scholarly journals ECOLOGICAL AND BIOLOGICAL PECULIARITIES OF THE DEVELOPMENT OF ORIBATIDE TONGS - INTERMEDIATE FARMS ANOPLOCEPHALID TABULAR HORSES IN THE REPUBLIC OF SAHA (YAKUTIA)

2018 ◽  
pp. 110-114
Author(s):  
M. V. Andreeva ◽  
Z. G. Tatarinova
Keyword(s):  
Relative Humidity ◽  
Species Composition ◽  
Reproductive Activity ◽  
Intermediate Hosts ◽  
Laboratory Conditions ◽  
Anoplocephala Perfoliata ◽  
The Republic

In the article, data on the distribution of anoplodsefalidosis of horses are given. Anoplodsefalidozy horses are widely distributed in the northern and central zones of the Republic of Sakha (Yakutia). The species composition of these cestodes is represented by 3 species: Anoplocephala magna, Anoplocephala perfoliata and Paranoplocephala mamillana. Of the 10 species of oribatid ticks found in the pastures of six species, anoploccephalidae, Achheteria coleoptrata, Scheloribates latipes, Scheloribates laevigatus, Galumna obvia, Ceratosetoides cisalpinus, Testocepheus velatus have been registered as intermediate hosts. The highest reproductive activity of oribatids occurs in May-June, which contributes to the massive infection of horses. In laboratory conditions, at a temperature of 28̊C and a relative humidity of 70-80 %, cysticercoids in mites form in 35-40 days.

scholarly journals Peculiarities of successional changes of xylotrophic basidiomycetes during decomposition of dominant tree species of forest formations of the Pitsunda-Myussera Reserve of the Republic of Abkhazia

2021 ◽  
Vol 35 ◽  
pp. 00014
Author(s):  
Sofia Khacheva
Keyword(s):  
Species Composition ◽  
Key Words ◽  
Tree Species ◽  
Xylotrophic Basidiomycetes ◽  
Xylotrophic Fungi ◽  
The Republic ◽  
Destructive Processes

The article is about the biodiversity of xylotrophic fungi of oak and hornbeam forests of Abkhazia and related destructive processes of the main forest-forming species (oak and hornbeam). The species composition of fungi subjected to phytopathogenic and saprotrophic methods of decomposition was determined. The species composition of mycobiota, causing wood xylolysis practically up to the last stages of decomposition, has been determined. Key words: biodiversity, xylotrophic fungi, succession, Republic of Abkhazia.

scholarly journals Morphobiological characteristics of trematode cercariae of the families Opisthorchiidae and Notocotylidae

2020 ◽  
Vol 49 (6) ◽  
pp. 71-78
Author(s):  
О. M. Bonina ◽  
Е. А. Serbina
Keyword(s):  
Life Cycle ◽  
Western Siberia ◽  
The Body ◽  
Parasitic Diseases ◽  
Body Structure ◽  
Intermediate Hosts ◽  
Laboratory Conditions ◽  
Bithynia Tentaculata ◽  
Morphobiological Characteristics

The results of studying the body structure of trematode cercariae of the families Opisthorchiidae and Notocotylidae and the features of their development in Western Siberia are presented. The data of long-term (1994–2019) studies on the spread of these pathogens of dangerous parasitic diseases in humans and animals are analyzed and summarized. The studies were conducted according to generally accepted methods in parasitology and hydrobiology. The species affi  liation of trematodes was determined in laboratory conditions on mature cercariae that independently left the shells of the host mollusks Bithynia tentaculata and B. troscheli. It was noted that the trematodes of the Opisthorchiidae and Notocotylidae families at the cercaria stage have the following similar features: a simple tail, pigmented eyes, and one oral sucking cup. Diagnosis of trematode cercariae of Opisthorchiidae and Notocotylidae families is possible by the following signs: the tail of the opisthorchis cercaria has a swimming membrane and is 2 times longer than the body, the tail of the notocotylid has no swimming membrane and is approximately equal in length to the body. Opisthor-chis cercariae have two pigment eyes, notocotilids – three. In the life cycle of opisthorchis, there are two intermediate hosts (bitinia and fi  sh), in the notocotylid cycle, one (bitinia). Opisthorchis cercariae have penetration glands, but notocotylids do not; the maximum daily emission of opisthorchis cercariae is ten times higher than that of notocotylids (6672 and 422 cercariae, respectively). The ability to diagnose opisthorchis and notocotilid at the cercaria stage allows the identifi cation of local foci of epidemiologically and epizootically dangerous diseases.

scholarly journals Densidade de fêmeas de Trichospilus diatraeae (Hymenoptera: Eulophidae) por pupa de Diatraea saccharalis (Lepidoptera: Crambidae)

2013 ◽  
Vol 13 ◽  
Author(s):  
Elizangela Leite Vargas ◽  
Fabricio Fagundes Pereira ◽  
Vanessa Rodrigues Ferreira Calado ◽  
Daniele Fabiana Glaeser ◽  
Bruna Aparecida Cáceres Rodrigues ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Sex Ratio ◽  
Light Regime ◽  
Climatic Chamber ◽  
Offspring Number ◽  
Diatraea Saccharalis ◽  
Laboratory Conditions ◽  
Glass Tubes

Density of parasitoid females affects their capacity to develop within the host. The number of Trichospilus diatraeae (Hymenoptera: Eulophidae) females per pupa of Diatraea saccharalis (Lepidoptera: Crambidae) was adjusted to study the effect of parasitoid production in the laboratory. Host pupae were parasitised by females of T. diatraeae at densities of 1:1, 7:1, 14:1, 21:1, 28:1 and 35:1 (parasitoid:host). The females of the parasitoid remained in contact with pupae for 24 h in glass tubes (8.5 × 2.5 cm), packed in a climatic chamber regulated at 25 ± 2ºC, 70 ± 10% relative humidity and light regime of 14 h. The percentage of parasitism and emergence of T. diatraeae on pupae of D. saccharalis was 100% in all parasitoid densities. The length of thr cycle (egg-adult) of Trichospilus diatraeae was 19.25 ± 0.22 days at a density of 1:1 and 17.00 ± 0.00 days at 35:1. The offspring number of T. diatraeae was 106.00 ± 12.38 and 514.67 ± 54.55 individuals per pupa at densities of 1:1 and 35:1, respectively. The sex ratio decreased with increasing density, ranging between 0.97 ± 0.01 and 0.89 ± 0.01 at densities of 1:1 and 35:1, respectively. The percentages of parasitism and emergence of T. diatraeae on pupae of D. saccharalis were not affected by the densities of female parasitoids. The densities of 14 to 21 females of T. diatraeae per pupa of D. saccharalis are suitable for rearing this parasitoid under laboratory conditions.

scholarly journals Phlebotomine Sand Fly Survey in the Republic of Moldova: Species Composition, Distribution and Host Preferences

2021 ◽  
Author(s):  
Tatiana Sulesco ◽  
Ozge Erisoz Kasap ◽  
Petr Halada ◽  
Gizem Oguz ◽  
Dimian Rusnac ◽  
...  
Keyword(s):  
Species Composition ◽  
Pathogen Transmission ◽  
Molecular Techniques ◽  
Protein Profiling ◽  
Sand Fly ◽  
Sand Flies ◽  
Republic Of Moldova ◽  
Maldi Tof ◽  
Peptide Mass ◽  
The Republic

Abstract Background: Phlebotomine sand flies (Diptera: Psychodiae) in the Republic of Moldova have been understudied for decades. Our study provides a first update on their occurrence, species composition and bloodmeal sources after fifty years.Methods: During 5 seasons (2013-2017), 58 localities from 20 regions were surveyed for presence of sand flies using CDC light traps and manual aspirators. Species identification was done by a combination of morphological and molecular approaches (DNA barcoding, MALDI-TOF MS protein profiling). In engorged females, host blood was identified by three molecular techniques (RFLP, cytb sequencing and MALDI-TOF peptide mass mapping). Population structure of most abundant species was studied by cox1 haplotyping, phylogenetic analyses of ITS2 and cox1 genetic markers were used to resolve relationships of other detected species.Results: In total, 780 sand flies were collected at 30 (51.7%) localities from 12 regions of Moldova. Three species were identified by an integrative morphological and molecular approach: Phlebotomus papatasi, P. perfiliewi and Adlerius sp., the first being the most abundant and widespread, markedly anthropophilic based of bloodmeal analyses and occurring also indoor, showing low structuring of population with only 5 haplotypes of cox1 detected. Distinct morphological and molecular characters of Adlerius sp. specimens suggest presence of yet undescribed species.Conclusions: Our study revealed a presence of stable sand fly population of three species in Moldova that pose a nuisance by biting as well as potential thread of pathogen transmission and shall be further studied.

scholarly journals Biology of Anicla infecta (Ochsenheimer, 1816) (Lepidoptera, Noctuidae, Noctuinae), under laboratory conditions

2001 ◽  
Vol 61 (4) ◽  
pp. 661-666 ◽  
Author(s):  
J. A. TESTON ◽  
A. SPECHT ◽  
E. CORSEUIL
Keyword(s):  
Relative Humidity ◽  
Standard Error ◽  
Lolium Multiflorum ◽  
Economic Importance ◽  
Egg Laying ◽  
Adult Longevity ◽  
Environmental Chamber ◽  
Laboratory Conditions ◽  
The Mean ◽  
Lepidoptera Noctuidae

Larvae of Anicla infecta (Ochsenheimer, 1816) (Noctuidae) feed upon many grasses and may be harmful to cereals and fodder of economic importance. This study was developed aiming to contribute to knowledge of the biology of this species. The rearing was done in an environmental chamber with the following settings: temperature of 25 ± 1ºC; relative humidity of 70% <FONT FACE=Symbol>±</FONT> 10%, and photoperiod of L14: D10. The larvae fed on ryegrass, Lolium multiflorum Lam. The results express the mean and standard error for the length of every stage in days. For each stage we observed the following time of development: egg 3.2 <FONT FACE=Symbol>±</FONT> 0.09; larvae 18.7 <FONT FACE=Symbol>±</FONT> 0.07; pre-pupae 3.3 <FONT FACE=Symbol>±</FONT> 0.04; pupae 12.6 <FONT FACE=Symbol>±</FONT> 0.14; and adult longevity was 12.1 <FONT FACE=Symbol>±</FONT> 1.03. Also the pre-egg-laying period was 4.4 <FONT FACE=Symbol>±</FONT> 0.59; the egg-laying period was 8.1 <FONT FACE=Symbol>±</FONT> 0.84; and the post-egg-laying period was 0.3 <FONT FACE=Symbol>±</FONT> 0.14. The mean number of egg-laying cycles per female was 6.7 <FONT FACE=Symbol>±</FONT> 0.73; that of eggs per cycle was 77.5 <FONT FACE=Symbol>±</FONT> 4.37; and total eggs per female was 521.4 <FONT FACE=Symbol>±</FONT> 47.36.

scholarly journals Diversity and Species Composition of Subaerial Algal Communities in Forested Areas of Meghalaya, India

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Diana Kharkongor ◽  
Papiya Ramanujam
Keyword(s):  
Relative Humidity ◽  
Species Composition ◽  
Algal Species ◽  
Sacred Grove ◽  
Algal Communities ◽  
Tree Barks ◽  
Significant Difference ◽  
Forested Areas ◽  
Mixed Plantation ◽  
Disturbed Forest

The study deals with a comparative study on diversity and species composition of subaerial algal communities from tree barks of closed undisturbed sacred grove, mixed plantation, and open disturbed forest. A total of 85 taxa had been recorded, 30 cyanobacteria and 55 algal species belonging to six classes of algae. Sacred grove harboured the highest subaerial algal diversity compared to those of plantation and open disturbed forest. There was a strong significant difference in species composition among the three different sampling areas. High number of diatoms with 14 species was recorded in sacred grove. Cyanobacteria with 22 species were the frequent group in disturbed forest whereas Trentepohliales dominated in plantation. Canonical correspondence analysis confirmed that high photon irradiance favored the growth of cyanobacteria in disturbed forest. The abundance of Trentepohliales members correlated to high rainfall and photon irradiance. High diversity and presence of many diatom species in undisturbed Mawphlang sacred grove were associated with low photon irradiance and high relative humidity and could also be due to a presence of suitable substrata formed by the growth of mosses. Sunlight, relative humidity, and rainfall were the important factors which played a major role in determining the diversity and distribution of subaerial algal communities.

scholarly journals Amblyomma nodosum (Neumann, 1899): observations on life cycle under laboratory conditions

2015 ◽  
Vol 24 (3) ◽  
pp. 357-360 ◽  
Author(s):  
Michele da Costa Pinheiro ◽  
Elizabete Captivo Lourenço ◽  
Iwine Joyce Barbosa de Sá-Hungaro ◽  
Kátia Maria Famadas
Keyword(s):  
Life Cycle ◽  
Relative Humidity ◽  
Environmental Conditions ◽  
Oryctolagus Cuniculus ◽  
Adult Stage ◽  
Immature Stages ◽  
Experimental Conditions ◽  
Laboratory Conditions ◽  
Natural Hosts

The natural hosts of Amblyomma nodosum in the immature stages are a variety of birds and the anteater in the adult stage. However, so far no data have been published about this tick’s life cycle. To fill this gap, a record was made of its development under laboratory conditions. All the procedures were controlled in a BOD chamber set at 27±1 °C and 80±10% relative humidity and scotophase. The parasitic stages were raised on rabbits (Oryctolagus cuniculus Linnaeus, 1758), from which more than 50% of larvae and nymphs were recovered, although only a small portion performed ecdysis. The adults did not fixed on the rabbits, which suggests that the experimental conditions were unsuitable for the requirements of this species. The data obtained here indicate that A. nodosum is highly dependent on its host and environment whereas under laboratory conditions and host chosen for the study was not obtained satisfactory results and new studies with different hosts and new environmental conditions should be elaborated.

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