Articles de revues sur le sujet « Zerynthia »

AbstractWe inferred the phylogeny and historical biogeography of Parnassiinae species from the western Palaearctic using 825 bp DNA sequence from the mitochondrial protein-coding gene cytochrome oxidase I. Investigation of genetic variation revealed several cases of overlap in extent of divergence between traditionally applied taxonomic ranks. In particular, we found deep divergences between populations of Archon apollinus (Herbst) from Turkey and Israel, Zerynthia rumina (Linnaeus) from Spain and North Africa, Zerynthia polyxena (Denis & Schiffermüller) from Italy and other parts of its range, and Hypermnestra helios (Nickerl) from Iran and Central Asia. Due to incomplete sampling and weak morphological support, we only report the possibility of more than one species within each of these four taxa. The origin of ancestral Archon and Allancastria/Zerynthia is found to lie in the Iranian region. Diversification within genera is postulated to be the result of complex tectonic interactions between Eurasia and Africa during the past 20 million years, involving multiple dispersal and vicariance events.

A seguito della recente separazione di Zerynthia polyxena e di Z. cassandra come specie distinte, si pone il problema di capire esattamente la natura del taxon Thais creusa Meigen, 1829. In questo lavoro si riesamina la storia tassonomica di questo nome e si designa per esso come neotipo, secondo le disposizioni dell’articolo 75 dell’ICZN, l’esemplare maschio di Z. polyxena, conservato nel Museo Civico di Storia Naturale di Genova ‘Giacomo Doria’, corredato dai seguenti dati: Liguria, Passo Ghimbegna (IM) m 900, 3.V.1974. leg. G. G. Toso.

Durante los inviernos 2013/2014, 2014/2015 y 2015/2016 y la primera mitad de la primavera que siguió a cada uno de ellos, fue estudiada la fenología de la fase adulta de las mariposas diurnas presentes en el campus de la Universidad Pablo de Olavide, de Sevilla (España). El número de especies observadas a lo largo de esos inviernos (12), la abundancia de cada una de ellas y los cambios en la diversidad fueron analizados. Ejemplares de Artogeia rapae, Vanessa atalanta, Vanessa cardui, Pieris brassicae, Colias crocea, Tomares ballus y Zerynthia rumina fueron observados todos los inviernos. Por último, para todas las especies halladas en este estudio ha sido realizado un estudio comparativo entre el inicio del periodo de vuelo aquí registrado y aquél que aparece recogido en la bibliografía consultada.

Butterflies are highly sensitive to habitat and climate changes, and are recognized as important indicators of the state of the environment. Therefore their diversity needs to be studied on a regional scale in order to take actions for their protection by national and international legislation. Here, the results of a butterfly survey in the northeastern part of Kosovo are presented. A total of 93 species were recorded from 2014 to 2017 in six localities, including seven Hesperiidae, four Papilionidae, 15 Pieridae, 25 Lycenidae, 41 Nymphalidae and a single species of Riodinidae. Six of them are listed in the Red List of European Butterflies, all as Near Threatened: Cupido decoloratus (Staudinger, 1886), Pseudophilotes vicrama (Moore, 1865), Hipparchia statilinus (Hufnagel, 1766), Melitaea aurelia (Nickerl, 1850), Melitaea diamina (Lang, 1789) and Parnassius mnemosyne (Linnaeus, 1758). Five species are listed in the recently published Red book of the fauna of Kosovo: two species as Vulnerable (VU), Lycaena dispar (Haworth, 1802) and Thecla betulae (Linnaeus, 1758) and three as Near Threatened, Cupido decoloratus (Staudinger, 1886), Papilio machaon (Linnaeus, 1758) and Zerynthia cerysi (Godart, 1824). From a zoogeographical point of view, the reported species represent eight faunal elements: 51 Euro-Siberian (ES), 27 Euro-Oriental (EO), six Euro-Meridional (EM), five Holarctic (Hol), two Tropical (Tro), one Boreo-Montane (BM), one Cosmopolitan (Cos) and one Mediterranean (Med). We conclude that 93 species of butterfly fauna recorded in this survey represent a relatively high diversity, but further surveys need to be organized in order to gather more data.

Formata dal movimento dei ghiacciai quaternari, la Valle di Susa è una valle alpina nel Nord Ovest italiano. Luminoso esempio di “materia narrante”, è anche terreno di scontro tra iniziative conservazionistiche e progetti infrastrutturali transnazionali. Il progetto dell’alta velocità-capacità ferroviaria, o TAV, è stato oggetto di dure critiche. Dagli anni Novanta, grandi mobilitazioni riunite sotto il vessillo No TAV dalla valle si sono estese all’intero territorio nazionale. Parallelamente, il TAV gode l’appoggio bipartisan delle forze politiche. Diversi progetti preliminari sono stati stracciati nel tentativo di sedare un conflitto quasi trentennale con le comunità locali, un conflitto che buona parte della popolazione descrive come “resistenza”, riallacciandosi all’epopea partigiana contro la piaga nazista. Il 28 luglio 2017, il Movimento No TAV ha annunciato il rinvenimento della sgargiante Zerynthia polyxena presso il torrente Clarea. Questa farfalla è inserita nella Direttiva Habitat, adottata dall’Unione europea nel 1992 per promuovere la tutela della biodiversità. Tuttavia, l’area è stata scelta come nuovo sito di cantiere da TELT, Promotore Pubblico responsabile della realizzazione e gestione della sezione transfrontaliera della futura linea Torino-Lyon. La notizia offre una lettura inedita del rapporto fra umano, tecnologia e ambiente in un contesto di altissima tensione economica e sociale quale è la Val di Susa. Nell'Ecuba, Euripide racconta che Polissena, principessa troiana, preferì farsi uccidere piuttosto che diventare schiava. La vicenda di Polissena è il cavallo di legno che introduce nel dibattito sul progetto del TAV l’assunto per cui “la liberazione della natura così ardentemente desiderata dagli ambientalisti non potrà mai essere pienamente ottenuta senza la liberazione della donna” (Gaard). Una nuova possibilità per il Movimento No TAV di far sentire la propria voce sarà illuminando la verità che il corpo della Terra e i corpi delle donne sono un unico corpo soggiogato e subordinato all’uomo, vittime dello stesso pregiudizio, quello di essere predisposti a uno scopo: compiacere, nutrire, servire. Ho ripercorso una china che va da La Dea Bianca di Robert Graves alla stregoneria al fascismo, guidato da alcune eroine letterarie. Coniugando idealmente l’ecofemminismo alla teoria designata da Edward Lorenz, battendo le ali Polissena può davvero scatenare un uragano. Abstract Formed by the movement of large ice sheets during the Quaternary glaciations, the Susa Valley is an alpine site in northwestern Italy. It is a luminous example of “storied matter,” but it is also a battlefield between visions of wild nature and the plans of “crossnational” infrastructures. The planned TAV (Treno Alta Velocità, or high-speed train) line has been the source of heavy criticism: since the 1990s, an intense mobilization has spread from the valley all across Italy under the banner of the “No TAV” movement. The TAV project has since enjoyed unwavering political support from the members of parliament, right-wing and left-wing alike. Several preliminary drafts have been overturned in the attempt to quell a three-decades–long clash with the communities, a clash that most of the local people depict as “resistance,” latching on to the partisans’ epic stories of endurance against the Nazi scourge that took place in the valley. On July 28, 2017, the No TAV movement announced the discovery of the rare and striking butterfly Zerynthia polyxena, among the rare, threatened, or endemic species in the European Union listed in the Habitat Directive adopted in 1992. Yet, the area has been chosen as the new construction site by the company entrusted with the management of the cross-border section of the high-speed railway line between Turin and Lyon (a.k.a. TELT). This piece of news provides an original point of view to address the relationship between human and non-human agencies in a context of economic and social tension such as the Susa Valley. In this paper, I compare contemporary circumstances in the valley to the ancient Greek myth of Polyxena. In the tragedy Hecuba, the dramatist Euripides describes Polyxena as the Trojan princess who prefers to kill herself rather than become a slave. Hence, the butterfly that carries her name might become a Trojan horse enshrining the idea that “the liberation of nature so ardently desired by environmentalists will not be fully effected without the liberation of women” (G. Gaard). Combining various critical strains within the Environmental Humanities–from ecofeminism and biosemiotics to environmental history and new materialism–I suggest that richer, more encompassing narratives will be generated only when the similar fate of subjugation experienced by non-human bodies and the bodies of women will be more widely recognized. I carve a meandering spatio-temporal narrative path that goes from Robert Graves’ The White Goddess to witch trials and fascism, attempting to follow an erratic fluttering pattern amongst the voices of literature. It is the very slanted figure eight pattern that Polyxena makes with its wings, and by which, according to the theory designated by Edward Lorenz, a hurricane could grow, bringing alternative world visions.Resumen Formado por el movimiento de grandes capas de hielo durante las glaciaciones cuaternarias, el valle de Susa es un enclave alpino en el noroeste de Italia. Es un ejemplo luminoso de “materia narrada”, pero también es un campo de batalla entre las visiones de la naturaleza salvaje y los planes de las infraestructuras “transnacionales”. La línea TAV (“Treno Alta Velocità” o tren de alta velocidad) ha sido objeto de fuertes críticas: desde la década de 1990 se ha extendido en toda Italia una intensa movilización bajo el lema del movimiento “No TAV”. Desde entonces, el proyecto TAV ha gozado de un apoyo político inquebrantable por parte de los miembros del parlamento, tanto de derecha como de izquierda. Varios proyectos preliminares han sido revocados en un intento de sofocar un enfrentamiento de tres décadas con las comunidades, un choque que la mayoría de la población local concibe como “resistencia”, con referencia a las épicas historias de resistencia de los partisanos contra el flagelo nazi que tuvo lugar en el valle. El 28 de julio de 2017, el movimiento No TAV anunció el descubrimiento de la sorprendente mariposa Zerynthia polyxena, entre las especies raras, amenazadas o endémicas de la Unión Europea, enumeradas en la Directiva Hábitat adoptada en 1992. Sin embargo, el lugar ha sido elegido como el nuevo sitio de construcción por la empresa encargada de la gestión del tramo transfronterizo de la línea ferroviaria de alta velocidad entre Turín y Lyon (también conocido como TELT). Esta noticia proporciona un punto de vista original para abordar la relación entre los seres humanos y el medio ambiente en un contexto de tensión económica y social como el Valle de Susa. En este artículo, comparo las circunstancias contemporáneas en el valle con el antiguo mito griego de Políxena. En la tragedia Hécuba, el dramaturgo Eurípides describe a Políxena como la princesa troyana que prefiere suicidarse antes que ser una esclava. Por lo tanto, la mariposa que lleva su nombre podría convertirse en un caballo de Troya que consagre la idea de que “la liberación de la naturaleza tan ardientemente deseada por los ecologistas no se realizará completamente sin la liberación de las mujeres” (G. Gaard). Combinando varias tendencias críticas dentro de las ciencias humanas ambientales—desde el ecofeminismo y la biosemiótica hasta la historia ambiental y los nuevos materialismos—sugiero que se generarán narrativas más ricas e incluyentes sólo cuando el destino similar de subyugación experimentado por cuerpos no humanos y cuerpos de mujeres sea más ampliamente reconocido. Trazo una ruta narrativa espacio-temporal serpenteante que va desde La Diosa Blanca de Robert Graves hasta los juicios de brujas y el fascismo, tratando de seguir un patrón de aleteo errático entre las voces de la literatura. Es el patrón inclinado de la figura de ocho que hace Políxena con sus alas, y por obra del cual, de acuerdo con la teoría designada por Edward Lorenz, un huracán podría crecer, trayendo visiones alternativas del mundo.

Garbage collected programming languages, such as Python and C#, have accelerated software development. These modern languages increase productivity and software reliability as they provide high-level data representation and control structures. Modern languages are widely used in software development for mobile, desktop, and server devices, but their adoption is limited in real-time embedded systems. There is clear interest in supporting modern languages in embedded devices as emerging markets, like the Internet of Things, demand ever smarter and more reliable products. Multiple commercial and open-source projects, such as Zerynth and MicroPython, are attempting to provide support. But these projects rely on software garbage collectors that impose high overheads and introduce unpredictable pauses, preventing their use in many embedded applications. These limitations arise from the unsuitability of conventional processors for performing efficient, predictable garbage collection. We propose the Integrated Hardware Garbage Collector (IHGC); a garbage collector tightly coupled with the processor that runs continuously in the background. Further, we introduce a static analysis technique to guarantee that real-time programs are never paused by the collector. Our design allocates a memory cycle to the collector when the processor is not using the memory. The IHGC achieves this by careful division of collection work into single-memory-access steps that are interleaved with the processor’s memory accesses. As a result, our collector eliminates run-time overheads and enables real-time program analysis. The principles behind the IHGC can be used in conjunction with existing architectures. For example, we simulated the IHGC alongside the ARMv6-M architecture. Compared to a conventional processor, our experiments indicate that the IHGC offers 1.5–7 times better performance for programs that rely on garbage collection. The IHGC delivers the benefits of garbage-collected languages with real-time performance but without the complexity and overheads inherent in software collectors.

Negli anni 2007-2009 è stata effettuata una ricerca sui Lepidotteri Ropaloceri della Riserva Statale di Popolamento animale “Lago di Burano” (Capalbio, GR). Le specie accertate sono 50 tra le quali otto (Thymelicus acteon, Gegenes nostrodamus, Zerynthia cassandra, Lycaena thersamon, Charaxes jasius, Libythea celtis, Hipparchia fagi, Hipparchia statilinus) di interesse conservazionistico. Le entità più diffuse sono Pieris brassicae, Colias crocea, Polyommatus icarus, Lasiommata megera, Pieris rapae, Gonepteryx cleopatra, Maniola jurtina, Coenonympha pamphilus, Papilio machaon, Limenitis reducta e Kanetisa circe, specie in grado di colonizzare diverse situazioni ambientali, quelle sporadiche Thymelicus sylvestris, Ochlodes venatus, Zerynthia cassandra, Euchloe ausonia, Favonius quercus, Satyrium ilicis, Cacyreus marshalli, Celastrina argiolus, Polyommatus thersites, Inachis io e Polygonia c-album, che non trovano nella riserva ambienti idonei alla loro sopravvivenza. Le principali minacce per i Ropaloceri di Burano sono rappresentate dalla gestione della vegetazione operata per fini agricoli e dalla regimazione delle acque. Per ridurre l’impatto di questa attività si suggeriscono: il mantenimento di una fascia di terreno incolto (ampia almeno 20 m) intorno al lago e di una striscia di vegetazione (larga tra 2 e 4 m) lungo i canali retrostanti; la conservazione di siepi e arbusti; l’effettuazione degli interventi di sfalcio della vegetazione erbacea tra dicembre e gennaio.

Ichneumonid Agrypon polyxenae is a solitary larval-pupal endoparasitoid developing within the caterpillars of the genus Zerynthia and distributed in the western Palearctic. Z. polyxena is the most common host, with its caterpillars feeding on highly poisonous Aristolochia species. Here we report A. polyxenae parasitising Z. polyxena for the first time in Serbia and provide a short species description. This parasitoid has also been recorded on Z. rumina in Spain. We suggest some evidence for its presence in the newly described Z. cassandra in Italy.

Abstract In insect–plant biology, oviposition choices and larval development on different host plants are crucial factors to be investigated. To design conservation strategies for protected Lepidoptera, which are overall oligophagous but locally monophagous, it is important to understand which host plant species is locally preferred. We thus investigated oviposition choices and larval development of the protected butterfly Zerynthia polyxena in controlled laboratory conditions, using three possible host plant species which are present in the Piedmont region: Aristolochia pallida, A. clematitis, and A. rotunda. We found that laboratory conditions are not favorable for Z. polyxena oviposition, even if the fertility of the females was in normal range for Papilionidae. However, we were able to understand the local monophagy of the species on A. pallida in the Susa Valley through larval survival and development stages. Egg hatching was similar among the three host plant species; however, even if larvae eat and grow similarly on the different host plant species until the third larval stage, the only larvae that reached the pupal stage were those fed with A. pallida. In conclusion, whereas Z. polyxena is oligophagous in the rest of Europe for the genus Aristolochia, the species is locally monophagous on A. pallida in the Susa Valley.

AbstractWild boar is among the most abundant ungulates in Europe and its spread is locally creating concerns as a major threat to biodiversity. However, through their rooting activity, wild boars could play an effective role in the creation of specific microhabitat resources for plants and animals. Here, we tested the hypothesis that wild boar affects the habitat suitability to threatened butterflies, by evaluating the influence of rooting on multiple key aspects of the biology and ecology of the Mediterranean endemic Zerynthia cassandra. Namely, we used Z. cassandra as a model to test the effects of wild boar rooting on adult foraging opportunities, host plant occurrence, and oviposition site selection. We found that herbaceous communities disturbed by wild boar rooting have a higher proportion of plants representing nectar resources for early-flying butterflies. We also discovered that wild boar rooting positively influences the occurrence and abundance of the larval host plant of Z. cassandra, as well as the butterfly site selection for egg-laying. Our results indicate that wild boars may locally prove beneficial to endangered butterflies by favoring habitat quality and availability, and their role as ecosystem engineers should thus be further investigated to improve species and habitat management and conservation actions.