Search results for "Paràsits"
showing 9 items of 29 documents
Taxonomic revision of the Atlantic and Pacific species of Ligophorus (Monogenea, Dactylogyridae) from mullets (Teleostei, Mugilidae) with the proposa…
2013
A revision of the Atlantic and Pacific species of Ligophorus Euzet et Suriano, 1977 based on abundant newly sampled material from mugilids of the Mediterranean Sea, Sea of Japan and South China Sea, as well as available type and voucher specimens, is presented. All 35 nominal species of Ligophorus known from the Atlantic and the Pacific waters are treated. Of them, 30 are considered valid, one incertae sedis (L. leporinus), one species inquirendae (L. chongmingensis), two junior synonyms (L. euzeti and L. gussevi) and one is transferred to another genus. Three new species of Ligophorus are described: L. triangularis, L. miroshnichenki, and L. rectus. An amended diagnosis of Ligophorus is gi…
Study of helminth parasites in the red mullet, Mullus barbatus, from the Mediterranean Sea and acquired in greater València, Spain
2013
The red mullet, Mullus barbatus, is a fish of great commercial value with a wide distribution in the North Atlantic and the Mediterranean Sea. However, the helminthfauna of the red mullet in Spain has been poorly studied and the potential parasitological risk for humans due to this fish remains almost unknown. With the aim to provide more information on the helminth community of this fish, 100 specimens caught in the Mediterranean Sea between January and May 2012 and acquired at various supermarkets near the city of València (Spain) were analysed. Helminths were identified based on morphological criteria. 50.0% of the specimens were parasitized by at least one of the six helminth species id…
Prevalence and Risk of Anisakid Larvae in Fresh Fish Frequently Consumed in Spain: An Overview
2019
Anisakidosis is a fish-borne zoonosis caused by parasitic nematodes of the family Anisakidae, of which the species belonging to Anisakis simplex complex are the most representative. It is considered an emerging disease in Spain. The objective of this study is to analyse the presence of larvae in fish frequently consumed in Spanish supermarkets, inferring the risk of infection. In total 1,786 specimens of 9 different fish species, from two geographical origins (Atlantic and Mediterranean), acquired fresh and not eviscerated were examined for anisakid nematodes. Analysis showed that 33.7% of the samples were parasitized by Anisakis larvae. The horse mackerel (Trachurus trachurus) presented th…
Temari Parasitologia alimentària Grau en Nutrició Humana i Dietètica
2013
Presentacions de l´assignatura lliçó per lliçó L'assignatura Parasitologia alimentària (33950) és una matèria de caràcter obligatori de tercer curs del grau en Nutrició Humana i Dietètica, que s'imparteix en la Facultat de Farmàcia de la Universitat de València. En l'actual pla d'estudis disposa de 6 crèdits ECTS amb caràcter semestral. Les parasitosis, sobretot les intestinals, tenen un efecte negatiu sobre el desenvolupament cognitiu i físic de les persones que s'associen a manques nutricionals, especialment de ferro i vitamina A. El binomi paràsit-malnutrició és el més important, comú i persistent problema de salut dels països en desenvolupament. L'objectiu fonamental és mostrar als estu…
Guió teòric-pràctic Parasitologia alimentària grau CiTA
2013
L'assignatura comprèn una introducció general a la ciència de la parasitologia, s’emfatitza en aquells aspectes concernents a la parasitologia alimentària. S'estudien tots els paràsits capaços d'afectar a les persones i que apareixen com: contaminants d'aigües, fruites i verdures, així com d'altres aliments; propis de productes carnis, piscícoles i d'invertebrats que formen part habitual de la dieta humana; deteriorants de tota classe d'aliments. Higiene de personal (manipuladors alimentaris), productes i processos per a eliminar la capacitat infestant dels paràsits presents en els aliments. Pràctiques de laboratori: Diagnòstic i identificació de protozous i helmints contaminants d’aigües, …
The catalytic mechanism of glyceraldehyde 3-phosphate dehydrogenase from Trypanosoma cruzi elucidated via the QM/MM approach
2013
Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) has been identified as a key enzyme involved in glycolysis processes for energy production in the Trypanosoma cruzi parasite. This enzyme catalyses the oxidative phosphorylation of glyceraldehyde 3-phosphate (G3P) in the presence of inorganic phosphate (Pi) and nicotinamide adenosine dinucleotide (NAD+). The catalytic mechanism used by GAPDH has been intensively investigated. However, the individual roles of Pi and the C3 phosphate of G3P (Ps) sites, as well as some residues such as His194 in the catalytic mechanism, remain unclear. In this study, we have employed Molecular Dynamics (MD) simulations within hybrid quantum mechanical/molecular …
Are the helminth communities from unisexual and bisexual lizards different? Evidences from gastrointestinal parasites of Darevskia spp. in Turkey
2015
1Departament de Zoologia, Facultat de Ciencies Biologiques, Universitat de Valencia Dr. Moliner, 50, 46100 Burjassot, Spain; E-mail: vicente.roca@uv.es 2CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO Universidade do Porto, Campus Agrario de Vairao, Rua Padre Armando Quintas, 7. 4485–661 Vairao, Vila do Conde, Portugal; E-mail: carretero@cibio.up.pt 3Departamento de Biologia, Faculdade de Ciencias da Universidade do Porto R. Campo Alegre, s/n, 4169–007 Porto, Portugal; E-mail: fatima.esperanca@cibio.up.pt 4Department of Biology, Faculty of Science, Dokuz Eylul University, Buca, Izmir, Turkey E-mails: cetin.ilgaz@deu.edu.tr, yusuf.kumlutas@deu.edu.tr 5Department of Biology…
Influence of Environmental Pollution and Living Conditions on Parasite Transmission among Indigenous Ecuadorians
2022
The purpose of this study was to evaluate the influence of environmental pollution and the living conditions of indigenous Ecuadorians on the transmission of enteroparasites in an Andean agricultural area located at high altitude. Environmental pollution was recorded after observation in each community. The parasites were identified by microscopic sediment analysis using physiological saline solution from macerated arthropods, washed vegetables, and human stools, utilizing four coproparasitological techniques (direct examination, Kato–Katz, ether concentration, and Ziehl–Neelsen). The results show that the inadequate disposal of human and animal excreta that contaminate soil and…
Phenotypic Buffering in a Monogenean: Canalization and Developmental Stability in Shape and Size of the Haptoral Anchors of Ligophorus cephali (Monog…
2015
Phenotypic variation results from the balance between sources of variation and counteracting regulatory mechanisms. Canalization and developmental stability are two such mechanisms, acting at two different levels of regulation. The issue of whether or not they act concurrently as a common developmental buffering capacity has been subject to debate. We used geometric morphometrics to quantify the mechanisms that guarantee phenotypic constancy in the haptoral anchors of Ligophorus cephali. Canalization and developmental stability were appraised by estimating inter- and intra-individual variation, respectively, in size and shape of dorsal and ventral anchors. The latter variation was estimated…