Results 71 to 80 of about 76,951 (232)

Hotter, faster, sicker? Warming shifts the cost of infection from individuals to populations

Journal of Animal Ecology, EarlyView.
This study examines how temperature alters disease impacts across biological scales in a host–pathogen system. We found infected hosts appear healthiest at warm temperatures, yet populations suffer most. This suggests climate warming may intensify disease impacts for populations in ways traditional individual‐level virulence metrics fail to predict ...
Nathan J. Butterworth, Kerri J. Moore, Matthew D. Hall   +2 more
wiley   +1 more source

O uso de biomarcadores para avaliar o impacto ambiental de contaminantes em rios Mediterrâneos [PDF]

, 2010
Doutoramento em BiologiaUm assunto que requer atenção é a avaliação ecológica da qualidade da água de ecossistemas de água doce. Uma abordagem que surge como promissora é a biomonitorização baseada em biomarcadores, porque pode avaliar a saúde dos ...
Damásio, Joana Bastos
core  

Resolving the infection process reveals striking differences in the contribution of environment, genetics and phylogeny to host-parasite interactions [PDF]

, 2011
Background Infection processes consist of a sequence of steps, each critical for the interaction between host and parasite. Studies of host-parasite interactions rarely take into account the fact that different steps might be influenced by different ...
Ebert, Dieter, Dieter Ebert, Ben-Ami, Frida, Laforsch Christian, Duneau David, Ebert Dieter, David Duneau, Laforsch, C., Luijckx Pepijn, Duneau, David, Luijckx, P., Ben-Ami, F., Luijckx, Pepijn, Frida Ben-Ami, Pepijn Luijckx, Duneau, D., Ben-Ami Frida, Christian Laforsch, Laforsch, Christian   +18 more
core   +1 more source

The consequences of host heterogeneity for parasite transmission depend on how host infectiousness is determined

Journal of Animal Ecology, EarlyView.
This study proposes two contrasting scenarios for how host infectiousness is determined: recipient dependence and donor dependence. These scenarios fundamentally alter how host heterogeneity shapes parasite transmission, demonstrating that the process by which infectiousness is determined is crucial for understanding the consequences of host ...
Jacob A. Cohen, Andrew D. Dean, Mark Viney, Andy Fenton   +3 more
wiley   +1 more source

Effects of Short-term Low Intensity Laser and Ultraviolet Radiation on Embryos of Daphnia Magna [PDF]

Журнал Сибирского федерального университета: Серия Биология, 2011
Short-term impact of the low intensity electromagnetic radiation on in vitro growing Daphnia magna Straus embryos was studied. Embryos were exposed to laser radiation (633 nm, 0.05 mW/cm2) and ultraviolet radiation (365 nm, 0.16 mW/cm2) separately as ...
Elena A. Osipova, Viacheslav V. Krylov, Vladimir I. Yusupov, Nina B. Simonova   +3 more
doaj  

Comparative Molecular Insights into Developmental and Behavioral Toxicity Induced by Octocrylene and Ethylhexyl Salicylate Exposure on Zebrafish

Integrative Zoology, EarlyView.
This study compared the ecological toxicity of organic ultraviolet filters, octocrylene (OC) and ethylhexyl salicylate (EHS), on zebrafish embryos and larvae. EHS exhibited higher acute toxicity, causing increased mortality, hypoactive behavior at 50 mg/L, and disruptions in lipid homeostasis, while OC primarily affected hypoxia response and ...
Xiaoyang Lu, Li Sun, Jiao Chen, Jing Wang, Miao Guan, Shixia Xu   +5 more
wiley   +1 more source

Avaliação toxicológica de nanopartículas de óxido de cromo (III) em microcrustáceo Daphnia magna, bactéria Aliivibrio fischeri e semente de Lactuca sativa [PDF]

, 2014
TCC(graduação) - Universidade Federal de Santa Catarina. Centro Tecnológico. Engenharia Sanitária e Ambiental.A nanotecnologia é um ramo da ciência que desenvolve materiais em escala nanométrica. Entre esses materiais, destacam-se as nanopartículas.
Puerari, Rodrigo Costa
core  

Quantitative analysis of cholinesterase from Daphnia magna by indirect and non-competitive enzyme-linked immunosorbent assay

浙江大学学报. 农业与生命科学版, 2012
Polyclonal anti-serum of cholinesterase with dilution ratio of 1∶8 000 was obtained by immunizing BALB/c mice with purified cholinesterase (ChE) from Daphnia magna.
LIU Hong-cui, YANG Yan-xia, LI Shao-nan
doaj   +1 more source

Transcriptomics Unveil Dsx1 as a Critical Regulator in Sexual Dimorphism of Crustaceans

Integrative Zoology, EarlyView.
Sexually dimorphic traits are involved in reproductive competition and are shaped by sex‐biased gene expression. This study identifies Dsx1 as a key male‐biased gene in Morinoia aosen and demonstrates through RNA interference that its disruption feminizes male‐specific T3 leg structures.
Yan Tong, Wenpei Xin, Zeyu Liu, Yami Zheng, Mengyi Huang, Hongguang Liu, Decai Lu, Wei Peng, Zhonge Hou   +8 more
wiley   +1 more source

Low-Dose γ-Irradiation Affects the Survival of Exposed and their Offspring

Dose-Response, 2013
Purpose: To analyze the long-term effects of exposure to low-dose γ-irradiation on survival and life span in directly irradiated Daphnia magna and their offspring.
Elena I. Sarapultseva, Anton I. Gorski
doaj   +1 more source