scholarly journals Effect of Tank Size on Zebrafish Behavior and Physiology

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2353
Author(s):  
Abudusaimaiti · Maierdiyali ◽  
Lin Wang ◽  
Yunchao Luo ◽  
Zhongqiu Li
Keyword(s):  
Sex Differences ◽  
Environmental Conditions ◽  
Life Science ◽  
Science Studies ◽  
Model Organism ◽  
Potential Effect ◽  
Living Environment ◽  
Experimental Animals ◽  
Living Space ◽  
Cortisol Levels

Environmental conditions strongly affect experimental animals. As a model organism, zebrafish has become important in life science studies. However, the potential effect of living environment on their behavior and physiology is often overlooked. This work aimed to determine whether tank size affects zebrafish behavior and physiology. Tests on shelter leaving, shelter seeking, shoaling, stamina, and pepsin and cortisol levels were conducted. Results showed that zebrafish behavior is easily affected by changes on the tank size. Fish that lived in small tanks behaved less boldly, had poor stamina, and spent much time on movement. Sex differences in behavior were only evident in the shelter seeking tests. Tank size had no effect on pepsin and cortisol, but cortisol concentrations in males were lower than those in females. This study suggests that zebrafish behavior is easily influenced by their living environment, and future related studies should consider their living space.

Starlet Sea Anemone (Nematostella vectensis) 2021 Environmental Summary, Reptile & Aquatics, Stowers Institute for Medical Research v1

2021 ◽  
Author(s):  
Shane C. Miller ◽  
Diana P Baumann ◽  
M. Shane Merryman
Keyword(s):  
North America ◽  
Medical Research ◽  
Environmental Conditions ◽  
Atlantic Coast ◽  
Model Organism ◽  
Environmental Parameters ◽  
Sea Anemone ◽  
Nematostella Vectensis ◽  
Research Results ◽  
Impact Research

The starlet sea anemone (Nematostella vectensis) is an emerging model organism, and we have maintained a colony at the Stowers Institute since 2007. Nematostella are known as a simple sea anemone, related to other cnidarians such as jellyfish and corals. Native to estuarine environments across the Atlantic coast of North America, from Novia Scotia to Florida, they encounter a variety of environmental conditions (e.g., temperature, salinity). Acknowledging that husbandry conditions and environmental parameters can impact research results we provide information about the housing, nutrition, maintenance, and health for our colony of Nematostella. This information will be applicable to any Nematostella housed in the facility in 2021.

scholarly journals The sources of sex differences in aging in annual fishes

2020 ◽  
Author(s):  
Martin Reichard ◽  
Radim Blažek ◽  
Jakub Žák ◽  
Petr Kačer ◽  
Oldřich Tomášek ◽  
...  
Keyword(s):  
Sex Differences ◽  
Social Environment ◽  
Social Factors ◽  
Environmental Conditions ◽  
Natural Populations ◽  
Experimental Results ◽  
Survival Difference ◽  
Captive Populations ◽  
Baseline Mortality ◽  
In The Wild

AbstractSex differences in lifespan and aging are widespread among animals, with males usually the shorter-lived sex. Despite extensive research interest, it is unclear how lifespan differences between the sexes are modulated by genetic, environmental and social factors. We combined comparative data from natural populations of annual killifishes with experimental results on replicated captive populations, showing that females consistently outlived males in the wild. This sex-specific survival difference persisted in social environment only in two most aggressive species, and ceased completely when social and physical contacts were prevented. Demographically, neither an earlier start nor faster rate of aging accounted for shorter male lifespans, but increased baseline mortality and the lack of mortality deceleration in the oldest age shortened male lifespan. The sexes did not differ in any measure of functional aging we recorded. Overall, we demonstrate that sex differences in lifespan and aging may be ameliorated by modulating social and environmental conditions.

scholarly journals Recent developments of ion sources for life-science studies at the Heavy Ion Medical Accelerator in Chiba (invited)

2016 ◽  
Vol 87 (2) ◽  
pp. 02C107 ◽  
Author(s):  
A. Kitagawa ◽  
A. G. Drentje ◽  
T. Fujita ◽  
M. Muramatsu ◽  
K. Fukushima ◽  
...  
Keyword(s):  
Life Science ◽  
Science Studies ◽  
Heavy Ion ◽  
Ion Sources ◽  
Recent Developments

scholarly journals Sex Differences in the Genetic Basis of Morning Serum Cortisol Levels: Genome-Wide Screen Identifies Two Novel Loci Specific to Women

2005 ◽  
Vol 90 (8) ◽  
pp. 4747-4752 ◽  
Author(s):  
Lianne M. Kurina ◽  
Lauren A. Weiss ◽  
Steven W. Graves ◽  
Rodney Parry ◽  
Gordon H. Williams ◽  
...  
Keyword(s):  
Sex Differences ◽  
Genetic Basis ◽  
Serum Cortisol ◽  
Genome Wide ◽  
Morning Serum Cortisol ◽  
Cortisol Levels

The marine benthos of Arctic and sub-Arctic continental shelves

Polar Record ◽  
1975 ◽  
Vol 17 (111) ◽  
pp. 595-626 ◽  
Author(s):  
Mark A. Curtis
Keyword(s):  
Life Science ◽  
Science Studies ◽  
The Arctic ◽  
Biological Research ◽  
Bottom Fauna ◽  
Polar Regions ◽  
Biological Processes ◽  
Arctic Seas ◽  
Marine Life ◽  
Continental Shelves

The study of marine life from the bottom of Arctic and sub-Arctic seas has long been a topic of scientific interest, and such work represents an important part of contemporary biological research in the polar regions. Contributions to this field have been made through the collective efforts of investigators from many nations over the years and include findings of considerable significance for life science studies as a whole, as well as for specific polar problems. Together with contemporary research on the pelagic and planktonic biota of northern waters, current work on the bottom fauna (benthos) offers much potential for developing our fundamental knowledge of biological processes in the Arctic seas.

scholarly journals Virtual-Digital Self of Public Human

2021 ◽  
pp. 89-99
Author(s):  
L. A Vasylieva
Keyword(s):  
Research Direction ◽  
Modern Human ◽  
Living Environment ◽  
The Self ◽  
Public Communication ◽  
The Public ◽  
Digital Space ◽  
Living Space ◽  
Anthropological Research ◽  
Relationship Of

The purpose of the article is distinguishing between "internal" and "external" public human through comprehending the phenomenon of Self in its virtual-digital essence as a popular demonstrative-project space "BETWEEN" aggression and harmony. Theoretical basis of the work is based on the study of the phenomenon of modern human aggression in the virtual-digital space and the "project space" of the living environment through understanding the nature of the human "I". The penetration limits of the Self of the public human into the "project space" are comprehended and the nature of the self-realization and self-search models of human through the "transcendent ego" is revealed. Originality is demonstrated through comprehending the Self phenomenon of the public human, which forms new anthropological research direction and represents a conceptual paradigm of relationship of "human I – publicity – human We – the living space of the Other". Conclusions. The Self of the public human as the space "BETWEEN" does not completely "dissolve" in a separate ontological basis, but is the basis for the formation of his/her "I", while only participation in the existence of others reveals the meaning of his/her own existence. Such interaction requires significant human efforts – skills and competencies of public communication, which are able to create a successful self-identification of a public human without aggression and conflict.

scholarly journals ON PROPOSALS FOR ALTERATIONS AND ADDITIONS TO SANITARY-EPIDEMIOLOGICAL REQUIREMENTS TO LIVING CONDITIONS IN RESIDENTIAL BUILDINGS AND PREMISES

2019 ◽  
Vol 98 (7) ◽  
pp. 707-712 ◽  
Author(s):  
S. A. Gorbanev ◽  
N. A. Mozzhukhina ◽  
Gennady B. Yeremin ◽  
S. N. Noskov ◽  
A. O. Karelin ◽  
...  
Keyword(s):  
Public Relations ◽  
Residential Buildings ◽  
Residential Building ◽  
Well Being ◽  
Living Conditions ◽  
Living Environment ◽  
Outdoor Environment ◽  
Air Exchange Rate ◽  
Living Space ◽  
Free Environment

Residential buildings and premises must comply with sanitary rules and regulations, but a lot of provisions of sanitary and epidemiological requirements for living conditions contradict Federal legislation and do not provide for the regulation of public relations arising in the process of ensuring sanitary and epidemiological well-being of population at all stages of arranging residential buildings and premises, therefore they require updating. International, national regulatory legal acts of a number of countries, regulatory legal acts of Russian Federation, establishing sanitary and epidemiological requirements for living conditions in residential buildings and premises, research studies carried out in Russia and abroad were used as research materials. A set of general scientific research methods: analytical, system-structural, comparative was a procedural basis of the study. Widening of the scope of sanitary standards and rules: extension of responsibility for compliance with the requirements of the document to the executive authorities, expanding the list of objects prohibited for allocation in residential buildings, measures to ensure a barrier-free environment for the disabled, requirements of inadmissibility of residential building destruction by mold, and others were suggested as the results of the study. Due to the fact that the problem of fresh air is common, the design indices of air and air exchange rate are proposed. Recommended changes regarding noise regulation assume the elimination of contradictions when correction coefficients are applied. Conclusions. Analysis of current sanitary and epidemiological requirements enabled to specify indoor environmental factors of the living space, originating from an interaction of outdoor environment, indoor environment of the living space and direct effect of the human himself and on which favorable living conditions depend, and elaborate on the reasons of violations of the established requirements. Suggested changes and additions corresponded to the main trends existing in international practice are aimed at specifying the provisions of the document, optimizing a number of standards, and eliminating contradictions. It is noted that regulation and monitoring of dwelling condition cannot be limited just by the indoor premises of the building. It is necessary to consider the living environment as a united system: human - residential unit (apartment, room, and auxiliary facilities) - building - surrounding grounds- microdistrict - residential area of the city.

scholarly journals INFLUENCES OF HOUSING SETTINGS AND DESIGNS IN FULFILLING THE MALAY RESIDENTS’ SOCIAL CULTURES

2016 ◽  
Vol 14 (4) ◽  
Author(s):  
Noor Aimran Samsudin ◽  
Syed Zainol Abidin Idid
Keyword(s):  
Urban Areas ◽  
Family Relationship ◽  
Urban Housing ◽  
Living Environment ◽  
Housing Design ◽  
Living Space ◽  
Design Attributes ◽  
The Social ◽  
The Family ◽  
Housing Estates

This study discusses on the influence of settlement settings and an ideal housing design that can shape a good society and excel in behaviour, the value of life and lifestyle daily. Living environment affects its inhabitants, including the opportunity for the Malay community to practice their norm and values based on Islamic teachings. There are two housing categories in Malaysia, namely as an unplanned settlement (kampongs) and planned settlement (urban housing). Nowadays, majority of the Urban-Malay community are living in modern housing estates in urban areas where the living sphere is different from a traditional settlement such as kampong in rural area. The living environment setting such as the kampongs encourage Malay residents to practice their social cultures. The Malay socio-cultural aspect is established slowly and evolves through time based on values required by religion and inherited from one generation to another. Malays have to comply with all the teachings and practice the values required by Islam. This paper suggests that, to meet such Malay residents’ need, a certain physical design attributes from the kampongs should be applied in the modern housing environment at two different levels, called as the micro (house unit) and macro (settlement or neighbourhood) level. Based on the various literature sources, the requirement of optimum living space, the social activities, the family relationship, the neighbourhood concepts and preservation of the privacy element within Malay settlement have been discussed. As a comparison, the existing of linked housing setting has been reviewed in order to compare between the modern and traditional living environments. This paper proposed that the Muslim-Malay resident social cultures are a basis of Malay lifestyle and should be taken into account during the design of a settlement as a whole living environment setting.

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