Simulated climate warming scenarios lead to earlier emergence and increased weight loss but have no effect on overwintering survival in solitary bees DOI Creative Commons
Jannik S. Möllmann,

Liv Lörchner,

Dorothee Hodapp

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Окт. 21, 2024

Abstract Insect pollination is critical for both wildflower stability and agricultural yields, with solitary bees being a group of pollinators fundamental importance. However, documented declines in populations, exacerbated by environmental pressures, including climate change, pose significant threats to the provision ecosystem services. Exposure elevated temperatures during periods dormancy, such as overwintering, predicted lead phenological shifts, changes condition, impacts on survival. we currently lack studies that inform how aspects are affected future change scenarios. Using simulated temperature regimes informed predictions Intergovernmental Panel Climate Change, exposed overwintering mason ( Osmia species) three field-relevant profiles based either present-day or under two major warming scenarios (SSP2-4.5 SSP5-8.5) measured exposure emergence timing, weight loss We found intermediate worst-case led earlier approximately six weeks, respectively, increasing divergences timing between sexes bicornis , which may intraspecific mismatches. While no effect survival rates, observed increased prior but contrast other studies, it only mildly mediated shifts brought about exposure, suggesting unlikely play role trigger bees. Our study contributes growing literature highlighting impact models will have key life events essential pollinators, consequences at population community levels.

Язык: Английский

The integral role of de novo lipogenesis in the preparation for seasonal dormancy DOI Creative Commons
Doğa Cedden, Gözde Güney, Umut Toprak

и другие.

Proceedings of the National Academy of Sciences, Год журнала: 2024, Номер 121(29)

Опубликована: Июль 11, 2024

Animals can alter their body compositions in anticipation of dormancy to endure seasons with limited food availability. Accumulation lipid reserves, mostly the form triglycerides (TAGs), is observed during preparation for diverse animals, including insects (diapause) and mammals (hibernation). However, mechanisms involved regulation accumulation ecological consequences failure accumulate adequate stores animal remain understudied. In broadest sense, reserves be accumulated two ways: either receives lipids directly from environment or converts sugars amino acids present fatty through de novo lipogenesis then TAGs. Here, we show that diapause Colorado potato beetle ( Leptinotarsa decemlineata ) involves orchestrated upregulation genes metabolism a transcript peak 8- 10-d-old diapause-destined insects. Regulation at abundance level was associated substantial fat stores. Furthermore, knockdown enzymes ACCase FAS-1 prolonged preparatory phase, while acid transportation shortened phase. Our findings suggest model which dynamically decide when transition phase into diapause, depending on progress lipogenesis.

Язык: Английский

Процитировано

12

Metabolic hormones are integral regulators of female reproductive health and function DOI Open Access

Faria Athar,

M. Karmani, Nicole M. Templeman

и другие.

Bioscience Reports, Год журнала: 2023, Номер 44(1)

Опубликована: Дек. 22, 2023

The female reproductive system is strongly influenced by nutrition and energy balance. It well known that food restriction or depletion can induce suppression of processes, while overnutrition associated with dysfunction. However, the intricate mechanisms through which nutritional inputs metabolic health are integrated into coordination reproduction still being defined. In this review, we describe evidence for essential contributions hormones responsive to intake fuel stores. Key hormones-including insulin, incretins (glucose-dependent insulinotropic polypeptide glucagon-like peptide-1), growth hormone, ghrelin, leptin, adiponectin-signal throughout hypothalamic-pituitary-gonadal axis support suppress reproduction. We synthesize current knowledge on how these multifaceted interact brain, pituitary, ovaries regulate functioning system, incorporating in vitro vivo data from animal models humans. Metabolic involved orchestrating processes healthy states, but some also play a significant role pathophysiology treatment strategies disorders. Further understanding complex interrelationships between function has important implications improving women's overall.

Язык: Английский

Процитировано

20

A quantitative model of temperature-dependent diapause progression DOI Creative Commons
Loke von Schmalensee, Philip Süess, Kevin T. Roberts

и другие.

Proceedings of the National Academy of Sciences, Год журнала: 2024, Номер 121(36)

Опубликована: Авг. 28, 2024

Winter diapause in insects is commonly terminated through cold exposure, which, like vernalization plants, prevents development before spring arrives. Currently, quantitative understanding of the temperature dependence termination limited, likely because phenotypes are generally cryptic to human eyes. We introduce a methodology tackle this challenge. By consecutively moving butterfly pupae species Pieris napi from several different conditions 20 °C, we show that proceeds as temperature-dependent rate process, with maximal rates at relatively temperatures and low warm extremely temperatures. Further, resulting thermal reaction norm can predict P. timing under variable Last, once , subsequent follows typical performance curve, around 31 °C minimum 2 °C. The sequence these thermally distinct processes (diapause postdiapause development) facilitates synchronous eclosion nature; microclimates where progresses quickly do not promote fast development, allowing individuals warmer winter catch up, vice versa. unveiling one process among others promotes parsimonious, quantitative, predictive model, wherein functions both an adaptation against premature during fall for synchrony spring.

Язык: Английский

Процитировано

8

Trade-offs between Winter Survival and Reproduction in Female Insects DOI
Megan E. Meuti, Lydia R. Fyie,

Maria A. Fiorta

и другие.

Integrative and Comparative Biology, Год журнала: 2024, Номер unknown

Опубликована: Апрель 25, 2024

Synopsis In temperate environments, most species of insects enter an arrested state development, known as diapause, that enables them to survive the adverse environmental conditions associated with winter. Although diapause is restricted a single life stage within insects, there are examples overwinter in egg, larval, pupal, and adult stages. Here we offer targeted, non-systematic literature review examining how overwintering impacts subsequent reproduction female insects. Several factors, including lifestage at which overwinter, type energy investment strategy females use for breeding, elements winter environment, contributions from male can influence trade-offs face between survival post-diapause reproduction. Additionally, climate change urban light pollution higher temperatures cities, exacerbate or ameliorate faced by reproducing Better understanding not only enhances our underlying physiological mechanisms ecological processes governing reproduction, but also provides opportunities better manage insect pests and/or support beneficial

Язык: Английский

Процитировано

7

Seasonality of forest insects: why diapause matters DOI Creative Commons
Martin Schebeck, Philipp Lehmann, Mathieu Laparie

и другие.

Trends in Ecology & Evolution, Год журнала: 2024, Номер 39(8), С. 757 - 770

Опубликована: Май 22, 2024

Insects have major impacts on forest ecosystems, from herbivory and soil-nutrient cycling to killing trees at a large scale. Forest insects temperate, tropical, subtropical regions evolved strategies respond seasonality; for example, by entering diapause, mitigate adversity synchronize lifecycles with favorable periods. Here, we show that distinct functional groups of insects; is, canopy dwellers, trunk-associated species, soil/litter-inhabiting insects, express variety diapause strategies, but do not systematic differences in strategy depending group. Due the overall similarities can better estimate anthropogenic change insect populations and, consequently, key ecosystems.

Язык: Английский

Процитировано

7

Skyglow and especially direct streetlight pollution alter moth communities DOI
Evert Van de Schoot, Renate A. Wesselingh, Hans Van Dyck

и другие.

Environmental Pollution, Год журнала: 2025, Номер unknown, С. 126068 - 126068

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

1

Chilled, starved or frozen: insect mitochondrial adaptations to overcome the cold DOI
Jacqueline E. Lebenzon, Johannes Overgaard, Lisa Bjerregaard Jørgensen

и другие.

Current Opinion in Insect Science, Год журнала: 2023, Номер 58, С. 101076 - 101076

Опубликована: Июнь 16, 2023

Язык: Английский

Процитировано

14

The importance of fat accumulation and reserves for insect overwintering DOI
Thomas Enriquez, Bertanne Visser

Current Opinion in Insect Science, Год журнала: 2023, Номер 60, С. 101118 - 101118

Опубликована: Сен. 21, 2023

Язык: Английский

Процитировано

13

Endocrine and enzymatic shifts during insect diapause: a review of regulatory mechanisms DOI Creative Commons

Hamzeh Izadi

Frontiers in Physiology, Год журнала: 2025, Номер 16

Опубликована: Март 14, 2025

Insect diapause is a vital survival strategy that enables insects to enter state of suspended development, allowing them withstand unfavorable environmental conditions. During diapause, significantly lower their metabolic rate and build up energy reserves, which they gradually utilize throughout this period. The regulation involves complex interaction hormones enzymes. Juvenile (JHs) affect adults larvae differently; in adults, the absence JH typically triggers while larvae, presence encourages state. Ecdysteroids, regulate molting metamorphosis, are carefully controlled prevent premature development. Reduced signaling insulin-like peptides enhances stress resistance promotes storage. Several enzymes play crucial roles adjustments necessary for diapause. These include degradation JH, ecdysteroidogenic pathway, metabolism fatty acids, glycogen, cryoprotectants, responses. Understanding diapause's molecular biochemical mechanisms essential fundamental entomological research practical applications. Despite recent advances, many aspects regulation, especially interactions among hormonal pathways role enzymes, remain poorly understood. This review analyzes approximately 250 papers consolidate current knowledge on enzymatic It offers comprehensive overview key processes based studies suggests future directions fill gaps our understanding significant biological phenomenon. also lays groundwork enhancing pest control strategies ecological conservation by deepening mechanisms.

Язык: Английский

Процитировано

0

Lipid Metabolism in Diapause DOI
Umut Toprak, Nicholas M. Teets, Doğa Cedden

и другие.

Advances in experimental medicine and biology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0