1,721,065 research outputs found
FIGURE 3. Cinara palaestinensis s in The sexuales of Cinara palaestinensis Hille Ris Lambers, the Aleppo pine aphid (Hemiptera: Aphididae Lachninae)
No full textFIGURE 3. Cinara palaestinensis s.str.—apterous male: (a) ventral view, (b) antenna.Published as part of Binazzi, Francesco, Pennacchio, Fabrizio, Peverieri, Giuseppino Sabbatini & Roversi, Pio Federico, 2016, The sexuales of Cinara palaestinensis Hille Ris Lambers, the Aleppo pine aphid (Hemiptera: Aphididae Lachninae), pp. 417-424 in Zootaxa 4137 (3) on page 422, DOI: 10.11646/zootaxa.4137.3.8, http://zenodo.org/record/27193
First report of Ricania speculum (Walker, 1851) in Europe (Hemiptera: Fulgoromorpha: Ricaniidae)
No full textMazza, Giuseppe, Pennacchio, Fabrizio, Gargani, Elisabetta, Franceschini, Italo, Roversi, Pio Federico, Cianferoni, Fabio (2014): First report of Ricania speculum (Walker, 1851) in Europe (Hemiptera: Fulgoromorpha: Ricaniidae). Zootaxa 3861 (3): 297-300, DOI: http://dx.doi.org/10.11646/zootaxa.3861.3.
FIGURE 2. Cinara palaestinensis s in The sexuales of Cinara palaestinensis Hille Ris Lambers, the Aleppo pine aphid (Hemiptera: Aphididae Lachninae)
No full textFIGURE 2. Cinara palaestinensis s.str.—oviparous female: (a) ventral posterior abdomen, (b) antenna.Published as part of Binazzi, Francesco, Pennacchio, Fabrizio, Peverieri, Giuseppino Sabbatini & Roversi, Pio Federico, 2016, The sexuales of Cinara palaestinensis Hille Ris Lambers, the Aleppo pine aphid (Hemiptera: Aphididae Lachninae), pp. 417-424 in Zootaxa 4137 (3) on page 421, DOI: 10.11646/zootaxa.4137.3.8, http://zenodo.org/record/27193
Valutazione della sopravvivenza di Steinernema carpocapsae e della sua infettività su Galleria mellonella dopo la crioconservazione
No full textThe ultrastructure of spermiogenesis in four species of Coccoidea (Insecta, Homoptera)
No full textThe ultrastructure of spermiogenesis in four species of Coccoidea, namely Quadraspidiotus perniciosus and Pseudaulacaspis pentagona (Diaspididae), as well as Planococcus citri and Planococcus ficus (Pseudococcidae), is described. Similarly to other coccids, during spermiogenesis sperm nuclei elongate towards the plasma membrane, forming a conical papilla. The microtubule bundles surrounding the nucleus subsequently elongate and a mature sperm is formed. At the end of spermiogenesis, the motile sperm of all the species consists of a cylindrical axial nucleus surrounded by a spiral (Q. perniciosus) or by concentric rings of microtubules (P. pentagona, P. citri and P. ficus) forming a peculiar flagellum. Other features common to all these species are the lack of centrioles, acrosome and mitochondria in the spermatid and mature sperm. Differences arise in the number of spermatid cells per cyst (32 in Q. perniciosus and 16 in the other three species) and in the number and arrangement of microtubules forming the flagellum. Details on the origin of the flagellum and on the formation of the secondary sheath of the sperm bundle are provided. Lastly, the evolution of the Coccid group is discussed from a phylogenetic perspective based on sperm ultrastructure
Filiferol, a chalconoid analog from Washingtonia filifera possibly involved in the defense against the red palm weevil Rhynchophorus ferrugineus Olivier
No full textA chalconoid analog, 1,3,5-benzentriol 2-[(2S,3R)-3-(3,4-dihydroxylphenyl)-2,3-dihydroxylpropyl], named filiferol (I), has been isolated and purified for the first time from the leaf basal tissues of the palm species Washingtonia filifera. The chem. structure of I has been elucidated unambiguously by spectroscopic and chem. methods. I has been based on a flavonol structure with the redn. of the common flavonoid keto group to give an unprecedented methylene carbon on the three carbon chain. An analogous compd. with S stereochem. at C3 has been obtained as synthetic intermediate for developing an enantioselective synthesis of (2R,3S)-(+)-catechin. Even though I proved to be deprived of antifungal properties, it displays a very effective larvicidal activity against red palm weevil, Rhynchophorus ferrugineus, an important pest affecting cultivated and ornamental palms. I has been isolated from leaf tissues of W. filifera, a species resistant to this pest, but this mol. seems instead undetectable in tissues of other palm species susceptible to the parasite. The presence of I could, therefore, account for W. filifera natural resistance to the attacks of the red palm weevil. [on SciFinder(R)
Activity of chestnut tannins against the Southern root-knot nematode meloidogyne incognita
No full textEngaging me softly: Comparing social drivers for continuative citizens' participation in a long-term citizen science initiative on protected species monitoring
Full text linkThe engagement of volunteers in Citizen Science (CS) projects is a relevant issue that needs to be addressed to ensure long-term sustainability, scientific relevance, and public participation. Given this, the present paper analyses the social drivers of volunteers' involvement in a long-term CS initiative to monitor protected species and habitats all over Italian national territory. This initiative was initially born as the LIFE11 NAT/IT/000252 MIPP (Monitoring of Insects with Public Participation), then changed name to "InNat" benefitting from Italian national fundings, and it finally ended in 2024. Overall, it counts more than 1600 participants to whom a dedicated survey was submitted in 2022 to compare and analyse different factors potentially driving participation (potential enablers) and fostering engagement within the project. Based on the survey results (22.3% response rate of 1632 invitations sent), different drivers for participation are modelled (socio-demographic features, interest in scientific topics, environmental attitudes) considering the following main factors: (i) the level of commitment to the initiative, (ii) the seniority of the citizen scientist involved, (iii) the attitudes towards nature conservation and species monitoring, (iv) the value assigned to CS activities. In this context, socio-demographic variables have been compared to attitudes and practices connected to open-air monitoring activities (e.g., recording protected species and habitats by taking pictures in nature). The proposed analyses tackle a variety of cultural and social components as well as their relationship, highlighting some of the features (e.g., active interest in CS activities reverberating in both commitments to engage other volunteers and active search for CS initiatives) that characterize constant participation. We classified volunteers into two categories (i.e., Consistent Volunteers and Non-Consistent Volunteers), comparing these two categories along potential enablers of engagement. Results show homogeneity among volunteers for several parameters (e.g., similar education level, age, occupational status) but also differences in personal motivation and active interest in citizen science initiatives
Report of the first finding of Bursaphelenchus poligraphi and B. paraleoni in Italy
No full textBark beetles play an important ecological role in forest ecosystems, but under certain conditions, they can become a serious phytosanitary threat to host plants. This risk increases in the presence of environmental stress factors linked to climate change, such as heavy snowfall, strong winds, and prolonged drought periods.
This study focused on weakened or declining stands of Norway spruce (Picea abies) in the Apennines, specifically in the areas of Abetone (Tuscany) and Montedimezzo (Molise), affected by infestations of the beetle Polygraphus poligraphus L. (Coleoptera: Curculionidae, Scolytinae).
During monitoring activities carried out in 2024, samples of wood, bark, and adult beetles were collected from infested trees.
To investigate the possible presence of associated nematodes, the wood and bark samples were processed using the Oostenbrink dish method, while the adult insects were examined through direct observation under a stereomicroscope.
The analyses led to the identification of two nematode species never before reported in Italy: Bursaphelenchus poligraphi, isolated from both wood and adult beetles — previously known only in France, Germany, Romania, and Slovakia — and Bursaphelenchus paraleoni, found in wood samples from Molise, until now, only been reported in China, where it was intercepted in wood imported from the United States
Nematicidal efficacy of new abamectin-based products used alone and in combination with indolebutyric acid against the root-knot nematode Meloidogyne incognita
No full text- …
