• 한국수산과학회지
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• 제36권3호
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• pp.276-282
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• 2003

Using Megabalanus rosa a sessile filterfeeder, its scope for growth (SFG) by analysis of energy budget were examined and free amino acids composition of whole body tissue were analyzed under the exposure to different concentrations of Hg Cu and Cd. The $96\;hr-LC_{50}$ of the barnacle after 96 hr exposure to Hg, Cu, and Cd were 0.220, 0.269 and $1.380\;mgL^{-1}$, respectively. Hg and Cu showed stronger toxicity than Cd, while Hg and Cu had similar influence on the survival of the barnacle. SFG of the barnacles exposed to sublethal concentrations of mercury was 18.936 $Jgdrywt.^{-1}hr^{-1}$ in control group and as increase of mercury concentration the SFG remarkably reduced to 0.041 $Jgdrywt.^{-1}hr^{-1}\;at\;0.1\;mgL^{-1}$ concentration of Hg. In the case of Cu, the SFG was 29.841 $Jgdrywt.^{-1}hr^{-1}$ in control group and as increase of concentration, the SFG remarkably reduced to -8.304 $Jgdrywt.^{-1}hr^{-1}\;at\;0.1\;mgL^{-1}$ concentration. In Cd the SFG was 15.852 $Jgdrywt.^{-1}hr^{-1}$ in control group, and as increasing concentration, the SFG remarkably reduced to -19.490 $Jgdrywt.^{-1}hr^{-1}\;at\;0.1\;mgL^{-1}.$ Content of free amino acid (FAA) of whole body tissue of the barnacle was 45084 $mgkg^{-1}$ in control group, but it was reduced remarkably to 28,130, 37,500 and 37,106 $mgkg^{-1}$ at 0.1 $mgL^{-1}$ concentration of Hg and Cu, and 0.4 $mgL^{-1}$of Cd, respectively. Sum of threonine + serine was 1,334 $mgkg^{-1}$ if control but reduced remarkably to 1,223, 849 and 888 $mgkg^{-1}$ at 0.1 $mgL^{-1}$ of Hg and Cu, and 0.4 $mgL^{-1}$ of Cd, respectively.

• 한국수산과학회지
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• 제23권6호
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• pp.457-467
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• 1990

Sessile barnacle, Balanus trigonus Darwin, was collected from the intertidal rocks and the external shells of bivalve Mylius coruscus. The nauplius and cyprid larvae were cultured in a constant temperature cabinet at a temperature of $20^{\circ}C$ and a light regime of 14 h light and 10 h darkness. Larval development includes the six nauplius stages and a cyprid stage prior to settlement and metamorphosis to the young adult. Morphological characteristics including antennules, antennae and mandibles are described and illustrated. All nauplius larvae have trilobed labra typical in balanoides. The developmental time taken from newly hatched nauplius I to cyprid was $9\~13$ days and averaged 11 days.

• Fisheries and Aquatic Sciences
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• 제1권1호
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• pp.72-78
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• 1998

The larvae of Balanus improvisus were reared in the laboratory from hatching to cyprid. Larval development consists of six nauplius stages and a cyprid. Morphological features of all the nauplius stages are illustrated and described.

• Animal Systematics, Evolution and Diversity
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• 제18권1호
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• pp.35-48
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• 2002

유생의 형태발생이 미발표된 별따개비속의 하구별따개비는 조간대의 암석 기저부에 부탁하거나 가리비의 껍질에 부착하여 생활하는 따개비이다. 유생을 실험실에서 최초로 사육하여 유생발생단계를 형태적으로 도시 및 기재하였다. 노플리우스에서 어린 성체 직전까지 유생사육 기간은 20$\pm$0.5$^{\circ}C$에서 3주일이 소요되었다. 각 유생단계별로 유생의 크기 및 강모식을 설명하고 하구별따개비 유생의 유생기별 전장, 갑폭, 촉각 내지에 위치한 4적의 강모형태, 상순, 4-6기의 노플리우스 두순극의 형태 및 제 1촉각, 제 2촉각, 대악의 강모식이 본 따개비유생의 동정에 유용함을 설명하였다 위에서 언급한 형태학적 특징 뿐만 아니라 복부돌기에 있는 미세가슴가시의 형태와 미세가시수도 따개비유생의 종내 및 종간 동정에 매우 유용함을 구명하였다.