남해안 봉강천과 미룡천 하구에서 기수갈고둥의 분포 및 서식지 환경 특성
Habitat Environments and Spatiotemporal Distribution of Clithon retropictum at the Estuaries of Bonggang and Miryoung Streams in the Southern Coast of Korea
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At the estuaries of Bonggang and Miryong streams in the Korean southern coast, the spatiotemporal distribution and habitat environment of a nerite snail, Clithon retropictum (Gastropoda: Neritidae), which has been assigned as a legally protected species of Korea, were explored. Physicochemical environmental factors such as water temperature, salinity, tidal level distribution as well as biotic environments (chlorophyll-a concentration and epilithic microalgae composition) were monitored every month. The relationships between the environmental factors and spatiotemporal distribution of the nerite snail population were analyzed. Water temperature, salinity, and water level varied by season and lunar tidal rhythm. The spatiotemporal distribution of the nerite snail was mostly related to water salinity. Among epilithic algae which were the priority prey of snails, blue-green algae and green algae dominated in summer and autumn, while diatoms predominated during winter and spring. Chlorophyll-a concentration was highly and positively correlated with the population density of the nerite snail. The correlation coefficients were different depending on the taxon (Family) of epilithic algae. The mean population density was 302.2 inds m-2 and 271.8 inds m-2 in Bonggang Stream and Miryong Stream, respectively. The egg capsules of the nerite snail in the two habitats were observed from March (in Bonggang Stream) or April (in Miryong Stream) to August, and newly hatched juveniles recruited in the habitats from August were assessed with regard to frequency distributions of shell width. The occurrence of large-sized snails in upper stream reaches of both Bonggang and Miryong indicated the movement of spats from the mouth to the upper reaches during the whole life cycle.
Abstract
At the estuaries of Bonggang and Miryong streams in the Korean southern coast, the spatiotemporal distribution and habitat environment of a nerite snail, Clithon retropictum (Gastropoda: Neritidae), which has been assigned as a legally protected species of Korea, were explored. Physicochemical environmental factors such as water temperature, salinity, tidal level distribution as well as biotic environments (chlorophyll-a concentration and epilithic microalgae composition) were monitored every month. The relationships between the environmental factors and spatiotemporal distribution of the nerite snail population were analyzed. Water temperature, salinity, and water level varied by season and lunar tidal rhythm. The spatiotemporal distribution of the nerite snail was mostly related to water salinity. Among epilithic algae which were the priority prey of snails, blue-green algae and green algae dominated in summer and autumn, while diatoms predominated during winter and spring. Chlorophyll-a concentration was highly and positively correlated with the population density of the nerite snail. The correlation coefficients were different depending on the taxon (Family) of epilithic algae. The mean population density was 302.2 inds m-2 and 271.8 inds m-2 in Bonggang Stream and Miryong Stream, respectively. The egg capsules of the nerite snail in the two habitats were observed from March (in Bonggang Stream) or April (in Miryong Stream) to August, and newly hatched juveniles recruited in the habitats from August were assessed with regard to frequency distributions of shell width. The occurrence of large-sized snails in upper stream reaches of both Bonggang and Miryong indicated the movement of spats from the mouth to the upper reaches during the whole life cycle.
참고문헌 (23)
- 박정순, "멸종위기 II급 기수갈고둥(Clithon retropictus)의 창포만내 서식지와 생태 조사", 제54회 전국과학전람회 작품설명서, 26~ (2008)
- 오현택, "해양보호생물 서식처 매립행위에 따른 영향평가기법- 기수갈고둥 및 대추귀고둥 사례 중심 -", 수산해양교육연구, 30(4), pp.1439~1452 (2018), 한국수산해양교육학회[DOI]
- 이수동, "남해안 연초천에 서식하는 기수갈고둥의 생태적 특성 연구", 한국환경생태학회지, 32(6), pp.591~602 (2018), 한국환경생태학회[DOI]
- 조만교, "멸종위종 II급 기수갈고둥(Clithon retropictus)의 봉강천 서식환경 조사를 통한 형태 및 생태 연구", 제56회 전국과학전람회 작품설명서, 45~ (2010)
- 기수갈고둥 분포 현황도- 경남권: 창원, 고성, 사천, 통영, 거제, "홍성진", 낙동강유역환경청, 34~ (2019)
- 조인영, "Complete sequence analysis of mitochondrial genome of Clithon retropictum (Gastropoda; Neritidae)", The Korean Journal of Malacology, 33(3), pp.165~171 (2017), 한국패류학회
- 최상덕, "Protection and Preservation of Clithon retropictus, Level II Endangered Species Declining due to Development Projects Carried out in its Habitat", 환경생물, 36(2), pp.174~179 (2018), 한국환경생물학회[DOI]
- Fukumori H, "The complete mitochondrial genome of the stream snail Clithon retropictus (Neritimorpha:Neritidae)", Mitocondrial DNA Pt B, 1, pp.820~821 (2016)
- Furujo Y, "Distribution and microhabitat of coexisting two freshwater snail species, Semisulcospira libertina (Gould) (Prosobranchia; Pleuroceridae) and Clithon retropictus (Martens) (Prosobranchia: Neritidae)", Jap Jour Malac, 59, pp.245~260 (2000)
- Haraguchi Y, "Studies on ecology of Clithon retropictus by a one-release and capture experiment in Goino River, Kagoshima, Japan", Nature of Kagoshima, 44, pp.145~150 (2018)
- Hirata T, "Seasonal changes in moving activity of Clithon retropictus (Prosobranchia: Neritidae)", Jap Jour Malac, 51, pp.57~66 (1992)
- Hirata T, "Salt tolerance of Clithon retropictus (Gastropoda: Neritidae) in relation to habitat and growth", Bull Fac Edu Human Sci Univ Yamanashi, 6, pp.211~218 (2014)
- Kobayashi S, "Distribution and spatiotemporal variation in the population structure of the fluvial neritid gastropod Clithon retropictus", Benthos Res, 57(2), pp.91~101 (2002)
- Kumazawa NH, "Salinity preferences of three neritid gastropods", Jap Jour Malac, 50(1), pp.61~67 (1991)
- Miyajima H, "Spatial distribution in relation to life history in the neritid gastropod Clithon retropictus in the Kanzaki River Estuary, Osaka, Japan", Plankton Benthos Res, 9(4), pp.207~216 (2014)
- Nishiwaki S, "Studies on the migratory direction of Clithon retropictus (Prosobranchia: Neritidae) by marking-and-recapture method", Jap Jour Malac, 50(3), pp.202~210 (1991)
- Nishiwaki S, "Egg-laying season and monthly change in egg capsule production of Clithon retropictus (Prosobranchia: Neritidae)in the Naka River of Izu Peninsula", Jap Jour Malac, 50(3), pp.197~201 (1991)
- Ronald. G. Noseworthy, "The Occurrence of Clithon retropictus (v. Martens, 1879) (Gastropoda: Neritidae) in an Unusual Habitat, Northern Jeju Island, Republic of Korea", Ocean Science Journal, 48(3), pp.259~262 (2013), 한국해양과학기술원[DOI]
- Ronald. G. Noseworthy, "The Occurrence of Clithon retropictus (von Martens in Kobelt, 1879, Gastropoda: Neritidae) in Jeju Island, Republic of Korea", The Korean Journal of Malacology, 28(2), pp.81~90 (2012), 한국패류학회[DOI]
- Ohara T, "Niche segregation of coexisting two freshwater snail species, Semisulcospira libertina (Gould) (Prosobranchia: Pleuroceridae) and Clithon retropictus (Martens) (Prosobranchia: Neritidae)", Jap Jour Malac, 59, pp.135~147 (2000)
- So Park, "Transcriptomic Analysis of the Endangered Neritid Species Clithon retropictus: De Novo Assembly, Functional Annotation, and Marker Discovery", Genes, 7(7), pp.35~ (2016), MDPI AG[DOI]
- Reynolds CS, "Phytoplankton periodicity: the interactions of form, function and environmental variability", Freshwat Biol, 14(2), pp.111~142 (1984)
- Shigemiya Y, "Age distribution, growth, and lifetime copulation frequency of a freshwater snail, Clithon retropictus (Neritidae)", Popul Ecol, 43, pp.133~140 (2001)