Journal of Entomological and Acarological Research <p>The <strong>Journal of Entomological and Acarological Research</strong> (JEAR), formerly the Bollettino di Zoologia Agraria e di Bachicoltura of the Institute of Entomology of the Università degli Studi, Milano, was founded in 1928 by Remo Grandori. Thereafter, Minos Martelli and Luciano Süss hold the direction of the Journal until December 2011. In January 2012 the Editor decided for the new open-access on-line version of JEAR.</p> <p>The Journal publishes original research papers concerning Arthopods, but reviews, editorials, technical reports, brief notes, conference proceeding, letters to the Editor, book reviews are also welcome.</p> <p>JEAR has four main areas of interest:</p> <ul> <li><strong>Entomology</strong> (systematics; morphology; biology; biotechnology; agriculture, ornamental and forest entomology; applied entomology; integrated pest management; biological control; apiculture and apidology; medical, urban and veterinary entomology; etc.)</li> <li><strong>Stored product pests</strong> (biology; integrated pest management; etc.)</li> <li><strong>Insect Ecology</strong> (behaviour; biodiversity; taxonomy; plant insect interaction and ecosystems; biological control; alien species; etc.)</li> <li><strong>Acarology</strong> (systematics; morphology; biology; parasitology; control; etc.)</li> </ul> <p>The publication of manuscripts is subject to the approval of the Section Editor who has knowledge of the field discussed in the manuscript in accordance with the principles of Peer Review; referees will be selected from the Editorial Board or among qualified scientists of the international scientific community. Articles must be written in English and must adhere to the guidelines and details contained in the Instructions to Authors.</p> en-US <p><strong>PAGEPress</strong> has chosen to apply the&nbsp;<a href="" target="_blank" rel="noopener"><strong>Creative Commons Attribution NonCommercial 4.0 International License</strong></a>&nbsp;(CC BY-NC 4.0) to all manuscripts to be published.<br><br> An Open Access Publication is one that meets the following two conditions:</p> <ol> <li>the author(s) and copyright holder(s) grant(s) to all users a free, irrevocable, worldwide, perpetual right of access to, and a license to copy, use, distribute, transmit and display the work publicly and to make and distribute derivative works, in any digital medium for any responsible purpose, subject to proper attribution of authorship, as well as the right to make small numbers of printed copies for their personal use.</li> <li>a complete version of the work and all supplemental materials, including a copy of the permission as stated above, in a suitable standard electronic format is deposited immediately upon initial publication in at least one online repository that is supported by an academic institution, scholarly society, government agency, or other well-established organization that seeks to enable open access, unrestricted distribution, interoperability, and long-term archiving.</li> </ol> <p>Authors who publish with this journal agree to the following terms:</p> <ol> <li>Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li> <li>Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</li> <li>Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.</li> </ol> (Emanuela Fusinato) (Tiziano Taccini) Tue, 26 Feb 2019 11:47:00 +0100 OJS 60 In vivo solid-phase microextraction gas chromatography-mass spectrometry (SPME-GC-MS) assay to identify epicuticular profiles across task groups of Apis mellifera ligustica workers <p>Colony integrity and survival in honeybees is regulated by chemical signals that are actively produced by glands and synergically transmitted between the members. A number of these signals regulate the typical age-related division of labor among the worker bees performing different tasks at different ages. In this study, the analysis of the cuticular profiles in <em>Apis mellifera ligustica</em> Spinola, 1806 workers at various tasks (newly emerged, nurse and forager bees) was performed using <em>in vivo</em> solid-phase microextraction gas chromatography-mass spectrometry (SPMEGC- MS). The use of in vivo SPME shed new light on the complexity of the molecular pattern on the epicuticle of honeybees. The identified molecules are mainly hydrocarbons, saturated and unsaturated carboxylic acids, and to a less extent, esters, sterols, aldehydes, and alcohols. Their relative abundance between the three task groups was evaluated using descriptive statistics and multivariate pattern recognition analysis (<em>i.e</em>., principal component analysis, PCA, and linear discriminant analysis, LDA). Eleven molecules namely nonacosane, pentacosane, (Z)-12-pentacosene, 11-tricosene, 11-methylnonacosane, squalene, 13-methylheptacosane, heptacosane, heneicosane, docosane and tricosane, occur with high frequency in newly emerged, nurse, and forager bees. The compounds that contributed the most for the separation of the three task groups in the PCA were pentacosane, (Z)-12-pentacosene, 13-methylheptacosane and squalene; while for LDA, nonacosane, 11-methylnonacosane and pentacosane were the molecules that contributed most to the discrimination.</p> A. Naccarato, F. Cavaliere, A. Tassone, P. Brandmayr, A. Tagarelli, N. Pirrone, F. Sprovieri, A. Giglio ##submission.copyrightStatement## Fri, 19 Apr 2019 08:53:49 +0200 Effects of diet composition on growth performance and feed conversion efficiency in Alphitobius diaperinus larvae <p><em>Alphitobius diap]erinus</em> has been recommended for mass-production as feed in a rearing facility because of its small size and short biological cycle. This study evaluated the effects of wheat bran and casein or their blend as insect diets on growth performance and feed conversion efficiency of <em>A. diaperinus</em> larvae in the laboratory. Casein and wheat bran were the protein and carbohydrate sources of choice, respectively, for diet preparation. Five experimental diet treatments to be tested were designed as follows: control (100% casein), T1 (75% casein +25% wheat bran), T2 (50% casein +50% wheat bran), T3 (25% casein +70% wheat bran), and T4 (100% wheat bran). A total of 150 new hatched larvae were randomly allotted to one of the five dietary treatments, with three replicates (10 hatched larvae per replicate). The standard colonies were composed of 10 hatched larvae, without distinction of sex, reared in a plastic box (14×8×5 cm) provided with aeration holes on the top. The evaluation of<em> A. diaperinus</em> larvae included growth performance and feed efficiency. Using casein and wheat bran blends for diet had a positive effect on weight gain and feed conversion ratio of <em>A. diaperinus</em> larvae, including an increase in average larval survival and average larval weight. Using casein and wheat blends (75% casein +25% wheat bran or 25% casein +70% wheat bran) as insect-rearing diet will allow effective utilization of the feed for poultry when using the edible portion of mealworms before reaching the pupae stage.</p> S.H. Kim, T.H. Chung, H.C. Park, M.J. Shin, I.G. Park, I.H. Choi ##submission.copyrightStatement## Fri, 19 Apr 2019 08:02:41 +0200 Feeding in the adult of Hermetia illucens (Diptera Stratiomyidae): reality or fiction? <p><em>Hermetia illucens</em> (L.) (Diptera Stratiomyidae) is a promising species as alternative protein source for animal feed, able to convert a wide range of organic materials. The knowledge on larval biology, development, nutritional needs, and nutritional composition is rich, while few information is available on adult traits. The aim of the present study was to investigate the influence of the adult nutrition on the survival, the longevity and the ovaries development of<em> H. illucens.</em> In detail, three food sources have been compared to starvation. Water, a sucrose solution and a protein solution were given to new emerged adults and data on longevity and ovary development were acquired. Trials were conducted on single specimen and on a cohort of adults. In all the trials, starved adults survived significantly shorter than all other thesis. When adults were maintained isolated, the survival was significantly influenced by the nourishment: longevity was longer when adults were fed with a sucrose solution, while the supply of a protein source provided a lifespan significantly higher than starvation but similar to water or to sucrose solution. In cages longevity was always shorter than in isolated adults for both males and females and the overall trend was similar to single individual trials with the exception of protein solution. Ovary development of females under different nourishment did not show differences. More studies are necessary to identify a correct nutrition considering the integration of different chemical compounds to obtain optimal adult performance in terms of longevity and reproduction.</p> D. Lupi, S. Savoldelli, M.G. Leonardi, C. Jucker ##submission.copyrightStatement## Wed, 20 Mar 2019 16:06:29 +0100 Can exotic drosophilids share the same niche of the invasive Drosophila suzukii? <p>The presence of the four exotic drosophilids <em>Chymomyza amoena</em> (Loew), <em>Drosophila suzukii</em> (Matsumura), <em>Zaprionus indianus</em> (Gupta) and <em>Zaprionus tuberculatus</em> Malloch has been investigated in different orchards in Northern Italy for two consecutive years. The presence and the abundance of the population of the drosophilid flies were surveyed with apple cider vinegar traps, fruit baited traps, and fruit collection. <em>Chymomyza amoena, Z. tuberculatus</em> and <em>D. suzukii</em> have been identified in the Apple Cider Vinegar traps in both years. Only <em>D. suzukii</em> and <em>Z. tuberculatus</em> emerged from fruit baited traps. Except for <em>D. suzukii,</em> no other exotic drosofilid was captured from the fruit collection.<em> Z. indianus</em> was never observed. Analyses of the presence of the different species, seasonal occurrence and sex ratio are provided.</p> N. Amiresmaeili, C. Jucker, S. Savoldelli, D. Lupi ##submission.copyrightStatement## Wed, 20 Mar 2019 00:00:00 +0100