• Korean Journal of Fisheries and Aquatic Sciences
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• v.6 no.1_2
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• pp.81-84
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• 1973

Nectoneanthes latipoda is reported new to science as a new species, and added new to Korean fauna.

• The Korean Journal of Zoology
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• v.13 no.4
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• pp.101-111
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• 1970

저자들은 1970년 8월에 채집된 거제도산 지렁이 총 251 개체를 정리한 결과 다음 2과 2속 9종을 얻었다. Pheretima acincta, Ph. agrestis, Ph. geojeinsulae n. sp., Ph. gucheonensis n. sp., Ph. heteropoda, Ph. hilgendorfi, Ph. koreana and Ph. soulensis; Allolobophora caliginosa trapezoides. 거제도의 지렁이에 관해서는 지금까지 보고된 바 없으므로 이들은 전부 거제도 미기록종이되며 이들 중에는 한국 미기리록종 Ph. acincta(Goto et Hatai, 1899)와 두개의 신종, Ph. geojeinsulae, Ph. gucheonensis를 포함하고 있다. Ph. geojeinsulae는 체장 185-210mm, 체폭 10-12mm, 체절수 125-136개, spermathecal pore는 2雙으로서 5/6 및 6/7에 있다. 본 종은 spermathecal pore region과 male pore region의 모양으로 이 속의 다른 종과는 뚜렷이 구별된다. 또 Ph. gucheonensis는 일본산의 Ph. tappensis Ohfuchi, 1935와 비슷하나 체장이 짧으며 (70:100), 특히 내부의 spermatheca의 모양이 전혀 다를 뿐 아니라 10/11, 11/12의 septa가 있는 점으로 뚜렷이 구별된다.

• The Korean Journal of Zoology
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• v.13 no.1
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• pp.9-14
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• 1970

제주도산 육서 빈모류의 분류학적 연구는 Kobayashi, S. (小林新二郞)에 依하여 1937년에 Drawida anchingiana, Pheretima kanrazana, Ph. masatakae, Ph. quelparta 등의 4종이 보고 되었고, 다시 1938년에 Dr. japonica, Ph. carnosa, Ph. hupeiensis가 보고 되었을 뿐이다. 저자들은 1966년 및 1969년에 채집된 제주도산 지렁이 총 1045개체를 정리한 결과 다음 2과 2속 11종을 얻었기에 이에 보고 하는 바이다. 제주도 기지종 : Pheretima carnosa, Ph. hupeiensis, Ph. kanrazana, Ph. masatakae, Ph. quelparta. 제주도 미기록종 : Allolobophora caliginosa trapezoides, Ph. agrestsi, Ph. heteropoda. Ph. phaselus var. kamitai, Ph. soulensis. 신종 : Ph. seungpanesis n. sp. 신종 pheretima seungpanensis의 체장은 $105 \\sim 120mm$, 체폭은 $5 \\sim 6mm$, 체절수는 $78 \\sim 98$개 spermathecal pore는 2쌍으로서 첫째쌍은 VI체절의 setal line 뒷쪽에서 이 선과 인접해 있으며 두째쌍은 setal line의 앞쪽에 intersegmental furrow에 가까운 부분에서 개구한다. 본종은 spermathecal pore의 위치가 이속의 다른 종에서 보는것 처럼 intersegmental furrow에 개구하지 않는점이 특별하다. 그 뿐 아니라 male pore region의 모양에 있어서도 모든 기지종과 뚜렷이 구별된다.

• Parasites, Hosts and Diseases
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• v.28 no.4
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• pp.235-240
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• 1990

During an investigation on intestinal flukes of house rats in Yangyang-gun, Kangwon-do, a total of 6 species of trematodes belonging to 3 families; Echinostom-atidae (Echinostoma hortense, E. cinetorchis, E. revolutum and Echinoparyphium recurvatum), Diplostomidae (Fibricoza seoulensis) and Plagiorchiidae (Plagiorchis muris), were recovered from two adult rats. E. revolutum and E. recurvatum were new trematode faunae of rats in Korea. 5. revolutum had an elongated body, 5.3∼6.Omm long and 1.0∼1.3mm wide. The total number of collar spines was 35∼37 including 5 end group ones on each ventral corner. Its coiled uterus contained numerous eggs.5. recurvatum also had an elongated body, 3.5∼4.7 mm long and 0.50∼0.65 mm wide. It had total 45 collar spines including 4 end group ones. The uterus toras short with only a few eggs. It has been first confirmed by this study that E. revolutum and E. recurvatum are indigenously distributed among house rats in Korea. Kef lords: Echinostoma revolutum, Echinoparyphium recurvatum. new fauna. house rats, Yangyang-gun ( Kangwon-do )

• Parasites, Hosts and Diseases
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• v.27 no.3
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• pp.217-224
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• 1989

Four females and a male nematode isolated from 2 patients who visited eye clinics In Seoul were identified as Thelazia callipaeda and their ultrastructures were observed by scanning electron microscopy(SEM). General features of the worms were slender and attenuated at both ends. Vaginal opening was located at 0.27 mm from the anterior end, and in front of the esophagointestinal junction. In the body cuticle transverse striations varied characteristically through the body. The number of cuticular transverse striations was 400∼650/mm at head portion, 250/mm at middle portion and 300∼350/mm at tail portion. The SEM observation of the mouth part of the females showed 6 cord-like cuticular thickenings in hexagonal arrangement and an amphid was observed. A lateral line, a vaginal opening, a pair of phasmids, and an anus were identified in the body portion. A pair of papillae and 6 cord-like cuticular thickenings were on the mouth part of the male. It was difficult to observe structures at the tail of the male except wrinkle-like structures. Most of the larvae isolated from the uterus of a female worm were sheathed and thus cuticular striations were not Eren. Others were unsheathed and revealed cuticular striations. The oval membrane which encysted sheathed larvae was also observed. These are the 18th and 19th record of human thelaziasis in Korea as the literature are concerned.

• Journal of Sericultural and Entomological Science
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• v.18 no.2
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• pp.65-78
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• 1976

The mulberry small weevil, Baris deplanata ROELOFS, has highly infested mulberry trees in Korea. As the damage caused by the mulberry small weevil in mulberry fields has been increased over the country since 1969, the authors has carried out a series of biological and controlling studies on the pest from 1971 to 1972. The results obtained are summarized as follows. 1. The adult weevil is elongate oval in shape with black in color and the probocis is long as usual in curculionidae. The size of adult female is 3.30${\pm}$0.04mm in length, 1.47${\pm}$0.04mm in width, and the length of proboscis is 1.25${\pm}$0.014mm, while adult male is 3.28${\pm}$0.06mm in length, 1.40${\pm}$0.04mm in width, and the length of proboscis is 1.30${\pm}$0.02mm. The antenna is geniculate consisting of 12 segments. The terminal sternite of the abdomen has a pointed tip in male but not in female. 2. The egg is long oval in shape, milky white in color, 0.51${\pm}$0.05mm in length and 0.32${\pm}$0.02mm in width. 3. The mature larva is cylindrical and light yellowow in color except the head of dark brown, and legless, 3.88${\pm}$0.06mm in length, 1.40${\pm}$0.02mm width, each segment bearing many wrinkless and short setae. 4. The pupa is long oval, milky white and exarate, 3.53${\pm}$0.09 in length, 1.40${\pm}$0.03mm in width. 5. Majority of the species has one generation through a year and overwinters as adult in xylem of withered branch and come out again from late April to early May in next year. But some of the female oviposit in the same year and the offsprings overwinter as larva (0.4%) or pupa (0.1%) 6. The eggs are mostly laid under the cork layer of withered branch and the number of eggs deposited by an adult female is 73.44${\pm}$8.74, the average egg-laying period is 33.88${\pm}$6.04 days. The incubation period is 11.69${\pm}$0.39 days, the larval period 45.04${\pm}$1.63 and the pupal period 11.05${\pm}$0.49 days. The period of adult's activity is 46.7${\pm}$5.90 days. 7. The larvae feed on the cambium under the bark and adults feed on the winter bud, the latent bud, the leaf stalk and the base of newly shoot. 8. An active period of adults was observed during the period of 4 months from April to July. However, the peak of adult-density occurred in the early May (in the fields of spring-prunning) and early to middle June(in the fields of summer-prunning). 9. There is a positive correlation between the density of larvae and diameter and length of the branches. 10. The pattern of distributions of the adult of mulberry small weevil is negative binomial distribution. 11. The chalcid fly was disclosed to be a natural enemy which was parasite on the larvae of mulberry small weevil and its parasitic ratio was 11.9%. 12. Phosvel D, Malix D, Salithion EC, DDVP EC, and Phosvel EC were effective for the control of adults and Satchukoto-S EC, and Salithio EC were effective for the control of larvae.

• Parasites, Hosts and Diseases
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• v.24 no.1
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• pp.71-76
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• 1986

Eggs of Echinestoma sp. were found from two patients who were hospitalized between Oct. and Dec. 1985. Single dose of 10 mg/kg of praziquantel was prescribed to each patient and after purgation with magnesium salt seuen and two adult worms of Echinostoma cinetorchis in respect were recovered from patients. The first case was a 54-year-old male residing at Chungju City in Chungbuk Province. He was hospitalized because of severe weight loss and frequent urination. The second case was a 71-year-old male residing at Chungsun-Kun in Kangwon Province, and hospitalized due to suspected lung cancer. The average size of the eggs found in the stools was $98{\times}63{\mu}m$ (the first case) and $100{\times}67{\mu\textrm{m}}$ (the second case) respectively, and total nine worms collected were identified as E. cinetorchis.

• Journal of Aquaculture
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• v.1 no.1
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• pp.75-84
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• 1988

For studying growth of sea squirt, Halocynthia roretzi, from laboratoy grown seeds, in situ culture experiment was carried out off Hansando located in the southern part of Korea from February 1984 to July 1986. In the growth of the mean body height, sea squirt grew up to 9.15 cm during the above period after they were seeded at about 0.05 cm. The meat weight of 1.27 g at the beginning increased to 41.69 g from February 1985 to March 1986. The decreasing tendency in body height, body breadth, total weight and meat weight of sea squirt was observed during the summer season in 1985 when the water temperature reached $23.53^{\circ}C$ the maximum value in monthly mean, and the specific gravity of sea water remained at the lowest level of 1.0233 in monthly mean. Sea squirt became gradually elongated with the decreasing tendency in the relative growth ratio of body breadth to body height with aging. The monthly mortality of sea squirt was especially higher in June and July than in the other months, and the average monthly mortality was $10.83\%$.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.5 no.3
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• pp.233-237
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• 2000

The complete postembryonic development of nauplius stages of Paramphiascella vararensis T. Scotf (Copepoda: Harpacticoida) is described and illustrated based on specimens cultured in laboratory. The nauplii of P. vararensis feed on powder of a green algae, Ulva perusa. This species is metamorphosed to the stages of nauplius. Development from the nauplius stage to the nauplius stage take about 12 days under culture conditions of 33-34 ppt of salinity, 22-23$^{\circ}$C of temperature and feed on the algal powder. In the nauplius stages of P. vararensis, the rudiment of maxillule appeares at the third nauplius stage, and maxilla appeares at the fifth nauplius stage.

• Parasites, Hosts and Diseases
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• v.26 no.1
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• pp.9-14
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• 1988

In an attempt to determine the susceptibility of inbred golden hamsters(Mesocricetus auratus) to the experimental infection with Clonorchis sinensis, twenty-five hamsters were divided into 5 groups and administered orally 5, 10, 20, 30 or 50 metacercariae each. The hamsters were killed on the 45th day after infection. The adult flukes were recovered from all hamsters. The overall recovery rate for the fluke was 57.9% with the range of 48.4% to 92.0%. As the number of the metacercariae given increased, a porportionate decrease in the recovery rate was found, the prepatent period of the fluke in the hamster varied from 15 to 17 days, with the average of 16 days. No significant differences in the development of the flukes were observed. Egg production expressed by EPG, increased step by step as the time elapsed. However, a tendency of decreasing egg laying capacity was observed with the increase of worm burden. It is suggested that the hamster is a suitable final host of C. sinensis.