Results 41 to 50 of about 1,418,108 (311)

Annual variation of the biochemical composition, energy reserves and physiological indices in Mactra stultorum tissues from the Tunisian coasts

open access: yesHighlights in BioScience, 2020
The present study assessed the consequences of environmental changes on the biochemical quality and the physiological condition of the whole body and others organs Mactra stultorum collected from the north coast of Tunisia.
Imene Chetoui   +3 more
doaj   +1 more source

Effects of copper on non-specific immunity and antioxidant in the oriental river prawn (Macrobrachium nipponense)

open access: yesEcotoxicology and Environmental Safety, 2022
The copper, as heavy metal has important impacts on the antioxidant and immune defense systems in aquatic organisms, and the toxic effects of copper can be accumulated and magnified with the food chain, thus posing a threat to food safety as well as ...
Long Wang   +8 more
doaj   +1 more source

Photographing Aquatic Organisms

open access: yesThe American Biology Teacher, 1977
PHOTOGRAPHY OF AQUATIC organisms poses special problems-and rewards-to the biologist. Details of their structure, behavior and environment can be documented clearly. Yet water is a demanding medium to penetrate and to retain in place, and the interface between water and air refracts and reflects light, causing special problems to the photographer.
openaire   +1 more source

Safety Assessment of the Extract of Phycobiliproteins Derived From Arthrospira platensis: Acute Toxicity Studies in Pacific Oysters

open access: yesAquaculture Nutrition
Since shellfish farming has the potential to help feed a growing human population, it is crucial to anticipate new opportunities to improve the health of bivalves on farms and hatcheries.
T. A. Kukhareva   +6 more
doaj   +1 more source

Sustainable bioplastics manufacturing from renewable sources

open access: yesFEBS Open Bio, EarlyView.
Bioplastics are manufactured by using polymers from different bio‐based sources. These novel materials not only offer biodegradability but also possess various functional properties that make them suitable for diverse applications. Recent developments in the preparation of bioplastics are reported, highlighting the distinct properties of each type of ...
C. Valeria L. Giosafatto   +6 more
wiley   +1 more source

Assessment of the fish diet of the Caspian seal (Pusa caspica Gmelin, 1788) during haul out periods on island sites: results, challenges, and perspectives

open access: yesFrontiers in Marine Science
The Caspian seal (Pusa caspica), an endemic and endangered obligate piscivore of the Caspian Sea, faces threats to its existence, notably from the reduction of its food resources. Pollution, sea regression, overfishing, and the introduction of non-native
Mirgaliy Baimukanov   +4 more
doaj   +1 more source

Assessment of trace element accumulation on the Tunisian coasts using biochemical biomarkers in Perinereis cultrifera

open access: yesScientia Marina, 2021
Our study aimed to evaluate the effect of trace element pollution in the polychaete Perinereis cultrifera (Grube, 1840) from two Tunisian coasts (the port of Rades, S1; and the Punic port of Carthage, S2).
Marwa Bouhedi   +5 more
doaj   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

A Reassessment of Phylogenetic Relationships in Class Oligohymenophorea (Protista, Ciliophora) Based on Updated Multigene Data

open access: yesEcology and Evolution
Within the ciliate class Oligohymenophorea, many evolutionary relationships among taxa remain unresolved. This study incorporates 97 new sequences from 30 oligohymenophorean populations, including nuclear small subunit ribosomal (SSU‐rRNA) genes, nuclear
Bailin Li   +7 more
doaj   +1 more source

Associated fauna of the fan shell Pinna nobilis (Mollusca: Bivalvia) in the northern and eastern Tunisian coasts

open access: yesScientia Marina, 2009
Epifaunal communities associated with the fan shell Pinna nobilis Linnaeus, 1758 along the Tunisian coastline were investigated. Both univariate and multivariate analysis were done at different spatial scales within five populations located at different ...
Lotfi Rabaoui   +3 more
doaj   +1 more source

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