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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
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
Segnalazione del primo ritrovamento di Bursaphelenchus poligraphi associato a Polygraphus poligraphus in Italia
No full textI cambiamenti climatici, caratterizzati da eventi estremi come intense nevicate, venti forti e prolungate siccità, hanno indebolito le
foreste di abete rosso (Picea abies) in Italia, rendendole così più vulnerabili agli attacchi di coleotteri scolitidi autoctoni, tipicamente
associati a questa conifera, quali Ips typographus e Pityogenes chalcographus. I coleotteri scolitidi hanno un ruolo ecologico
significativo nelle foreste, che tuttavia può trasformarsi in una minaccia fitosanitaria per le piante ospiti, specialmente in condizioni
di stress ambientali.
In questo lavoro è stata posta l’attenzione sulla specie Polygraphus poligraphus L. (Coleoptera Curculionidae Scolytinae), associata
per la prima volta all’abete rosso in popolamenti appenninici quali Abetone (Regione Toscana) e Montedimezzo (Regione Molise), sia
in aree naturali che in piantagioni artificiali, evidenziando la sua capacità di espandersi in diversi ambienti. Inoltre, la sua azione
sinergica con le specie di scolitidi sopraccitati ha contribuito al declino dell’abete rosso, specialmente in popolamenti situati al di
fuori del loro areale naturale e quindi più vulnerabili.
Durante i monitoraggi condotti nel 2024 per la valutazione dello stato fitosanitario di popolamenti di abete rosso nel territorio
appenninico, sono stati prelevati campioni di legno e corteccia e di insetti adulti di P. poligraphus su piante che mostravano attacchi
dello scolitide. I campioni raccolti sono stati analizzati presso il Laboratorio di Nematologia del CREA-DC di Firenze. Per valutare
l’eventuale presenza di nematodi, i campioni di legno e corteccia sono stati estratti mediante il metodo delle bacinelle di
Oostenbrink e gli insetti sono stati esaminati tramite osservazione diretta allo stereomicroscopio.
Dal legno proveniente dal sito toscano (Abetone) e dal legno e dagli insetti adulti raccolti in Molise è stato estratto, per la prima
volta in Italia, il nematode Bursaphelenchus poligraphi Fuchs (1937), appartenente al gruppo sexdentati e noto finora solo in Francia,
Germaniania e Slovacchia. L’identificazione della specie è stata realizzata tramite analisi morfologica e molecolare. Le misurazioni
effettuate su esemplari maschi e femmine sono conformi a quelle riportate in letteratura.
Questo ritrovamento conferma il legame tra nematode-scolitide, come evidenziato in letteratura. In particolare, lo scolitide P.
poligraphus è già riconosciuto come il principale vettore del nematode B. poligraphi
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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