Article
Entomology
Koutaro Ould Maeno, Cyril Piou, Nicolas Lemenager
Summary: Phenotypic plasticity in body size in the desert locust, Schistocerca gregaria, is a result of developmental pathway modification. Large eggs have more yolk and space, leading to larger embryos compared to small eggs.
JOURNAL OF INSECT PHYSIOLOGY
(2023)
Article
Microbiology
Omer Lavy, Uri Gophna, Amir Ayali, Shalev Gihaz, Ayelet Fishman, Eran Gefen
Summary: The research provides evidence for the vertical transmission of locust gut bacteria through inoculation of the egg-pod's foam plug by females. Chitin and immunity-related proteins in the foam may inhibit harmful bacteria while promoting beneficial strains, contributing to the locust swarm's invasion and survival in new territories.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Fatma M. Hashem, Elsayed Elgazzar, Wageha A. Mostafa
Summary: This study investigates the ultrastructural changes in the fat body of fifth instar nymphs Schistocerca gregaria treated with zinc chromium oxide nanoparticles. The nanoparticles were prepared and characterized, and the optical measurements were conducted. The TEM images showed that the fat body was strongly impacted by the nanoparticles, resulting in chromatin agglomeration in the nucleus and malformed trachea in the haemoglobin cells.
Article
Ecology
Trenton C. Agrelius, Julia Altman, Jeffry L. Dudycha
Summary: The inheritance of epigenetic marks induced by environmental variation is widely accepted as a mediator of phenotypic plasticity, and transgenerational maternal effects have been found to influence morphology, gene expression, and life history in successive generations. However, there is a lack of research on the molecular mechanisms governing epigenetic functions in the context of ecologically relevant maternal effects.
Article
Genetics & Heredity
Lianfeng Zhao, Wei Guo, Feng Jiang, Jing He, Hongran Liu, Juan Song, Dan Yu, Le Kang
Summary: The study reveals that there are differences in egg production and egg size between gregarious and solitarious locusts, which are regulated by oosorption. The interaction between microRNA and the TGF beta ligand plays a crucial role in the process of locust oocyte death.
Article
Ecology
Arianne Marty, Timea Boeriis, Gerard Martinez-De Leon, Martin Holmstrup, Madhav P. Thakur
Summary: This study investigated the effects of temperature on reproductive investment in two Collembola species. The results showed that temperature had species-specific effects on egg size and egg numbers, and there was a trade-off between the two in colder temperature for F. candida. No such trade-offs were found in P. minuta. This highlights the importance of considering temperature effects on maternal investments in species-specific contexts.
EUROPEAN JOURNAL OF SOIL BIOLOGY
(2022)
Article
Biology
Samantha L. Bock, Matthew D. Hale, Thomas R. Rainwater, Philip M. Wilkinson, Benjamin B. Parrott
Summary: The study investigates the effects of thermal variation during incubation on fitness-related hatchling traits in American alligators. Results show that thermal fluctuations can lead to longer incubation durations and produce smaller hatchlings, while warmer incubation temperatures result in larger hatchlings with more residual yolk reserves, favoring the development of males.
BIOLOGICAL BULLETIN
(2021)
Article
Ecology
Juan Patino-Martinez, Jairson Veiga, Ines O. Afonso, Kate Yeoman, Jose Mangas-Vinuela, Gemma Charles
Summary: The study found that loggerhead turtles nest in different types of substrates, but the hatching success varies significantly. Substrates of volcanic origin with lower calcium carbonate content had the lowest hatching success, while light-colored substrates with higher calcium carbonate content produced more and larger offspring.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Multidisciplinary Sciences
Sakshi Sharda, Tobias Zuest, Matthias Erb, Barbara Taborsky
Summary: Research has shown that exposure of mothers to cues of their most dangerous natural predator during egg production can lead to offspring developing faster escape reflexes and exhibiting more risk averse behavior. This effect is mediated by differences in egg composition.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Review
Fisheries
Thassya C. dos Santos Schmidt, Doug E. Hay, Svein Sundby, Jennifer A. Devine, Guomundur J. Oskarsson, Aril Slotte, Mark J. Wuenschel, Dmitry Lajus, Arne Johannessen, Cindy J. G. van Damme, Rikke H. Bucholtz, Olav S. Kjesbu
Summary: The study extensively reviewed the life-history traits of Pacific and Atlantic herring populations, finding that body size of Pacific herring increased with latitude, while the pattern was inconsistent for Atlantic herring. Atlantic herring summer and autumn spawners produced many small eggs compared to spring spawners, aligning with findings from decades ago.
REVIEWS IN FISH BIOLOGY AND FISHERIES
(2021)
Article
Ecology
Alihan Katlav, Duong T. Nguyen, James M. Cook, Markus Riegler
Summary: In haplodiploid animals, females can face constraints in producing female offspring due to factors such as insemination failure or physiological limitations. Research on Pezothrips kellyanus revealed that constrained sex allocation occurs in small females producing smaller eggs, while large females producing larger eggs tend to have a female-biased sex ratio. This bimodal sex allocation pattern is correlated with maternal condition and may be related to an egg size-mediated fertilization mechanism in haplodiploids.
Article
Biotechnology & Applied Microbiology
Tetsumi Takahashi, Atsushi J. Nagano, Teiji Sota
Summary: The study used ddRAD sequencing to analyze a hybrid cross of different morphs of Telmatochromis temporalis, identifying one significant and five suggestive QTL for body size. The results suggest that multiple genes, rather than a single gene, control morph-specific body size, providing insights into the genetic basis underlying the evolution of body size during ecological speciation.
Article
Ecology
Justin W. Baldwin, Joan Garcia-Porta, Carlos A. Botero
Summary: Anthropogenic climate change is threatening biodiversity worldwide, but avian responses are influenced by behavioral flexibility and relative brain size, with species having larger brains showing weaker responses to climate warming.
Article
Agriculture, Dairy & Animal Science
Kun Guo, Xiang-Mo Li, Yan-Qing Wu, Yan-Fu Qu, Xiang Ji
Summary: The study of female reproductive traits of the red-banded wolf snake (Lycodon rufozonatus) in Zhejiang, East China over four years showed that postpartum body mass, clutch mass, and egg size were significantly greater in 2010 compared to other years, after accounting for female size. Contrary to traditional views, females did not trade off egg size against number.
Article
Entomology
Kimberly Ador, Januarius Gobilik, Suzan Benedick
Summary: The aim of this study was to investigate whether individuals of T. laeviceps s.l. worker bees grouped based on similar morphological characteristics also have similar COI haplotype cluster groupings. Specimens were classified based on important morphological characteristics for distinguishing the four groups within T. laeviceps s.l. PCA and LDA biplots revealed that the most distinctive features distinguishing Group 1 from other groups were the yellowish-brown antennae scape (ASC) and the dark brown thorax color (TC). Phylogenetic analysis showed clear separation for 12 out of 36 haplotypes, while the remaining haplotypes did not show clear differentiation between subclades regardless of their morphology and morphometric characteristics. Thus, DNA barcoding combined with traditional morphological grouping methods can reliably determine intraspecific variations within T. laeviceps s.l.
Article
Entomology
Sory Cisse, Said Ghaout, Ahmed Mazih, Helene Jourdan-Pineau, Koutaro Ould Maeno, Cyril Piou
ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
(2015)
Article
Multidisciplinary Sciences
Koutaro Ould Maeno, Sidi Ould Ely, Satoshi Nakamura, Khemais Abdellaoui, Sory Cisse, Mohamed El Hacen Jaavar, Sid'Ahmed Ould Mohamed, Mohamed Atheimine, Mohamed Abdallahi Ould Babah
Article
Entomology
K. O. Maeno, S. Nakamura, M. A. O. Babah
AFRICAN ENTOMOLOGY
(2014)
Article
Agriculture, Multidisciplinary
Koutaro Ould Maeno, Cyril Piou, Sidi Ould Ely, Sid'Ahmed Ould Mohamed, Mohamed El Hacen Jaavar, Mohamed Abdallahi Ould Babah, Satoshi Nakamura
JARQ-JAPAN AGRICULTURAL RESEARCH QUARTERLY
(2012)
Article
Ecology
Koutaro Ould Maeno, Sidi Ould Ely, Sid'Ahmed Ould Mohamed, Mohamed El Hacen Jaavar, Satoshi Nakamura, Mohamed Abdallahi Ould Babah Ebbe
JOURNAL OF ARID ENVIRONMENTS
(2018)
Article
Entomology
Koutaro Ould Maeno, Cyril Piou, Sidi Ould Ely, Mohamed Abdallahi Ould Babah, Benjamin Pelissie, Sid'Ahmed Ould Mohamed, Mohamed E. L. Hacen Jaavar, Mohamed Etheimine, Satoshi Nakamura
JOURNAL OF INSECT BEHAVIOR
(2013)
Article
Physiology
Koutaro O. Maeno, Cyril Piou, Mohamed A. Ould Babah, Satoshi Nakamura
FRONTIERS IN PHYSIOLOGY
(2013)
Article
Entomology
Koutaro Ould Maeno, Mohamed Abdallahi Ould Babah Ebbe
Article
Psychology, Biological
Koutaro Ould Maeno, Sidi Ould Ely, Sid'Ahmed Ould Mohamed, Mohamed El Hacen Jaavar, Satoshi Nakamura, Mohamed Abdallahi Ould Babah Ebbe
Article
Entomology
Koutaro Ould Maeno, Cyril Piou, Said Ghaout
JOURNAL OF INSECT PHYSIOLOGY
(2020)
Article
Agronomy
Koutaro Ould Maeno, Sidi Ould Ely, Sid'Ahmed Ould Mohamed, Mohamed El Hacen Jaavar, Mohamed Abdallahi Ould Babah Ebbe
Article
Agronomy
Allan T. Showler, Mohammed Abdallahi Ould Babah Ebbe, Michel Lecoq, Koutaro O. Maeno
Summary: Control of the desert locust involves three main approaches: reaction, proaction, and outbreak prevention, with the latter being the most effective and cost-efficient option.
Article
Entomology
Cyril Piou, Gustavo Zagaglia, Hector E. Medina, Eduardo Trumper, Ximena Rojo Brizuela, Koutaro Ould Maeno
Summary: This study investigates the thermoregulation behaviors of the South American locust, Schistocerca cancellata. It finds that the locusts engage in basking activities in the mornings to raise their body temperature, and they march when their body temperature is close to 40 degrees C. The locusts also exhibit behaviors such as jumping, stilting, shading, and perching on plants to avoid high ground temperatures. Feeding occurs throughout the day, and the locomotion speed and distance depend on the encountered vegetation. The behavioral patterns of S. cancellata are similar to those of the Desert locust in Africa.
JOURNAL OF INSECT PHYSIOLOGY
(2022)
Article
Entomology
Koutaro Ould Maeno, Cyril Piou, Said Ghaout
Summary: The desert locust shows a density-dependent reproductive trade-off by laying fewer but larger eggs in crowded conditions. The ovulation timing and oosorption rate are influenced by maternal density, and these modifications in physiology regulate the reproductive trade-off in the locust.
JOURNAL OF INSECT PHYSIOLOGY
(2022)
Article
Entomology
Jamila Dkhili, Koutaro Ould Maeno, Lalla Mina Idrissi Hassani, Said Ghaout, Cyril Piou
JOURNAL OF INSECT BEHAVIOR
(2019)