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Cytological, molecular and life cycle characterization of Anostracospora rigaudi n. g., n. sp. and Enterocytospora artemiae n. g., n. sp., two new microsporidian parasites infecting gut tissues of…
This study illustrates the usefulness of molecular approaches to study prevalent, but cryptic, infections involving microsporidian parasites of gut tissues and developed two species-specific molecular markers allowing each type of infection to be detected within 3–6 days post-inoculation.
Evidence for low‐level hybridization between two allochronic populations of the pine processionary moth, Thaumetopoea pityocampa (Lepidoptera: Notodontidae)
The ongoing gene flow detected between the ancestral and the emerging allochronic populations revealed an incomplete reproductive isolation, which must be taken into account and integrated with studies focussed on ecological drivers, so that a complete understanding of the ongoing speciation process might be achieved.
Flexibility Is Costly: Hidden Physiological Damage From Seasonal Phenotypic Transitions in Heterothermic Species
New perspectives to be considered when analyzing adaptation to seasonality, and a list of putative costs, including DNA damage, inflammatory response to fat load, brain and cognitive defects, digestive malfunction and immunodeficiency, that should receive more attention in future research on physiological seasonality are proposed.
State transitions: a major mortality risk for seasonal species.
- Julie Landes, M. Perret, I. Hardy, C. Camarda, P. Henry, S. Pavard
- Environmental ScienceEcology letters
- 8 June 2017
This work tested whether captive small primates exposed to an experimentally increased frequency of seasonal transitions die sooner than individuals living under natural seasonality, and demonstrated that physiological transitions between periods of high and low metabolic activity represent a major mortality risk for seasonal organisms.
Female reproduction bears no survival cost in captivity for gray mouse lemurs
- Julie Landes, P. Henry, I. Hardy, M. Perret, S. Pavard
- Biology, Environmental ScienceEcology and evolution
- 18 May 2019
Investigating the effects of current and past reproductive effort on later survival in captive females of a small primate, the gray mouse lemur, reminds us that reproduction is expected to be traded against body maintenance and the survival prospect only when resources are so limiting that they induce an allocation trade‐off.
Long-term prevalence data reveals spillover dynamics in a multi-host (Artemia), multi-parasite (Microsporidia) community.
Trophy hunting mediates sex-specific associations between early-life environmental conditions and adult mortality in bighorn sheep.
- Mathieu Douhard, M. Festa‐Bianchet, Julie Landes, F. Pelletier
- Environmental Science, BiologyThe Journal of animal ecology
- 1 May 2019
The results show that early conditions affect males and females differently because of trophy hunting, and highlight the importance of considering natural and anthropogenic environmental factors across different life stages to understand sex differences in mortality.
Do Early-Life Conditions Drive Variation in Senescence of Female Bighorn Sheep?
- Gabriel Pigeon, Julie Landes, M. Festa‐Bianchet, F. Pelletier
- Environmental ScienceFrontiers in Cell and Developmental Biology
- 20 May 2021
It is shown that early-life environmental conditions are important drivers of later survival and reproductive success and contribute to intra-specific variation in late-life fitness, but not aging patterns, which should be considered when studying the mechanisms of senescence.
An introduction to event history analyses for ecologists
The results show that event history analyses are useful to quantify the effect of factors on the emergence of events and foresee the use ofevent history analyses for ecological studies.
Offspring mass variation in tree swallows: A case of bet‐hedging?
The results suggest that intra-brood mass variation may not result from diversified bet-hedging, but rather from complex interactions between environmental, brood, and maternal characteristics.