Review
Biology
Liam R. Dougherty, Michael J. A. Skirrow, Michael D. Jennions, Leigh W. Simmons
Summary: In many animal species, males exhibit different alternative reproductive tactics (ARTs) in obtaining fertilisations, but there is little evidence that ARTs differ substantially in investment into sperm and ejaculates across species. The incongruence between theoretical predictions and empirical results could be explained by the failure of theoretical models to account for differences in overall resource levels between males exhibiting different ARTs, as well as the inaccurate measurement of sperm or ejaculate traits in reflecting overall post-mating investment or affecting fertilisation success.
BIOLOGICAL REVIEWS
(2022)
Article
Biology
Xiang-Yi Li, Andrew Morozov, Wolfgang Goymann
Summary: In socially monogamous species, females can potentially blackmail their social mates by using their within-pair offspring as 'hostages' to ensure continued care despite paternity loss. However, existing theoretical models fail to explain cases where cuckolded males continue to provide extensive care, due to assumptions about male detection accuracy and parental effort reduction. Further empirical tests are needed to validate theoretical predictions in species with alternative reproductive tactics.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Multidisciplinary Sciences
Jennifer A. M. Young, Sigal Balshine, David J. D. Earn
Summary: Observations of male alternative reproductive tactics have led to the development of mathematical models that explain the evolution and coexistence of multiple male phenotypes. These tactics can have significant impacts on population dynamics.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2023)
Article
Biology
Samuel J. Lymbery, Joseph L. Tomkins, Bruno A. Buzatto, David J. Hosken
Summary: This study investigated kin structure and its impact on alternative reproductive tactics in mites. Contrary to expectations, fighters were more common in full-sibling groups with higher body weights. This could be due to fighters being more common at low densities in this species, or it may indicate more intense competition among males with relatives.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Zoology
Julia A. A. Kunz, Guilhem J. J. Duvot, Alison M. M. Ashbury, Erik P. P. Willems, Brigitte Spillmann, Lynda P. P. Dunkel, Misdi bin Abdullah, Caroline Schuppli, Erin R. R. Vogel, Sri Suci Utami Atmoko, Maria A. A. van Noordwijk, Carel P. P. van Schaik
Summary: In many slowly developing mammal species, males reach sexual maturity before developing secondary sexual characteristics. Male orangutans have long periods of developmental arrest. Two male morphs have been associated with different mating tactics, and this study provides longitudinal and cross-sectional analyses to confirm and refine previous findings. The results show that unflanged males exhibit higher sociability and rates of copulation and sexual coercion, while flanged males have higher reproductive success. This suggests that unflanged males face a trade-off between competition and mating access, following a best-of-a-bad-job mating strategy.
AMERICAN JOURNAL OF PRIMATOLOGY
(2023)
Article
Ecology
Shingo Fujimoto, Kaori Tsurui-Sato, Naotaka Katsube, Haruki Tatsuta, Kazuki Tsuji
Summary: This study found that sexual conflict can lead to coercive mating, while sexual selection through consensual mate choice can cause divergence in mate recognition cues among species, leading to more accurate species recognition. Male guppies and mosquitofish showed imperfect species recognition, but accurate recognition disappeared when attempting coercive copulation. Heterospecific sexual interaction had little effect on the fecundity of gravid females, suggesting that prepregnancy interactions likely contribute to the exclusion of mosquitofish by guppies.
ECOLOGY AND EVOLUTION
(2021)
Article
Behavioral Sciences
Daniel Heimerl, Pavla Dudova, Karoline Wacker, Elisa Schenkel, Garance Despreaux, Cristina Tuni
Summary: When there are many competitors but few females available, male spiders change their mating tactics by producing more but lower quality food gifts. This allows them to secure matings while saving energy. The adult sex ratio can affect the intensity of sexual selection, and under intense competition, males may increase their investment in behaviors to outcompete rivals. However, in environments where males are more common, mating opportunities are rare, so males may reduce costly courtship and adopt alternative reproductive tactics.
BEHAVIORAL ECOLOGY
(2022)
Article
Behavioral Sciences
Kaitlin E. Barham, Cameron J. Baker, Craig E. Franklin, Hamish A. Campbell, Celine H. Frere, Terri R. Irwin, Ross G. Dwyer
Summary: In species with costly conflict, individuals use alternative movement tactics to minimize competitive interactions. This study investigated how the behavior of male estuarine crocodiles shifted over an 11-year period in relation to ontogeny, body condition, and physical injuries. Results showed that males sorted into different movement classes, with larger males maintaining confined territories, while smaller males adopted high movement or low movement tactics. Our study provides insights into the mechanisms and costs of movement tactics in wild crocodile populations.
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
(2023)
Article
Environmental Sciences
Kang Xiao, Xi Wang, Wen-Bin Liu, Ding-Dong Zhang, Xiang-Fei Li, Chun-Nuan Zhang, Wei-Hua Chen, Kenneth Prudence Abasubong, Guang-Zhen Jiang
Summary: In this study, the levels of serum corticosterone, cortisol, and glucose were measured to evaluate the responses of fish to seven common stressors. The results showed that corticosterone and cortisol exhibited different patterns of dynamic changes, and glucose levels were influenced by both hormones. Corticosterone seemed to respond to stress earlier than cortisol and together they regulated glucose levels to cope with stress.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Biology
Rachna B. Reddy, Kevin E. Langergraber, Aaron A. Sandel, Linda Vigilant, John C. Mitani
Summary: This study investigated adolescent and young adult male chimpanzees at Ngogo in Uganda, finding that socially immature adolescent males father offspring by mating with nulliparous females. Mating success was influenced by affiliative bonds and aggression, with male aggression towards females becoming more important as they aged, especially towards females with whom they shared affiliative bonds. These results parallel patterns of sexual coercion in humans, particularly within close affiliative relationships.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Environmental Sciences
Hemangini A. Dhaibar, Hemant Patadia, Tabassum Mansuri, Ritu Shah, Laxmichand Khatri, Hiral Makwana, Samip Master, Pushpa Robin
Summary: Exposure to hexachlorobenzene leads to hypothyroidism, affecting reproductive ability and growth in rats. Supplementing thyroxine can rescue reproductive abnormalities, highlighting the protective role of the thyroid in reproductive biology.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Pooja Singh, Michael Taborsky, Catherine L. Peichel, Christian Sturmbauer
Summary: Sexually antagonistic selection has a significant role in the evolution of sex chromosomes. In the shell-brooding cichlid fish, a sexually antagonistic trait, body size, is linked to a 2.4-Mb sex-linked region with candidate genes for body size and sex determination. This study provides evidence supporting the hypothesis that sexually antagonistic traits are linked to young sex chromosomes.
Article
Marine & Freshwater Biology
Yumeng Pang, Chih-Shin Chen, Tomohiko Kawamura, Yoko Iwata
Summary: This study investigates the flexibility of life-history traits in male squids displaying alternative reproductive tactics. The results show that body size, age, growth rate, and gonado-somatic energy allocation of consorts and sneakers in Uroteuthis edulis are influenced by seasonal and geographical factors. Moreover, the ratio of consorts to sneakers varies among different spawning groups and the flexibility of traits is higher in sneakers than in consorts.
Article
Behavioral Sciences
A. Cotza, L. Corlatti, F. Ferretti, O. Tomassini, J. Santoro, B. Bassano, S. Lovari
Summary: Based on the data collected on mating behavior and spatial behavior of 31 male Alpine chamois individuals during five rutting seasons, this study found that these individuals did not change their mating tactics during the study period, and there were different spatial behavior patterns among territorial males. Territorial males had more mating opportunities than nonterritorial ones, while there were no differences in age, body mass, and frequency of intrasexual aggressive interactions between males adopting different mating tactics.
Article
Ecology
Luca Corlatti, Antonella Cotza, Luca Nelli
Summary: This study investigated the seasonal habitat selection of territorial and nonterritorial Northern chamois males, finding significant differences in their habitat preferences throughout the year, particularly in the summer and autumn. Territorial males tended to occupy warmer, lower-elevation habitats with lower food quality during late spring and summer, while nonterritorial males were more flexible in following vegetation phenology and preferred temperatures.
ECOLOGY AND EVOLUTION
(2021)
Article
Genetics & Heredity
Derek M. Dean, Luana S. Maroja, Sarah Cottrill, Brent E. Bomkamp, Kathleen A. Westervelt, David L. Deitcher
G3-GENES GENOMES GENETICS
(2016)
Article
Neurosciences
Samantha L. Cavolo, Dinara Bulgari, David L. Deitcher, Edwin S. Levitan
JOURNAL OF NEUROSCIENCE
(2016)
Article
Cell Biology
Kavitha Rao, Michelle C. Stone, Alexis T. Weiner, Kyle W. Gheres, Chaoming Zhou, David L. Deitcher, Edwin S. Levitan, Melissa M. Rolls
MOLECULAR BIOLOGY OF THE CELL
(2016)
Article
Cell Biology
Dinara Bulgari, David L. Deitcher, Edwin S. Levitan
EUROPEAN JOURNAL OF CELL BIOLOGY
(2017)
Article
Biochemistry & Molecular Biology
Derek Dean, Hannah Weinstein, Seema Amin, Breelyn Karno, Emma McAvoy, Ronald Hoy, Andrew Recknagel, Casey Jarvis, David Deitcher
Article
Genetics & Heredity
Meghan Horne, Kaitlyn Krebushevski, Amelia Wells, Nahel Tunio, Casey Jarvis, Glen Francisco, Jane Geiss, Andrew Recknagel, David L. Deitcher
Article
Cell Biology
Juan Tao, Dinara Bulgari, David L. Deitcher, Edwin S. Levitan
JOURNAL OF CELL SCIENCE
(2017)
Editorial Material
Multidisciplinary Sciences
Ronald R. Hoy, David L. Deitcher
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2017)
Article
Genetics & Heredity
Meghan Horne, Kaitlyn Krebushevski, Amelia Wells, Nahel Tunio, Casey Jarvis, Glen Francisco, Jane Geiss, Andrew Recknagel, David L. Deitcher
Article
Multidisciplinary Sciences
Dinara Bulgari, Anupma Jha, David L. Deitcher, Edwin S. Levitan
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2018)
Article
Behavioral Sciences
Kristy J. Lawton, Taryn L. Wassmer, David L. Deitcher
BEHAVIOURAL BRAIN RESEARCH
(2014)
Article
Biology
Jason R. Gallant, Carl D. Hopkins, David L. Deitcher
JOURNAL OF EXPERIMENTAL BIOLOGY
(2012)
Article
Multidisciplinary Sciences
Dinara Bulgari, Chaoming Zhou, Randall S. Hewes, David L. Deitcher, Edwin S. Levitan
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2014)
Article
Cell Biology
Juan Tao, Dinara Bulgari, Drew A. Berkhoudt, Michael J. Calderon, Simon C. Watkins, Hector J. Fonseca Velez, Nadezhda Sabeva, David L. Deitcher, Edwin S. Levitan
JOURNAL OF CELL SCIENCE
(2019)
Article
Multidisciplinary Sciences
Dinara Bulgari, David L. Deitcher, Brigitte F. Schmidt, M. Alexandra Carpenter, Christopher Szent-Gyorgyi, Marcel P. Bruchez, Edwin S. Levitan
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2019)
Article
Endocrinology & Metabolism
Xiaomeng Li, Charles Brighton Ndandala, Qi Zhou, Chunyan Huang, Guangli Li, Huapu Chen
Summary: This study investigated the role of estrogen receptors (ERs) in vitellogenesis (Vtgs) regulation in pompano fish. The findings suggest that E2 may regulate the expression of different subtypes of vtg through ERs, displaying a compensatory expression effect on the regulation of ers and vtgs. This provides a theoretical basis for further research on reproductive endocrinology in pompano fish.
GENERAL AND COMPARATIVE ENDOCRINOLOGY
(2024)
Article
Endocrinology & Metabolism
Norio Kansaku, Takeshi Ohkubo
Summary: Endocrine changes during bird reproduction, particularly the relationship between prolactin and incubation behavior, were investigated. The study monitored the physiological status and incubation behavior of Silkie hens over 1-2 years. The results showed that most mature hens exhibited incubation behavior multiple times, and there was a noticeable increase in nest occupancy 7-10 days before incubation onset. Protein analysis revealed that secreted prolactin during the reproductive cycle contains various isoforms, suggesting post-translational modifications like glycosylation and phosphorylation.
GENERAL AND COMPARATIVE ENDOCRINOLOGY
(2024)
Article
Endocrinology & Metabolism
Minghui Li, Lina Sun, Linyan Zhou, Deshou Wang
Summary: This article summarizes the importance of the Nile tilapia as an excellent animal model for studying reproductive endocrinology in fish, with a focus on the crucial role of estrogen in female development.
GENERAL AND COMPARATIVE ENDOCRINOLOGY
(2024)
Article
Endocrinology & Metabolism
Breanna N. Harris, Carolyn M. Bauer, James A. Carr, Caitlin R. Gabor, Jennifer L. Grindstaff, Caleigh Guoynes, Jennifer J. Heppner, Cris C. Ledon-Rettig, Patricia C. Lopes, Sharon E. Lynn, Carla B. Madelaire, Lorin A. Neuman-Lee, Maria G. Palacios, Paul Soto, Jennifer Terry
Summary: The COVID-19 pandemic had a significant impact on academics, particularly on those with minoritized identities or who were early career, caregivers, or had intersecting identities. The pandemic altered the impact factors of academia, including scholarly products, and affected the way individuals could respond. It is predicted that the pandemic will have long-term impacts on the population dynamics, composition, and landscape of the academic ecosystem. The number of journal submissions decreased, especially among women authors, and the pandemic heavily impacted women authors from Asia and the Middle East.
GENERAL AND COMPARATIVE ENDOCRINOLOGY
(2024)