Search results for "ZOOLOGIA"

Diversity and taxonomy of the genus Unio Philipsson in Italy, with the designation of a neotype for Unio elongatulus C. Pfeiffer (Mollusca, Bivalvia,…

2019

Novel Unio spp. populations from Slovenia, the Italian peninsula, Sardinia and Sicily were genetically analysed in order to define the distribution and diversity of the genus Unio in Italy and neighbouring areas. The presence of two primarily allopatric autochtonous species, Unio elongatulus Pfeiffer, and Unio mancus Lamarck, is confirmed for the Italian peninsula, Corsica, Sardinia, and Sicily. Autochthonous populations of Unio elongatulus are present in the peri-Adriatic drainages of the Italian and Balkan peninsulas, south as far as the Ofanto River (Apulia, Italy) and Lake Skadar (Albania), while its presence in the Tyrrhenian rivers of Tuscany is likely due to anthropogenic introductio…

Food predictability determines space use of endangered vultures: implications for management of supplementary feeding.

2013

Understanding space use of free-living endangered animals is key to inform management decisions for conservation planning. Like most scavengers, vultures have evolved under a context of unpredictability of food resources (i.e. exploiting scattered carcasses that are intermittently available). However, the role of predictable sources of food in shaping spatial ecology of vultures has seldom been studied in detail. Here, we quantify the home range of the Egyptian vulture (Neophron percnopterus), a long-lived raptor which has experienced severe population decline throughout its range and is qualified as endangered worldwide. To this end six adults were tracked by satellite telemetry in Spain d…

Comparative WSSV infection routes in the shrimp genera Marsupenaeus and Palaemon.

2005

The role of natural science collections in the biomonitoring of environmental contaminants in apex predators in support of the EU’s zero pollution am…

2022

Movalli, Paola et al.

Salmo salar fish waste oil: Fatty acids composition and antibacterial activity

2020

Background and aims Fish by-products are generally used to produce fishmeal or fertilizers, with fish oil as a by-product. Despite their importance, fish wastes are still poorly explored and characterized and more studies are needed to reveal their potentiality. The goal of the present study was to qualitatively characterize and investigate the antimicrobial effects of the fish oil extracted from Salmo salar waste samples and to evaluate the potential use of these compounds for treating pathogen infections. Methods Salmo salar waste samples were divided in two groups: heads and soft tissues. Fatty acids composition, and in particular the content in saturated (SAFAs), mono-unsaturated (MUFA…

Apomorfina como emético para aves canoras insectívoras: efectividad, efectos post-liberación, sobrevivencia y cambio en masa corporal

2014

[EN] Emetics can be used to obtain food samples from birds, but they can harm birds during or after treatment. Studies to date suggest that apomorphine is a safe emetic for songbirds, but information is needed about possible post-release deleterious effects. From March to July 2012, we collected food samples from insectivorous songbirds using apomorphine. We treated 67 Moustached Warblers (Acrocephalus melanopogon), 56 Reed Warblers (Acrocephalus scirpaceus), 15 Great Reed Warblers (Acrocephalus arundinaceus), and 12 Savi's Warblers (Locustella luscinoides). Effectiveness in inducing regurgitation was high (76.7%) and varied among species, being significantly more effective with Reed Warble…

Standardization of sperm motility analysis by using CASA-Mot for Atlantic salmon (Salmo salar), European eel (Anguilla anguilla) and Siberian sturgeo…

2019

[EN] It is essential to define an optimized standard method to assess the fish sperm quality to minimize the differences between the results obtained by different laboratories. Only this optimization and standardization can make them useful from academia to industry. This study presents the validation of sperm motility assessment using a CASA-Mot system for three endangered diadromous fish species: European eel (Anguilla anguilla), Atlantic salmon (Salmo salar) and Siberian sturgeon (Acipenser baerii). To attain this goal, different technical and data processing methods were tested: 1) magnification lens (×10 and ×20), 2) Spermtrack® reusable chambers (10 and 20¿¿m depth) and 3) different f…

Mining extraction in the ocean depths: a baseline to understand and reduce acoustic impact on biodiversity.

2020

[ES] A lo largo de la historia, el hombre ha explotado los recursos minerales de la tierra para su supervivencia y desarrollo tecnológico sin un equilibrio con su regeneración. Dado el crecimiento de la población mundial y la reducción de recursos, el hombre comenzó a buscar nuevos depósitos que se encontraron en la década de 1960 en las profundidades de los océanos. Con estos, la humanidad empezò a pensar en extraer los minerales de estos depósitos y esto llevò al nacimiento de Deep Sea Mining (DSM). Las consecuencias de las actividades mineras en las profundidades del mar no se conocen realmente y los efectos pueden ser diferentes: contaminación acústica, contaminación lumínica, contamina…

Revision of the Charipinae species present in India with some taxonomic changes (Hymenoptera: Cynipoidea, Figitidae, Charipinae)

2023

Charipinae species present in India are revised and taxonomic changes are proposed for some species recently described from this country. In total seven species are nowadays valid from India: Alloxysta brevis (Thomson, 1862), A. consobrina (Zetterstedt, 1838), A. nottoni Ferrer-Suay & Pujade-Villar, 2015, A. pleuralis (Cameron, 1879), Phaenoglyphis indica Ferrer-Suay & Pujade-Villar, 2013, P. longicornis (Hartig, 1840) and P. villosa (Hartig, 1841). Alloxysta ochracea Bijoy & Rajmohana, 2013, is a new synonymy of A. brevis (Thomson, 1862). Alloxysta bhagyae Bijoy & Rajmohana, 2013, A. indica Bijoy & Rajmohana, 2013, and A. sholicola Bijoy & Rajmohana, 2013 are new synonymies of A. consobrin…

Proposal for the application of an interactive entomological key in teaching environments

2022

The objective of this proposal is to develop an interactive key for the identification of the main orders of insects present in the Mediterranean environment, which can be used in Biology Degree, as an improvement of laboratory practices. The experience we have indicates that an interactive identification, with described and at the same time visual characters, will be more useful for students. In this way, the student can visualize the character to which the key refers and check if it is present in the specimen that she or he is studying and trying to classify. We think that with this form of study the students better acquire the knowledge related to the important characters in the identifi…