Studies on winter survival strategies ofEryslphe pisiin Manitoba

1999 ◽  
Vol 21 (2) ◽  
pp. 159-164 ◽  
Author(s):  
K.R. Tiwari ◽  
T.D. Warkentin ◽  
G.A. Penner ◽  
J.G. Menzies
Keyword(s):  
Winter Survival ◽  
Survival Strategies

scholarly journals Muscles in Winter: The Epigenetics of Metabolic Arrest

Epigenomes ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 28
Author(s):  
W. Aline Ingelson-Filpula ◽  
Kenneth B. Storey
Keyword(s):  
Muscle Metabolism ◽  
Winter Survival ◽  
Survival Strategies ◽  
Cold Weather ◽  
Turtle Species ◽  
Limited Mobility ◽  
Freeze Tolerant ◽  
Metabolic Arrest ◽  
Total Body ◽  
Restricted Mobility

The winter months are challenging for many animal species, which often enter a state of dormancy or hypometabolism to “wait out” the cold weather, food scarcity, reduced daylight, and restricted mobility that can characterize the season. To survive, many species use metabolic rate depression (MRD) to suppress nonessential metabolic processes, conserving energy and limiting tissue atrophy particularly of skeletal and cardiac muscles. Mammalian hibernation is the best recognized example of winter MRD, but some turtle species spend the winter unable to breathe air and use MRD to survive with little or no oxygen (hypoxia/anoxia), and various frogs endure the freezing of about two-thirds of their total body water as extracellular ice. These winter survival strategies are highly effective, but create physiological and metabolic challenges that require specific biochemical adaptive strategies. Gene-related processes as well as epigenetic processes can lower the risk of atrophy during prolonged inactivity and limited nutrient stores, and DNA modifications, mRNA storage, and microRNA action are enacted to maintain and preserve muscle. This review article focuses on epigenetic controls on muscle metabolism that regulate MRD to avoid muscle atrophy and support winter survival in model species of hibernating mammals, anoxia-tolerant turtles and freeze-tolerant frogs. Such research may lead to human applications including muscle-wasting disorders such as sarcopenia, or other conditions of limited mobility.

The epidemiology of abomasal nematodes of sheep in Sweden, with particular reference to over-winter survival strategies

2004 ◽  
Vol 122 (3) ◽  
pp. 207-220 ◽  
Author(s):  
P.J Waller ◽  
L Rudby-Martin ◽  
B.L Ljungström ◽  
A Rydzik
Keyword(s):  
Winter Survival ◽  
Survival Strategies

Analytic Survival Strategies

1996 ◽  
Author(s):  
Maureen Murphy ◽  
Karen Rosica
Keyword(s):  
Survival Strategies

Sustainable Illegality: Gagauz Women in Istanbul

2014 ◽  
Vol 8 (1) ◽  
pp. 17-25 ◽  
Author(s):  
Bayram Unal
Keyword(s):  
Police Officers ◽  
Ethnic Origin ◽  
Social Processes ◽  
Survival Strategies ◽  
Preferential Treatment ◽  
National Group ◽  
Turkish Migrants ◽  
Illegal Migrants ◽  
Sociological Inquiry ◽  
The Social

This study deals with survival strategies of illegal migrants in Turkey. It aims to provide an explanation for the efforts to keep illegality sustainable for one specific ethnic/national group—that is, the Gagauz of Moldova, who are of Turkish ethnic origin. In order to explicate the advantages of Turkish ethnic origin, I will focus on their preferential treatment at state-law level and in terms of the implementation of the law by police officers. In a remarkable way, the juridical framework has introduced legal ways of dealing with the illegality of ethnically Turkish migrants. From the viewpoint of migration, the presence of strategic tools of illegality forces us to ask not so much law-related questions, but to turn to a sociological inquiry of how and why they overstay their visas. Therefore, this study concludes that it is the social processes behind their illegality, rather than its form, that is more important for our understanding of the migrants’ survival strategies in destination countries.

Winter Survival Evaluation of 172 Groundcovers in Northern Illinois

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 453d-453
Author(s):  
A.M. Shirazi ◽  
E.A. HedBorn ◽  
S.A. Mehaffey ◽  
A.S. Merritt
Keyword(s):  
Cold Resistance ◽  
Winter Hardiness ◽  
Winter Survival ◽  
Severe Damage ◽  
Hedera Helix ◽  
Cold Temperatures ◽  
Ajuga Reptans ◽  
Significant Damage ◽  
Cold Damage ◽  
Euonymus Fortunei

The winter hardiness of many groundcover cultivars in northern Illinois is not well-known. This study was designed to evaluate the survival of 172 plants used in the groundcover path at The Morton Arboretum. Once a month, from Sept.1997 to Jan. 1998, the plants chosen for this study were visually evaluated and their vitality rated on a scale of 1 to 5 (1 = alive, 5 = dead). All nine cultivars of Euonymus fortunei remained virtually unchanged throughout the study period. Among six cultivars of Hedera helix, only `Gold Heart' showed minor damage in November. Nine Heuchera were evaluated and all exhibited excellent resistance to cold temperatures. While all the Pulmonarias studied showed some cold damage by November, `Bielefeld Pink', `Little Blue', `Roy Davidson', Pulmonaria longifolia var. cevennensis, and Pulmonaria officinalis `Sissinghurst White' fared the best for the longest period of time. Five cultivars of Pachysandra terminalis were included in this study. None had significant damage until November, and then only rated a “2.” Of the eight Ajuga evaluated, Ajuga pyramidalis `Metallica Crispa', and Ajuga reptans `Braunherz', `Catlin's Giant', and `Gaiety', exhibited the best cold resistance. Four Polygonums varied widely in their response to cold temperatures, but all showed signs of severe damage in November. Polygonum `Border Jewel' exhibited the best tolerance, rating a “1” in October, but in November it was given a rating of “4.” Their recovery in spring will be compared.

Influence of Planting Stock Clove Size, Nitrogen Rate, and Planting Method on Elephant Garlic Production

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 517f-518
Author(s):  
Jeanine M. Davis
Keyword(s):  
Survival Rates ◽  
Ground Level ◽  
Winter Survival ◽  
Nitrogen Rate ◽  
Planting Stock ◽  
Mild Winter ◽  
Allium Ampeloprasum ◽  
Planting Methods ◽  
Planting Method ◽  
Nitrogen Rates

To produce large elephant garlic (Allium ampeloprasum L.) bulbs in the southeastern United States, stock cloves must be planted in the fall. During extremely cold winters, however, winter survival rates can be very low. A 2-year study was undertaken to examine practices to increase winter survival rates. Two clove sizes (≤20 g or >20 g), three nitrogen rates (112, 224, and 336 kg/ha), and three planting methods (flat, mulched, and hilled) were tested in a RCB design with four replications. For all planting methods, cloves were set in a shallow trench and covered with soil to ground level. This was also the flat treatment. For the mulched treatment, 7 cm of straw was spread on top. For the hilled treatment, soil was mounded 10 to 15 cm high over the ground level. Cloves were planted in early October and harvested in mid-June. Use of large planting stock cloves increased winter survival rates during the harsh winter, but had no effect during the mild winter. Both years, winter survival was reduced with the flat treatment. Yields of marketable bulbs were 4 to 5 times higher when >20 g cloves were planted than when ≤20 g cloves were used. Nitrogen rate and planting method had no effect on yields. The >20 g cloves also produced larger bulbs than the smaller cloves. Of the three planting methods, the flat treatment produced the smallest bulbs. Bulbs were much larger following the mild winter than the harsh winter.

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