World's Best Scientists 2026 revealed!

D-Index & Metrics

Genetics

D-Index
98
Citations
28164
World Ranking
818
National Ranking
409

Ecology and Evolution

D-Index
100
Citations
30858
World Ranking
279
National Ranking
113

Francisco J. Ayala publication distribution in Ecology and Evolution in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Ecology and Evolution in 2026. The highlighted bar marks where Francisco J. Ayala sits on this spectrum.

37–41 publications: 2 scientists 42–46 publications: 9 scientists 47–51 publications: 10 scientists 52–56 publications: 31 scientists 57–61 publications: 56 scientists 62–66 publications: 91 scientists 67–71 publications: 92 scientists 72–76 publications: 127 scientists 77–81 publications: 173 scientists 82–86 publications: 236 scientists 87–91 publications: 227 scientists 92–96 publications: 240 scientists 97–101 publications: 333 scientists 102–106 publications: 280 scientists 107–111 publications: 300 scientists 112–116 publications: 285 scientists 117–121 publications: 305 scientists 122–126 publications: 287 scientists 127–131 publications: 278 scientists 132–136 publications: 289 scientists 137–141 publications: 273 scientists 142–146 publications: 262 scientists 147–151 publications: 246 scientists 152–156 publications: 235 scientists 157–161 publications: 205 scientists 162–166 publications: 199 scientists 167–171 publications: 174 scientists 172–176 publications: 164 scientists 177–181 publications: 173 scientists 182–186 publications: 189 scientists 187–191 publications: 170 scientists 192–196 publications: 139 scientists 197–201 publications: 128 scientists 202–206 publications: 117 scientists 207–211 publications: 115 scientists 212–216 publications: 107 scientists 217–221 publications: 124 scientists 222–226 publications: 81 scientists 227–231 publications: 82 scientists 232–236 publications: 85 scientists 237–241 publications: 75 scientists 242–246 publications: 66 scientists 247–251 publications: 81 scientists 252–256 publications: 69 scientists 257–261 publications: 70 scientists 262–266 publications: 55 scientists 267–271 publications: 64 scientists 272–276 publications: 49 scientists 277–281 publications: 48 scientists 282–286 publications: 44 scientists 287–291 publications: 45 scientists 292–296 publications: 36 scientists 297–301 publications: 39 scientists 302–306 publications: 38 scientists 307–311 publications: 30 scientists 312–316 publications: 34 scientists 317–321 publications: 25 scientists 322–326 publications: 22 scientists 327–331 publications: 28 scientists 332–336 publications: 30 scientists 337–341 publications: 22 scientists 342–346 publications: 30 scientists 347–351 publications: 26 scientists 352–356 publications: 22 scientists 357–361 publications: 29 scientists 362–366 publications: 21 scientists 367–371 publications: 12 scientists 372–376 publications: 18 scientists 377–381 publications: 17 scientists 382–386 publications: 13 scientists 387–391 publications: 21 scientists 392–396 publications: 13 scientists 397–401 publications: 10 scientists 402–406 publications: 15 scientists 407–411 publications: 8 scientists 412–416 publications: 9 scientists 417–421 publications: 8 scientists 422–426 publications: 4 scientists 427–431 publications: 10 scientists 432–436 publications: 10 scientists 437–441 publications: 5 scientists 442–446 publications: 4 scientists 447–451 publications: 10 scientists 452–456 publications: 2 scientists 457–461 publications: 4 scientists 462–466 publications: 7 scientists 467–471 publications: 7 scientists 472–476 publications: 6 scientists 477–481 publications: 6 scientists 482–486 publications: 3 scientists 487–491 publications: 3 scientists 492–496 publications: 4 scientists 497–501 publications: 4 scientists 502–506 publications: 8 scientists 507–511 publications: 5 scientists 512–516 publications: 4 scientists 517–521 publications: 5 scientists 522–526 publications: 4 scientists 527–530 publications: 5 scientists 531+ publications: 100 scientists
37 publications 531+

This scientist: 534 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 531 publications or more.

Francisco J. Ayala D-index placement in Ecology and Evolution in 2026

The chart shows the D-index (discipline H-index) distribution of Ecology and Evolution scientists ranked by Research.com in 2026. The highlighted bar marks where Francisco J. Ayala sits on this spectrum.

30 D-Index: 95 scientists 31 D-Index: 123 scientists 32 D-Index: 191 scientists 33 D-Index: 245 scientists 34 D-Index: 252 scientists 35 D-Index: 244 scientists 36 D-Index: 249 scientists 37 D-Index: 244 scientists 38 D-Index: 254 scientists 39 D-Index: 254 scientists 40 D-Index: 280 scientists 41 D-Index: 274 scientists 42 D-Index: 266 scientists 43 D-Index: 233 scientists 44 D-Index: 248 scientists 45 D-Index: 208 scientists 46 D-Index: 201 scientists 47 D-Index: 213 scientists 48 D-Index: 207 scientists 49 D-Index: 172 scientists 50 D-Index: 209 scientists 51 D-Index: 199 scientists 52 D-Index: 153 scientists 53 D-Index: 169 scientists 54 D-Index: 163 scientists 55 D-Index: 148 scientists 56 D-Index: 120 scientists 57 D-Index: 146 scientists 58 D-Index: 137 scientists 59 D-Index: 140 scientists 60 D-Index: 104 scientists 61 D-Index: 119 scientists 62 D-Index: 118 scientists 63 D-Index: 99 scientists 64 D-Index: 77 scientists 65 D-Index: 100 scientists 66 D-Index: 86 scientists 67 D-Index: 83 scientists 68 D-Index: 75 scientists 69 D-Index: 94 scientists 70 D-Index: 57 scientists 71 D-Index: 68 scientists 72 D-Index: 59 scientists 73 D-Index: 63 scientists 74 D-Index: 66 scientists 75 D-Index: 60 scientists 76 D-Index: 42 scientists 77 D-Index: 49 scientists 78 D-Index: 39 scientists 79 D-Index: 37 scientists 80 D-Index: 43 scientists 81 D-Index: 41 scientists 82 D-Index: 45 scientists 83 D-Index: 34 scientists 84 D-Index: 40 scientists 85 D-Index: 35 scientists 86 D-Index: 55 scientists 87 D-Index: 24 scientists 88 D-Index: 24 scientists 89 D-Index: 30 scientists 90 D-Index: 23 scientists 91 D-Index: 25 scientists 92 D-Index: 27 scientists 93 D-Index: 27 scientists 94 D-Index: 13 scientists 95 D-Index: 23 scientists 96 D-Index: 12 scientists 97 D-Index: 14 scientists 98 D-Index: 19 scientists 99 D-Index: 16 scientists 100 D-Index: 14 scientists 101 D-Index: 5 scientists 102 D-Index: 21 scientists 103 D-Index: 16 scientists 104 D-Index: 10 scientists 105 D-Index: 7 scientists 106 D-Index: 7 scientists 107 D-Index: 7 scientists 108 D-Index: 6 scientists 109 D-Index: 9 scientists 110 D-Index: 11 scientists 111 D-Index: 12 scientists 112 D-Index: 9 scientists 113 D-Index: 7 scientists 114 D-Index: 3 scientists 115 D-Index: 8 scientists 116 D-Index: 5 scientists 117 D-Index: 11 scientists 118 D-Index: 4 scientists 119 D-Index: 2 scientists 120 D-Index: 5 scientists 121+ D-Index: 100 scientists
30 D-Index 121+

This scientist: 100 D-Index — 97th percentile

97% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 121 D-Index or more.

Research.com Recognitions

  • 2017 - Member of the European Academy of Sciences
  • 2001 - US President's National Medal of Science "For his theoretical and experimental discoveries on the origin of species, genetic diversity, and population dynamics that led to a new understanding of biological evolution, and his distinguished contributions to education, the promotion of public understanding of science, and the philosophy and ethics of the scientific enterprise.", Presented by President George W. Bush in a White House East Room ceremony on June 12, 2002.
  • 1980 - Member of the National Academy of Sciences
  • 1977 - Fellow of John Simon Guggenheim Memorial Foundation
  • 1977 - Fellow of the American Academy of Arts and Sciences
  • 1968 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Francisco J. Ayala was affiliated with the University of California, Irvine in the United States. Their research focused primarily on fields related to Medicine and Biochemistry, Genetics and Molecular Biology, with significant contributions specifically in Oncology, Cancer Research, Pulmonary and Respiratory Medicine, Cardiology and Cardiovascular Medicine, and Genetics.

They authored numerous papers covering topics that included Breast Cancer Treatment Studies, Advanced Breast Cancer Therapies, Cancer Immunotherapy and Biomarkers, HER2/EGFR in Cancer Research, Cancer Treatment and Pharmacology, Inflammatory Biomarkers in Disease Prognosis, and the Economic and Financial Impacts of Cancer.

Their recent publications included:

  • Mitochondrial DNA drives abscopal responses to radiation that are inhibited by autophagy, 2020, Nature Immunology
  • Mechanobiology of Autophagy: The Unexplored Side of Cancer, 2021, Frontiers in Oncology
  • SEOM-GEICAM-SOLTI clinical guidelines for early-stage breast cancer (2022), 2023, Clinical & Translational Oncology
  • Estratificación, monitorización y control del riesgo cardiovascular en pacientes con cáncer. Documento de consenso de SEC, FEC, SEOM, SEOR, SEHH, SEMG, AEEMT, AEEC y AECC, 2021, Revista Española de Cardiología
  • Assessment of a Genomic Assay in Patients With ERBB2-Positive Breast Cancer Following Neoadjuvant Trastuzumab-Based Chemotherapy With or Without Pertuzumab, 2023, JAMA Oncology

Frequent co-authors included:

  • Esmeralda García-Torralba
  • Esther Navarro Manzano
  • Pilar de la Morena Barrio
  • Sara López-Tarruella
  • Alejandra Ivars Rubio

Their work was frequently published in venues such as Annals of Oncology, Clinical & Translational Oncology, Cancer Research, Journal of Clinical Oncology, and Clinical Cancer Research.

Throughout their career, Francisco J. Ayala received several acknowledgments, including membership in the European Academy of Sciences in 2017 and the National Academy of Sciences in 1980. They were also a Fellow of the John Simon Guggenheim Memorial Foundation and the American Academy of Arts and Sciences, both from 1977, as well as a Fellow of the American Association for the Advancement of Science (AAAS) since 1968.

In 2001, they were awarded the US President's National Medal of Science for theoretical and experimental discoveries on the origin of species, genetic diversity, and population dynamics, along with their contributions to education, public understanding of science, and the philosophy and ethics of the scientific enterprise. This award was presented by President George W. Bush in 2002.

Best Publications

  • ENZYME VARIABILITY IN THE DROSOPHILA WILLISTONI GROUP. IV. GENIC VARIATION IN NATURAL POPULATIONS OF DROSOPHILA WILLISTONI

    Francisco J. Ayala;Jeffrey R. Powell;Martin L. Tracey;Celso A. Mourão

  • Global Models of Growth and Competition

    Michael E. Gilpin;Francisco J. Ayala

  • A clonal theory of parasitic protozoa: the population structures of Entamoeba, Giardia, Leishmania, Naegleria, Plasmodium, Trichomonas, and Trypanosoma and their medical and taxonomical consequences

    Michel Tibayrenc;Finn Kjellberg;Francisco J. Ayala

  • Pseudogenes: are they "junk" or functional DNA?

    Evgeniy S. Balakirev;Francisco J. Ayala

  • Evolutionary and geographical history of the Leishmania donovani complex with a revision of current taxonomy

    Julius Lukeš;Isabel L. Mauricio;Gabriele Schönian;Jean Claude Dujardin

  • Teleological Explanations in Evolutionary Biology

    Francisco J. Ayala

  • Studies in the Philosophy of Biology

    Francisco Jose Ayala;Theodosius Dobzhansky

  • Natural populations of Trypanosoma cruzi, the agent of Chagas disease, have a complex multiclonal structure

    Michel Tibayrenc;Philip Ward;Andres Moya;Francisco J. Ayala

  • Frequency-Dependent Selection

    Francisco J. Ayala;Cathryn A. Campbell

  • Chromosome speciation: Humans, Drosophila, and mosquitoes

    Francisco J. Ayala;Mario Coluzzi

  • Origin of the metazoan phyla: Molecular clocks confirm paleontological estimates

    Ayala Fj;Rzhetsky A

  • Are eukaryotic microorganisms clonal or sexual? A population genetics vantage.

    M Tibayrenc;F Kjellberg;J Arnaud;B Oury

  • Competition between species: theoretical models and experimental tests.

    Francisco J. Ayala;Michael E. Gilpin;Joan G. Ehrenfeld

  • Genetic characterization of six parasitic protozoa: parity between random-primer DNA typing and multilocus enzyme electrophoresis.

    Michel Tibayrenc;Katja Neubauer;Christian Barnabe;Francoise Guerrini

  • Phylogeny of the malarial genus Plasmodium, derived from rRNA gene sequences

    Ananias A. Escalante;Francisco J. Ayala

  • Nucleotide sequences provide evidence of genetic exchange among distantly related lineages of Trypanosoma cruzi

    Carlos A. Machado;Francisco J. Ayala

  • GENETIC DIFFERENTIATION DURING THE SPECIATION PROCESS IN DROSOPHILA.

    Francisco J. Ayala;Martin L. Tracey;Dennis Hedgecock;Rollin C. Richmond

  • Allozymes as Diagnostic Characters of Sibling Species of Drosophila

    Francisco J. Ayala;Jeffrey R. Powell

  • ISOZYME VARIABILITY IN TRYPANOSOMA CRUZI, THE AGENT OF CHAGAS' DISEASE: GENETICAL, TAXONOMICAL, AND EPIDEMIOLOGICAL SIGNIFICANCE.

    Michel Tibayrenc;Francisco J. Ayala

  • Evidence for positive selection in the superoxide dismutase (Sod) region of Drosophila melanogaster.

    Richard R. Hudson;Kevin Bailey;Douglas Skarecky;Jan Kwiatowski

  • Tempo and mode in evolution.

    W M Fitch;F J Ayala

  • Dynamics of Origination and Extinction in the Marine Fossil Record

    John C. Avise;Stephen P. Hubbell;Francisco J. Ayala

  • Homage to Linnaeus: How Many Parasites? How Many Hosts?

    John C. Avise;Stephen P. Hubbell;Francisco J. Ayala

  • Microbes on Mountainsides: Contrasting Elevational Patterns of Bacterial and Plant Diversity

    John C. Avise;Stephen P. Hubbell;Francisco J. Ayala

  • Ecological Extinction and Evolution in the Brave New Ocean

    John C. Avise;Stephen P. Hubbell;Francisco J. Ayala

Frequent Co-Authors

John C. Avise
John C. Avise University of California, Irvine
Michel Tibayrenc
Michel Tibayrenc Institut de Recherche pour le Développement
Stephen P. Hubbell
Stephen P. Hubbell University of California, Los Angeles
François Renaud
François Renaud University of Montpellier
James W. Valentine
James W. Valentine University of California, Berkeley
Andrés Moya
Andrés Moya University of Valencia
Walter M. Fitch
Walter M. Fitch University of California, Irvine
Laurence D. Mueller
Laurence D. Mueller University of California, Irvine
John F. McDonald
John F. McDonald Georgia Institute of Technology
Julius Lukeš
Julius Lukeš Czech Academy of Sciences

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students interested in Ecology and Evolution, pursuing related online degrees can greatly expand your career options. Fields like interdisciplinary studies, history, library science, and speech-language pathology offer flexible online programs with affordable tuition and financial support.

Many eco-focused students are considering an online interdisciplinary studies degree financial aid option to combine diverse scientific interests with real-world skills. Affordability is increasingly important, and you can find some of the most affordable online master’s in education that connect environmental studies with educational outreach and policy.

For those looking at research, information science, or museum work, researching the cost of mlis degree us is critical to making an informed decision. There are also opportunities in allied health: if you’re considering applying your communication skills toward clinical and educational settings, check out the asha accredited online slp programs for accredited, online options.

Each of these pathways offers unique skills and applications relevant to ecology, evolution, and beyond. Carefully compare tuition, flexibility, and accreditation to chart a course for your future.

Best Scientists Citing Francisco J. Ayala

Recently Published Articles