Search results for "Insecta"
showing 10 items of 265 documents
Diet of the insectivorous bat 'Pipistrellus nathusii' during autumn migration and summer residence
2013
Migration is widespread among vertebrates, yet bat migration has received little attention and only in the recent decades has a better understanding of it been gained. Migration can cause significant changes in behaviour and physiology, due to increasing energy demands and aerodynamic constraints. Dietary shifts, for example, have been shown to occur in birds before onset of migration. For bats, it is not known if a change in diet occurs during migration, although breeding season–related dietary preference has been documented. It is known that a diet rich in fats and the accumulation of fat deposits do increase the flight range of migratory bats. Some bat species can be regarded as long-dis…
Environmental distribution and diversity of Bacillus thuringiensis in Spain.
1998
Bacillus thuringiensis was isolated from 301 out of 1,005 samples collected in Spain from agricultural and non-cultivated soils, dust from stored products, and dead insects. Based on the production of parasporal crystals, 1,401 isolates were identified as B. thuringiensis after examining 11,982 B. thuringiensis-like colonies. We found a greater presence of B. thuringiensis in dust from grain storages than in other habitats. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of the spore-crystal mixtures revealed diverse populations of B. thuringiensis which were differentiated in at least 92 distinct protein profiles. Serological identification also showed great diversity among the S…
Characterization of Bacillus thuringiensis ser. balearica (Serotype H48) and ser. navarrensis (serotype H50): two novel serovars isolated in Spain.
2000
The novel strains of Bacillus thuringiensis PM9 and NA69, isolated from soil samples in Spain, were classified and characterized in terms of their crystal proteins, plasmid profile, cry genes content, and their toxicological properties against several species of Lepidoptera, Coleoptera, and Diptera. Both strains share morphological and biochemical characteristics with previously described B. thuringiensis strains, although their unique H antigens identify them as two new serotypes. Two new serovar names, B. thuringiensis serovar balearica (H serotype 48) and B. thuringiensis serovar navarrensis (H serotype 50) are proposed for the type strains PM9 and NA69, respectively.
The mantids of Caucasus.
2008
The male of Hierodula trancaucasica Brunner von Wattenwyl, 1878, is described here. The external morphology and shape of genitalia are analysed. A comparison with previous data and some biogeographical considerations on Paramantini are given.
European Red List of Grasshoppers, Crickets and Bush-crickets
2016
The European Red List is a review of the conservation status of European species according to IUCN regional Red Listing guidelines. It identifies those species that are threatened with extinction at the regional level, so that appropriate conservation action can be taken to improve their status. This Red List publication summarises results for all hitherto described native European Orthoptera species (grasshoppers, crickets and bush-crickets). All Orthoptera species (grasshoppers, crickets and bushcrickets) native to or naturalised in Europe before AD 1500 (a total of 1,082 species), have been assessed in this Red List. The geographical scope is continent-wide, extending from Iceland in the…
REVISIONE PRELIMINARE DELLA BIODIVERSITÀ ENTOMOLOGICA DELL’ISOLA DI LAMPEDUSA (SICILIA - ITALIA) PRELIMINARY REVISION OF ENTOMOLOGICAL BIODIVERSITY I…
2013
Lampedusa è un'isola appartenente all'arcipelago delle Pelagie, che è particolarmente interessante per l'aspetto faunistico, in quanto crocevia tra la fauna Europea e Africana. Gli insetti, per la loro abbondanza e diversità in natura, rappresentano una classe nel regno animale particolarmente utile per studiare la biodiversità e i fenomeni di migrazione o emigrazione delle specie, e per valutare inoltre eventuali cambiamenti climatici. Allo stato attuale i dati sull'entomofauna non sono organici e sono riportati in modo spesso frammentario, e la check-list più completa disponibile è datata 1995, quasi venti anni fa. Lo scopo di questo lavoro è stato quello di impiegare nuove tecniche di ri…
PIANTE AROMATICHE E MEDICINALI: L’ ENTOMOCENOSI DEL CAPPERO IN SICILIA
2005
Guilds of herbivore insects of medicinal and aromatic plants are generally composed by poliphagous insects that only occasionally are present at high infestation levels. In this paper the main insect pests observed on Capper spinosa (L.) in Sicily are described. The key pests of this crop are Capparimyia savastani (Martelli) – (Diptera: Tephritidae), Asphondylia gennadii (Marchal) (Diptera: Cecidomyiidae), and, the painted bug Bagrada hilaris (Burmeister) (Heteroptera: Pentatomidae). Infestations of other insect pests are also occasionally recorded as the case of the southern green stink bug, Nezara viridula (L.) (Heteroptera: Pentatomidae), in the island of Ustica; the cabbage butterfly, P…
Scelionidae (Hymenoptera: Platygastroidea) recorded in Italy and their known hosts.
2020
Scelionidi (Hymenoptera: Platygastroidea) segnalati per l’Italia e loro ospiti noti. Il seguente lavoro propone una revisione della checklist italiana della famiglia Scelionidae dopo quella proposta da Bin et al. (1995). Viene inoltre fornito l’elenco delle specie di ospiti di Insecta e Arachnida individuate nel lavoro di raccolta bibliografica. In totale sono riportati 38 generi di scelionidi per l’Italia con 181 specie di cui 58 riportano anche gli ospiti appartenenti agli ordini: Insecta: Mantodea, Orthoptera, Embioptera, Hemiptera, Coleoptera, Neuroptera, Diptera, Lepidoptera; Arachnida: Araneae Dysderiidae, Lycosidae. Grazie all'intenso lavoro di ricerca del professor Giovanni Mineo, r…
Molecular characterization of hemoglobin from the honeybee Apis mellifera
2005
Due to the prevailing importance of the tracheal system for insect respiration, hemoglobins had been considered rare exceptions in this arthropod subphylum. Here we report the identification, cloning and expression analysis of a true hemoglobin gene in the honeybee Apis mellifera (Hymenoptera). The deduced amino acid sequence covers 171 residues (19.5 kDa) and harbors all globin-typical features, including the proximal and the distal histidines. The protein has no signal peptide for transmembrane transport and was predicted to localize in the cytoplasm. The honeybee hemoglobin gene shows an ancient structure, with introns in positions B12.2 and G7.0, while most other insect globins have div…
Massive presence of insertion sequences in the genome of SOPE, the primary endosymbiont of the rice weevil Sitophilus oryzae
2008
Bacteria that establish an obligate intracellular relationship with eukaryotic hosts undergo an evolutionary genomic reductive process. Recent studies have shown an increase in the number of mobile elements in the first stage of the adaptive process towards intracellular life, although these elements are absent in ancient endosymbionts. Here, the genome of SOPE, the obligate mutualistic endosymbiont of rice weevils, was used as a model to analyze the initial events that occur after symbiotic integration. During the first phases of the SOPE genome project, four different types of insertion sequence (IS) elements, belonging to well-characterized IS families from γ-proteobacteria, were identif…