Takashi Iwamatsu

3.5k total citations
139 papers, 2.8k citations indexed

About

Takashi Iwamatsu is a scholar working on Physiology, Reproductive Medicine and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Takashi Iwamatsu has authored 139 papers receiving a total of 2.8k indexed citations (citations by other indexed papers that have themselves been cited), including 83 papers in Physiology, 54 papers in Reproductive Medicine and 32 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Takashi Iwamatsu's work include Reproductive biology and impacts on aquatic species (83 papers), Sperm and Testicular Function (54 papers) and Reproductive Biology and Fertility (32 papers). Takashi Iwamatsu is often cited by papers focused on Reproductive biology and impacts on aquatic species (83 papers), Sperm and Testicular Function (54 papers) and Reproductive Biology and Fertility (32 papers). Takashi Iwamatsu collaborates with scholars based in Japan, United States and France. Takashi Iwamatsu's co-authors include M. C. Chang, Tatsuo Ohta, Tadayuki Ohta, Noriyoshi Sakai, Yasuaki Yoshimoto, Yukio Hiramoto, Yoshitaka Nagahama, Kazuo Onitake, Yasushi Shibata and Yuko Wakamatsu and has published in prestigious journals such as Nature, Journal of Biological Chemistry and Developmental Biology.

In The Last Decade

Takashi Iwamatsu

138 papers receiving 2.7k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Takashi Iwamatsu Japan 32 1.4k 1.0k 1.0k 756 610 139 2.8k
Masaaki Morisawa Japan 32 2.1k 1.5× 687 0.7× 1.8k 1.8× 700 0.9× 492 0.8× 83 3.3k
Michiyasu Yoshikuni Japan 26 1.2k 0.9× 1.0k 1.0× 454 0.5× 492 0.7× 506 0.8× 70 2.3k
Ichiro Iuchi Japan 32 1.4k 1.0× 731 0.7× 545 0.5× 325 0.4× 487 0.8× 88 2.6k
Masakane Yamashita Japan 40 1.7k 1.2× 1.7k 1.6× 1.1k 1.0× 1.8k 2.4× 2.3k 3.7× 156 5.4k
Vanesa Robles Spain 30 1.6k 1.1× 872 0.8× 1.3k 1.3× 594 0.8× 444 0.7× 72 2.7k
Kelly Selman United States 26 2.4k 1.7× 983 1.0× 619 0.6× 443 0.6× 377 0.6× 34 3.5k
Yasutoshi Yoshiura Japan 38 1.4k 1.0× 1.5k 1.5× 747 0.7× 181 0.2× 724 1.2× 98 3.8k
Kenjiro Yamagami Japan 28 1.2k 0.8× 548 0.5× 490 0.5× 273 0.4× 330 0.5× 48 1.9k
Finn‐Arne Weltzien Norway 30 1.9k 1.4× 1.2k 1.2× 713 0.7× 186 0.2× 411 0.7× 94 3.1k
Shigeki Yasumasu Japan 29 907 0.6× 573 0.6× 337 0.3× 271 0.4× 571 0.9× 91 2.3k

Countries citing papers authored by Takashi Iwamatsu

Since Specialization
Citations

This map shows the geographic impact of Takashi Iwamatsu's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Takashi Iwamatsu with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Takashi Iwamatsu more than expected).

Fields of papers citing papers by Takashi Iwamatsu

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Takashi Iwamatsu. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Takashi Iwamatsu. The network helps show where Takashi Iwamatsu may publish in the future.

Co-authorship network of co-authors of Takashi Iwamatsu

This figure shows the co-authorship network connecting the top 25 collaborators of Takashi Iwamatsu. A scholar is included among the top collaborators of Takashi Iwamatsu based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Takashi Iwamatsu. Takashi Iwamatsu is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Iwamatsu, Takashi, Norio Yoshizaki, & Yasushi Shibata. (1997). Changes in the chorion and sperm entry into the micropyle during fertilization in the teleostean fish, Oryzias latipes. Development Growth & Differentiation. 39(1). 33–41. 26 indexed citations
2.
Taguchi, Tomohiko, et al.. (1992). STRUCTURES OF CORTICAL ALVEOLAR-DERIVED GLYCOPOLYPROTEINS (HYOSOPHORIN) FROM THE EGGS OF MEDAKA FISH SPECES : ORYZIAS LATIPES (ORL) AND O.MELASTIGMA (ORM)(Developmental Biology)Proceedings of the Sixty-Third Annual Meeting of the Zoologiacal Socistry of Japan :. ZOOLOGICAL SCIENCE. 9(6). 1173. 1 indexed citations
3.
Taguchi, Tomohiko, et al.. (1991). CORTICAL ALVEOLUS-DERIVED GLYCOPROTEINS(HYOSOPHORIN) FROM MEDAKA FISH EGGS : STRUCTURAL DIVERSITIES AMONG SPECIES(Developmental Biology)(Proceedings of the Sixty-Second Annual Meeting of the Zoological Society of Japan) :. ZOOLOGICAL SCIENCE. 8(6). 1079. 1 indexed citations
4.
Iwamatsu, Takashi, et al.. (1986). Experiments on Interspecific Hybridization between Oryzias melastigma and Oryzias javanicus. ZOOLOGICAL SCIENCE. 3(2). 287–293. 11 indexed citations
5.
Iwamatsu, Takashi. (1984). Experiments on interspecific hybridization between Oryzias atipes and Oryzias celebensis. ZOOLOGICAL SCIENCE. 1(4). 653–663. 24 indexed citations
6.
Iwamatsu, Takashi & Kenji Hirata. (1984). Normal Course of Development of the Java Medaka,Oryzias javanicus. 87–109. 5 indexed citations
7.
Iwamatsu, Takashi, et al.. (1982). ON ORYZIAS JAVANICUS COLLECTED FROM JAKARTA, SINGAPORE AND WEST KALIMANTAN. 日本動物学彙報. 1(3). 5–6. 12 indexed citations
8.
Iwamatsu, Takashi & Tadayuki Ohta. (1981). On a Relationship between Oocyte and Follicle Cells around the Time of Ovulation in the Medaka,Oryzias latipes. 日本動物学彙報. 54(1). 17–29. 11 indexed citations
9.
Iwamatsu, Takashi. (1981). Inhibitory Effect of Sera from Various Animals on in vitro Maturation of the Oocyte. 日本動物学彙報. 54(3). 157–163. 1 indexed citations
10.
Iwamatsu, Takashi & Toshiyuki Katoh. (1978). Maturation in vitro of Oocytes of the Loach,Misgurnus anguillicaudatus by Steroid Hormones and Gonadotropins. 日本動物学彙報. 51(2). 79–89. 6 indexed citations
11.
Iwamatsu, Takashi, et al.. (1977). Studies on Oocyte Maturation of the Medaka,Oryzias latipes IV.Effect of Temperature on Progesterone-and Gonadotropin-Induced Maturation :. 日本動物学彙報. 50(4). 212–219. 2 indexed citations
12.
Iwamatsu, Takashi, Tatsuo Ohta, Naoki Nakayama, & Hirotaka Shoji. (1976). Studies of Oocyte Maturation of the Medaka,Oryzias latipes III.Cytoplasmic and Nuclear Changes of Oocyte during in vitro Maturation. 日本動物学彙報. 49(1). 28–37. 12 indexed citations
13.
Iwamatsu, Takashi & Ryuzo Yanagimachi. (1975). MATURATION IN VITRO OF OVARIAN OOCYTES OF PREPUBERTAL AND ADULT HAMSTERS. Reproduction. 45(1). 83–90. 54 indexed citations
14.
Iwamatsu, Takashi. (1974). Studies on Oocyte Maturation of the Medaka,Oryzias latipes II.Effects of Several Steroids and Calcium Ions and the Role of Follicle Cells on in vitro Maturation. 日本動物学彙報. 47(1). 30–42. 29 indexed citations
15.
Iwamatsu, Takashi. (1973). On the mechanism of ooplasmic segregation upon fertilization in Oryzias latipes. Japanese Journal of Ichthyology. 20(2). 73–78. 16 indexed citations
16.
Iwamatsu, Takashi. (1973). Studies on Oocyte Maturation in the Medaka, Oryzias latipes. I mprovement of Culture Medium for Oocytes in Vitro. Japanese Journal of Ichthyology. 20(4). 218–224. 13 indexed citations
17.
Iwamatsu, Takashi & M. C. Chang. (1972). SPERM PENETRATION IN VITRO OF MOUSE OOCYTES AT VARIOUS TIMES DURING MATURATION. Reproduction. 31(2). 237–247. 106 indexed citations
18.
Iwamatsu, Takashi & M. C. Chang. (1971). FACTORS INVOLVED IN THE FERTILIZATION OF MOUSE EGGS IN VITRO. Reproduction. 26(2). 197–208. 105 indexed citations
19.
Iwamatsu, Takashi. (1967). On Acquisition of Developmental Capacity in Oocytes of the Medaka,Oryzias latipes. 日本動物学彙報. 40(1). 6–19. 2 indexed citations
20.
Iwamatsu, Takashi. (1965). A Further Study on Fertilizability of Fish Oocytes. 日本動物学彙報. 38(4). 190–197. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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