Johnny Karlsson

903 total citations
17 papers, 725 citations indexed

About

Johnny Karlsson is a scholar working on Genetics, Molecular Biology and Ecology. According to data from OpenAlex, Johnny Karlsson has authored 17 papers receiving a total of 725 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Genetics, 4 papers in Molecular Biology and 4 papers in Ecology. Recurrent topics in Johnny Karlsson's work include Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities (6 papers), Reproductive biology and impacts on aquatic species (4 papers) and Avian ecology and behavior (3 papers). Johnny Karlsson is often cited by papers focused on Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities (6 papers), Reproductive biology and impacts on aquatic species (4 papers) and Avian ecology and behavior (3 papers). Johnny Karlsson collaborates with scholars based in Sweden. Johnny Karlsson's co-authors include Per‐Erik Olsson, Jonas von Hofsten, Sven G. Nilsson, Iwan Jones, Marianne Andersson, Bertil Borg, Håkan Berg, Birgitta Grahn, Peter Thomas and Anders Larsson and has published in prestigious journals such as Analytical Biochemistry, Biology of Reproduction and General and Comparative Endocrinology.

In The Last Decade

Johnny Karlsson

17 papers receiving 667 citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Johnny Karlsson 218 198 154 148 125 17 725
A. G. Burrini 217 1.0× 89 0.4× 244 1.6× 69 0.5× 129 1.0× 48 955
Haide Breucker 149 0.7× 109 0.6× 99 0.6× 42 0.3× 39 0.3× 27 693
Gianfranco Giorgi 576 2.6× 264 1.3× 190 1.2× 88 0.6× 69 0.6× 35 1.2k
Charles A. Lessman 185 0.8× 31 0.2× 147 1.0× 200 1.4× 173 1.4× 50 696
Yasuhiro Iwao 503 2.3× 81 0.4× 182 1.2× 166 1.1× 205 1.6× 52 1.2k
J Leloup 80 0.4× 305 1.5× 112 0.7× 20 0.1× 172 1.4× 31 733
K. E. Dixon 453 2.1× 328 1.7× 414 2.7× 70 0.5× 83 0.7× 44 1.2k
H. Laufer 197 0.9× 476 2.4× 137 0.9× 62 0.4× 59 0.5× 30 994
Noritaka Hirohashi 411 1.9× 77 0.4× 259 1.7× 81 0.5× 239 1.9× 59 1.6k
Cornelia Schmidt 657 3.0× 72 0.4× 459 3.0× 80 0.5× 119 1.0× 42 1.2k

Countries citing papers authored by Johnny Karlsson

Since Specialization
Citations

This map shows the geographic impact of Johnny Karlsson'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 Johnny Karlsson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Johnny Karlsson more than expected).

Fields of papers citing papers by Johnny Karlsson

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Johnny Karlsson. 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 Johnny Karlsson. The network helps show where Johnny Karlsson may publish in the future.

Co-authorship network of co-authors of Johnny Karlsson

This figure shows the co-authorship network connecting the top 25 collaborators of Johnny Karlsson. A scholar is included among the top collaborators of Johnny Karlsson 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 Johnny Karlsson. Johnny Karlsson is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

17 of 17 papers shown
1.
Hoffmann, Erik, et al.. (2012). Androgen receptor-beta mRNA levels in different tissues in breeding and post-breeding male and female sticklebacks, Gasterosteus aculeatus. Reproductive Biology and Endocrinology. 10(1). 23–23. 16 indexed citations
2.
Berg, Håkan, et al.. (2009). Characterization of antibodies for quantitative determination of spiggin protein levels in male and female three-spined stickleback (Gasterosteus aculeatus). Reproductive Biology and Endocrinology. 7(1). 46–46. 1 indexed citations
3.
Karlsson, Johnny, et al.. (2008). Sox9a regulation of ff1a in zebrafish (Danio rerio) suggests an involvement of ff1a in cartilage development. Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology. 153(1). 39–43. 3 indexed citations
4.
Olsson, Per‐Erik, Håkan Berg, Jonas von Hofsten, et al.. (2005). Molecular cloning and characterization of a nuclear androgen receptor activated by 11-ketotestosterone. Reproductive Biology and Endocrinology. 3(1). 37–37. 90 indexed citations
5.
Hofsten, Jonas von, Johnny Karlsson, & Per‐Erik Olsson. (2003). Fushi tarazu factor-1 mRNA and protein is expressed in steroidogenic and cholesterol metabolising tissues during different life stages in Arctic char (Salvelinus alpinus). General and Comparative Endocrinology. 132(1). 96–102. 10 indexed citations
6.
Hofsten, Jonas von, Johnny Karlsson, Iwan Jones, & Per‐Erik Olsson. (2002). Expression and Regulation of Fushi Tarazu Factor-1 and Steroidogenic Genes During Reproduction in Arctic Char (Salvelinus alpinus)1. Biology of Reproduction. 67(4). 1297–1304. 33 indexed citations
7.
Hofsten, Jonas von, Iwan Jones, Johnny Karlsson, & Per‐Erik Olsson. (2001). Developmental Expression Patterns of FTZ-F1 Homologues in Zebrafish (Danio rerio). General and Comparative Endocrinology. 121(2). 146–155. 33 indexed citations
8.
Karlsson, Johnny, Jonas von Hofsten, & Per‐Erik Olsson. (2001). Generating Transparent Zebrafish: A Refined Method to Improve Detection of Gene Expression During Embryonic Development. Marine Biotechnology. 3(6). 522–527. 259 indexed citations
9.
Fox, Donald A., et al.. (2000). Retinoic acid produces rod photoreceptor selective apoptosis in developing mammalian retina.. PubMed. 41(3). 937–47. 30 indexed citations
10.
Edvinsson, Sören & Johnny Karlsson. (1998). Recoding occupations in the Demographic Data Base into HISCO. 137–167. 3 indexed citations
11.
Karlsson, Johnny, et al.. (1994). A Method for Protein Assay in Laemmli Buffer. Analytical Biochemistry. 219(1). 144–146. 61 indexed citations
12.
Karlsson, Johnny. (1993). Supplemental Food and Laying Date in the European Starling. Ornithological Applications. 95(4). 1031–1034. 45 indexed citations
13.
Alerstam, Thomas, et al.. (1986). Spring migration of birds across the Greenland Inlandice. 21. 27 indexed citations
14.
Henning, Claes, et al.. (1984). Comparative Study of Netilmicin/Tinidazole Versus Netilmicin/Clindamycin in the Treatment of Severe Abdominal Infections. Scandinavian Journal of Infectious Diseases. 16(3). 297–303. 4 indexed citations
15.
Karlsson, Johnny & Hans Källander. (1977). Fluctuations and Density of Suburban Populations of the Blackbird Turdus merula. Ornis Scandinavica. 8(2). 139–139. 9 indexed citations
16.
Karlsson, Johnny & Sven G. Nilsson. (1977). THE INFLUENCE OF NEST‐BOX AREA ON CLUTCH SIZE IN SOME HOLE‐NESTING PASSERINES. Ibis. 119(2). 207–211. 100 indexed citations
17.
Karlsson, Johnny, et al.. (1971). Umeåstudent 1970 : några data om de nyinskrivna studenterna vid Umeå universitet och högskolor höstterminen l970. KTH Publication Database DiVA (KTH Royal Institute of Technology). 1 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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