Genetic tests of the taxonomic status of the ring-tailed lemur (Lemur catta) from the high mountain zone of the Andringitra Massif, Madagascar

2000 ◽  
Vol 252 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Anne D. Yoder ◽  
Jodi A. Irwin ◽  
Steven M. Goodman ◽  
Soava V. Rakotoarisoa
Keyword(s):  
Taxonomic Status ◽  
Lemur Catta ◽  
High Mountain ◽  
Genetic Tests ◽  
Mountain Zone

scholarly journals A high mountain population of the ring-tailed lemur Lemur catta on the Andringitra Massif, Madagascar

Oryx ◽  
1996 ◽  
Vol 30 (4) ◽  
pp. 259-268 ◽  
Author(s):  
Steven M. Goodman ◽  
Olivier Langrand
Keyword(s):  
Deciduous Forest ◽  
Local Population ◽  
Taxonomic Status ◽  
Lemur Catta ◽  
Food Plants ◽  
High Mountain ◽  
Exposed Rock ◽  
Dry Deciduous Forest ◽  
Pelage Coloration ◽  
Mountain Population

The ring-tailed lemur Lemur catta is generally considered to be a species of dry deciduous forest, gallery forest and spiny thorn scrub at relatively low altitudes. During a survey of the summit zone of the Andringitra Massif, one of the most climatically extreme areas on Madagascar, we recorded this species above the tree-line at 2520 m in an area composed mostly of exposed rock, low ericoid bush and subalpine vegetation. Information was collected on food plants consumed by this species. This pelage coloration of the local population of L. catta differed from museum specimens and photographs taken from other areas of this species's range. The taxonomic status of the Andringitra population is in need of further study.

FEATURES OF THE REPRODUCTIVE FUNCTION OF KARACHAY GOATS DEPENDING ON DIFFERENT GEOGRAPHICAL AREAS OF BREEDING

2021 ◽  
pp. 114-122
Author(s):  
М.I. SELIONOVA ◽  
◽  
Т.V. МАМОNTOVA ◽  
А.–М.М. AYBAZOV
Keyword(s):  
Reproductive Function ◽  
Low Fertility ◽  
High Mountain ◽  
North Caucasus ◽  
Potential Fecundity ◽  
Important Conclusion ◽  
Mountainous Regions ◽  
The North ◽  
Mountain Zone ◽  
Goat Population

In recent years, goat breeds with a dairy-meat-wool or combined productivity type, represented by local breeds that are bred mainly in the foothills and mountainous regions of the North Caucasus, Altai, Tyva and Khakassia, have become increasingly widespread in Russia. The Karachay goat population is the most interesting for research, since in their breeding was aimed at obtaining animals with a number of unique productive characteristics and capable of producing the required outputs under the harsh conditions of the mountain and foothill zones of the Caucasus. In view of the limited research on these animals, in particular their reproductive functions, the aim of this study was to investigate the natural implementation of the reproductive function of the Karachay goats in different geographical areas of breeding. There are slight differences in some parameters of Karachay goat reproduction in high mountain zone (from 2000 m a.s.l.) and middle mountain zone (1000–1500 m a.s.l.). An important conclusion is that the recognized low fertility of the Karachay goats is not genetically determined. Analyzing the number of ovulations and fresh yellow bodies in the ovaries by laparoscopy using Karl Storz (Germany) endoscopic equipment, the authors found a potential fecundity of 3.1 (2.8 to 3.4).

Comprehensive population viability study of a rare endemic shrub from the high mountain zone of the Canary Islands and its conservation implications

2019 ◽  
Vol 47 ◽  
pp. 65-76 ◽  
Author(s):  
Manuel V. Marrero ◽  
Gerard Oostermeijer ◽  
Manuel Nogales ◽  
Thomas Van Hengstum ◽  
Isabel Saro ◽  
...  
Keyword(s):  
Canary Islands ◽  
Population Viability ◽  
High Mountain ◽  
Conservation Implications ◽  
Mountain Zone ◽  
Viability Study ◽  
Rare Endemic

scholarly journals SYMBIOTIC ACTIVITY OF MEDICAGO VARIA MART. DEPENDING ON THE TYPE OF NITROGEN NUTRITION

2020 ◽  
Vol 4 (24) ◽  
pp. 72-80
Author(s):  
M.Yu. Kozyreva ◽  
◽  
L.Zh. Basieva ◽  
A.Kh. Kozyrev ◽  
◽  
...  
Keyword(s):  
Field Experiments ◽  
Specific Activity ◽  
Nitrogen Nutrition ◽  
Molecular Nitrogen ◽  
Nitrogen Fertilizers ◽  
High Mountain ◽  
Nodule Bacteria ◽  
Industrial Strain ◽  
Symbiotic System ◽  
Mountain Zone

The issue of the use of mineral forms of nitrogen for legumes is still a source of debate among scientists. Under the environmental conditions of the foothill zone of RNO-Alania, the field experiments were laid to study the activity of the symbiotic system and the productivity of the alfalfa depending on the type of nitrogen nutrition and the presence of a virulent active strain of rhizobia. The research was carried out in 2017– 2019. Soil – chernozems leached. Objects: crops of Medicago varia Mart.; industrial strain of rhizotorphin 425a; inoculum of high-mountain strains of nodule bacteria; starting doses of nitrogen fertilizers. The dimensions of the symbiotic apparatus were studied according to the G.S. Posypanov method. The specific activity of symbiosis was 4.2 to 9.0 mg/kg. The maximum amount of air nitrogen (456.1 kg/ha) for three years of experiments was fixed by the symbiotic system of alfalfa in the variant with pre-sowing seed inoculation with high-mountain strains of nodule bacteria. This indicates their higher activity and competitiveness compared to the industrial strain of rhizotorphin 425a and indigenous strains of rhizobia from the pre-mountain zone of RNO-Alania. Mineral forms of nitrogen significantly inhibited the activity of the symbiotic system. As a result, the amount of fixed nitrogen decreased by 3.5–9.0 %. In the pre-mountain zone, under natural conditions, the growth and development of plants were provided with atmospheric nitrogen by 66 %, the rest of the need for the element (34 %) they satisfied with soil nitrogen. The maximum involvement of molecular nitrogen of the atmosphere in the biological cycle was distinguished by the variant with pre-sowing inoculation of seeds by virulent active strains of rhizobia, in which the share of air nitrogen participation in plant nutrition averaged 71–73 % over the three years of research.

Results of pasture monitoring research

2018 ◽  
Vol 22 (03) ◽  
pp. 41-45
Author(s):  
Bolormaa D ◽  
Lkhagvasuren D ◽  
Gantuya J ◽  
Gankhuyag L ◽  
Altanzul R
Keyword(s):  
Plant Species ◽  
Plant Cover ◽  
Forest Steppe ◽  
High Mountain ◽  
Ecological Zones ◽  
Mountain Zone ◽  
Arid Steppe ◽  
Pasture Plant ◽  
The Impact ◽  
Zones And Subzones

Rangeland deterioration and restoration management has been one of the prominent issues. The present study focuses on the composition, cover, and yields accumulation of rangeland plant species from different ecological zones and subzones. Pasture yield in Mongolia varies in ecological zones and subzones (p≥0.001), so 39 sheep, during the summer, comfortably graze in one-hectare area in high mountain zone, - 72 in forest steppe, 21 in steppe and 13 in arid steppe area respectively. Whereas types and cover of plant species in high mountain rangelands are more than other areas, yield accumulation is most in forest steppe. The impact of climate change has dramatically increased recent years, considerably affecting on pasture plant cover and yield. During a dry season or period of drought, amount of yield reduces 40% in high mountain zone; 49% in forest steppe, 52% in semi-arid steppe and 55% in arid steppe. Since rangeland productivity varies due to the nature and climate in the ecological zones and subzones, pasture shall be utilized under appropriate policy that regulates this depending on its capacity, resource and natural and climate feature of area.

scholarly journals Taxonomic Position of Entomoparasitic Nematodes Isolated from Fleas in Gorno-Altai High-Mountain Natural Plague Focus

2018 ◽  
pp. 79-83
Author(s):  
E. G. Oglodin ◽  
E. G. Tokmakova ◽  
K. A. Nikiforov ◽  
A. V. Denisov ◽  
N. A. Sharapova ◽  
...  
Keyword(s):  
Taxonomic Status ◽  
Close Relation ◽  
Steppe Zone ◽  
Nucleotide Sequences ◽  
High Mountain ◽  
Separate Branch ◽  
Ribosomal Operon ◽  
Entomoparasitic Nematodes ◽  
First Time ◽  
Comparative Phylogenetic Analysis

Objective of the study was to investigate entomoparasitic nematodes from rodent fleas, collected in Gorno-Altai high-mountain natural plague focus in 2016–2017, with identification of their taxonomic status. Materials and methods. Given are the results of morphological and genetic analysis of entomoparasitic nematodes – parasites of fleas Amphipsylla primaris primaris living on flat-headed high-mountain voles Alticola strelzovi, fleas Rhadinopsylla li transbaicalica of Daurian pika Ochotona dauurica, fleas Rhadinopsylla dahurica, collected at the burrows of the rodents. Results and conclusions. Identified have been nucleotide sequences of ITS2 spacer region of ribosomal operon in entomoparasitic nematodes of three flea species: Amphipsylla primaris primaris, Rhadinopsylla li transbaicalica, and Rhadinopsylla dahurica. Based on comparative phylogenetic analysis and identified high percentage of homology of the stated nucleotide sequences (92–99 %), appurtenance to Rubzovinema spp. species and close relation to earlier proposed by us multi-host species Rubzovinema polyxenica from C. tesquorum, A. rossica, and C. secundus fleas from Volga-Ural steppe plague focus has been established. For the first time ever separate branch of evolution of entomoparasitic nematodes – flea parasites, represented by Rubzovinema ssp., has been identified. Determined has been wide spread of Rubzovinema ssp. nematodes in biocenoses of steppe zone of Russia across Precaspian territory and Altai Mountains. 

scholarly journals Trends in plant population pattern changes under natural and man-induced ecosystem transformations of the high mountain zone in the Ukrainian Carpathians

2015 ◽  
Vol 9 (2) ◽  
pp. 169-180 ◽  
Author(s):  
V. H. Kyyak ◽  
◽  
V. M. Bilonoha ◽  
R. I. Dmytrakh ◽  
L. V. Gynda ◽  
...  
Keyword(s):  
Plant Population ◽  
High Mountain ◽  
Mountain Zone ◽  
Population Pattern
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