Results 111 to 120 of about 75,211 (286)

The planktonic food web in the Gulf of Naples based on the analysis of carbon and nitrogen stable isotope ratios

Marine Ecology, EarlyView., 2023
Abstract Plankton play a key role in marine food webs by producing and transferring organic matter and energy to higher trophic levels. To define the trophic structure and interactions within the planktonic communities in the Gulf of Naples, we determined carbon and nitrogen stable isotope ratios in particulate organic matter (POM, <20 μm ...
Louise Merquiol, Maria Grazia Mazzocchi, Isabella D'Ambra   +2 more
wiley   +1 more source

A STUDY ON THE PATHOGENESIS OF YOLK RETENTION IN BROILER CHICKS

Pakistan Veterinary Journal, 2002
The present project was designed to identify the factors responsible for yolk retention in broiler chicks. Four different experiments were conducted to find out the effect of four factors (experimental yolk sac infection with Echerichia coli, off-feed ...
Kashif Aziz Khan. Shakeel Akhtar Khan, Shahnaz Hamid2. Asim Aslam and Masood
doaj  

Development and Assessment of Fluorescent‐Dyed, Preserved Invasive Grass Carp (Ctenopharyngodon idella) Eggs as Surrogates for Live Eggs in Transport and Dispersal Control Experiments

River Research and Applications, Volume 42, Issue 5, Page 976-988, June 2026.
ABSTRACT Invasive species such as grass carp ( Ctenopharyngodon idella ) pose substantial ecological threats to North American freshwater ecosystems. Understanding their early life stage behavior is critical for management efforts. From spawning to hatching, invasive carp eggs must remain suspended in the water column while drifting downstream for the ...
Henry F. Doyle, Benjamin H. Stahlschmidt, Anne M. Herndon, Vindhyawasini Prasad, Amy E. George, Jesse R. Fischer, P. Ryan Jackson, Cory D. Suski, Rafael O. Tinoco   +8 more
wiley   +1 more source

Nanomaterials‐Decorated Biomass‐Derived Carbon for Overall Water Splitting: Interfacial Engineering, Mechanistic Insights, and Device Translation

The Chemical Record, EarlyView.
Biomass‐derived carbon provides a sustainable, porous, and conductive scaffold that stabilizes nanomaterials for bifunctional hydrogen evolution reaction/oxygen evolution reaction catalysis. This review summarizes design strategies (defects, heteroatom doping, heterostructures, single atoms), mechanistic/density functional theory insights, degradation ...
Paricha Jebin, Md. Rakib Khan, Syed Shaheen Shah, S. M Mostafa Kamal, Mst. Kaniz Subarna, Nipa Debnath, Md. Abdul Aziz, Bong‐Joong Kim, A. J. Saleh Ahammad   +8 more
wiley   +1 more source

The Effects of X-rays and Beta Rays (Tritium) on the Growth of \u3cem\u3eRickettsia mooseri\u3c/em\u3e and \u3cem\u3eRickettsia akari\u3c/em\u3e in Embryonate Eggs [PDF]

, 1960
The growth of Rickettsia mooseri was accelerated and quantitatively increased in embryonate eggs containing tritium oxide at levels of 180, 90, and 45 mc./egg during the growth period.
Greiff, Donald, Kisieleski, Walter E., Pinkerton, Henry, Powers, E. L.   +3 more
core   +1 more source

Antimicrobial Residues in a Key Cerrado River: Distribution, Persistence, and Effects on Zebrafish Embryo‐Larval Development

Environmental Toxicology, EarlyView.
ABSTRACT The current study aimed to quantify the antimicrobials amoxicillin (AMX), cefazolin (CFZ), chloramphenicol (CHL), metronidazole (MTZ), and sulfamethoxazole (SX) in effluents and surface water of an important Cerrado river, calculate their half‐lives, and analyze their ecotoxicity following single and combined exposures.
Náthala Maria Simão, Igor Romeiro dos Santos, Jerônimo Raimundo de Oliveira Neto, Flávio Olimpio Sanches Neto, Felipe Cirqueira Dias, Jéssyca Moreira Morais, Lorranny Pereira de Assis Valadares, Naiara Raica Lopes de Oliveira, Mirelle Garcia Silva Bailão, Luiz Carlos da Cunha, Valter Henrique Carvalho‐Silva, Thiago Lopes Rocha, Elisa Flávia Luiz Cardoso Bailão   +12 more
wiley   +1 more source

Interspecific Differences in the Effects on Embryos Between Freshwater and Marine Fish Exposed to Water‐Accommodated Fractions Derived From Very‐Low Sulfur Fuel Oil

Environmental Toxicology, EarlyView.
ABSTRACT This study evaluated the toxic effects of water‐accommodated fractions (WAFs) of very‐low sulfur fuel oil (VLSFO) on freshwater and marine fish embryos. Embryos of Japanese medaka (Oryzias latipes), Java medaka (Oryzias javanicus), and grass puffer (Takifugu alboplumbeus) were exposed to various concentrations of VLSFO‐WAF, and the effects on ...
Jumpei Matsuo, Shusaku Fukugami, Kei Nakayama, Masatoshi Yamasaki, Emiko Kokushi, Seiichi Uno   +5 more
wiley   +1 more source

FECT OF EXPERIMENT AL YOLK SAC INFECTION WITH STAPHYLOCOCCUS

Pakistan Veterinary Journal, 2003
The present project was carried out to study the effect of experimental yolk sac infection with Staphylocvccus aureus on immune status of broiler chicks. For this purpose, one hundred day-old chicks were divided into two groups A and B.
M. F. Rai, S. A. Khan, A. Aslam. K. Saeed, 1K. A. Khan and M. S. Shah
doaj  

Influence of Age and Exposure Pathway on Copper and Cadmium Mixture Toxicity: A Study on Daphnia magna

Environmental Toxicology, EarlyView.
ABSTRACT Metal contamination in aquatic ecosystems poses substantial risks to freshwater organisms, with mixture effects often deviating from predictions based on single‐metal toxicity. Understanding how age‐specific sensitivities and multiple exposure pathways influence mixture effects is critical for accurate risk assessment.
Sanah Majid, Karen Smeets, Mubiana K. Valentine, Ronny Blust   +3 more
wiley   +1 more source

The effects of temperature on hatching and survival of northern rock sole larvae (Lepidopsetta polyxystra) [PDF]

, 2011
Northern rock sole (Lepidopsetta polyxystra) is a commercially important flatfish in Alaska and was recently classified as a distinct species from southern rock sole (L. bilineata).
Blood, Deborah M., Lauel, Benjamin J.
core