World's Best Scientists 2026 revealed!
Gregory I. Holwell

Gregory I. Holwell

D-Index & Metrics

Animal Science and Veterinary

D-Index
25
Citations
2133
World Ranking
2977
National Ranking
50

Gregory I. Holwell publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Gregory I. Holwell sits on this spectrum.

29–33 publications: 1 scientists 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29 publications 442+

This scientist: 119 publications — 38th percentile

38% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

Gregory I. Holwell D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Gregory I. Holwell sits on this spectrum.

20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 25 D-Index — 7th percentile

7% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

Overview

Gregory I. Holwell is affiliated with the University of Auckland in New Zealand and specializes primarily in Agricultural and Biological Sciences. Their research spans multiple subfields including Ecology, Evolution, Behavior and Systematics, Insect Science, Genetics, Sociology, and Political Science.

The scientist's work focuses on several main topics:

  • Animal Behavior and Reproduction
  • Plant and animal studies
  • Insect-Plant Interactions and Control
  • Insect and Arachnid Ecology and Behavior
  • Hemiptera Insect Studies
  • Evolutionary Game Theory and Cooperation
  • Animal Ecology and Behavior Studies

Frequent publication venues include:

  • Zenodo (CERN European Organization for Nuclear Research)
  • New Zealand Journal of Zoology
  • Austral Entomology
  • Animal Behaviour
  • Biological Journal of the Linnean Society

Gregory I. Holwell has coauthored numerous papers with several collaborators, most frequently with Gonzalo Avila, Thomas E. Saunders, Christina J. Painting, Nathan W. Burke, and Lee-Anne Manning.

Among recent papers, the following are notable for their diverse contributions to animal behavior and ecology:

  • Male coercion and female injury in a sexually cannibalistic mantis, 2021, published in Biology Letters
  • Defining an intrasexual male weapon polymorphism in a New Zealand harvestman (Opiliones: Neopilionidae) using traditional and geometric morphometrics, 2020, published in Biological Journal of the Linnean Society
  • Diet, predators, and defensive behaviors of New Zealand harvestmen (Opiliones: Neopilionidae), 2021, published in Journal of Arachnology
  • Integrating sterile insect technique with the release of sterile classical biocontrol agents for eradication: is the Kamikaze Wasp Technique feasible?, 2020, published in BioControl
  • Relatedness modulates density-dependent cannibalism rates in Drosophila, 2021, published in Functional Ecology

Holwell's research includes extensive interdisciplinary work involving evolutionary biology, insect and arachnid ecology, and behavioral studies. The publication record demonstrates engagement with both fundamental biology and applied aspects such as biocontrol methods.

Best Publications

  • Female praying mantids use sexual cannibalism as a foraging strategy to increase fecundity

    Katherine L. Barry;Gregory I. Holwell;Marie E. Herberstein

  • Intraspecific evidence from guppies for correlated patterns of male and female genital trait diversification

    Jonathan P. Evans;Clelia Gasparini;Gregory I. Holwell;Indar W. Ramnarine

  • Multimodal mate assessment by male praying mantids in a sexually cannibalistic mating system

    Katherine L. Barry;Gregory I. Holwell;Gregory I. Holwell;Marie E. Herberstein

  • Exaggerated Trait Allometry, Compensation and Trade-Offs in the New Zealand Giraffe Weevil (Lasiorhynchus barbicornis)

    Christina. J. Painting;Gregory I. Holwell

  • Genital shape correlates with sperm transfer success in the praying mantis Ciulfina klassi (Insecta: Mantodea)

    Gregory I. Holwell;Gregory I. Holwell;Claire Winnick;Tom Tregenza;Marie E. Herberstein

  • Muscle mass drives cost in sexually selected arthropod weapons.

    Devin M. O'Brien;Romain P. Boisseau;Meghan Duell;Erin McCullough

  • Male mating behaviour reduces the risk of sexual cannibalism in an Australian praying mantid

    Katherine L. Barry;Gregory I. Holwell;Gregory I. Holwell;Marie E. Herberstein

  • Multiple exaggerated weapon morphs: a novel form of male polymorphism in harvestmen.

    Christina J. Painting;Anna F. Probert;Daniel J. Townsend;Gregory I. Holwell

  • Chapter Seven - Scramble Competition Polygyny in Terrestrial Arthropods

    Marie E. Herberstein;Christina J. Painting;Gregory I. Holwell

  • Male coercion and female injury in a sexually cannibalistic mantis.

    Nathan W Burke;Gregory I Holwell

  • Exaggerated rostra as weapons and the competitive assessment strategy of male giraffe weevils

    Christina J. Painting;Gregory I. Holwell

  • Predatory pollinator deception: Does the orchid mantis resemble a model species?

    J.C. O’Hanlon;G. I. Holwell;M.E. Herberstein

  • Fatal attraction: sexually cannibalistic invaders attract naive native mantids

    Murray P. Fea;Margaret C. Stanley;Gregory I. Holwell

  • Internal reproductive anatomy of the praying mantid Ciulfina klassi (Mantodea: Liturgusidae).

    Claire G. Winnick;Gregory I. Holwell;Gregory I. Holwell;Marie E. Herberstein

  • A paternity advantage for speedy males? Sperm precedence patterns and female re-mating frequencies in a sexually cannibalistic praying mantid

    Katherine L. Barry;Gregory I. Holwell;Gregory I. Holwell;Marie E. Herberstein

  • Ferocious Fighting between Male Grasshoppers

    Kate D. L. Umbers;Kate D. L. Umbers;Nikolai J. Tatarnic;Nikolai J. Tatarnic;Gregory I. Holwell;Marie E. Herberstein

  • Geographic variation in genital morphology of Ciulfina praying mantids

    G. I. Holwell

  • Preference for habitats with low structural complexity in the praying mantid Ciulfina sp. (Mantidae)

    Phoebe J.B Hill;Greg I Holwell;Ann Göth;Marie E Herberstein

  • Chirally dimorphic male genitalia in praying mantids (Ciulfina: Liturgusidae)

    Gregory I. Holwell;Gregory I. Holwell;Marie E. Herberstein

  • Courtship and mating behaviour in the parasitoid wasp Cotesia urabae (Hymenoptera: Braconidae): mate location and the influence of competition and body size on male mating success.

    G A Avila;T M Withers;G I Holwell

  • First releases and monitoring of the biological control agent Cotesia urabae Austin and Allen (Hymenoptera: Braconidae)

    G. A. Avila;L. A. Berndt;G. I. Holwell

  • The Functional Significance of Chiral Genitalia: Patterns of Asymmetry, Functional Morphology and Mating Success in the Praying Mantis Ciulfina baldersoni.

    Gregory I. Holwell;Gregory I. Holwell;Olga Kazakova;Felicity Evans;James C. O’Hanlon

  • Male density influences mate searching speed and copulation duration in millipedes (Polydesmida: Gigantowales chisholmi )

    Gregory Holwell;Pjd Allen;F Goudie;PE Duckett

  • Perceived risk of sperm competition affects juvenile development and ejaculate expenditure in male praying mantids

    Louise E. Allen;Katherine L. Barry;Gregory I. Holwell;Marie E. Herberstein

  • Combat in a cave-dwelling wētā (Orthoptera: Rhaphidophoridae) with exaggerated weaponry

    Murray Fea;Gregory Holwell

  • Olfactory cues used in host‐habitat location and host location by the parasitoid Cotesia urabae

    G.A. Avila;T.M. Withers;G.I. Holwell

  • Spermatophore feeding and mating behaviour in praying mantids (Mantodea: Liturgusidae)

    G. I. Holwell

  • Flexible alternative mating tactics by New Zealand giraffe weevils

    Christina. J. Painting;Gregory I. Holwell

Frequent Co-Authors

Marie E. Herberstein
Marie E. Herberstein Macquarie University
Thomas R. Buckley
Thomas R. Buckley Landcare Research
Douglas J. Emlen
Douglas J. Emlen University of Montana
Norman Maclean
Norman Maclean University of Southampton
Arvind Varsani
Arvind Varsani Arizona State University
Glauco Machado
Glauco Machado Universidade de São Paulo
Philip J. Lester
Philip J. Lester Victoria University of Wellington
Trevor E. Pitcher
Trevor E. Pitcher University of Windsor
Indar W. Ramnarine
Indar W. Ramnarine University of the West Indies
Mark A. Elgar
Mark A. Elgar University of Melbourne

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