• 한국양식학회지
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• 제19권4호
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• pp.236-241
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• 2006

남해안에 서식하는 왕우럭의 공생성 요각류 3종의 감염률에 대한 계절 변동을 연구하였다. 계절에 따라서 감염률과 출현량의 차이를 보였으며, 겨울철에 높게 출현하였다. 요각류의 출현 양상에 따른 생산력은 성숙한 요각류의 비율이 높아지면서 초가을과 봄에 높게 나타났다. 공생성 요각류 3종의 출현 빈도는 숙주의 개체군이 성장할 수 있는 서식 조건에 따른 적합한 환경이 되어야 높아지는 것으로 나타났다. 공생성 요각류의 계절에 따른 감염률, 상대 감염강도, 평균 감염밀도는 수온과 그들의 생활사에 기인한 것으로 판단된다.

• Animal Systematics, Evolution and Diversity
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• 제38권4호
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• pp.167-198
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• 2022

Ten species of copepods, including nine new species, associated with compound ascidians are recorded from Korean waters. Nine new species can be characterized by their major diagnostic features, as follows: Botryllophilus pentamerus n. sp. by having a five-annulated abdomen; B. paucisetatus n. sp. by the presence of four and three setae on the exopods of right and left leg 1, respectively; Haplostoma quadridens n. sp. by the presence of four lobes on the labrum and one seta plus four spines on the exopods of legs 1-4; H. paucidens n. sp. by the presence of only two spines on the distal segment of the antenna; Enterocola horridus n. sp. by having five setae on the antenna, no seta on the caudal ramus, and two setae on leg 5; E. longicaudatus n. sp. by having long caudal rami which are more than three times as long as wide; Thoracodelphys bisetata n. sp. by the presence of only two setae on the basis of the maxillule; T. cerasta n. sp. by the presence of a large, horn-like process on the distal margin of the basis of leg 2; and Unimeria hirsuta n. sp. by having three setae on the terminal segment of the maxilla. Zygomolgus didemni (Gotto, 1956) previously known only from European waters is reported from Korean waters, with a redescription and illustrations.

• Journal of Species Research
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• 제13권2호
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• pp.185-254
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• 2024

Sixteen species of Asterocheres collected from the southern and eastern coasts of Korea are recorded. Two species are redescriptions-Asterocheres aesthetes Ho, 1984 and A. siphonatus Giesbrecht, 1897. The remaining 14 new species described are A. geminus n. sp., A. processus n. sp., A. culicis n. sp., A. eurychelatus n. sp., A. scutellatus n. sp., A. spiniventer n. sp., A. fici n. sp., A. serratus n. sp., A. tridentatus n. sp., A. nodulosus n. sp., A. tetraodontis n. sp., A. dokdoicus n. sp., A. exilis n. sp., and A. zodius n. sp. These new species are compared with other known species of the genus mainly based on the character states of 17 selected characters. These characters include the length/width ratios of the caudal ramus and genital double-somite, the number of postgenital lateral setules or spinules on the genital double-somite of the female, the number of segments of the antennule of both sexes, the position of aesthetasc on antennular segments in the female, the relative length of terminal claw of the antenna, the relative length of the oral siphon, the number of segments and the relative length of the mandibular palp, the presence or absence of inner coxal seta on legs 1 and 4, the relative lengths of setae on the exopod of female leg 5, the presence or absence of sexual dimorphisms of swimming legs, and the presence or absence of a secondary aesthetasc on the male antennule. A key to 22 species of Asterocheres known in Korea waters is provided.

• Animal Systematics, Evolution and Diversity
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• 제40권3호
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• pp.221-253
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• 2024

Eight new species of the genus Acanthomolgus are described as external associates of octocorallian corals from Korea. As diagnostic features of these new species, A. taenichaetatus n. sp. has ribbon-like distal caudal setae; A. jei n. sp. and A. crassae n. sp. have no inner proximal expansion on the exopodal segment of female leg 5, and the former species has only three setae on the maxillule (vs. four setae in other seven species). Acanthomolgus notialis n. sp. is similar to A. oporinus n. sp. in having a rounded inner proximal expansion on the exopodal segment of female leg 5, but the latter species is distinguished from the former by having longer caudal rami which are about 1.5 times longer than wide, by having a longer inner seta of the maxilla which is three quarters as long as distal lash, and by having unequal setae on the basis of maxilliped. Acanthomolgus dokdoicus n. sp., A. rugosus n. sp. and A. triplus n. sp. appear to be similar to one another in having an ear-like inner proximal expansion on the exopodal segment of female leg 5, but the genital double-somite of the female is distinctly longer than wide in A. rugosus n. sp. (wider than long in other two species), and the third endopodal segment of the antenna is distinctly shorter than the first endopodal segment in A. triplus n. sp. (vice versa in other two species). This is the first record on the genus Acanthomolgus in the temperate West Pacific.

• Ocean and Polar Research
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• 제36권2호
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• pp.121-134
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• 2014

이 연구에서는 조직학적 방법을 이용하여 산란 기간 중, 지중해담치의 조직학적 변화를 관찰하였다. 조직학적 관찰 결과, 마산만 지중해담치(M. edulis galloprovincialis)는 4월부터 산란을 시작하여 9월까지 산란이 지속되는 것을 관찰할 수 있었으며, 동일 시기에 비만도도 감소하는 것을 확인할 수 있었다. 소화맹낭 위축도는 산란 스트레스를 받는 6월($3.24{\pm}1.16$)과 수온이 높은 9월($3.33{\pm}1.19$)에 높은 위축도 지수를 보였다. 또한 이 시기(9월)에는 높은 소화맹낭 조직붕괴 현상도 동반되는 것을 관찰할 수 있었다. 병리학적 증상 관찰 결과, 종양증 또한 관찰되었으나, 그 발병률은 5% 미만으로 낮게 나타났다. 마산만의 지중해담치에서는 기생성 병원체는 관찰되지 않았으나, 공생요각류가 관찰되었다. 이 연구에 쓰인 조직병리학적 분석기법은 향후 담치의 건강도 및 연안 환경변화가 주변 생물에게 미치는 영향을 평가하는데 있어 유용하게 활용될 것으로 예측되었다.