Results 111 to 120 of about 89,073 (262)

El Niño-Driven Changes in Zooplankton Community Structure in an Amazonian Tropical Estuarine Ecosystem (Taperaçu, Northern Brazil)

Coasts
Given the high sensitivity of small estuaries to environmental changes, the present study aimed to investigate how climate-induced stressors—particularly rainfall and salinity—affect zooplankton community structure in the Amazonian Taperaçu estuary ...
Thaynara Raelly da Costa Silva, André Magalhães, Adria Davis Procópio, Marcela Pimentel de Andrade, Luci Cajueiro Carneiro Pereira, Rauquírio Marinho da Costa   +5 more
doaj   +1 more source

Exposure to Structurally Related Organophosphate Esters Elicits Distinct Metabolomic Perturbations in Daphnia magna

Environmental Toxicology, EarlyView.
ABSTRACT Organophosphate esters (OPEs) are found ubiquitously in the environment and exposure to these chemicals has induced behavioral, developmental, and morphological impairments in several model organisms. Yet there is still a lack of understanding of how sub‐lethal exposure disrupts organism function at the molecular‐level, especially for Daphnia ...
Salwa Hajir, Sanam Yousifie, Karl J. Jobst, André J. Simpson, Myrna J. Simpson   +4 more
wiley   +1 more source

Compromised DNA replication in gut cells underlies sensitivity to genotoxic stress in the tardigrade Hypsibius exemplaris

The FEBS Journal, EarlyView.
DNA damage in the tardigrade Hypsibius exemplaris elicits distinct cellular outcomes depending on replication status. While non‐replicating cells tolerate genotoxic stress, constitutively replicating cells undergo irreversible replication failure upon DNA damage, leading to loss of tissue homeostasis, fat depletion, sterility, and organismal death ...
Gonzalo Quiroga‐Artigas, Pauline Fontanié, Benjamin Lacroix, Maria Dolores Molina, María Moriel‐Carretero   +4 more
wiley   +1 more source

Motilitometer: A compact modular microscope for motility and photoresponse analysis of microorganisms

HardwareX
In biology, cell motility is a valuable indicator, revealing how cells sense their environment, adapt to stimuli, and reflect their physiological state.
Alain Gervasi, Lindsey Schutz, Pierre Cardol, Patrick E. Meyer   +3 more
doaj   +1 more source

Breaking the ice: multiple origins of ice‐binding/antifreeze proteins

The FEBS Journal, EarlyView.
Ice‐binding proteins (IBPs) evolved independently in many organisms during Cenozoic cooling and glaciation. In flounders, α‐helical IBPs evolved from an antiviral protein, while similar IBPs arose independently from different progenitors in three other fish lineages.
Laurie A. Graham, Peter L. Davies
wiley   +1 more source

Mesoscale Oceanographic Processes Drive the Seasonal Abundance of the Seabob Shrimp Xiphopenaeus spp. on the Eastern Brazilian Shelf

Fisheries Oceanography, EarlyView.
ABSTRACT The seabob shrimp (Xiphopenaeus spp.) is a primary fishery resource in Brazil, with considerable economic and social importance along the coast. While environmental drivers of its life cycle are well‐documented for southeastern and southern populations, the factors modulating populations in the Eastern Brazilian Shelf remain poorly understood,
Leandro Bonesi Rabelo, Júlio Neves de Araújo, Agnaldo Silva Martins   +2 more
wiley   +1 more source

A film of tuberose polysaccharide supports normal epidermal keratinization by suppressing cytokine release induced by external stimuli

International Journal of Cosmetic Science, EarlyView.
(a) Dry, rough skin has an immature stratum corneum prone to stimuli, triggering IL‐1α/IL‐1ra/IL‐8 release, keratinization defects, reduced ceramide NP/NS and lipids, scaling and poor hydration. (b) TPS forms a flexible reticular film, shielding the SC, lowering cytokines, normalizing differentiation, restoring lipids and improving texture and water ...
Junko Ishikawa, Yuka Yasuda
wiley   +1 more source

Control of ciliary transcriptional programs during spermatogenesis by antagonistic transcription factors

eLife
Existence of cilia in the last eukaryotic common ancestor raises a fundamental question in biology: how the transcriptional regulation of ciliogenesis has evolved?
Weihua Wang, Junqiao Xing, Xiqi Zhang, Hongni Liu, Xingyu Liu, Haochen Jiang, Cheng Xu, Xue Zhao, Zhangfeng Hu   +8 more
doaj   +1 more source

Embryonic and larval development of the endangered Chiapas killifish Tlaloc hildebrandi (Cyprinodontiformes: Profundulidae)

Journal of Fish Biology, EarlyView.
Abstract The early ontogeny of endemic freshwater fishes provides essential baseline biological information for conservation and management, particularly in species with restricted distributions and high vulnerability to habitat degradation, environmental change and population decline. This study presents the first detailed description of embryonic and
Rubén Alonso Contreras‐Tapia, Gabriela Garza‐Mouriño, María Elena Castellanos‐Páez, Marcela Ivonne Benítez‐Díaz Mirón, Jairo Arroyave, Alfonso Ángel González‐Díaz, Wilfredo A. Matamoros   +6 more
wiley   +1 more source

Advances in high‐resolution cryo‐volume electron microscopy (cvEM) imaging for unicellular and multicellular organisms

Journal of Microscopy, EarlyView.
Abstract Cryo‐Focused Ion Beam Scanning Electron Microscopy (cryoFIB‐SEM) using samples fixed by high‐pressure freezing uniquely enables high‐resolution cryo‐volume Electron Microscope (cvEM) images of cell ultrastructure to be obtained from whole cells and complex tissues in their near native state. As the freezing process also preserves fluorescence,
Maryna Kobylynska, Daniel Nicholls, Zoe Broad, Jack Wells, Alex Robinson, Stefania Marcotti, Damien McGrouther, Ch'ng Q‐L, Genoveva Esteban, Nigel Browning, Roland Fleck   +10 more
wiley   +1 more source