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5S rRNA and Accompanying Proteins in Gonads: Powerful Markers to Identify Sex and Reproductive Endocrine Disruption in Fish
(ACS, 2012-06-22)
In anuran ovaries, 5S rDNA is regulated transcriptionally by transcription factor IIIA (TFIIIA), which upon transcription, binds 5S rRNA, forming 7S RNP. 5S rRNA can be stockpiled also in the form of 42S RNP bound to 42sp43. ...
Molecular markers of oocyte differentiation in European eel during hormonally induced oogenesis
(Elsevier, 2017-09-01)
Reproduction in captivity is a key study issue in Anguilla anguilla as a possible solution for its dwindling population. Understanding the mechanisms controlling the production of ribosomal building blocks during artificially ...
Baseline tissue concentrations of metal in aquatic oligochaetes: field and laboratory approaches.
(Elsevier, 2017-02-04)
Metal tissue residue evaluation in benthic macroinvertebrates is an important component of an integrated approach to ecological risk assessment of metals and metalloids in the Nalón River basin (North Spain), where historic ...
DNA methylation epigenotypes in breast cancer molecular subtypes
(BioMed Central, 2010-09-29)
Introduction: Identification of gene expression-based breast cancer subtypes is considered a critical means of prognostication. Genetic mutations along with epigenetic alterations contribute to gene-expression changes ...
Transcription of ribogenesis genes in fish gonads: Applications in the identification of stages of oogenesis and in environmental monitoring of intersex condition
(Elsevier, 2017-06-13)
One of the best described effects of environmental xenoestrogens in fish is the generation of intersex gonads in males. Considering 5S rRNA a marker of the presence of oocytes, a 5S/18S rRNA index was calculated in 296 ...
Acute toxicity of zinc and arsenic to the warmwater aquatic oligochaete Branchiura sowerbyi as compared to its coldwater counterpart Tubifex tubifex (Annelida, Clitellata)
(Springer, 2016-07-12)
Purpose This study aimed at evaluating the acute effects of arsenic and zinc to the warmwater aquatic oligochaete Branchiura sowerbyi. Relative sensitivity with the coldwater species Tubifex tubifex was compared. Implications ...
Sediment toxicity and bioaccumulation assessment in abandoned Copper and Mercury mining areas of the Nalón River basin (Spain)
(Springer, 2014-11-06)
Sediment toxicity and metal bioaccumulation were assessed at sites affected by historical copper (Cu)
and mercury (Hg) mining activities in the Nalón River basin, Asturias, Spain. Toxicity assessment of stream sediments ...
Integrative taxonomy of the freshwater worm Rhyacodrilus falciformis s.l. (Clitellata: Naididae), with the description of a new species
(Wiley, 2013-08-21)
[ES] La variación genética y morfológica dentro de Rhyacodrilus falciformis Bretscher, 1901 (Clitellata: Naididae) en Europa se exploró utilizando un enfoque integrador, con tres marcadores genéticos no vinculados (la ...
Phylogenetic analysis of oligochaete Tubificinae (Annelida : Clitellata) based on mitochondrial sequence data
(CSIRO Publishing, 2011-11-18)
[ES]Se utilizaron secuencias parciales de los genes mitocondriales 16S rRNA y citocromo c oxidasa subunidad I (COI) (1) para resolver las relaciones internas de la subfamilia Tubificinae (Annelida: Clitellata) y (2) para ...