Article
Ecology
Ronald Lee, C. Y. Cyrus Chu
Summary: Age patterns of female reproduction vary widely among iteroparous animal species with determinate growth. Often fertility declines with age, but in other cases, it may be flat or rise across age. In this article, we discuss theories that may provide some insights into how these diverse patterns might evolve.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Ecology
David M. Delaney, Luke A. Hoekstra, Fredric J. Janzen
Summary: This study on painted turtles' nesting ecology indicates that while RRV is high in early life and slowly decreases, age is a better predictor of risky behavior, possibly due to stronger correlates of age such as size influencing behavior in turtles.
AMERICAN NATURALIST
(2021)
Article
Ecology
Joseph C. Waddell, William G. R. Crampton
Summary: The study investigates the terminal investment hypothesis in five sympatric species of the electric knifefish genus Brachyhypopomus. It finds that terminal investment is synchronized by seasonal breeding and is influenced by circannual environmental variation in mortality risk.
ECOLOGICAL MONOGRAPHS
(2022)
Article
Ecology
Andres Valenzuela-Sanchez, Claudio Azat, Andrew A. Cunningham, Soledad Delgado, Leonardo D. Bacigalupe, Jaime Beltrand, Jose M. Serrano, Hugo Sentenac, Natashja Haddow, Veronica Toledo, Benedikt R. Schmidt, Hugo Cayuela
Summary: The study indicates that compensatory recruitment in response to Bd infection is crucial for maintaining population survival. Populations with high Bd prevalence exhibited higher adult recruitment and male reproductive effort, while populations with low Bd prevalence showed lower recruitment and survival rates.
JOURNAL OF ANIMAL ECOLOGY
(2022)
Article
Behavioral Sciences
Chang S. Han, Gawon Yang
Summary: Reproductive aging patterns vary among individuals and are related to behavior, with virgin females showing significant quadratic reproductive aging patterns and those investing more in early reproduction experiencing a sharper decline in egg production in later life.
BEHAVIORAL ECOLOGY
(2021)
Article
Ecology
Dawn R. Barlow, Holger Klinck, Dimitri Ponirakis, Trevor A. Branch, Leigh G. Torres
Summary: Animal behavior is driven by the fundamental need to feed and reproduce, which can be inferred from the spatiotemporal variations in biological signals. This study investigated the environmental correlates of vocalizations in blue whales and found that D calls were associated with foraging effort, while song intensity showed a seasonal pattern aligned with the timing of conception. Furthermore, a marine heatwave resulted in reduced foraging and lower reproductive effort in blue whales.
ECOLOGY AND EVOLUTION
(2023)
Article
Environmental Sciences
Jonas Mueller, Thassya C. dos Santos C. Schmidt, Gaute Wilhelmsen Seljestad, Catriona Clemmesen, Joachim Paul Groger, Florian Berg
Summary: Atlantic herring has a complex population structure and displays various reproductive strategies. Mixing between spring and autumn spawning herring occurs on the spawning ground, with differences in reproductive traits observed. The high variability in reproductive investment within spring spawners suggests the co-occurrence of groups with different behaviors.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Zoology
Natia Barateli, David Tarkhnishvili, Giorgi Iankoshvili, Luka Kokiashvili
Summary: This study compared the life history differences between small and large-bodied unisexual and bisexual Caucasian rock lizard species. The results showed that there were differences between the two parthenogenetic species and their paternal bisexual lizards. However, the pattern did not hold true for both lineages. Other interspecific differences such as body size or evolutionary distance also influenced the differences between the parthenogenetic and bisexual relatives.
ZOOLOGISCHER ANZEIGER
(2022)
Article
Multidisciplinary Sciences
Dustin J. Marshall, Michael Bode, Marc Mangel, Robert Arlinghaus, E. J. Dick
Summary: Research shows that the assumption of isometry in the management models of fisheries leads to an overestimation of the replenishment potential of exploited fish stocks, risking systematic overharvesting. By considering hyperallometric reproduction, management strategies could be optimized to increase yields and maintain target replenishment levels.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Multidisciplinary Sciences
Jesus E. Pizarro, Alejandro Laspiur, Juan C. Acosta, Graciela M. Blanco, Jorgelina M. Boretto
Summary: Studied reproductive traits of Phymaturus extrilidus lizards, including reproductive cycles, litter size, reproductive output, reproductive effort, etc. Found sexual dimorphism and a biennial reproductive cycle in females, with the highest reproductive output and effort compared to other Phymaturus species.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2022)
Article
Biology
Yong Zhi Foo, Malgorzata Lagisz, Rose E. O'Dea, Shinichi Nakagawa
Summary: Finding the balance between survival and reproduction is a central problem in life-history theory. The terminal investment hypothesis predicts that individuals facing a survival threat will increase immediate reproductive investment to maximize fitness. However, research on this hypothesis has yielded mixed results. In this study, a meta-analysis was conducted to examine reproductive investment in multicellular animals after an immune challenge. The results provided some support for the hypotheses, showing stronger terminal investment responses in older individuals with lower residual reproductive values, as well as an increase in variance, particularly in longer-living species.
Article
Ecology
Olivier Cotto, Maria R. Servedio, Troy Day
Summary: The strength of mate choice often varies with age, and this study investigates the evolution of choosiness and its potential impact on speciation. Using a population-genetic model, the researchers demonstrate that speciation can result in age-specific choosiness when mating traits are under divergent ecological selection. However, the evolution of age-specific choosiness does not significantly affect overall reproductive isolation.
Article
Ecology
Charly Jehan, Camille Sabarly, Thierry Rigaud, Yannick Moret
Summary: The study found that the age-specific reproductive behavior of female T. molitor under pathogenic threat is inconsistent with the terminal investment hypothesis, suggesting that females may use a reproductive restraint strategy to sustain immunity and future reproductive opportunities.
JOURNAL OF ANIMAL ECOLOGY
(2022)
Article
Psychology, Multidisciplinary
David S. Gordon
Summary: This study investigated the impact of COVID-19 and climate change on human survival and reproductive decision-making, finding that individuals who knew people affected by COVID-19 may lean towards having more children, while there was no clear relationship observed between beliefs about climate change and reproductive choices.
FRONTIERS IN PSYCHOLOGY
(2021)
Article
Biodiversity Conservation
Chelsea N. Miller, Monica Papes, Edward E. Schilling, Charles Kwit
Summary: The study found that reproductive traits play a significant role in explaining the difference between potential and occupied distributions within Trillium species. Flower type, ovule number, and seed mass were identified as key factors influencing these distribution differences.
DIVERSITY AND DISTRIBUTIONS
(2021)
