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Tarasco Eustachio - One of the best experts on this subject based on the ideXlab platform.

  • Morfologia larvale e biologia di Coelichneumon rudis (Boyer de Fonscolombe) (Hymenoptera: Ichneumonidae), endoparassitoide delle crisalidi della Thaumetopoea pityocampa (Denis et Schiffermüller) (Lepidoptera: Thaumetopoeidae)
    'Wiley', 2016
    Co-Authors: Tarasco Eustachio
    Abstract:

    LARVAL MORPHOLOGY AND BIOLOGY OF COELICHNEUMON RUDIS (BOYER DE FONSCOLOMBE) (HYMENOPTERA: ICHNEUMONIDAE), ENDOPARASITOID OF Thaumetopoea PITYOCAMPA (DENIS ET SCHIFFERMÜLLER) PUPAEDuring 1992-1994 a morphological and bioethological study on Coelichneumon rudis (Boyer de Fonscolombe) (Hymenoptera: Ichneumonidae), an endophagous parasitoid of Thaumetopoea pityocampa (Denis et Schiffermüller) (Lepidoptera: Thaumetopoeidae) pupae, was carried out. The egg and the 5 larval instars, with a particular regard to the head sclerotizations, were described and illustrated. Observations effected in pine woods and in laboratory showed that Coelichneumon rudis is a monovoltine species characterized by arrhenotokous parthenogenesis and protandry. At room temperature the eggs hatch after 24-36 hours and the larva reaches the fifth and last instar after 7-10 days. The ichneumonid spends summer and winter as larva in the last instar and emerges in the following spring. Other biological informations are reported about sex ratio, prolificity, longevity, superparasitism, multiparasitism and natural enemies of C. rudis. Ethological observations searched into mating behaviour, without any courtship, and oviposition behaviour, with a particular regard to the host selection. Furthermore, the parasitization percentages of T. pityocampa pupae by C. rudis in the 4 investi- gated biotopes are reporeted. Finally, the results of the research have been compared with the bibliographic available know- ledges about other Ichneumonids. Key words: Ichneumoninae, Pine Processionary, natural enemies, ethology, mating behaviour, host selection, Apulia (Southern Italy).Durante il triennio 1992-1994 è stato eseguito uno studio morfologico e bioetologico dell’Imenottero Icneumonide Coelichneumon rudis (Boyer de Fonscolombe), parassitoide endo- fago delle crisalidi della Thaumetopoea pityocampa (Denis et Schiffermüller) (Lepidoptera: Thaumetopoeidae). Sono stati descritti ed illustrati l’uovo e le 5 età larvali, con particolare riguardo alle sclerotizzazioni del capo. Coelichneumon rudis è risultato essere una specie monovoltina, a spiccata proterandria e a partenogenesi arrenotoca. A 25 °C le uova schidono in 24-36 ore e le larve raggiungono la maturità (V età) in 7-10 giorni; in tale stadio l’Icneumonide si mantiene in diapausa dall’estate alla primavera successiva. Altre informazioni inedite vengono riportate a riguardo della sex ratio, della prolificità, del superparassitismo, del multiparassitismo, della longevità e dei nemici naturali del C. rudis. Le osservazioni etologiche hanno riguardato le modalità dell’accoppiamento, evidenziando l’assenza di rituali precopula, e della ovideposizione, con particolare riguardo alla ricerca dell’ospite. Vengono riportati, inoltre, i dati relativi alle percentuali di crisalidi di T. pityocampa parassitizzate dal C. rudis nei 4 biotopi indagati. Infine, i risultati ottenuti sono stati confrontati con le conoscenze attualmente disponibili in bibliografia per altre specie di Icneumonidi. Parole chiave: Ichneumoninae, Processionaria del pino, nemici naturali, etologia, modalità di accoppiamento, modalità di ovideposizione, ricerca dell’ospite, Puglia (Italia Meridionale).  

  • Preliminary attempts to control overwintering populations of Thaumetopoea pityocampa (Den. et Schiff.) (Lepidoptera: Thaumetopoeidae) with Steinernema feltiae (Filipjev, 1934) (Nematoda: Steinernematidae)
    'Wiley', 2016
    Co-Authors: Triggiani Oreste, Tarasco Eustachio
    Abstract:

    The Pine processionary caterpillar Thaumetopoea pityocampa (Den. et Schiff.) (Lepidoptera: Thaumetopoeidae) is a very dangerous lepidopterous pest spread in all mediterranean area. A preliminary survey was conducted with 3 different strains of Steinernematid entomopathogenic nematodes in the nests of pine processionary caterpillars in a Pinus halepensis Miller reforestation at “Pulicchie” (Gravina in Puglia, 338 m a.s.l.) of Apulia Region (southern Italy). A suspension of 300,000 IJs in 20 ml of gel (Idrosorb SR 2002 - Nigem®) was employed in each nest and mortality recorded every 10 days, for 30 days. The results of this preliminary experiment pointed out: - a real feasibility to reduce the overwintering larval populations injecting gel suspension of Steinernema feltiae IJs in their nests; - the persistence in the nests of IJs for more than 20 days from treatment; - the possibility of a limited number of nematodes to complete their life cycle in the larvae of T. pityocampa; - very low effects on the parasite Phryxe caudata Rond. (Diptera: Tachinidae). Key words: aqueous suspension, gel suspension, IJs injection, nests, Pinus halepensis, reforestation, Phryxe caudata.PROVE PRELIMINARI PER IL CONTROLLO DI POPOLAZIONI SVERNANTI DI Thaumetopoea pityocampa (DEN. ET SCHIFF.) (LEPIDOPTERA: THAUMETOPOEIDAE) CON Steinernema feltiae (FILIPJEV, 1934) (NEMATODA: STEINERNEMATIDAE) Sono state effettuate preliminari prove di controllo con Steinernema feltiae in un rimboschimento di Pinus halepensis Miller gravemente infestato da Thaumetopoea pityocampa (Den. et Schiff.) (Lepidoptera: Thaumetopoeidae). Una sospensione di 300.000 IJs in Idrosorb SR 2002 (Nigem®) è stata iniettata nel gennaio 2000 in ciascun nido contenente larve svernanti del lepidottero. La mortalità è stata verificata ogni 10 giorni, per 30 giorni. I risultati hanno evidenziato: - la capacità di S. feltiae di ridurre le popolazioni larvali svernanti di Thaumetopoea pityocampa tramite iniezioni di gel con IJs nei nidi; - la persistenza di IJs nei nidi per più di 20 giorni dal trattamento; - la abilità da parte dello Steinernematide di completare il ciclo nelle larve di T. pityocampa, anche se in un numero limitato; - basso livello di parassitizzazione nei confronti delle larve di Phryxe caudata Rond. (Diptera: Tachinidae). Parole chiave: sospensione in acqua, sospensione in gel, iniezioni con IJ, nidi, Pinus alepensis, rimboschimento, Phryxe caudata.

  • Un caso di Ginandromorfismo in Coelichneumon rudis (Boyer de Fonscolombe, 1847) (Hymenoptera, Ichneumonidae)
    'Wiley', 2016
    Co-Authors: Tarasco Eustachio
    Abstract:

    A GYNANDROMORPHIC SPECIMEN OF COELICHNEUMON RUDIS (BOYER DE FONSCOLOMBE, 1847) (HYMENOPTERA, ICHNEUMONIDAE) It is described a gynandromorph of Coelichneumon rudis (Fonsc.) emerged from a Thaumetopoea pityocampa (Den. et Schiff.) pupa collected in a Pine Wood of Apulia region (Southern Italy); the specimen, prevalently female, shows some male parts on the head and the torax. Key words: gynandromorphism, ichneumonid L'autore descrive un ginandromorfo di Coelichneumon rudis (Fonsc.) sfarfallato da crisalidi di Thaumetopoea pityocampa (Den. et Schiff.) raccolte in una pineta della Puglia (Italia meridionale); l’esemplare, di aspetto prevalentemente femminile, presenta alcune parti del capo e del torace con caratteri tipicamente maschili

Eustachio Tarasco - One of the best experts on this subject based on the ideXlab platform.

  • Preliminary attempts to control overwintering populations of Thaumetopoea pityocampa (Den. et Schiff.) (Lepidoptera: Thaumetopoeidae) with Steinernema feltiae (Filipjev, 1934) (Nematoda: Steinernematidae)
    2016
    Co-Authors: Oreste Triggiani, Eustachio Tarasco
    Abstract:

    The Pine processionary caterpillar Thaumetopoea pityocampa (Den. et Schiff.) (Lepidoptera: Thaumetopoeidae) is a very dangerous lepidopterous pest spread in all mediterranean area. A preliminary survey was conducted with 3 different strains of Steinernematid entomopathogenic nematodes in the nests of pine processionary caterpillars in a Pinus halepensis Miller reforestation at “Pulicchie” (Gravina in Puglia, 338 m a.s.l.) of Apulia Region (southern Italy). A suspension of 300,000 IJs in 20 ml of gel (Idrosorb SR 2002 - Nigem®) was employed in each nest and mortality recorded every 10 days, for 30 days. The results of this preliminary experiment pointed out: - a real feasibility to reduce the overwintering larval populations injecting gel suspension of Steinernema feltiae IJs in their nests; - the persistence in the nests of IJs for more than 20 days from treatment; - the possibility of a limited number of nematodes to complete their life cycle in the larvae of T. pityocampa; - very low effects on the parasite Phryxe caudata Rond. (Diptera: Tachinidae). Key words: aqueous suspension, gel suspension, IJs injection, nests, Pinus halepensis, reforestation, Phryxe caudata. PROVE PRELIMINARI PER IL CONTROLLO DI POPOLAZIONI SVERNANTI DI Thaumetopoea pityocampa (DEN. ET SCHIFF.) (LEPIDOPTERA: THAUMETOPOEIDAE) CON Steinernema feltiae (FILIPJEV, 1934) (NEMATODA: STEINERNEMATIDAE) Sono state effettuate preliminari prove di controllo con Steinernema feltiae in un rimboschimento di Pinus halepensis Miller gravemente infestato da Thaumetopoea pityocampa (Den. et Schiff.) (Lepidoptera: Thaumetopoeidae). Una sospensione di 300.000 IJs in Idrosorb SR 2002 (Nigem®) e stata iniettata nel gennaio 2000 in ciascun nido contenente larve svernanti del lepidottero. La mortalita e stata verificata ogni 10 giorni, per 30 giorni. I risultati hanno evidenziato: - la capacita di S. feltiae di ridurre le popolazioni larvali svernanti di Thaumetopoea pityocampa tramite iniezioni di gel con IJs nei nidi; - la persistenza di IJs nei nidi per piu di 20 giorni dal trattamento; - la abilita da parte dello Steinernematide di completare il ciclo nelle larve di T. pityocampa, anche se in un numero limitato; - basso livello di parassitizzazione nei confronti delle larve di Phryxe caudata Rond. (Diptera: Tachinidae). Parole chiave: sospensione in acqua, sospensione in gel, iniezioni con IJ, nidi, Pinus alepensis, rimboschimento, Phryxe caudata.

  • morfologia larvale e biologia di coelichneumon rudis boyer de fonscolombe hymenoptera ichneumonidae endoparassitoide delle crisalidi della Thaumetopoea pityocampa denis et schiffermuller lepidoptera thaumetopoeidae
    Entomologica, 2016
    Co-Authors: Eustachio Tarasco
    Abstract:

    LARVAL MORPHOLOGY AND BIOLOGY OF COELICHNEUMON RUDIS (BOYER DE FONSCOLOMBE) (HYMENOPTERA: ICHNEUMONIDAE), ENDOPARASITOID OF Thaumetopoea PITYOCAMPA (DENIS ET SCHIFFERMULLER) PUPAE During 1992-1994 a morphological and bioethological study on Coelichneumon rudis (Boyer de Fonscolombe) (Hymenoptera: Ichneumonidae), an endophagous parasitoid of Thaumetopoea pityocampa (Denis et Schiffermuller) (Lepidoptera: Thaumetopoeidae) pupae, was carried out. The egg and the 5 larval instars, with a particular regard to the head sclerotizations, were described and illustrated. Observations effected in pine woods and in laboratory showed that Coelichneumon rudis is a monovoltine species characterized by arrhenotokous parthenogenesis and protandry. At room temperature the eggs hatch after 24-36 hours and the larva reaches the fifth and last instar after 7-10 days. The ichneumonid spends summer and winter as larva in the last instar and emerges in the following spring. Other biological informations are reported about sex ratio, prolificity, longevity, superparasitism, multiparasitism and natural enemies of C. rudis. Ethological observations searched into mating behaviour, without any courtship, and oviposition behaviour, with a particular regard to the host selection. Furthermore, the parasitization percentages of T. pityocampa pupae by C. rudis in the 4 investi- gated biotopes are reporeted. Finally, the results of the research have been compared with the bibliographic available know- ledges about other Ichneumonids. Key words: Ichneumoninae, Pine Processionary, natural enemies, ethology, mating behaviour, host selection, Apulia (Southern Italy). Durante il triennio 1992-1994 e stato eseguito uno studio morfologico e bioetologico dell’Imenottero Icneumonide Coelichneumon rudis (Boyer de Fonscolombe), parassitoide endo- fago delle crisalidi della Thaumetopoea pityocampa (Denis et Schiffermuller) (Lepidoptera: Thaumetopoeidae). Sono stati descritti ed illustrati l’uovo e le 5 eta larvali, con particolare riguardo alle sclerotizzazioni del capo. Coelichneumon rudis e risultato essere una specie monovoltina, a spiccata proterandria e a partenogenesi arrenotoca. A 25 °C le uova schidono in 24-36 ore e le larve raggiungono la maturita (V eta) in 7-10 giorni; in tale stadio l’Icneumonide si mantiene in diapausa dall’estate alla primavera successiva. Altre informazioni inedite vengono riportate a riguardo della sex ratio, della prolificita, del superparassitismo, del multiparassitismo, della longevita e dei nemici naturali del C. rudis. Le osservazioni etologiche hanno riguardato le modalita dell’accoppiamento, evidenziando l’assenza di rituali precopula, e della ovideposizione, con particolare riguardo alla ricerca dell’ospite. Vengono riportati, inoltre, i dati relativi alle percentuali di crisalidi di T. pityocampa parassitizzate dal C. rudis nei 4 biotopi indagati. Infine, i risultati ottenuti sono stati confrontati con le conoscenze attualmente disponibili in bibliografia per altre specie di Icneumonidi. Parole chiave: Ichneumoninae, Processionaria del pino, nemici naturali, etologia, modalita di accoppiamento, modalita di ovideposizione, ricerca dell’ospite, Puglia (Italia Meridionale).

  • Natural enemies emerged from Thaumetopoea pityocampa (Denis & Sciffermüller) (Lepidoptera Notodontidae) pupae in Southern Italy
    Redia-Giornale Di Zoologia, 2016
    Co-Authors: Eustachio Tarasco, Mohamed Zamoum, Oreste Triggiani, Monica Oreste
    Abstract:

    Observation made over a 4-year period in pinewoods of Apulia Region (South Italy) on Thaumetopoea pityocampa (Denis Sciffermuller) (Lepidoptera: Notodontidae) prepupae and pupae, indicated the following natural enemies complex: Hexamermis sp. (Nematoda: Mermithidae), Phryxe caudata (Diptera: Tachinidae), Villa brunnea and Hemipenthes velutina (Diptera: Bombyliidae), Conomorium pityocampae (Hymenoptera: Pteromalidae), Coelichneumon rudis and Cryptus sp. (Hymenoptera: Ichneumonidae), Beauveria bassiana and Isaria farinosa (formerly Paecylomices farinosus ) (Ascomycota: Hypocreales). The moths and the parasitoid species emerged sequentially and, although these natural enemies show irregular distribution, they together controlled up to 60% of T. pityocampa pupae. Ecological implications of such parasitism are being discussed.

  • natural enemies emerged from Thaumetopoea pityocampa denis sciffermuller lepidoptera notodontidae pupae in southern italy
    Redia-Giornale Di Zoologia, 2016
    Co-Authors: Eustachio Tarasco, Mohamed Zamoum, Oreste Triggiani, Monica Oreste
    Abstract:

    Observation made over a 4-year period in pinewoods of Apulia Region (South Italy) on Thaumetopoea pityocampa (Denis Sciffermuller) (Lepidoptera: Notodontidae) prepupae and pupae, indicated the following natural enemies complex: Hexamermis sp. (Nematoda: Mermithidae), Phryxe caudata (Diptera: Tachinidae), Villa brunnea and Hemipenthes velutina (Diptera: Bombyliidae), Conomorium pityocampae (Hymenoptera: Pteromalidae), Coelichneumon rudis and Cryptus sp. (Hymenoptera: Ichneumonidae), Beauveria bassiana and Isaria farinosa (formerly Paecylomices farinosus ) (Ascomycota: Hypocreales). The moths and the parasitoid species emerged sequentially and, although these natural enemies show irregular distribution, they together controlled up to 60% of T. pityocampa pupae. Ecological implications of such parasitism are being discussed.

  • Efficacy and Persistence of Entomopathogenic Nematodes in Controlling Larval Populations of Thaumetopoea pityocampa (Lepidoptera: Thaumetopoeidae)
    Biocontrol Science and Technology, 2002
    Co-Authors: Oreste Triggiani, Eustachio Tarasco
    Abstract:

    A 3-year study was conducted in a Pinus halepensis reforestation of Apulia Region (Southern Italy) injecting IJs (infective juveniles) of Steinernema feltiae , S. carpocapsae and Heterorhabditis bacteriophora in aqueous and gel suspensions (Idrosorb SR 2002 [Nigem ® ], and Compex) into the nests of Thaumetopoea pityocampa caterpillar. This study showed that the gel suspensions do not percolate and that slow release of water from the gels allowed nematodes to survive and complete their life cycle in the host. Results demonstrate the feasibility of reducing overwintering larval populations by injecting gel suspension of S. feltiae . We found no negative effects on the endoparasite Phryxe caudata .

Mehmet Kanat - One of the best experts on this subject based on the ideXlab platform.

Carole Kerdelhué - One of the best experts on this subject based on the ideXlab platform.

  • Coding-Complete Genome Sequence of a Partitivirus Isolated from Pine Processionary Moth Eggs
    Microbiology Resource Announcements, 2021
    Co-Authors: Carole Kerdelhué, Franck Dorkeld, Réjane Streiff, Marie Helene Ogliastro
    Abstract:

    Two coding-complete nucleotide sequences of a partitivirus (family Partitiviridae) were discovered in transcriptomic data sets obtained from eggs of the Lepidoptera Thaumetopoea pityocampa. Each segment encodes a single open reading frame, and these two segments are predicted to encode an RNA-dependent RNA polymerase and a coat protein, respectively.

  • Coding-Complete Genome Sequences of an Iteradensovirus and an Alphapermutotetra-Like Virus Identified from the Pine Processionary Moth (Thaumetopoea pityocampa) in Portugal.
    Microbiology resource announcements, 2021
    Co-Authors: Franck Dorkeld, Carole Kerdelhué, Réjane Streiff, Marie Helene Ogliastro
    Abstract:

    The coding-complete genome sequences of an iteradensovirus (family Parvoviridae) and an alphapermutotetra-like virus (family Permutotetraviridae) were discovered from transcriptomic data sets obtained from Thaumetopoea pityocampa larvae collected in Portugal. Each of the coding-complete genome sequences of these viruses contains three main open reading frames (ORFs).

  • Ecological consequences of shifts in phenology in Thaumetopoea pityocampa
    2019
    Co-Authors: M. Branco, Carole Kerdelhué, Christian Burban, H. Santos, S. Rocha, M.-r. Paiva
    Abstract:

    Forest defoliators of temperate regions have evolutionarily adjusted their phenology to cope with food resources availability and seasonal climate fluctuations. It is critical in such environments that reproductive and developments stages coincide with suitable environmental conditions. In the pine processionary moth Thaumetopoea pityocampa, changes in phenology can occur gradually, such as in the course of adaptation to climate with latitude and altitude, or abruptly, when mutations occur in one or more genes regulating life cycle events. Abrupt changes can either cause an eco-evolutionary dead-end, or on the contrary bring ecological opportunities, such as escape from predators, or adaptations to climate changes. Here, we report the ecological consequences of a phenological shift in a particular population of the pine processionary moth. In typical populations of this species, the adult emergence and oviposition occur in the summer, while the larval stages develop in the winter. In the shifted population, the adults mate in the spring and the larvae develop through summer. Our observations demonstrated ecological implications of the shifted life cycle and ongoing adaptations. Changes in the thermal biology, phenotypic morphological traits, fecundity and egg mortality are evidenced. Feeding constraints imposed by season and host plant physiology are also observed. Finally, competition between sympatric typical and "shifted" populations may lead to competitive exclusion. Altogether our results show a comprehensive understanding of the implications of phenology in the ecology of this pine defoliator.

  • Exploration of viral communities associated with lepidoptera : A study of Thaumetopoea pityocampa (Notodontidae) and the European corn borer species complex Ostrinia nubilalis / O. scapulalis
    2018
    Co-Authors: Franck Dorkeld, Carole Kerdelhué, Bernard Duvic, Marie Helene Ogliastro
    Abstract:

    Exploration of viral communities associated with lepidoptera : A study of Thaumetopoea pityocampa (Notodontidae) and the European corn borer species complex Ostrinia nubilalis / O. scapulalis. 10. International Workshop on the Molecular Biology and Genetics of the Lepidoptera

  • Evidence of potential hybridization in the Thaumetopoea pityocampa-wilkinsoni complex
    Agricultural and Forest Entomology, 2018
    Co-Authors: Edoardo Petrucco Toffolo, Carole Kerdelhué, Kahraman Ipekdal, Andrea Basso, Mauro Simonato
    Abstract:

    1 The winter pine processionary moth complex includes some major defoliating insects of Pinus and Cedrus forests in southern Europe and the Mediterranean Basin, where they also cause health problems to humans and animals. 2 The complex includes at least two species that were separated recently based on molecular and morphological evidence: Thaumetopoea pityocampa in the west and Thaumetopoea wilkinsoni in the east of the Mediterranean Basin. 3 Individuals from two populations, selected as representative of Th. pityocampa and Th. wilkinsoni, were used to test whether hybridization is possible under controlled conditions. 4 The hybrid offspring showed intermediate morphological and performance traits, whereas heterosis for pupal weight was detected in one of the hybrid lines. The genetic analysis confirmed the crosses. 5 Both species have large phenological plasticity and may come into contact at the edge of their range, where they could hybridize. 6 Based on the evidence accumulated so far, it is recommended that the current species designations are maintained, although a deeper study of the trait variability is required, especially in the contact zones.

Hakki M Alma - One of the best experts on this subject based on the ideXlab platform.

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