Dynamics of Condition Parameters and Organ Measurements in Pheasants

1972 ◽  
Vol 30 (1-8) ◽  
pp. 455-498
Author(s):  
William L. Anderson
Keyword(s):  
Life Cycle ◽  
Environmental Factors ◽  
Physical Condition ◽  
Physiological Parameters ◽  
Phasianus Colchicus ◽  
Physiological Status ◽  
Physiological Mechanisms ◽  
Game Species ◽  
Game Bird ◽  
Animal Populations

Environmental factors are recognized as the primary forces dictating the distribution, abundance, and physical condition of pheasants (Phasianus colchicus) and all other game species. These forces, whether beneficial or detrimental, manifest themselves within the physiological mechanisms carrying on the life processes of individuals constituting animal populations. Thus, it might be said that the physiological status of an animal is the expression of all of the environmental factors acting on the animal. This study elucidates changes in selected physiological parameters of wild pheasants in Illinois in relation to stresses that occur during the life cycle of this game bird.

scholarly journals Flow cytometric measurements as a proxy for sporulation intensity in the cultured macroalga Ulva (Chlorophyta)

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Omri Nahor ◽  
Cristina F. Morales-Reyes ◽  
Gianmaria Califano ◽  
Thomas Wichard ◽  
Alexander Golberg ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Life Cycle ◽  
Abiotic Factors ◽  
Physiological Status ◽  
Seaweed Cultivation ◽  
Reproductive Growth ◽  
Biotic And Abiotic Factors ◽  
Flow Cytometric ◽  
Abiotic Stimuli ◽  
Fundamental Shift

Abstract Controlling the life cycle of the green macroalga Ulva (Chlorophyta) is essential to maintain its efficient aquaculture. A fundamental shift in cultivation occurs by transforming the thallus cells into gametangia and sporangia (sporulation), with the subsequent release of gametes and zoids. Sporulation occurrence depends on algal age and abiotic stimuli and is controlled by sporulation inhibitors. Thus, quantification of sporulation intensity is critical for identifying the biotic and abiotic factors that influence the transition to reproductive growth. Here, we propose to determine the sporulation index by measuring the number of released gametes using flow cytometry, in proportion to the total number of thallus cells present before the occurrence of the sporulation event. The flow cytometric measurements were validated by manually counting the number of released gametes. We observed a variation in the autofluorescence levels of the gametes which were released from the gametangia. High autofluorescence level correlated to phototactically active behaviour of the gametes. As autofluorescence levels varied between different groups of gametes related to their mobility, flow cytometry can also determine the physiological status of the gametes used as feedstock in seaweed cultivation.

scholarly journals Accumulation of Aluminium and Physiological Status of Tree Foliage in the Vicinity of a Large Aluminium Smelter

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
E. D. Wannaz ◽  
J. H. Rodriguez ◽  
T. Wolfsberger ◽  
H. A. Carreras ◽  
M. L. Pignata ◽  
...  
Keyword(s):  
Lipid Oxidation ◽  
Membrane Lipid ◽  
Physiological Parameters ◽  
Oxidation Products ◽  
Physiological Status ◽  
Pollution Gradient ◽  
Sulphur Deposition ◽  
Aluminium Production ◽  
Lipid Oxidation Products ◽  
Tree Foliage

A pollution gradient was observed in tree foliage sampled in the vicinity of a large aluminium production facility in Patagonia (Argentina). Leaves ofEucalyptus rostrata, and Populus hybridusand different needle ages ofPinusspec. were collected and concentrations of aluminium (Al) and sulphur (S) as well as physiological parameters (chlorophyll and lipid oxidation products) were analyzed. Al and S concentrations indicate a steep pollution gradient in the study showing a relationship with the physiological parameters in particular membrane lipid oxidation products. The present study confirms that aluminium smelting results in high Al and sulphur deposition in the study area, and therefore further studies should be carried out taking into account potentially adverse effects of these compounds on human and ecosystem health.

Implications of land class and environmental factors on life cycle GHG emissions of Miscanthus as a bioenergy feedstock

GCB Bioenergy ◽  
2013 ◽  
Vol 6 (4) ◽  
pp. 401-413 ◽  
Author(s):  
David Sanscartier ◽  
Bill Deen ◽  
Goretty Dias ◽  
Heather L. MacLean ◽  
Humaira Dadfar ◽  
...  
Keyword(s):  
Life Cycle ◽  
Environmental Factors ◽  
Ghg Emissions ◽  
Bioenergy Feedstock

Non-contact Abnormal Physiological Status Detection during Sport and Training

2021 ◽  
Vol 12 (4) ◽  
pp. 0-0
Keyword(s):  
Correlation Energy ◽  
Physiological Parameters ◽  
Physiological Parameter ◽  
Physiological Status ◽  
Monitoring Method ◽  
Energy Entropy ◽  
External Conditions ◽  
High Level ◽  
And Training ◽  
Parameter Monitoring

In sport and training, it is necessary to continue monitoring the physiological parameters of athletes to ensure that they can maintain a high level of competitive state. The previous monitoring physiological status methods mainly are contactable by sensors that are worn on body. This paper adopts a non-contact physiological parameter monitoring method by using imaging photoplethysmography (iPPG). In order to eliminate the noises in iPPG signals, the correlation energy entropy threshold adaptive denoising and variance characterization sereies are introduced to resist the noises from external conditions. The noises are remove by a threshold which is estimated by noise energy entropy. The constructed signals after denoising are used to estimate physiological parameters, such as heart rate and respiratory rate. The experimental results demonstrate that it estimates the physiological parameters better by usng iPPG based physiological parameter monitoring method than previous methods.

scholarly journals Effects of environmental factors on Tigriopus fulvus, Fischer 1860, a Mediterranean harpacticoid copepod

2018 ◽  
Vol 91 (1) ◽  
Author(s):  
Guido Bonello ◽  
Cristiano Angelini ◽  
Luigi Pane
Keyword(s):  
Climate Change ◽  
Life Cycle ◽  
Environmental Factors ◽  
Population Density ◽  
Harpacticoid Copepod ◽  
Environmental Parameters ◽  
Chemical Parameters ◽  
Climate Change Effects ◽  
Physical Chemical ◽  
Extinction Event

Tigriopus fulvus (Fischer, 1860) is a benthic harpacticoid copepod of the Mediterranean supralittoral zone. The transitional characteristics of this environment forced this species to develop high resistance to changes of environmental parameters. Nevertheless, Tigriopus fulvus life-cycle is influenced from the splashpools physical-chemical parameters. In this paper, we present the results of a supralittoral monitoring performed in 2014, confirming the influence of some of these environmental parameters on population buildups. Because of recent worldwide climate change effects, a threat might have been posed on this particularly exposed organism, whose population density decreased of a sixfold value in the last 30 years. During the three pools (A, B, C) monitoring, the maximum copepod density recorded was 1456 Ind/l (September 2014, Pool C), alongside first records of extinction event for Tigriopus fulvus.

scholarly journals Mucosal Barrier Functions of Fish under Changing Environmental Conditions

Fishes ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 2 ◽  
Author(s):  
Nikko Cabillon ◽  
Carlo Lazado
Keyword(s):  
Environmental Factors ◽  
Aquatic Environment ◽  
Current Knowledge ◽  
Direct Interaction ◽  
Short Review ◽  
Bioactive Molecules ◽  
Mucosal Barrier ◽  
Physiological Status ◽  
Physical Barrier ◽  
Mucosal Surfaces

The skin, gills, and gut are the most extensively studied mucosal organs in fish. These mucosal structures provide the intimate interface between the internal and external milieus and serve as the indispensable first line of defense. They have highly diverse physiological functions. Their role in defense can be highlighted in three shared similarities: their microanatomical structures that serve as the physical barrier and hold the immune cells and the effector molecules; the mucus layer, also a physical barrier, contains an array of potent bioactive molecules; and the resident microbiota. Mucosal surfaces are responsive and plastic to the different changes in the aquatic environment. The direct interaction of the mucosa with the environment offers some important information on both the physiological status of the host and the conditions of the aquatic environment. Increasing attention has been directed to these features in the last year, particularly on how to improve the overall health of the fish through manipulation of mucosal functions and on how the changes in the mucosa, in response to varying environmental factors, can be harnessed to improve husbandry. In this short review, we highlight the current knowledge on how mucosal surfaces respond to various environmental factors relevant to aquaculture and how they may be exploited in fostering sustainable fish farming practices, especially in controlled aquaculture environments.

IPM of Occasional Urban Invader Pest Species1

2003 ◽  
Vol 38 (2) ◽  
pp. 151-158 ◽  
Author(s):  
Arthur G. Appel
Keyword(s):  
Life Cycle ◽  
Environmental Factors ◽  
Habitat Modification ◽  
Temperature Extremes ◽  
Broadcast Application ◽  
Invader Species ◽  
Oxidus Gracilis

Occasional invader species include a variety of arthropods such as amphipods, centipedes, insects, millipedes, pill and sowbugs, scorpions, and spiders as well as nonarthropod mollusks and worms. These species present unique challenges for development of effective IPM programs. Most occasional invaders are susceptible to desiccation and temperature extremes or are in a wandering or migration phase of their life cycle. Environmental factors such as weather and the condition of homes and home landscapes affect occasional invader infestations. Successful IPM programs have been developed for the garden millipede, Oxidus gracilis Koch, and the smokybrown cockroach, Periplaneta fuliginosa (Serville). Both programs rely primarily on habitat modification based on pest biology. Results indicate that these occasional invaders can be managed without resorting to broadcast application of nonspecific insecticides.

Life Cycle and Environmental Factors in Selecting Residential and Job Locations

2005 ◽  
Vol 20 (3) ◽  
pp. 457-473 ◽  
Author(s):  
Tae-Kyung Kim ◽  
Mark W. Horner ◽  
Robert W. Marans
Keyword(s):  
Life Cycle ◽  
Environmental Factors
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