Article
Ecology
Susumu Chiba, Aya Iwamoto, Seina Shimabukuro, Hiroyuki Matsumoto, Karin Inoue
Summary: Adult sex ratio (ASR) is crucial for population management, but its impact on population dynamics is still not well understood. This study investigated the effect of biased ASR on reproductive success in a decapod crustacean. The results showed that an increase in the proportion of males in mating groups led to a decrease in the number of eggs carried by females. This negative effect of ASR was observed at the population level when considering spawning success. Additionally, a male-biased ASR was found to reduce genetic diversity in the population. These findings highlight the importance of considering ASR in population management strategies.
JOURNAL OF ANIMAL ECOLOGY
(2023)
Article
Multidisciplinary Sciences
Ewan O. Flintham, Vincent Savolainen, Charles Mullon
Summary: Sexual conflict can arise when males evolve traits that harm females while improving their own mating success. This study shows that conflict is more intense in populations where individuals are in better condition, as condition-dependent expression of sexually selected traits readily evolves. This intensified conflict reduces mean fitness and can lead to a negative association between condition and population size. The coevolution of condition and sexual conflict can make the good genes effect detrimental to populations in the presence of male harm.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Ecology
Alihan Katlav, James M. Cook, Markus Riegler
Summary: The study found that larger eggs are more likely to be fertilized and develop into female offspring, while smaller eggs are more likely to remain unfertilized and become male offspring. Mating increases female investment in egg size, enhancing fertilization success and female offspring survival but reducing lifetime fecundity. This suggests a reproductive strategy favoring increased daughter production, potentially conflicting with the optimal offspring sex ratio.
FUNCTIONAL ECOLOGY
(2021)
Article
Biology
Eleanor Bath, Danielle Edmunds, Jessica Norman, Charlotte Atkins, Lucy Harper, Wayne G. Rostant, Tracey Chapman, Stuart Wigby, Jennifer C. Perry
Summary: This study demonstrates how aggression evolves in response to competitive environments in both sexes, with males fighting less in female-biased environments and increased aggression among mated females. There is evidence of a positive genetic correlation for aggression between males and females, suggesting a shared genetic basis.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Zoology
R. Dutta, T. S. Chechi, A. Yadav, N. G. Prasad
Summary: Alteration of sex ratio in populations can lead to sex-biased intrasexual and intersexual interactions, impacting the stability of CHC profiles. The competition within the abundant sex may influence sexual selection intensity, while the less abundant sex may have greater mating opportunities. Although sexually antagonistic coevolution may cause divergence in CHC profiles in male-biased populations, there is no evidence that this divergence is due to sexual conflict.
JOURNAL OF ZOOLOGY
(2022)
Article
Behavioral Sciences
Janusz Kloskowski
Summary: In monogamous birds, the maintenance of pair bond relies on previous breeding success and parental effort. Red-necked grebes, a long-lived species with parent-fed young, showed high pair fidelity regardless of recent breeding success. The study revealed that early brood abandonment by females may confer fitness benefits to males and reflect cooperation rather than conflict.
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
(2022)
Review
Ornithology
Tamas Szekely, Maria C. Carmona-Isunza, Noemie Engel, Naerhulan Halimubieke, William Jones, Vojtch Kubelka, Romy Rice, Claire E. Tanner, Zsofia Toth, Jose O. Valdebenito, Kees Wanders, Grant C. Mcdonald
Summary: Males and females exhibit different behaviors during mating, pairing and parenting, known as sex roles. Shorebirds, as an ecological model system, have played a key role in advancing research in avian ecology and behavioral biology. The study of shorebirds has also highlighted the significance of the social environment in driving sex role behaviors.
Article
Biochemistry & Molecular Biology
Thea F. Rogers, Daniela H. Palmer, Alison E. Wright
Summary: Research shows that sex-specific patterns of splicing are correlated with phenotypic sex differences and may offer an important route to sex-specific adaptation. Understanding the role of gene regulation in males and females is crucial for the evolution of phenotypic sexual dimorphism.
MOLECULAR BIOLOGY AND EVOLUTION
(2021)
Article
Environmental Sciences
Sherry Du, Rosalind L. Murray
Summary: De-icing road salt, necessary for safety in temperate freshwater systems, is found to be an emerging pollutant that may increase salt-tolerant mosquito populations and disease transmission in urban areas. This study found that road salt masculinizes the emergence sex ratios of mosquitoes and increases the proportion of males, potentially decreasing female mosquito success and reducing disease transmission in cities.
ENVIRONMENTAL POLLUTION
(2023)
Article
Biology
Julian Melgar, Mads F. Schou, Maud Bonato, Zanell Brand, Anel Engelbrecht, Schalk W. P. Cloete, Charlie K. Cornwallis
Summary: This study experimentally tested sex differences in cooperative breeding and their impact on group size variation in ostriches. The results showed that male optimal group size is influenced by competition costs, while female reproductive success is impacted by the benefits of cooperation with group members. Intermediate group sizes were found to be disadvantageous for both males and females.
Article
Multidisciplinary Sciences
Malin Ah-King
Summary: This article points out the gender bias in sexual selection research, both in the past and currently, with a focus on male-centered investigations. The author calls for the scientific community to recognize this bias and suggests strategies to alleviate it.
NATURE COMMUNICATIONS
(2022)
Article
Biology
Goran Arnqvist, Karl Grieshop, Cosima Hotzy, Johanna Ronn, Michal Polak, Locke Rowe
Summary: The study found that male genital spines in seed beetles have a direct negative impact on female fecundity, but females mating with males from long-spine lines produced more offspring, indicating the presence of indirect effects. Females adapt to male spines through evolutionary selection, influenced by multiple simultaneous processes that affect mating and fertilization biases.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Biology
Thomas J. Hitchcock, Andy Gardner
Summary: Recent research has focused on the role of kin selection in sexual conflict, investigating how demography influences the evolution of male harming genes in different parts of the genome. Different demographic parameters can drive conflicts between autosomes, sex chromosomes, and cytoplasmic genes, ultimately shaping patterns of sexual conflict.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Yiling Li, Deyan Wang, Weiwei Wang, Wenlu Yang, Jinwen Gao, Wenyan Zhang, Lanxing Shan, Minghui Kang, Yang Chen, Tao Ma
Summary: This study presents the chromosome-level genome assembly and annotation of a female P. qiongdaoensis, revealing the tropical adaptation and convergent evolution of P. qiongdaoensis with another tropical poplar. The study also identifies a ZW sex determination system in P. qiongdaoensis and suggests a cryptic sex turnover event in the section Populus.
Article
Multidisciplinary Sciences
Katrine K. Lund-Hansen, Colin Olito, Edward H. Morrow, Jessica K. Abbott
Summary: Antagonistic interactions between the sexes are important drivers of evolutionary divergence. When loci under interlocus sexual conflict are located on the sex chromosomes, it can lead to cycles of antagonistic coevolution between them and therefore between the sexes. Experimental crosses using Drosophila melanogaster showed that disrupting putatively coevolved sex chromosome pairs resulted in increased male reproductive success but also in lower offspring viability, with these sexually antagonistic fitness effects appearing to be resolved after 25 generations of experimental evolution. Population genetic models of antagonistic coevolution based on empirical results support the conclusion that antagonistic coevolution between the sex chromosomes is plausible and may drive genetic and phenotypic divergence between populations.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Ecology
R. Calsbeek, M. C. Duryea, D. Goedert, P. Bergeron, R. M. Cox
JOURNAL OF EVOLUTIONARY BIOLOGY
(2015)
Article
Ecology
Michael L. Logan, M. C. Duryea, Orsolya R. Molnar, Benji J. Kessler, Ryan Calsbeek
Editorial Material
Ecology
R. Calsbeek, M. A. McPeek
JOURNAL OF EVOLUTIONARY BIOLOGY
(2016)
Article
Ecology
Mary C. Duryea, Patrick Bergeron, Zachary Clare-Salzler, Ryan Calsbeek
ECOLOGY AND EVOLUTION
(2016)
Article
Ecology
Beth A. Reinke, Ryan Calsbeek, Devi Stuart-Fox
EVOLUTIONARY ECOLOGY
(2017)
Article
Zoology
Camille Bonneaud, Irem Sepil, Lena Wilfert, Ryan Calsbeek
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2017)
Editorial Material
Zoology
Shaun S. Killen, Ryan Calsbeek, Tony D. Williams
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2017)
Article
Zoology
Ryan Calsbeek, Debora Goedert
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2017)
Article
Biochemistry & Molecular Biology
Beth A. Reinke, Yasmeen Erritouni, Ryan Calsbeek
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2018)
Article
Behavioral Sciences
Ryan Calsbeek, M. C. Duryea, Elizabeth Parker, Robert M. Cox
BEHAVIORAL ECOLOGY
(2014)
Article
Ecology
Robert M. Cox, Ryan Calsbeek
FUNCTIONAL ECOLOGY
(2015)
Article
Ecology
Michael L. Logan, Sarah G. Fernandez, Ryan Calsbeek
FUNCTIONAL ECOLOGY
(2015)
Article
Biodiversity Conservation
Michael L. Logan, Ryan K. Huynh, Rachel A. Precious, Ryan G. Calsbeek
GLOBAL CHANGE BIOLOGY
(2013)
Article
Ecology
Robert M. Cox, Matthew B. Lovern, Ryan Calsbeek
JOURNAL OF ANIMAL ECOLOGY
(2014)
Article
Multidisciplinary Sciences
Michael L. Logan, Robert M. Cox, Ryan Calsbeek
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2014)