Variation of Barbs of the Barbus intermedius Complex in Three Ethiopian Lakes: Differentiation of Generalised Individuals in Characters Related to Food Resources Partitioning. Method of Correlation Pleiades

2021 ◽  
Vol 52 (3) ◽  
pp. 238-246
Author(s):  
A. N. Mironovsky
2017 ◽  
Vol 7 (2) ◽  
pp. 91-105
Author(s):  
T.G. Vasilenko

The relevance of the study of the personal characteristics of law enforcement officers due to a significant number of crimes of an aggressive nature, committed by employees of internal Affairs bodies, and the need to develop preventive measures. The purpose of this research is to study peculiarities of the manifestation of progressive and inhibiting aggression personality factors in the structure of law enforcement officers, whose activities directly associated with aggression in the performance of official duties. The study involved 149 employees of special forces of law enforcement are male aged 18 to 35 years. Used a wide battery of psychodiagnostic methods aimed at a comprehensive study of the individual respondents. the data Obtained were analyzed using the method of correlation pleiades. According to the results, was discovered a unique picture of the relationship among personality structures and interaction progressive and deterrent aggression factors with the prevalence of progressive on inhibitory factors in the studied structure.


2019 ◽  
Vol 9 (1) ◽  
pp. 176-182
Author(s):  
A. Pokhylenko ◽  
O. A. Lykholat ◽  
O. O. Didur ◽  
Yu. L. Kulbachko ◽  
T. Yu. Lykholat

Diplopoda play an important role in the processes of creating and maintaining soil fertility by implementing leaf litter destruction at its initial stages. Recently, in Ukraine the problem of soil fertility restoration has acquired a great urgency due to climate changes (aridity and temperature rising) and constantly increasing anthropogenic impact on natural biotopes, which often have Diplopoda as its element. The aim of this study was to evaluate the integrity of linear morphological characteristics of experimental animal Rossiulus kessleri (Lohmander, 1927) in different forest biotopes within semi-arid climate of the steppe zone. To determine the interrelation of morphological features, the method of correlation pleiades was used. It is established that 14 studied morphological characteristics of R. kessleri form the most powerful correlation pleiades with relative intensity values 0.64 and 0.93, within natural subwatereshed-ravine landscape and terrace flood plain forest conditions respectively. However, weakened one with 0.07 relative intensity value is observed within standing forest. Generally, the integrity of morphological characteristics of millipedes is increasingly prominent in the natural forest biotopes and extremely low in forest stands. Morphological variability of diplopods identified sylvatization degree of julidae's habitat. Relative potency value of correlation pleiades can be used for diagnostics of forest stands naturalization within the steppe zone of Ukraine.


2007 ◽  
Author(s):  
Sean D. Farley ◽  
Herman Griese ◽  
Rick Sinnott ◽  
Jessica Coltrane ◽  
Chris Garner ◽  
...  

2021 ◽  
Author(s):  
Robbie I’Anson Price ◽  
Francisca Segers ◽  
Amelia Berger ◽  
Fabio S Nascimento ◽  
Christoph Grüter

Abstract Social information is widely used in the animal kingdom and can be highly adaptive. In social insects, foragers can use social information to find food, avoid danger or choose a new nest site. Copying others allows individuals to obtain information without having to sample the environment. When foragers communicate information they will often only advertise high quality food sources, thereby filtering out less adaptive information. Stingless bees, a large pantropical group of highly eusocial bees, face intense inter- and intra-specific competition for limited resources, yet display disparate foraging strategies. Within the same environment there are species that communicate the location of food resources to nest-mates and species that do not. Our current understanding of why some species communicate foraging sites while others do not is limited. Studying freely foraging colonies of several co-existing stingless bee species in Brazil, we investigated if recruitment to specific food locations is linked to (1) the sugar content of forage, (2) the duration of foraging trips and (3) the variation in activity of a colony from one day to another and the variation in activity in a species over a day. We found that, contrary to our expectations, species with recruitment communication did not return with higher quality forage than species that do not recruit nestmates. Furthermore, foragers from recruiting species did not have shorter foraging trip durations than those from weakly-recruiting species. Given the intense inter- and intraspecific competition for resources in these environments, it may be that recruiting species favour food resources that can be monopolised by the colony rather than food sources that offer high-quality rewards.


Author(s):  
J. D. Brewer ◽  
M. P. Santos ◽  
M. A. Lopez ◽  
V. A. Paz-Soldan ◽  
M. P. Chaparro

AbstractThe goal of this study was to measure food insecurity among families with children in a low-income district of Lima, Peru and to identify the formal and informal food resources available to them that may affect their food security status. In June-July 2019, we collected data from 329 randomly selected households in Villa El Salvador (Lima, Peru). Following a mixed methods approach, we found that the percentage of households using food assistance programs (FAPs) increased with increasing levels of food insecurity, but two FAPs were heavily used by households regardless of food (in)security. The main reasons for using FAPs included financial need, already being signed up in the program, and believing that the food was of nutritional value; the main reasons for non-use were finding the program unnecessary, dislike or poor perceived quality of the food, and not being able to sign up for the program. Similarly, informal food resources, such as buying food on credit or receiving food from someone outside the household, were incrementally used with increased levels of food insecurity. Our study clarifies the relationship between level of household food insecurity and FAP use – FAPs more commonly used by food insecure households were used because of financial need, whereas the FAPs most commonly used by food secure households were those with automatic enrollment. At a programmatic level, our research highlights the need for making nutritious and preferred foods available in FAPs and standardizing the application of enrollment criteria.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abbey E. Wilson ◽  
Dan Wismer ◽  
Gordon Stenhouse ◽  
Nicholas C. Coops ◽  
David M. Janz

AbstractEnvironmental change has been shown to influence mammalian distribution, habitat use, and behavior; however, few studies have investigated the impact on physiological function. This study aimed to determine the influence of landscape condition on the expression of target proteins related to energetics, reproduction, and stress in grizzly bears. We hypothesized that changes in landscape condition explains protein expression. Skin biopsies were collected from free-ranging grizzly bears in Alberta, Canada from 2013–2019 (n = 86 individuals). We used an information theoretic approach to develop 11 a priori candidate generalized linear mixed models to explain protein expression. We compared models using Akaike Information Criteria (AICc) weights and averaged models with ΔAICc < 2 for each protein. Food resources, represented by increased distance to coal mines and decreased crown closure, positively influenced energetic proteins (adiponectin and alpha-1-acid glycoprotein). Proteins related to reproduction (ceruloplasmin and serpin B5) were positively associated with increased wetland and upland food resources in addition to movement, but negatively associated with increased distance to roads. One stress related protein, complement C3, was positively influenced by increased percent conifer. Given the need to detect emerging threats to wildlife, we suggest the assessment of physiological function will lead to improved monitoring of species in rapidly changing landscapes.


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