• 제목/요약/키워드: genital segment

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솔잎혹파리(Thecodiplosis japonensis Uchida et Inouye)에 관한 연구 II - 성충 생식절의 표면미색구조 - (External Ultrastructure of the Adult Genital Segments of Pine Needle Gall Midge, Thecodiplosis japonensis Uchida et Inouye)

  • 한성식;박용철;이찬용
    • 한국응용곤충학회지
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    • 제27권3호
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    • pp.144-148
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    • 1988
  • 솔잎혹파리(Thecodiplosis japonensis Uchida et Inouye) 성충을 재료로 하여 그 생식절을 주사전자현미경으로 관찰하였다. 웅성 : 배측에서 보면 두쌍의 hypoproct가 있고 그 양쪽에는 한쌍의 claspettes가 있다. 각 부분의 표면은 주로 seta와 sensilla로 덮혀 있다. 특히 gonostylus 상단부에는 특이한 구조가 관찰되었다. 또한 aedeagus가 관찰되었는데 그 끝부분에는 매우 특이한 구조가 나타났다. 자성: Ovipositor는 세개의 마디로 되어 이들 각 마디의 표면구조는 서로 뚜렷한 차이를 보여주었다.

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Artotrogus gordoni n. sp. (Copepoda: Siphonostomatoida: Artotrogidae) Assocaited with the Bryozoan Schizosmittina cinctipora (Hincks) from New Zealand

  • Kim, Il-Hoi
    • Animal Systematics, Evolution and Diversity
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    • 제25권1호
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    • pp.5-9
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    • 2009
  • Artotrogus gordoni n. sp. is described as an associate of the bryzoan Schizosmittina cinctipora (Hincks, 1885) collected from an intertidal shore in New Zealand. The new species is similar to A. sardae McKinnon but distinguishable from it by the different shapes of antennule where the first segment is the longest and urosome where the anal somite is distinctly narrower than the genital double somite and posterolateral processes on the genital double somite which is tapered and much more developed than in A. sardae.

Three New Species of Kelleria (Copepoda: Poecilostomatoida: Kelleriidae) from Korea

  • Kim, Il-Hoi
    • Animal Systematics, Evolution and Diversity
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    • 제22권1호
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    • pp.1-11
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    • 2006
  • Three new species of Kelleria are described based on the females from the invertebrate burrows in the Port Seogwipo, Jeju Island, Korea. These species possess in common no process on the inner margin of the free segment of leg 5. Kelleria grandisetiger n. sp. possesses a large seta on lateral sides of the genital double-somite and a small thumb-like process near base of the free segment of leg 5. Kelleria undecidentata n. sp. possesses the elongated free segment of leg 5 which is more than four times as long as wide and 11 teeth on the distal margin of the second maxillary segment. Kelleria portiviva n. sp. possesses one seta and one distinct spine on the distal margin of the free segment of leg 5, ten or 11 teeth on the distal margin of the second maxillary segment, and a tuft of spinules on the convex outer comer of mandible.

Structure of Female Genitalia in the Korean Wood-Feeding Cockroach, Kyebangensis

  • Park, Yung-Chul;Choe, Jae-Chun
    • Animal cells and systems
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    • 제6권1호
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    • pp.65-68
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    • 2002
  • Female genital morphology of Cryptocercus Kyebangensis is described, focusing on the structural features of ovipositors at each developmental stage. Ovipositor valves were the first genital structures to appear in female nymphs. The caudal margin of the 9th sternum was nearly straight in the 1st instars of both sexes, with a slight median notch, but was deeply concave in the female nymphs of the End instar. The 1st valve of ovipositor budded off from membranous fold between the 8th 8nd 9th sternum and a pair of the 2nd valve came from the 9th sternum. Separation of styli occurred in the female nymphs of the 8th or 9th instar. Some parts of the female genitalia were sclerotized after the final molt. Spermathecae were the fork type and leaned a little to the right in the middle line of the genital chamber from ventro-posterior view. The trace sealed with sclerite materials existed on the spermathecal opening. The genital segments (segments Ⅷ, IX, and X) were concealed completely by the 7th tergum and sternum posteriorly expanded. Terminal lobes which exist in the Blattidae were not observed in C. Kyebangensis. Instead, the apicolateral emargination existed on the terminal abdominal segment of C. Kyebangensis females.

A Review on the Microstructures and Taxonomy of the Acartia bifilosa (Crustacea: Copepoda) in Kyeonggi Bay, Yellow Sea

  • Shim, Moon-Bo;Choi, Joong-Ki
    • Journal of the korean society of oceanography
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    • 제31권1호
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    • pp.37-42
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    • 1996
  • Acartia bifilosa has been classified as Rostratae group of Acartia by the characteristic of having the rostral filament. However, we have found that A. bifilosa does not have any rostrum. Therefore, A. bifilosa should be classified as Arostratae group. For the first time, we have observed that this species has only one genital pore in the genital segment. Two spermathecal canals are looped in lateral view as well as ventral view. We have also observed two thin, very short filaments and minute apertures on the anterio-ventral part of the top of the head. The function of the filaments need to be investigated.

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Three New Species of Hemicyclops (Copepoda, Cyclopoida, Clausidiidae) from Korea

  • Moon, Seong-Yong;Kim, Il-Hoi
    • Animal Systematics, Evolution and Diversity
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    • 제26권3호
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    • pp.279-293
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    • 2010
  • Three new species of Hemicyclops, H. parilis, H. nasutus and H. membranatus are described from Korean coasts. Hemicyclops parilis n. sp. is closely similar to H. gomsoensis Ho and Kim, but distinguishable from the latter species by having the different shape of genital double somite and spermatophore. Hemicyclops nasutus n. sp. is distinguishable from congeners by having five setae on the first segment of antennule and the ratio 4.26 : 1 of the length to width of caudal ramus. Hemicyclops membranatus n. sp. is characterized by the possession of the membranous fringe along margins of cephalothorax and a claw on the third antennal segment.

First record of Heterorhabdus papilliger(Calanoida, Heterorhabdidae) from Korean waters based on morphological and molecular features

  • Lee, Seok Ju;Jeong, Man-Ki;Seo, Min Ho;Choi, Jang Han;Soh, Ho Young
    • Journal of Species Research
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    • 제10권1호
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    • pp.78-85
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    • 2021
  • Heterorhabdus papilliger (Claus, 1863) is newly reported from the Tsushima Warm Current realm of the southern Korean waters. Its morphological diagnostic characteristics generally agreed well with the original description and the previous records of H. papilliger. The female of H. papilliger can be recognized by the genital somite, which in lateral view has a more or less rounded genital prominence and an uninflated posterior ventral margin; the second exopodal segment of male right leg 5 with the medial projection with a large, rounded, plumose proximal lobe, and a poorly developed distal lobe. The genetic difference for the partial mtCOI gene between Korean specimens and H. papilliger from Spain and Japan of the same clade is 0.4%, while the difference between Korean specimens is 0.5%. However, the interspecific difference for the mtCOI gene between H. papilliger from the Korean waters and the other Heterorhabdus species is in the range of 14.7-20.8%, suggesting that the former is a valid species.

한국 연안의 요각류 중 Acartia clausi로 분류되어지고 있는 종에 대한 재검정 및 분포에 대한 연구 (Taxonomic Re-examination and Distribution of Copepods known as Acartia clausi in the coastal waters of Korea)

  • 강영실;이삼석
    • 한국수산과학회지
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    • 제23권5호
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    • pp.378-384
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    • 1990
  • 한국 연안에서 보고되고 있는 Acartia clausi를 부산 연안역에서 채집된 종으로써 재검정하였다. 그 결과 지금까지 A. clausi로 분류되어졌던 종이 Acartia omorii이거나 A. hudsonica임이 밝혀졌다. 수컷의 경우, 제5각 오른쪽 세번째 마디절 내측에 있는 융기부의 형태에서 두종간의 뚜렷한 차이를 찾을 수 있다 A. omorii는 융기부의 아랫부분이 만곡되어 있으며, A. hudsonica는 원형으로 돌출되어 있다. 암컷의 경우, 생식절의 폭에 대한 길이의 비가 두 종간 중요한 분류 형질이 된다. 또한, A. omorii와 경우, 후제부의 두번째 마디절 등쪽 끝에 $1\~3$개의 소극을 가진 것이 특징이다. 한국 연안 8개의 지점에서 분포를 파악해 본 결과 A. omorii는 모든 조사지점에서 출현하였고, A. hudsenica는 부산 연안역에서만 출현하였다.

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청색증형 선천성 심질환아의 고식적 수술 이후 EBT에 의한 폐혈관계이 비침습적 추적 검사 (Non-invasive Fdlow-up of Pulmonary artey by EBT Other Palliatrve Shunt Operatin)

  • 김민정;박영환;홍유선;이종균;최규옥;조범구
    • Journal of Chest Surgery
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    • 제33권1호
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    • pp.7-19
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    • 2000
  • Background :To assess the accuracy of Electron-Beam Tomography(EBT) in following evaluation of the pulmonary vascular system after a shunt operation in the cyanotic con-genital heart disease with pulmonary stenosis or pulmonary atresia. Material and Method : Sixteen patients(M:F=11:5) who received Blalock-Taussig(n=8) bidirectional cavo-pulmonary shunt(n=10) and unifocalization (n=2) were ncluded in the study. We evaluated the patency of the shunt the morphology of intrapericardial and hilar pulmonary arteries(PA) peripheral pulmonary vascularity by background lung attenuation and the abundance of arterial & venous collateral. Angiography(n=12) and echocardiography(n=20) were used as the gold standard for the comparison of EBT results. Result: EBT was consistent with angiogram/ echo in 100% of the evaluation for the patency of the shunt and in 12(by angiogram 100%) and 19(by echo 95%) for the detection the hypoplasia stenosis or interruption of central PA In measuring of PA EBT and angiogram corrlated(r=0.91) better than EBT-echo(r=0.88) or echo-angiogram(r=0.72) Abundant systemic arterial collateral were noted in 4 and venous collateral in 3 cases. In evaluating the peripheral pulmonary vascularity the homogenous and normal-ranged lung attenuation(m=6) decreased but homo-genous attenuation(n=1) segment-by-sgment heterogeneous attenuation(n=3) homogenous but asymmetrical attenuation(n=3) segment-by-segment heterogeneous attenuation(n=3) homogenous but asymmetrical attenuation(n=3) and venous congestion(n=2) were observed nd 12 of them were compatible with the blood flow pattern revealed by cardiac catheterization. Conclusion: EBT was accurate in the integrated evaluation of the pulmonary vascular system after the shunt including the patency of the shunt operaion the morphology and dimension of the central and hilar PAs and the loco-regional pulmonary flow in the lung parenchyma. It suggests the useful information about the need of secondary shunt operation the proper timing time for total repair and the need of interventional procedure prior to total repair.

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Lobohalacarus weberi (Acari, Halacaridae) from Shallow Ground Waters in South Korea

  • Shin, Jong Hak;Lee, Jimin;Chang, Cheon Young
    • Animal Systematics, Evolution and Diversity
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    • 제37권3호
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    • pp.242-248
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    • 2021
  • Lobohalacarus weberi (Romijn and Viets, 1924) is added to the halacarid fauna of Korea as the third member of freshwater halacarid species. Both the genus and species are newly recorded from Korea. Halacarid mites were collected from two hillside wells and a streamside hyporheic zone in the southeastern region of South Korea. Lobohalacarus weberi is characterized by a well-developed frontal spine-like process, seven dorsal setae, the fourth segment of palp with a short distal and three long proximal setae, and tibiae of legs II to IV with two, one, two pectinate setae, respectively. A few minor individual variabilities were observed in the number of perigenital seta and genital acetabula, the setal armature on genua of legs, and the shape of spinule row on lateral claws.