scholarly journals Morphometric characteristics of inflorescences and phenology of introduced plants of the genus Crataegus L. in the Kola subarctic conditions

2019 ◽  
Vol 8 (3) ◽  
pp. 42-46
Author(s):  
Olesya Evgenievna Zotova ◽  
Oksana Aleksandrovna Goncharova
Keyword(s):  
Short Duration ◽  
Early Onset ◽  
Linear Growth ◽  
Average Duration ◽  
Vegetation Period ◽  
Morphometric Parameters ◽  
Morphometric Characteristics ◽  
Introduced Plants ◽  
Timely Completion ◽  
Northern Cities

This paper presents phenological development of seven introduced species of the genus Crataegus L. in the Kola North. The studied hawthorn species are characterized by early onset of vegetation, short duration of linear growth of shoots and a short vegetation period. Timely completion of growth processes and lignification of shoots contribute to successful adaptation of Crataegus plants under the conditions of introduction. The authors study morphometric parameters of flowers and inflorescences, decorative qualities, size and density of the inflorescence, the number of flowers in the inflorescence, the diameter of the flowers. The most decorative species of Crataegus during flowering are selected. The plants of the studied hawthorns are characterized by the average duration of the prefloral period, annual / irregular flowering. The most decorative species during flowering are the ones with larger flowers and inflorescences: C . maximoviczii and C . dahurica . Species with a large number of flowers are characterized by a denser inflorescence. Species with smaller flowers form smaller inflorescences and vice versa. In the conditions of the Kola Subarctic, the number of flowers in the inflorescence depends mainly on the specific features. C . maximoviczii is recommended for gardening in northern cities.

A new look on the morphometric characteristics of Congridae leptocephali from the southern Adriatic Sea

2021 ◽  
pp. 1-5
Author(s):  
M. Mandić ◽  
I. Leonori ◽  
A. De Felice ◽  
S. Gvozdenović ◽  
A. Pešić
Keyword(s):  
Fish Species ◽  
Adriatic Sea ◽  
Pelagic Fish ◽  
Morphometric Parameters ◽  
Morphological Features ◽  
Morphometric Characteristics ◽  
Small Pelagic Fish ◽  
Acoustic Surveys ◽  
Western Side ◽  
Conger Conger

Abstract Anguillid leptocephali of three Congridae species (Conger conger, Ariosoma balearicum and Gnathophis mistax) were caught as bycatch of pelagic trawls during acoustic surveys targeting small pelagic fish species in the southern Adriatic Sea, carried out under the framework of the Italian MEDIAS project (western side) and its extension in the ambit of the FAO AdriaMed project (eastern side). Results refer to the findings of Congridae leptocephali during surveys conducted in 2011, 2014, 2015 and 2016. A total of 25 specimens were caught and analysed (morphological features and pigmentation patterns). Leptocephali of Conger conger were found in the range of 8.4–13.1 cm total length (TL) (between 50 and 132 m depth), Ariosoma balearicum from 9.7–12.2 cm TL (between 50 and 128 m depth) and for Gnathophis mystax in the range from 6.4–11.7 cm TL (between 40 and 79 m depth). The results indicate that the southern Adriatic Pit could be the spawning area of these species in the Adriatic Sea. Present data represent a contribution to existing knowledge about the ecology of leptocephali from the Congridae family in the southern Adriatic Sea, and also indicate the existence of differences in morphometric parameters between different areas, that is, the possibility of the existence of new geographic lines within the genus Ariosoma in the Adriatic Sea.

scholarly journals Linear growth of lateral shoots of the introduced plants of the species Crataegus L. at the Polar – Alpine Botanical Garden and Institute

2019 ◽  
Vol 14 (14) ◽  
pp. 298-305
Author(s):  
Oxana Alexandrovna Goncharova ◽  
Irina Nikolaevna Lipponen ◽  
Elena Yurievna Poloskova
Keyword(s):  
Linear Growth ◽  
Botanical Garden ◽  
Introduced Plants ◽  
Lateral Shoots

scholarly journals Morphometric characteristics of the mucous membrane and the cartilaginous component of the larynx are normal at different times during the experimental opioid effect and during withdrawal

Morphologia ◽  
2021 ◽  
Vol 15 (2) ◽  
pp. 25-30
Author(s):  
K.P. Ivasivka ◽  
Ye.V. Paltov ◽  
Z.Z. Masna ◽  
I.V. Chelpanova
Keyword(s):  
Mucous Membrane ◽  
Scientific Literature ◽  
Opioid Analgesic ◽  
Morphometric Parameters ◽  
Morphometric Characteristics ◽  
Prolonged Administration ◽  
Laryngeal Mucosa ◽  
Opioid Drugs ◽  
Conventional Methods ◽  
Sexually Mature

Background. The problem of uncontrolled use of opioid drugs is extremely relevant based on the data of domestic and world statistics which are covered in the scientific literature. That is why the study of indicators of morphometric characteristics of the laryngeal mucosa under opioid exposure under experimental opioid exposure will be of interest to both morphologists and practical otorhinolaryngologists. Objective: To study the morphometric parameters of the laryngeal mucosa in normal at different times of the experimental opioid effect and its cancellation. Methods. The material of the study were sexually mature, outbred rats - males in the amount of 61 animals, weighing 80 - 135 g, aged 4.5 - 7.5 months. Histological specimens were prepared according to conventional methods. All morphometric studies were performed using primary (unedited) photographs taken on a Meiji MT4300 LE microscope, Canon EOS 550D x100 lens. All statistical calculations were performed using RStudio v. 1.2.5042. Results. Throughout the experiment, the change of morphometric parameters of the laryngeal mucosa with signs of wavy growth and decline was clearly observed at all times. More positive was the dynamics of morphometric parameters after the abolition of the opioid analgesic, which hypothetically suggests the process of recovery of the mucosa, even after prolonged administration of the opioid.

scholarly journals Prolonged Dry Episodes over the Conterminous United States: New Tendencies Emerging during the Last 40 Years

2008 ◽  
Vol 21 (9) ◽  
pp. 1850-1862 ◽  
Author(s):  
Pavel Ya Groisman ◽  
Richard W. Knight
Keyword(s):  
United States ◽  
Average Duration ◽  
Warm Season ◽  
Vegetation Period ◽  
Total Precipitation ◽  
Eastern United States ◽  
The Past ◽  
The Mean ◽  
Rain Events ◽  
Precipitation Events

Abstract A disproportionate increase in precipitation coming from intense rain events, in the situation of general warming (thus, an extension of the vegetation period with intensive transpiration), and an insignificant change in total precipitation could lead to an increase in the frequency of a potentially serious type of extreme events: prolonged periods without precipitation (even when the mean seasonal rainfall totals increase). This paper investigates whether this development is already occurring during the past several decades over the conterminous United States, for the same period when changes in frequency of intense precipitation events are being observed. Lengthy strings of “dry” days without sizeable (>1.0 mm) precipitation were assessed only during the warm season (defined as a period when mean daily temperature is above the 5°C threshold) when water is intensively used for transpiration and prolonged periods without sizable rainfall represent a hazard for terrestrial ecosystem’s health and agriculture. During the past four decades, the mean duration of prolonged dry episodes (1 month or longer in the eastern United States and 2 months or longer in the southwestern United States) has significantly increased. As a consequence the return period of 1-month-long dry episodes over the eastern United States has reduced more than twofold from 15 to 6–7 yr. The longer average duration of dry episodes has occurred during a relatively wet period across the country but is not observed over the northwestern United States.

scholarly journals Consequence of Spodoptera litura Fabricius (Lepidoptera: Noctuidae) Morphometrics Reared on Different Cotton Varieties

Our Nature ◽  
1970 ◽  
Vol 8 (1) ◽  
pp. 118-121
Author(s):  
D.A. Tithi ◽  
M.R. Amin ◽  
S.M.A. Hossain ◽  
H.M.S. Azad
Keyword(s):  
Significant Variation ◽  
Spodoptera Litura ◽  
Morphometric Parameters ◽  
Food Sources ◽  
Egg Mass ◽  
Morphometric Characteristics ◽  
Larval Instars ◽  
Cotton Variety ◽  
Lepidoptera Noctuidae

Morphometric characteristics of cotton armyworm Spodoptera litura were studied on cotton varieties CB9, CB10 and SR05. The morphometric parameters of the insect showed that the cotton variety SR05 revealed significantly the highest diameter of egg mass (7.4±0.4 mm). The cotton varieties showed significant effect on the length of different larval instars but the breadth of 3rd and 4th instar were statistically different. The studied cotton varieties as food sources did not affect pupal length and also the length and breadth of adults, but pupal breadth showed significant variation. The highest breadth (6.5±0.6 mm) of pupa was found when the insects were reared on SR05 variety.DOI: 10.3126/on.v8i1.4318

Avian Leucocytozoidae. I. Morphometric variation in three species of Leucocytozoon and some taxonomic implications

1975 ◽  
Vol 53 (6) ◽  
pp. 800-812 ◽  
Author(s):  
Gordon F. Bennett ◽  
A. Gillian Campbell
Keyword(s):  
Morphometric Parameters ◽  
Species Differentiation ◽  
Morphometric Characteristics ◽  
Morphometric Variation ◽  
Order Of Magnitude ◽  
Taxonomic Implications ◽  
Different Populations

The variability of nine morphometric parameters of Leucocytozoon simondi, L. dubreuili, and L. fringillinarum was studied with respect to variability (a) within a single bird; (b) within a single bird at different times; (c) between different birds of the same species: (d) between the same species of birds of different populations; and (e) between different species of birds. The results indicated that the variability of the parasites was of the same order of magnitude for all situations studied. Leucocytozoon dubreuili, L. fringillinarum, and the round phase of L. simondi could not be separated on the basis of measurements alone. It was concluded that the morphometric characteristics were not valid criteria for species differentiation. These studies result in the proposed synonymy of Leucocytozoon anseris with L. simondi, and of L. anellobiae, L. bouffardi, L. cambournaci, L. gentili, L. monardi, L. roubaudi, and L. seabrae with L. fringillinarum.

scholarly journals Manifestation and variability of biometric characteristics in line-parental components and hybrids of maize using different genetic peninsular

2021 ◽  
Vol 29 ◽  
pp. 29-34
Author(s):  
R. A. Vozhegova ◽  
Yu.O. Lavrynenko ◽  
T.Y. Marchenko ◽  
V.V. Bazalii
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Linear Growth ◽  
Morphometric Parameters ◽  
Early Group ◽  
Biometric Parameters ◽  
Irrigation Methods ◽  
Yield Level ◽  
General Scientific ◽  
Initial Forms

Aim. To establish the manifestation and variability of the trait "plant height" in the lines-parent components and hybrids of corn using different genetic plasmas, to determine the level of heterosis in newly created test crosses and to determine the influence of morphometric parameters on grain yield under irrigation. Methods. General scientific, special, comparative-analytical, regression, information-logical analysis and mathematical modeling. Results. The manifestation and variability of traits "plant height" and "height of cob attachment" in the lines - parent components and hybrids of corn with the use of different genetic plasmas were established. The level of heterosis in newly created test crosses under irrigation conditions was determined. The dependences of biometric parameters and their correlation with grain yield in the test of hybrids obtained with the participation of newly created initial forms of different embryonic plasmas were established. Conclusions. The ratio of plant height of hybrids by maturity groups and yield level showed that for the middle-early group, in the phase of cessation of linear growth, the optimal plant height is 235–265 cm, grain yield is 12.98–13.81 t/ha; for the middle-ripe group - 255–257 cm with grain yield at the level of 15.17–15.82 t/ha. For medium-late hybrids, the optimal plant height to ensure the highest grain yield (over 15 t/ha) is in the range from 270 to 280 cm. Keywords: parental lines, genetic plasmas, hybrids, maize.

scholarly journals Morphometric parameters of the head of the Bosnian broken-haired hound: Barak

2021 ◽  
Vol 26 (52) ◽  
pp. 175-178
Author(s):  
Jelena Nikitović ◽  
Milivoje Urošević ◽  
Darko Drobnjak
Keyword(s):  
Bosnia And Herzegovina ◽  
Morphometric Parameters ◽  
Morphometric Characteristics ◽  
Morphometric Measurements ◽  
Basic Parameters ◽  
Dog Breed

Parameters of the head are among the most important characteristics of each dog breed. The first morphometric examination of hounds on the territory of Bosnia and Herzegovina was performed by Laska in 1905. Since then, no one has ever conducted morphometric measurements on the Bosnian broken-haired hound - Barak. The breed itself is recognized by the FCI, and described under standard No 155, 1973. As for the head, the standard only describes the length, with no other parameters. The aim of this paper was to determine the basic parameters of the head of the Bosnian broken-haired hound - Barak by conducting zootechnical measurements. The study involved 120 dogs, including 64 males and 56 females, aged from 9 months to 10 years, from the entire territory of Bosnia and Herzegovina. The total of five parameters of the head was measured on each dog, and four indexes were calculated based on these measurements. This paper is the first analysis of the morphometric characteristics of the head of the Bosnian broken-haired hound Barak, and the results can be used for further detailed description of this breed.

Diving in ringed seal (Phoca hispida) pups during the nursing period

1993 ◽  
Vol 71 (5) ◽  
pp. 991-996 ◽  
Author(s):  
Christian Lydersen ◽  
Mike O. Hammill
Keyword(s):  
Short Duration ◽  
Average Duration ◽  
Dive Duration ◽  
Ringed Seal ◽  
Young Age ◽  
White Coat ◽  
Polar Bears ◽  
Phoca Hispida ◽  
Study Activity ◽  
The Mean

In this study, activity and diving performance of nursing ringed seal (Phoca hispida) pups were quantified using time–depth recorders. A total of 1040 h of activity, including 7506 diving cycles, was collected from three female pups. The pups spent 50.3% of their time in the water and 49.7% hauled out on the ice. When the pups were in the water, 20.5% of the time was spent actively diving, while 79.5% of the recorded wet time was spent at the surface. Most of the dives were shallow and of short duration. Mean dive duration was 59.1 ± 63.5 s (SD). Maximum dive durations for the three pups were 5.8, 7.5, and 12 min. Maximum recorded depths were 12, 35, and 89 m. These depths represented the bottom in the area where each pup was situated. The average duration of haul-out sessions where nursing could take place was 6.3 ± 1.6 h, and the time between these sessions was 8.2 ± 3.2 h. The mean number of breathing holes found per pup was 8.7 ± 3.5. The large proportion of time spent in the water, the development of diving skills at an extremely young age, the use of multiple breathing holes, and the prolonged white-coat stage are all interpreted to be evolutionary responses to strong predation pressure, mainly from polar bears.

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