Results 41 to 50 of about 3,795,418 (278)

Ichthyofauna of Danube delta lakes [PDF]

open access: yesScientific Annals of the Danube Delta Institute, 2008
aspects of fish communities from Danube delta lakes are related in this work paper. The ichthyofauna from complexes lakes of Danube Delta was studied in 3 years (2003-2005), using twocomplementary methods of sampling: electric fishing and gillnet fishing.
NĂSTASE Aurel, NĂVODARU Ion
doaj  

Applications of eDNA Metabarcoding for Vertebrate Diversity Studies in Northern Colombian Water Bodies

open access: yesFrontiers in Ecology and Evolution, 2021
Environmental DNA metabarcoding is a tool with increasing use worldwide. The uses of such technology have been validated several times for diversity census, invasive species detection, and endangered/cryptic/elusive species detection and monitoring. With
Juan Diego Lozano Mojica   +1 more
doaj   +1 more source

Fish Commission research briefs. Vol. 4, no. 1

open access: yes
These short reports are intended to inform the public, industry, and other interested parties of the current studies of the Commission's staff and of the basis for conservation measures.
Oregon. Fish Commission
core   +6 more sources

Fish Biozonation in the Balkan Peninsula, Especially in Bulgaria: A Challenge

open access: yesFishes, 2023
Fish are important elements of aquatic ecosystems. Their communities naturally follow the river continuum and have been well described in the western European freshwater watersheds.
Apostolos Apostolou   +4 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Food Web Structure and Trophic Dynamics of a Fish Community in an Ephemeral Floodplain Lake

open access: yesFrontiers in Environmental Science, 2019
In Africa, wetlands, such as shallow, ephemeral lakes provide ecosystem services, such as water purification, food supply, and flood control but are subject to dynamic flooding/drying cycles which vary in duration from years to decades.
Richard A. Peel   +8 more
doaj   +1 more source

Proper environmental DNA metabarcoding data transformation reveals temporal stability of fish communities in a dendritic river system

open access: yesEnvironmental DNA, 2021
Protecting freshwater biodiversity is considered an ultimate challenge but depends on reliable surveys of species distribution and abundance which eDNA metabarcoding (environmental DNA metabarcoding) may offer.
Martin Laporte   +8 more
doaj   +1 more source

Microbial communities on fish eggs from Acanthopagrus schlegelii and Halichoeres nigrescens at the XuWen coral reef in the Gulf of Tonkin [PDF]

open access: yesPeerJ, 2020
Coral reefs are an important part of the ocean ecosystem and are a vital spawning ground for marine fish. Microorganisms are abundant in this environment and play a key role in the growth and development of host species.
Shijie Bai, Gang Hou
doaj   +2 more sources

Differential expression of cancer‐related genes supports prediction of poor response to first‐line treatments in T‐ALL pediatric patients with high minimal residual disease

open access: yesMolecular Oncology, EarlyView.
In the present work, we have identified a transcriptional signature based on the differential expression of six genes (BCL2&MAST4, HSH2D&LAT2, METRN&PITPNM2) that would facilitate the early detection of T‐cell acute lymphoblastic leukemia (T‐ALL) patients prone to a poor treatment response and could be implemented at diagnosis, along with other risk ...
Antonio Lahera   +11 more
wiley   +1 more source

Small-Scale Coastal Fishing Shapes the Structure of Shallow Rocky Reef Fish in the Aegean Sea

open access: yesFrontiers in Marine Science, 2019
Shallow rocky reef fish assemblages were studied in sites of low versus high fishing pressure (FP) across the Aegean Sea, in order to assess community structure at a large scale and investigate spatial variability in relation to FP, depth, and geographic
Maria Sini   +8 more
doaj   +1 more source

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