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1992 Fiscal Year Final Research Report Summary

Evaluation of benthic foraminiferal test morphology in terms of experimental biology.

Research Project

Project/Area Number 02454028
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Stratigraphy/Paleontology
Research InstitutionShizuoka University

Principal Investigator

KITAZATO Hiroshi  Shizuoka University, Faculty of Science, Associate Professor, 理学部, 助教授 (00115445)

Co-Investigator(Kenkyū-buntansha) IKEYA Noriyuki  Shizuoka University, Faculty of Science, Professor, 理学部, 教授 (50022223)
WADA Hideki  Shizuoka University, Faculty of Science, Associate Professor, 理学部, 助教授 (20126791)
Project Period (FY) 1990 – 1992
KeywordsProtista, / Benthic Foraminifera / Taxonomy, / Morphological Analysis / Functional Morphology / Genetic Variation / Culture Experiments
Research Abstract

This research is to clarify the biological meanings of benthic foraminiferal test morphology through culture experiments. Culture experiments were made under the condition that water temperature, salinity, dissolved oxygen contents, light intensity, and other environmental factors were precisely controlled.
(1) Culture systems: Benthic foraminifera, which were collected from many places around Japanese Islands, are maintained in the laboratory for culture experiments. Three different kinds of stock cultures are running in the laboratory: rough culture, raw culture and clone culture. Rough culture is a culture which keeps many species with natural bottom substrate. Raw culture is a stock of single species which is picked up from populations of rough culture.
Clone culture is a stock of cloned population having a same genetic composition.
(2) Culture experiments under controlled environments: Culture experiments were made for three species, Trochammina hadai, Ammonia beccarii, Glabratella o … More percularis. Growth rates were changed according to temperature and salinity of culture water. However, test morphology is not changed. Test morphology was changed in relation to the dissolved oxygen contents in culture water. Periphery of a test is smoothed under the low oxygen environment. In contrast, periphery is lobated under the high oxygen environment. Pore diameters of Ammonia beccarii also changed with the oxygen contents in culture water. A. beccarii made large pores under the low oxygen environments. These results show that dissolved oxygen content is strongly affect to test morphology of benthic foraminifera. Deep-sea foraminifera which were collected from Sagami Bay are cultured under the conditions that both hydroaulic pressure and food contents are controlled. Deep-sea benthic foraminifera were well grown in high hydroaulic pressure and high food contents.
(3) Breeding experiments: Breeding experiments of Glabratella opercularis were succeeded to make plastogamic pairs. Lots of daughter cells were born from plastogamic pairs. Less

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 北里 洋: "古生物学に何を望むかー飼育実験の重要性ー" 化石. 50号. 32-33 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kitazato Hiroshi: "Pseudopodia of benthic foramirifera and thsim relationships to the test mophology." Takayanagi Y.and Saito t.(eds.),Studies in benthic foramirifera. 103-108 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 北里 洋,大鋸 朋生: "相模湾におけるEediment-Water Interfaceの目視観測と底生有孔虫類の飼育実験" 第8回「しんかい2000」シンポジウム特集号. 199-208 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kitazato hiroshi: "Diversity characterisitics of benthic foramiriferal wicrofabitats in four envirouments aroud Japan" Marine Michopaleontology.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] KITAZATO,Hiroshi: "What is expected of paleontology? - A comment: importance of laboratory culture -" Fossils. no. 50. 32-33 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] KITAZATO, Hiroshi: "Pseudopodia of benthic foraminifera and their relationships to the test morphology." Takayanagi, Y. and Saito, T. (eds.), Studies in Benthic Foraminifera. 103-108 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] KITAZATO,Hiroshi and OHGA Tomowo: "In situ observation of sediment-water interface and culture experiment of benthic foraminifera at Sagami Bay." Proc. JAMSTEC Symp. Deep Sea Res.no. 8. 199-208 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] KITAZATO,Hiroshi: "Diversity and characteristics of benthic foraminiferal microhabitats in four marine environments around Japan." Marine Micropaleout.v. 23.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1994-03-24  

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