World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
54
Citations
10473
World Ranking
15639
National Ranking
6523

James J. Ireland publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where James J. Ireland sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 135 publications — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

James J. Ireland D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where James J. Ireland sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 54 D-Index — 22nd percentile

22% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

James J. Ireland is affiliated with Michigan State University in the United States. Their research primarily focuses on reproductive biology, particularly in livestock, and spans several interconnected fields of study including medicine, agricultural and biological sciences, and biochemistry, genetics, and molecular biology.

The scientist's work covers several main topics, such as:

  • Reproductive Biology and Fertility
  • Ovarian function and disorders
  • Reproductive Physiology in Livestock
  • Animal Genetics and Reproduction
  • Xenotransplantation and immune response
  • CRISPR and Genetic Engineering

Their subfields of study include:

  • Public Health, Environmental and Occupational Health
  • Reproductive Medicine
  • Agronomy and Crop Science
  • Genetics
  • Surgery

James J. Ireland has contributed several recent scientific papers to the journal Biology of Reproduction, a frequent publication venue for their work. Notable papers include:

  • "Negative impact of high doses of follicle-stimulating hormone during superovulation on the ovulatory follicle function in small ovarian reserve dairy heifers" (2020), published in Biology of Reproduction
  • "Excessive follicle-stimulating hormone during ovarian stimulation of cattle may induce premature luteinization of most ovulatory-size follicles" (2022), published in Biology of Reproduction
  • "Future of biomedical, agricultural, and biological systems research using domesticated animals" (2022), published in Biology of Reproduction

Collaborations are an important aspect of their research efforts, with frequent coauthors including Kaitlin R Karl, Zaramasina L Clark, Keith E. Latham, Fermin Jimenez-Krassel, and Emily Gibbings, contributing jointly to multiple publications.

Best Publications

  • Accuracy of Predicting Stages of Bovine Estrous Cycle by Gross Appearance of the Corpus Luteum

    James J. Ireland;R.L. Murphee;P.B. Coulson

  • Ovarian follicular development in the rat: hormone receptor regulation by estradiol follicle stimulating hormone and luteinizing hormone.

    J. S. Richards;J. J. Ireland;Mrinalini C. Rao;G. A. Bernath

  • Antral Follicle Count Reliably Predicts Number of Morphologically Healthy Oocytes and Follicles in Ovaries of Young Adult Cattle

    J.L.H. Ireland;D. Scheetz;F. Jimenez-Krassel;A.P.N. Themmen

  • Development of nonovulatory antral follicles in heifers: changes in steroids in follicular fluid and receptors for gonadotropins.

    J. J. Ireland;J. F. Roche

  • Numbers of Antral Follicles During Follicular Waves in Cattle: Evidence for High Variation Among Animals, Very High Repeatability in Individuals, and an Inverse Association with Serum Follicle-Stimulating Hormone Concentrations

    David S. Burns;Fermin Jimenez-Krassel;Janet L.H. Ireland;Phil G. Knight

  • Development of Antral Follicles in Cattle after Prostaglandin-Induced Luteolysis: Changes in Serum Hormones, Steroids in Follicular Fluid, and Gonadotropin Receptors*

    J. J. Ireland;J. F. Roche

  • Follicle numbers are highly repeatable within individual animals but are inversely correlated with FSH concentrations and the proportion of good-quality embryos after ovarian stimulation in cattle.

    J. J. Ireland;F. Ward;F. Jimenez-Krassel;J. L H Ireland

  • Does size matter in females? An overview of the impact of the high variation in the ovarian reserve on ovarian function and fertility, utility of anti-Müllerian hormone as a diagnostic marker for fertility and causes of variation in the ovarian reserve in cattle

    J J Ireland;G W Smith;D Scheetz;F Jimenez-Krassel

  • Control of follicular growth and development.

    Ireland Jj

  • Low numbers of ovarian follicles ≥3 mm in diameter are associated with low fertility in dairy cows

    F. Mossa;S.W. Walsh;S.T. Butler;D.P. Berry

  • Alterations in Intrafollicular Regulatory Factors and Apoptosis During Selection of Follicles in the First Follicular Wave of the Bovine Estrous Cycle

    E.J. Austin;M. Mihm;A.C.O. Evans;P.G. Knight

  • Maternal Undernutrition in Cows Impairs Ovarian and Cardiovascular Systems in Their Offspring

    Francesca Mossa;Fiona Carter;Siobhan W. Walsh;David A. Kenny

  • Historical Perspective of Turnover of Dominant Follicles During the Bovine Estrous Cycle: Key Concepts, Studies, Advancements, and Terms

    J.J. Ireland;M. Mihm;E. Austin;M.G. Diskin

  • Evidence that high variation in ovarian reserves of healthy young adults has a negative impact on the corpus luteum and endometrium during estrous cycles in cattle

    F. Jimenez-Krassel;J.K. Folger;J.L.H. Ireland;G.W. Smith

  • Identification of Novel Bovine Cumulus Cell Molecular Markers Predictive of Oocyte Competence: Functional and Diagnostic Implications

    Anilkumar Bettegowda;Osman V. Patel;Kyung Bon Lee;Ki Eun Park

  • Quantitative analysis of messenger RNA abundance for ribosomal protein L-15, cyclophilin-A, phosphoglycerokinase, β-glucuronidase, glyceraldehyde 3-phosphate dehydrogenase, β-actin, and histone H2A during bovine oocyte maturation and early embryogenesis in vitro

    AnilKumar Bettegowda;Osman V. Patel;James J. Ireland;George W. Smith

  • Identification of Potential Intrafollicular Factors Involved in Selection of Dominant Follicles in Heifers

    M. Mihm;E. J. Austin;T. E. M. Good;J. L. H. Ireland

  • Growth and differentiation of large antral follicles after spontaneous luteolysis in heifers: changes in concentration of hormones in follicular fluid and specific binding of gonadotropins to follicles.

    J. J. Ireland;J. F. Roche

  • Suppressed expression of genes involved in transcription and translation in in vitro compared with in vivo cultured bovine embryos.

    D. Corcoran;T. Fair;S. Park;D. Rizos

  • Gonadotropin dose is negatively correlated with live birth rate: analysis of more than 650,000 assisted reproductive technology cycles

    Valerie L. Baker;Morton B. Brown;Barbara Luke;George W. Smith

Frequent Co-Authors

Patrick Lonergan
Patrick Lonergan University College Dublin
James F. Roche
James F. Roche University College Dublin
Jianbo Yao
Jianbo Yao West Virginia University
Maurice P. Boland
Maurice P. Boland University College Dublin
Trudee Fair
Trudee Fair University College Dublin
Lawrence P. Reynolds
Lawrence P. Reynolds North Dakota State University
George E. Seidel
George E. Seidel Colorado State University
David A. Kenny
David A. Kenny Teagasc - The Irish Agriculture and Food Development Authority
Donagh P. Berry
Donagh P. Berry Teagasc - The Irish Agriculture and Food Development Authority
Keith E. Latham
Keith E. Latham Michigan State University

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