scholarly journals The potential of different fruit species as food for Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae)

2013 ◽  
Vol 35 (4) ◽  
pp. 1025-1031 ◽  
Author(s):  
Camila Fediuk de Castro Guedes ◽  
Lúcia Massutti de Almeida

Harmonia axyridis was detected for the first time in Brazil in 2002. Since then, it has been recorded from the South to the Midwest of the country. Until now, almost all the registered cases were associated with the presence of aphids, its preferred source of food. Due to the occurrence of this species in areas of fruit growing in the South and Southeast of Brazil, the aim of this study was to analyze the preference and use of three different cultivars of fruit. The tests were set at 25ºC ± 1ºC, RH 70% ± 10%, and in a photophase of 12 h and with apples (Gala and Fuji), grapes (Niágara and Rubi), and pears (Williams and Asian). In the undamaged fruit experiment, the insects did not cause any noticeable damage. In the damaged and undamaged fruit experiment, a higher and statistically significant percentage of H. axyridis adults were found in the three damaged fruits. In the different cultivar experiment the Niágara grape, the Gala apple, and the Williams pear were significantly preferred by H. axyridis adults. These results may help in the management of this insect, preventing damage, which have been observed in other places where H. axyridis was introduced.

2021 ◽  
Vol 4 (4) ◽  
pp. 3-6
Author(s):  
Alexey S. Sazhnev ◽  
Dmitry V. Vlasov ◽  
Aleksander A. Rusinov ◽  
Viktor D. Titov

The paper gives information on the invasion of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) into the north of the European part of Russia. The Asian ladybird is recorded for the first time from the Novgorod and Yaroslavl Regions. All records of this alien species from European Russia and the Northern Caucasus are listed.


1999 ◽  
Vol 49 ◽  
pp. 11-26 ◽  
Author(s):  
Oktay Belli

The citadel of Van (Tushpa) was the main settlement of the Urartian kingdom, which dominated the regions of eastern Anatolia, Caucasia and northwestern Iran between the ninth and sixth centuries BC. Lake Van borders the site on the west, while to the south is the eastern extension of the Taurus mountains, stretching east to west and reaching 3000-3500m in height. These steep mountains, rising like a natural wall between the Urartian city and its greatest enemy the Assyrian kingdom to the south, provided an advantageous defensive feature. The capital city Tushpa, which is 1.5km east of Lake Van, and the Van plain itself are bordered on the east by the 3200m high Erek mountain. Erek mountain surrounds the east of the plain like a crescent, halting the cold winds as well as providing the water supply for agriculture in the Van plain from its rich water sources. Although the soil of the Van plain, which is 1750m above sea level, is agriculturally fertile, for many crops it is barely possible to conduct successful agriculture without irrigation. The Van plain, 9km wide and 17km long, is poor in water resources, as is well known. The water sources around Erek mountain, amongst the richest in the east Anatolian region, were used effectively in the period of the Urartian kingdom for the first time. Almost all the irrigation structures built on and around Erek mountain were built in order to irrigate the Van plain to the east of Lake Van. Most of the constructed dams and reservoirs, totalling more than ten, are still in use today, with minor restoration, despite being more than 2,700 years old. If we consider that few irrigation facilities were constructed at other water sources in the east Anatolian region, it underlines the importance of these water sources at Erek mountain and its slopes for the plain of Van. It seems that the rich water sources around Erek mountain constituted another positive condition for the foundation of the capital city of the Urartian kingdom in the Van plain.


2016 ◽  
Vol 6 ◽  
pp. 40-41
Author(s):  
Aleksandra Gligorović ◽  
Halil Ibrahimi ◽  
Bogić Gligorović

In this paper the alien coccinellid Harmonia axyridis (Pallas, 1773) is reported for the first time for Montenegro.


2007 ◽  
Vol 5 (2) ◽  
pp. 25-36 ◽  
Author(s):  
Alla V Blehman

The polymorphism of pronotum patterns in ladybird beetle Harmonia axyridis was studied, 14 phenotypes of this character were identified for the first time. The contingency of pronotum variability with elytral patterns were investigated. For the first time the sexual dimorphism for pronotum patterns was revealed, and its peculiarity was analyzed. The analysis of geographic variability of pronotum patterns confirms the hypothesis for existence of two subspecies in H. axyridis.


2017 ◽  
Vol 51 ◽  
pp. 232-241 ◽  
Author(s):  
G. Ya. Doroshina ◽  
E. Yu. Kuzmina ◽  
I. A. Nikolajev

Information on the Sphagnum mosses of the South Ossetia is generalized, the resulted list is presented. Nine species of Sphagnum are included in the list, whereabouts data and references to the publications are given, and the presence of a sample in the Herbarium of the Komarov Botanical Institute RAS (LE) is noted. The species Sphagnum platyphyllum (Lindb. ex Braithw.) Warnst. rarely occurring in the Caucasus is reported in the South Ossetia for the first time. The species was found in the Caucasus, South Ossetia, at the side of the Ertso Lake (42°28ʹN, 43°45ʹE), 1720 m a. s. l., among sedge thickets at the margin of the overgrowing lake. The peculiarities of its occurrence and ecological conditions are considered. Its distribution in the Caucasus and in the world is discussed.


2013 ◽  
Vol 47 ◽  
pp. 215-221 ◽  
Author(s):  
A. B. Ismailov ◽  
G. P. Urbanavichus

49 lichen species and 2 species of non-lichenized saprotrophic fungi are recorded for the first time in beech forests of the south-eastern part of piedmont Dagestan. Among them, 34 species and 9 genera are new to Dagestan Republic, and 2 species, Diplotomma pharcidium (Ach.) M. Choisy and Rinodina albana (A. Massal.) A. Massal., are new to Caucasus Mountains.


2020 ◽  
Vol 29 (1) ◽  
pp. 75-76
Author(s):  
V.B. Golub ◽  
E.V. Sergeeva
Keyword(s):  

The lacebug species Agramma atricapillum (Spinola, 1837) (Heteroptera: Tingidae) is recorded in the Asian part of Russia, namely in the south of the Tyumen’ Province, for the first time.


2020 ◽  
Vol 99 (3) ◽  
pp. 495-519
Author(s):  
Е. Б. ЛОПАТИНА ◽  
◽  
С. Я. РЕЗНИК ◽  
А. Н ОВЧИННИКОВ ◽  
А. А. ОВЧИННИКОВА ◽  
...  

2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Tebogo Mokgehle ◽  
Ntakadzeni Madala ◽  
Wilson Gitari ◽  
Nikita Tavengwa

AbstractSolanum plants (Solanaceae) are renowned source of nutraceuticals and have widely been explored for their phytochemical constituents. This work investigated the effects of kosmotropic and chaotropic salts on the number of phytochemicals extracted from the leaves of a nutraceutical plant, Solanum retroflexum, and analyzed on the ultra-performance liquid chromatography hyphenated to a quadrupole time of flight mass spectrometer (UPLC-QTOF-MS) detector. Here, a total of 20 different compounds were putatively characterized. The majority of the identified compounds were polyphenols and glycoalkaloids. Another compound, caffeoyl malate was identified for the first time in this plant. Glycoalkaloids such as solanelagnin, solamargine, solasonine, β-solanine (I) and β-solanine (II) were found to be extracted by almost all the salts used herein. Kosmotrope salts, overall, were more efficient in extracting polar compounds with 4 more polyphenolic compounds extracted compared to the chaotropes. Chaotropes were generally more selective for the extraction of less polar compounds (glycoalkaloids) with 3 more extracted than the kosmotropes. The chaotrope and the kosmotrope that extracted the most metabolites were NaCl and Na2SO4, respectively, with 12 metabolites extracted for each salt. This work demonstrated that a comprehensive metabolome of S. retroflexum, more than what was previously reported on the same plant, can be achieved by application of kosmotropes and chaotropes as extractants with the aid of the Aqueous Two Phase Extraction approach. The best-performing salts, Na2SO4 or NaCl, could potentially be applied on a commercial scale, to meet the ever-growing demand of the studied metabolites. The Aqueous Two Phase Extraction technique was found to be efficient in simultaneous extraction of multiple metabolites which can be applied in metabolomics.


Horticulturae ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. 206
Author(s):  
Cheng Zhang ◽  
Yue Su ◽  
Yanyou Wu ◽  
Haitao Li ◽  
Ying Zhou ◽  
...  

The nutrient metabolism, growth and development of plants are strongly affected by its nutrient plunder, and plants have different adaptive mechanisms to low-nutrient environments. The electrophysiological activities involve almost all life processes of plants. In this study, the active transport flow of nutrient (NAF) and nutrient plunder capacity (NPC) of plants were defined based on leaf intrinsic impedance (IZ), capacitive reactance (IXc), inductive reactance (IXL) and capacitance (IC) to evaluate the nutrient plunder capacity of plants for the first time. The results indicate that Orychophragmus violaceus had higher (p < 0.01) NPC and IC and lower (p < 0.01) IR, IXc, IXL and IZ as compared to Brassica napus L., which supports a superior ion affinity and that it could be better adapted to low-nutrient environments. UAF and NPC of plants exhibited good correlations with crude protein, crude ash and water content, and precisely revealed the plunder capacity and adaptive strategies of plants to nutrients. The present work highlights that O. violaceus had superior NPC and ion affinity compared with B. napus, and provided a novel, rapid, reliable method based on the plant’s electrophysiological information for real-time determination of the nutrient plunder capacity of plants.


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