World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
85
Citations
38211
World Ranking
626
National Ranking
95

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Natural selection
  • Genetics

Geoff A. Parker spends much of his time researching Social psychology, Ecology, Sperm competition, Sperm and Evolutionary biology. His Social psychology research includes themes of Developmental psychology, Parental investment and Parent–offspring conflict. Geoff A. Parker combines subjects such as Microeconomics and Sex ratio with his study of Ecology.

In the subject of general Sperm competition, his work in Female sperm storage is often linked to Demography and Sperm heteromorphism, thereby combining diverse domains of study. His studies deal with areas such as Human fertilization and Reproductive success as well as Sperm. His work focuses on many connections between Evolutionary biology and other disciplines, such as Genetics, that overlap with his field of interest in Sexual dimorphism.

His most cited work include:

  • SPERM COMPETITION AND ITS EVOLUTIONARY CONSEQUENCES IN THE INSECTS (3054 citations)
  • Assessment strategy and the evolution of fighting behaviour. (1665 citations)
  • THE LOGIC OF ASYMMETRIC CONTESTS (1563 citations)

What are the main themes of his work throughout his whole career to date?

The scientist’s investigation covers issues in Ecology, Zoology, Sperm competition, Sperm and Sexual selection. His work carried out in the field of Ecology brings together such families of science as Life history theory and Human fertilization. Geoff A. Parker interconnects Fecundity, Avian clutch size, Reproduction and Predation in the investigation of issues within Zoology.

His Sperm competition study which covers Gonadosomatic Index that intersects with Gonad. His Sperm study combines topics in areas such as Statistics and Sperm Numbers. The Sexual conflict research Geoff A. Parker does as part of his general Sexual selection study is frequently linked to other disciplines of science, such as Anisogamy and Isogamy, therefore creating a link between diverse domains of science.

He most often published in these fields:

  • Ecology (45.33%)
  • Zoology (32.67%)
  • Sperm competition (28.00%)

What were the highlights of his more recent work (between 2009-2021)?

  • Ecology (45.33%)
  • Zoology (32.67%)
  • Sperm competition (28.00%)

In recent papers he was focusing on the following fields of study:

His primary areas of study are Ecology, Zoology, Sperm competition, Sexual selection and Anisogamy. His Mating, Host and Trophic level study in the realm of Ecology interacts with subjects such as Spermatophylax. As a part of the same scientific family, Geoff A. Parker mostly works in the field of Zoology, focusing on Reproduction and, on occasion, Competition, Sperm precedence, Sperm Numbers and Trade-off.

His Sperm competition study is associated with Sperm. His biological study spans a wide range of topics, including Reproductive success and Human fertilization. His research investigates the link between Sexual selection and topics such as Selection that cross with problems in Darwinism.

Between 2009 and 2021, his most popular works were:

  • Sperm competition and ejaculate economics. (416 citations)
  • Inclusive fitness theory and eusociality (280 citations)
  • Nuptial Feeding in Insects: Mating Effort versus Paternal Investment (166 citations)

In his most recent research, the most cited papers focused on:

  • Ecology
  • Natural selection
  • Genetics

His primary areas of investigation include Ecology, Sperm competition, Mating, Sexual selection and Sperm. He integrates Ecology and Spermatophylax in his studies. His research combines Internal fertilization and Sperm competition.

His Sexual selection course of study focuses on Selection and Reproductive success, Developmental psychology, Sex characteristics, Microeconomics and Female sperm. His study explores the link between Sperm and topics such as Reproduction that cross with problems in Sperm precedence, Sperm Numbers and Trade-off. The concepts of his Zoology study are interwoven with issues in Competition and Human fertilization.

Best Publications

  • SPERM COMPETITION AND ITS EVOLUTIONARY CONSEQUENCES IN THE INSECTS

    G. A. Parker

  • Assessment strategy and the evolution of fighting behaviour.

    G.A. Parker

  • THE LOGIC OF ASYMMETRIC CONTESTS

    John Maynard Smith;G.A. Parker

  • Punishment in animal societies.

    T. H. Clutton-Brock;G. A. Parker

  • Sperm competition, male prudence and sperm-limited females

    Nina Wedell;Matthew J.G. Gage;Geoffrey A. Parker

  • Optimality theory in evolutionary biology

    G. A. Parker

  • Potential Reproductive Rates and the Operation of Sexual Selection

    T. H. Clutton-Brock;G. A. Parker

  • Sexual coercion in animal societies

    T.H. Clutton-Brock;G.A. Parker

  • Sexual conflict over mating and fertilization: an overview

    Geoff Parker

  • The origin and evolution of gamete dimorphism and the male-female phenomenon.

    G.A. Parker;R.R. Baker;V.G.F. Smith

  • Sperm competition and ejaculate economics.

    Geoff A. Parker;Tommaso Pizzari

  • Sperm competition in fishes: the evolution of testis size and ejaculate characteristics.

    P. Stockley;M. J. G. Gage;G. A. Parker;A. P. Møller

  • Sexual conflict and speciation

    G A Parker;L Partridge

  • Courtship Persistence and Female-Guarding as Male Time Investment Strategies

    G.A. Parker

  • OPTIMAL EGG SIZE AND CLUTCH SIZE: EFFECTS OF ENVIRONMENT AND MATERNAL PHENOTYPE

    Geoffrey A. Parker;Michael Begon

  • Spermatozoal traits and sperm competition in Atlantic salmon: relative sperm velocity is the primary determinant of fertilization success.

    Matthew J.G. Gage;Christopher P. Macfarlane;Sarah Yeates;Richard G. Ward

  • Role assessment, reserve strategy, and acquisition of information in asymmetric animal conflicts

    G. A. Parker;Daniel Ian Rubenstein

  • Inclusive fitness theory and eusociality

    Patrick Abbot;Jun Abe;John Alcock;Samuel Alizon

  • Ideal free distributions when individuals differ in competitive ability: phenotype-limited ideal free models

    G.A. Parker;W.J. Sutherland

  • Sperm competition games: a prospective analysis of risk assessment

    G. A. Parker;M. A. Ball;P. Stockley;M. J. G. Gage

Frequent Co-Authors

Leigh W. Simmons
Leigh W. Simmons University of Western Australia
Paula Stockley
Paula Stockley University of Liverpool
Nick J. Royle
Nick J. Royle University of Exeter
Tommaso Pizzari
Tommaso Pizzari University of Oxford
Tim R. Birkhead
Tim R. Birkhead University of Sheffield
Ian R. Hartley
Ian R. Hartley Lancaster University
Tim H. Clutton-Brock
Tim H. Clutton-Brock University of Cambridge
Scott Pitnick
Scott Pitnick Syracuse University
William J. Sutherland
William J. Sutherland University of Cambridge
Matthew J. G. Gage
Matthew J. G. Gage University of East Anglia

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