• Title, Summary, Keyword: Bivalvia

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동해산 Panomya nipponica Nomura et Hatai, 1935 ( Bivalvia , Hiatellidae ) 의 종 기재 ( Panomya nipponica Nomura et Hatai, 1935 ( Bivalvia, Hiatellidae ) in the Northwestern Sea of Japan ( East Sea )

  • Lutaenko, Konstantin A.
    • The Korean Journal of Malacology
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    • v.13 no.2
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    • pp.109-115
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    • 1997
  • Panomya nipponica는 모식산지로 알려진 일본 북동부에서만 발견되는 것으로 알겨져 있으며, 일부학자들은 P. norvegica와 동일종으로 간주하기도 하나 패각의 형태에서는 뚜렷이 차이가 난다. 본 종은 드물게 발견되기 때문에 분류학적 위치가 아직 불분명하며, 일본에서 조차 근래에는 이 종에 대한 인용이나 보고가 거의 없어 동해(일본 북서해0에서 채집되느Panomya nipponica에 대한 종 기재를 하였다.

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First Record of Peregrinamor ohshimai (Mollusca: Bivalvia) from Korea

  • Kil, Hyun-Jong;Park, Tae-Seo
    • Animal Systematics, Evolution and Diversity
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    • v.25 no.2
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    • pp.205-207
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    • 2009
  • The specimens of Peregrinamor ohshimai, an ecto-commensal species to Upogebia major, were collected from the mudflat of Chilcheondo Is., Geoje-si, Gyungsangnam-do, Korea and diagnostic characters of P. ohshimai were analyzed. The genus Peregrinamor is reported in Korean fauna for the first time.

Peculiarities of Reproduction and Gamete Stucture of the Shipworm Zachsia zenkewitschi (Bivalvia - Teredinidae) (배벌레, Zachsia zenkewitschi (Bivalvia - Teredinidae)의 생식 특성과 배우체 구조)

  • Yakovlev, Yuri M.;Drozdov, Anatoly L.;Ferraguti, Marco
    • The Korean Journal of Malacology
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    • v.14 no.1
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    • pp.1-8
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    • 1998
  • 자웅이체인 배벌레(shipworm), Zachsia zenkewitschi의 생식에 관하여 연구를 진행하였다. 자성 생식기관은 하나의 난소와 소형의 웅성을 안고 있는 한 쌍의 외투막 주머니로 구성되어 있었다. 소형 웅성의 정소는 내장 신경절 주위에 위치하였다. 성숙된 알의 지름은 60$\mu\textrm{m}$이고 난황과 젤리막으로 싸여 있었다. Zachsia zenkewitschi의 정자는 약 2.6$\mu\textrm{m}$의 원추상 두부, 0.5$\mu\textrm{m}$의 첨체, 직경 약 0.9 $\mu\textrm{m}$의 중부로 되어 있었다.

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Annual Variation of Water Quality and Bivalvia Communities in Gamak Bay (가막만의 수질환경과 이매패류(Bivalvia)군집의 연간변동)

  • Kim, Yun-Seol;Yoon, Ho-Seop;Park, Il-Woong;Lee, Woo-Bum;Joo, Seung-Yong;Choi, Sang-Duk
    • Korean Journal of Environmental Biology
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    • v.26 no.4
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    • pp.279-291
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    • 2008
  • The seasonal distribution pattern of the Bivalvia samples collected from 12 stations in Gamak Bay in April, July, September and November from 2001 to 2006. A total of 28 species (226.72$\pm$196.20 ind. m$^{-2}$) were identified. The COD has decreased from 3.30 mg L$^{-1}$ to 1.89 mg L$^{-1}$ level on average and especially, the COD of sediment has decreased from 21.51 mg g-dry$^{-1}$ to 16.99 mg g-dry$^{-1}$ level on average. Therefore, water quality level of Gamak Bay was improved from level 3 to 2. The dominant species over 1.0 percentages were composed of the total 13 species, and they occupied 96.75% of the total density of the Bivalvia. Major dominant species was Musculista senhousia 100.38 ind. m$^{-2}$ (22.16%), Moerella rutila 69.00 ind. m$^{-2}$ (15.23%), Theorafragilis 49.70 ind. m$^{-2}$ (10.97%), Mytilus edulis 42.18 ind. m$^{-2}$ (9.31 %), and Raphia undulata 40.99 ind. m$^{-2}$ (9.05%). This area could be divided into three groups by the cluster analysis based on the total species composition.

Five Unrecorded Ostreacean Species (Mollusca, Bivalvia) from Korean Waters (한국산 굴상과(연체동물문, 이매패강)의 5미기록종)

  • Hongying Qi;Byung Lae Choe
    • Animal Systematics, Evolution and Diversity
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    • v.16 no.2
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    • pp.133-140
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    • 2000
  • As a result of study on the oysters collected from 8 localities of Korean coastal area, The following five species were found to be new to the Korean fauna: Parahyotissa chemnitzi ( Hanley, 1786) and P. inaequivalvis (Sowerby, 1971) belong to the Pycnodonteidae; Dendostrea folium (Linnaeus, 1758), Ostrea futamiensis Seki, 1929, and Saccostrea mordax (Gould, 1850) belong to the Ostreidae.

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A Catalogue of Molluscan Fauna In Korea (한국산 연체동물 목록)

  • Lee, Jun-Sang;Min, Duk-Ki
    • The Korean Journal of Malacology
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    • v.18 no.2
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    • pp.93-217
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    • 2002
  • Molluscan specimens collected in the whole country of Korea during the from 1994 through 2002, were identified and classified. A total of 1,560 molluscan species were listed in this study; one species in class Aplacophora, 18 species in class Polyplacophora, 1,038 species in class Gastropoda, 467 species in class Bivalvia, 14 species in class Scaphopoda and 22 species in class Cephalopoda. Among the identified species, 360 species (three species in class Polyplacophora, 266 species in class Gastropoda, 85 species in class Bivalvia, 6 species in class Scaphopoda) are newly recorded to Korean fauna.

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A New Species of Arca L., 1758 (Bivalvia: Arcidae) from New Caledonia, with Comments on the Genus

  • Lutaenko, Konstantin A.;Maestrati, Philippe
    • The Korean Journal of Malacology
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    • v.23 no.2
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    • pp.155-164
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    • 2007
  • A new species, Arca koumaci Lutaenko et Maestrati n. sp. (Bivalvia: Arcidae), is described from New Caledonia. The species is characterized by the small size, the convex shell with a strong posterior umbonal ridge covered by spikes, the widely curved ventral margin, and presence of cancellate sculpture and convergent marginal teeth. Presence of spikes on the posterior ridge is a unique morphological feature recorded for the first time in the genus. It is proposed that the only subgenus, namely Pliocene A. (Arcoptera) Heilprin, 1887, apart from nominative, can be recognized in the genus. Three morphological types are distinguished within the genus based on shell shape and sculpture. Bathymetric analysis shows that representatives of Arca inhabit water depths down to 175 m, and more than half of Recent species were found below 50 m. Types of A. bouvieri P. Fischer, 1874, Arca boucardi Jousseaume, 1894, Arca avellana Lamarck, 1819, and Arca retusa Lamarck, 1819 are illustrated.

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Indirect Evidence on Sex Reversal of Sinonovacula constricta (Bivalvia: Euheterodonta) and Gomphina veneriformis (Bivalvia: Veneridae)

  • Shin, Yun Kyung;Park, Jung Jun;Choi, Ji Sung;Lee, Jung Sick
    • Development and Reproduction
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    • v.18 no.2
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    • pp.73-78
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    • 2014
  • This study attempts to propose the possibility of the sex reversal in Sinonovacula constricta and Gomphina veneriformis by confirming the changes in the sex ratio with the shell length in the same population level. For analysis of sex ratio, 100 individuals of S. constricta (SL 26.5-95.0 mm) and 2385 individuals of G. veneriformis (SL 15.1-60.1 mm) were used. Sex was analyzed histologically. Both species displayed the tendency of increase in the female proportion with increase in shell length. In this study, changes in the sex ratio in accordance with the growth of S. constricta and G. veneriformis are determined to be indirect evidence that signifies their sex reversal.