and perfect nucleus of sperm was formed at the maturation phase. Sperm head had the falciform, and the outer dence fibers of middle piece were arranged in a horseshoe fashion. The outer dence fiber number 1, 5, 6 and 9 was larger than other fiber number 2, 3, 4, 7, 8.

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