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- Campolo, O., et al.
(författare)
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Bees visiting flowers of Thymus longicaulis (Lamiaceae)
- 2016
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Ingår i: Plant Biosystems. - : TAYLOR & FRANCIS LTD. - 1126-3504 .- 1724-5575. ; 150:6, s. 1182-1188
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to investigate the bee fauna foraging on Thymus longicaulis flowers. Samplings were conducted walking along a transect during the T. longicaulis blooming period (April-June). A total of 547 bee specimens, belonging to 40 different species, were recorded during the survey. Apis mellifera and Bombus terrestris were the most abundant visitors that foraged on thyme. Pollen grains collected on the bodies of the bees suggest that these pollinators may play an important role in the pollination of this plant.
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- Campolo, O., et al.
(författare)
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Population Dynamics and Temperature-Dependent Development of Chrysomphalus aonidum (L.) to Aid Sustainable Pest Management Decisions
- 2014
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Ingår i: Neotropical Entomology. - : ENTOMOLOGICAL SOC BRASIL. - 1519-566X .- 1678-8052. ; 43:5, s. 453-464
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Tidskriftsartikel (refereegranskat)abstract
- The increasing worldwide trades progressively led to decreased impact of natural barriers on wild species movement. The exotic scale Chrysomphalus aonidum (L.) (Hemiptera: Diaspididae), recently reported on citrus in southern Italy, may represent a new threat to Mediterranean citriculture. We studied C. aonidum population dynamics under field conditions and documented its development under various temperatures. To enable describing temperature-dependent development through the use of linear and non-linear models, low temperature thresholds and thermal constants for each developmental stage were estimated. Chrysomphalus aonidum was able to perform four generations on green parts (leaves, sprouts) of citrus trees and three on fruits. In addition, an overall higher population density was observed on samples collected in the southern part of the tree canopy. Temperature had a significant effect on the developmental rate; female needed 625 degree days (DD) to complete its development, while male needed 833 DD. The low threshold temperatures, together with data from population dynamics, demonstrated that C. aonidum is able to overwinter as second instar and as an adult. The results obtained, validated by those collected in the field, revealed few differences between predicted and observed dates of first occurrence of each C. aonidum instar in citrus orchards. Data on C. aonidum phenology and the definition of the thermal parameters (lower and upper threshold temperatures, optimum temperature, and the thermal constant) by non-linear models could allow the estimation of the occurrence in the field of each life stage and would be helpful in developing effective integrated control strategies.
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- Malacrinò, Antonino, et al.
(författare)
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Fumigant and Repellent Activity of Limonene Enantiomers Against Tribolium confusum du Val
- 2016
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Ingår i: Neotropical Entomology. - : ENTOMOLOGICAL SOC BRASIL. - 1519-566X .- 1678-8052. ; 45:5, s. 597-603
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Tidskriftsartikel (refereegranskat)abstract
- The use of pesticides, as carried out in the last 50 years, caused several negative environmental and human health consequences, leading to the development of alternative techniques to control pests, such as the use of compounds of plant origin. In this study, we assessed the fumigant and repellent activity of both the enantiomers of limonene, a monoterpene usually found in many plant species, against Tribolium confusum du Val. We tested both molecules at different doses, air temperatures, and in absence and presence of flour. R-(+)-limonene resulted more effective than S-(-)-limonene; indeed, it was able to reach 100% of efficacy at a concentration of 85 mg/L air when tested at different temperatures without flour. Data showed a positive relationship between efficacy and temperature, and a negative effect of the presence of debris on the bioactivity of limonene. Furthermore, repellency trials reported a higher activity of R-(+)-limonene compared to the other enantiomer.
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- Malacrinò, Antonino, et al.
(författare)
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Instar- and host-associated differentiation of bacterial communities in the Mediterranean fruit fly Ceratitis capitata
- 2018
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Ingår i: PLOS ONE. - : Plos. - 1932-6203. ; 13:3
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Tidskriftsartikel (refereegranskat)abstract
- Microorganisms are acknowledged for their role in shaping insects' evolution, life history and ecology. Previous studies have shown that microbial communities harbored within insects vary through ontogenetic development and among insects feeding on different host-plant species. In this study, we characterized the bacterial microbiota of the highly polyphagous Mediterranean fruit fly, Ceratitis capitata (Diptera: Tephritidae), at different instars and when feeding on different host-plant species. Our results show that the bacterial microbiota hosted within the Mediterranean fruit fly differs among instars and host-plant species. Most of the bacteria harbored by the Mediterranean fruit fly belong to the phylum Proteobacteria, including genera of Alphaproteobacteria such as Acetobacter and Gluconobacter; Betaprotobacteria such as Burkholderia and Gammaproteobacteria such as Pseudomonas.
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- Trimarchi, H, et al.
(författare)
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Elevated pro-brain natriuretic peptide, troponin T and malnutrition inflammatory score in chronic hemodialysis patients with overt cardiovascular disease
- 2011
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Ingår i: Nephron. Clinical practice. - : S. Karger AG. - 1660-2110. ; 117:3, s. C198-C205
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Tidskriftsartikel (refereegranskat)abstract
- <i>Background:</i> We assessed the relationship between pro-brain natriuretic peptide (pro-BNP), troponin T (TropT) and nutritional status. <i>Methods:</i> A total of 48 chronic hemodialysis patients were grouped according to the presence [group A (GA); n = 24] or not [group B (GB)] of cardiovascular disease. <i>Results:</i> Compared to GB subjects, GA subjects were older, had been on hemodialysis for a longer period and had higher prevalences of vascular grafts, hypertension and elevated C-reactive protein (CRP) [GA vs. GB: 1.1 (range 0.1–32.9) vs. 0.4 (0–28.1) mg/dl; p = 0.028], malnutrition inflammatory score (MIS) (GA vs. GB: 7.50 vs. 4.00; p = 0.001), pro-BNP [GA vs. GB: 6,760 (601–103,200) vs. 686 (75–83,700) pg/ml; p < 0.001] and TropT [GA vs. GB: 0.3650 (0.011–0.199) vs. 0.010 (0.0–0.290) ng/ml; p = 0.002]. Pro-BNP correlated with TropT (rho 0.539; p < 0.001), MIS (rho 0.502; p < 0.0001), homocysteine (rho 0.321; p = 0.13) and CRP (rho 0.511; p < 0.0001). Pro-BNP levels were lower in GB patients as the body mass index increased; the opposite occurred in GA. <i>Conclusions:</i> Patients with cardiovascular disease had elevated pro-BNP and TropT levels. In patients without cardiovascular disease, malnutrition and inflammation were associated with vascular prostheses, while pro-BNP was lower in obese patients.
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