• 제목/요약/키워드: operculum

검색결과 45건 처리시간 0.024초

한국산 망둑어과 어류 1 미기록종 Istigobius hoshinonis (A New Record of the Gobiid Fish Istigobius hoshinonis from Korea)

  • 이용주
    • Animal Systematics, Evolution and Diversity
    • /
    • 제7권1호
    • /
    • pp.39-44
    • /
    • 1991
  • 1986년 8월 2일 제주도 한림읍에서 채집한 망둑어과 어류 1개체가 한국 미기록종인 Istigobius hoshinonis로 동정되었기에 이를 기재하였다. 본 종은 가슴지 느러미에 유리전조가 없고 둥지느러미전방 비늘이 12개 이상, 횡렬린수가 7-9개, 뺨과 새개부에 비늘이 없는점 등에서 동일속의 다른 종들과 잘 구분된다. 본 종의 한국명은 '비단망둑'이라 명명한다.

  • PDF

양식 조피볼락에서의 Benededia derzhavini 기생에 관한 국내 보고 (Benedenia derzhavini (Trematoda : Monogenea) from Cultured Korean Rockfish, Sebastes schlegeli, in Korea)

  • 김기홍;권세련
    • 한국어병학회지
    • /
    • 제11권1호
    • /
    • pp.83-86
    • /
    • 1998
  • Benedeniidae과에 속하는 단생흡충류인 Benededia derzhavini(Layman, 1930) Meserve, 1938가 양식 조피볼락의 아가미와 아가미 뚜껑 내벽에 기생하고 있음을 국내에서 처음으로 보고하며, 아울러 이 종의 형태학적 특징을 자세히 기술하였다. B. derzhayini는 B. seriolae 및 B. sebastodis 등의 종들과 accessory sclerite와 hamuli의 형태 및 상대적인 길이 비율 차이에 의해서 구별되었다.

  • PDF

Bithyniidae과 (중복족목) 패류 8종의 패각과 뚜껑의 형태 관찰 (Morphological Observations on Shells and Operculums of Eight Bithyniids)

  • 김재진
    • 한국패류학회지
    • /
    • 제5권1호
    • /
    • pp.42-56
    • /
    • 1989
  • Shells and operculums of eight species of Bithyniidae, Bithynia leachi, B. tentaculata, B. siamensis, B. misella, B. kiusiuensis, Gabbia australis, B. manchourica and a Bithynia sp. collected from Nepal, were observed, There is no morphological difference between korean populations of B. misella and a Japanese popualtion of B. kiusiuensis. And the shells of these species were simialr to the other Bithynia species rather than Australian Gabbia. The coordinate of the starting point of nuclear spire of operculum(SPN)was species specific and this value had very limited range within a species. The result suggested that Korean and Japanese populations of B. misella and B. kiusiuensis are synonym and the coordinate of SPN will be a useful character in sytematics of operculated snails.

  • PDF

Microphysogobio rapidus, a New Species of Gudgeon (Cyprinidae, Pisces) from Korea, with Revised Key to Species of the Genus Microphysogobio of Korea

  • Byung-Soo Chae;Hong-Jun Yang
    • Animal cells and systems
    • /
    • 제3권1호
    • /
    • pp.17-21
    • /
    • 1999
  • A new species of gudgeon, Microphysogobio rapidus is described from 25 specimens collected from the Naktong River system, Korea. The new species is similar to Microphysogobio yaluensis but is distinguished from the latter and congeners by the combination of the following characteristics: number of papilla on the upper lip, 4.5 scales above the lateral line, short distance from the anus to the origin of the anal fin, wide scaleless area of the abdomen, nuptial colour consisting of a longitudinal green stripe on the lateral side of the body and bright blue colour of the suborbital region and operculum. A key to the species of Microphysogobio from Korea is also included.

  • PDF

떡납줄갱이(Rhodeus notatus)의 Transparent-Scaled Variant Type 출현 보고 (Manifestation of Transparent-Scaled Variant Type in Rhodeus notatus)

  • 박재민;조성장;사공진;유정남
    • 한국수산과학회지
    • /
    • 제55권3호
    • /
    • pp.338-344
    • /
    • 2022
  • This study evaluated the external form of Rhodeus notatus TSV (transparent-scaled variant) type identified in Korea for the first time and compared it with that of the normal type. The TSV units newly found on Rhodeus notatus are iii10 of dorsal fin and anal fin iii10, which are similar to that in the normal type, considering the observing coefficient of each part's fins. The external form is, transparent enough to see the red gill filament in the operculum, the spiral digestive organ is observed opaquely, and numerous melanophores are stained at the upper part of abdomen. The coloration and scales are different between TSV type and normal type; however, there is no difference in the external form and meristic character.

수온변화에 따른 무지개송어(Oncorhynchus mykiss)의 산소소비, 아가미 호흡수 및 헤모글로빈 변화 (Variation of Oxygen Consumption, Operculum Movement Number and Hemoglobin by Water Temperature Change in Rainbow Trout Oncorhynchus mykiss)

  • 소상영;허준욱;이정열
    • 한국어류학회지
    • /
    • 제20권4호
    • /
    • pp.239-247
    • /
    • 2008
  • 무지개송어(체장 $17.1{\pm}1.0cm$, 체중 $68.4{\pm}2.0g$)의 수온변화에 따른 생리적 반응의 단기적 지표로서 산소소비율, 호흡수, 헤모글로빈 함량 변화 및 내성 상한 온도를 조사하였다. 실험 수온은 $15^{\circ}C$를 중심으로 낮은 온도 쪽으로는 4, 5, 6, 7 및 $10^{\circ}C$, 높은 온도 쪽으로는 17, 20, 23, 26 및 $28^{\circ}C$에서 각각 적응시켜 산소소비량과 호흡수를 측정하였다. 수온의 하강과 상승은 $15^{\circ}C$에서 사육하던 무지개 송어를 1일 $1^{\circ}C$씩 순차 적응시키면서 각 수온에 7일간 적응시켰다. 무지개송어는 수온이 $23^{\circ}C$ 이상이 되면 산소소비율, 호흡수 및 헤모글로빈 함량에 변화를 가져오면서 체내 항상성이 급격하게 낮아지는 것으로 나타났다. 또한 생존 상한수온은 $28^{\circ}C$로 나타났다. 무지개송어가 무리없이 생활할 수있는 온도 범위는 $10{\sim}20^{\circ}C$로서 $10{\sim}15^{\circ}C$의 낮은 온도에서는 낮은 온도쪽으로, $15{\sim}20^{\circ}C$의 높은 온도에서는 높은 온도쪽으로 $5^{\circ}C$ 이상 급격한 변화를 주지 않는 것이 무지개송어의 생리활력에 현저한 변화가 나타나지 않는 것으로 조사되었다.

Effects of Water Temperature Change on the Hematological Responses and Plasma Cortisol Levels in Growing of Red Spotted Grouper, Epinephelus akaara

  • Cho, Hyun Chul;Kim, Ji Eun;Kim, Hyung Bae;Baek, Hea Ja
    • 한국발생생물학회지:발생과생식
    • /
    • 제19권1호
    • /
    • pp.19-24
    • /
    • 2015
  • This study was conducted to determine the stress response [ethological (operculum movement number (OMN)), hematological (hematocrit and hemoglobin), biochemical (glucose, cortisol and glutamic oxaloacetic transaminase (GOT))] in red spotted grouper, Epinephelus akaara during exposure of different water temperature in winter season. This species (Total length, $18.56{\pm}0.34cm$) previously maintained in water temperature of $15^{\circ}C$ were transferred to 15, 20 and $25^{\circ}C$. During experimental period (7 days), OMN, hematocrit (Ht), glucose and GOT values were significantly high in $15^{\circ}C$ when compared to 20 and $25^{\circ}C$. Hemoglobin value was also increased at $15^{\circ}C$, but no significant differences. There was no differences in cortisol levels among the temperature groups. No fish mortality was observed during the experimental period. From these results, $15^{\circ}C$ is likely more stressful to red spotted grouper than $20^{\circ}C$ and $25^{\circ}C$. These observations confirm that red spotted grouper adapts better to temperatures between 20 and $25^{\circ}C$ during the winter season.

A New Record of Juvenile Chromis mirationis (Perciformes: Pomacentridae) from Korea, Revealed by Molecular Analysis, with a Comparison to Juvenile Chromis notata

  • Song, Young Sun;Kwun, Hyuck Joon;Kim, Jin-Koo;Senou, Hiroshi
    • Fisheries and Aquatic Sciences
    • /
    • 제17권2호
    • /
    • pp.263-267
    • /
    • 2014
  • A single juvenile pomacentrid specimen (5.9 mm standard length) was collected from the Korea Strait in October 2010. The specimen is characterized by punctate-stellate melanophores scattered on the operculum and dorso-ventral region in front of the caudal peduncle, the lack of melanophores on the posterior end of the anal fin base, the presence of 14 spines and 14 soft rays on the dorsal fin, and the presence of 2 spines and 12 soft rays on the anal fin. A molecular analysis based on mitochondrial DNA 16S rRNA sequences showed that this specimen is closely related to adult Chromis mirationis (d = 0.002), but that it differs from Chromis notata (d = 0.017). Juvenile C. mirationis differ from juvenile C. notata in having no melanophores on the posterior end of the anal fin base. We propose a new Korean name, "tti-ja-ri-dom" for C. mirationis.

A New Species of the Genus Bryocamptus (Copepoda, Harpacticoida, Canthocamptidae) from Alpine Wetlands at Jeju Island, Korea

  • Lee, Jimin;Chang, Cheon Young
    • Animal Systematics, Evolution and Diversity
    • /
    • 제32권3호
    • /
    • pp.219-229
    • /
    • 2016
  • Material of a Bryocamptus species, formerly reported as B. umiatensis Wilson, 1958 from Sakhalin and South Korea, is here recognized as a distinct new species. Specimens of both sexes were recently obtained from an alpine wetland, Sumeunmulbaengdui, located in the Hallasan National Park, Korea, and newly registered as a Ramsar Wetland in 2015. The new species, B. jejuensis n. sp., differs from the type population of B. umiatensis from Alaska by the smooth margin of the anal operculum in both sexes, the peculiarly modified terminal seta on the distal endopodal segment of the male leg 3, the sword-like spinous seta on the distal endopodal segment of the male leg 4, and the presence of a setule row on the inner distal margin of the caudal rami in the female. Both sexes of the new species are described in detail with particular reference to the male characters. A revised key to the seven species of the genus Bryocamptus Chappuis, 1929 occurring in Korean waters is provided.

한국산 꽃동멸속 어류 1 미기록종, Synodus fuscus Tanaka (First Record of the Lizardfishes, Synodus fuscus (Synodontidae, Aulopiformes) from Korea)

  • 최윤
    • 한국어류학회지
    • /
    • 제24권4호
    • /
    • pp.311-313
    • /
    • 2012
  • 홍매치목 매퉁이과의 꽃동멸속에 포함되는 Synodus fuscus 1개체가 제주도에서 채집되어, 한국산 미기록종으로 기재하고 국명은 '모래꽃동멸'로 명명하였다. 모래꽃동멸은 측선 상부 비늘 수가 3.5개, 하부 비늘 수는 5개로 꽃동멸 속의 다른 종과 구분된다. 또한 아가미 뚜껑 가장자리에 검은 점무늬가 없고, 등지느러미 기저장이 두장의 1/2보다 짧은 반면, 이와 유사종인 주홍꽃동멸은 아가미 뚜껑 가장자리에 검은 점무늬가 있고, 등지느러미 기저장이 두장의 1/2보다 길어서 두 종이 잘 구분된다. 본 연구에서는 모래꽃동멸의 계수계측치와 함께 한국산 꽃동멸속 어류의 종 검색표를 제시하였다.