The effect of ration size, temperature and body weight on specific dynamic action of the common cuttlefish Sepia officinalis

2008 ◽  
Vol 154 (6) ◽  
pp. 1085-1095 ◽  
Author(s):  
P. Grigoriou ◽  
C. A. Richardson
Keyword(s):  
Body Weight ◽  
Specific Dynamic Action ◽  
Sepia Officinalis ◽  
Dynamic Action ◽  
The Common ◽  
Ration Size

Apparent Specific Dynamic Action of Largemouth Bass, Micropterus salmoides

1974 ◽  
Vol 31 (11) ◽  
pp. 1763-1769 ◽  
Author(s):  
F. W. H. Beamish
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Food Intake ◽  
Largemouth Bass ◽  
Micropterus Salmoides ◽  
Specific Dynamic Action ◽  
Feeding Level ◽  
Dynamic Action ◽  
Time Required ◽  
Ration Size

Oxygen consumption attributable to apparent specific dynamic action (SDA) was measured in relation to feeding level and body weight in largemouth bass, Micropterus salmoides, forced to swim at 1.7 body lengths/s (BL/s). Apparent SDA rose curvilinearly with ration size, the coefficient increasing with weight of bass. For a ration of fixed percent body weight/day, apparent SDA increased curvilinearly with weight of bass, the rate being most pronounced at higher levels of food intake. Apparent SDA expressed in energy units as a percent of ration ingested did not differ significantly with weight of fish or meal size. The overall mean apparent SDA ± SD was 14.19 ± 4.19% of the energy ingested. Time required for oxygen consumption to subside to pre-feeding levels increased with ration size and weight of bass.Over the range of swimming speeds from 1.4 to 2.5 BL/s, there were no differences in apparent SDA of similar size bass fed a ration of 4% body weight/day. Similarly, time for elevated levels of oxygen consumption to return to prefeeding rates was independent of swimming speed.

Determinants and modeling of specific dynamic action for the Common Garter Snake (Thamnophis sirtalis)

2010 ◽  
Vol 88 (8) ◽  
pp. 808-820 ◽  
Author(s):  
Scott M. Bessler ◽  
Mary C. Stubblefield ◽  
G. R. Ultsch ◽  
Stephen M. Secor
Keyword(s):  
Oxygen Consumption ◽  
Body Temperature ◽  
Body Mass ◽  
Metabolic Response ◽  
Specific Dynamic Action ◽  
Meal Size ◽  
Garter Snake ◽  
Thamnophis Sirtalis ◽  
Dynamic Action ◽  
The Common

Specific dynamic action (SDA), the cumulative energy expended on digestion and assimilation, can contribute significantly to individual daily energy expenditure (DEE). The Common Garter Snake (Thamnophis sirtalis (L., 1758)) is a widely distributed generalist predator that could experience considerable variation in SDA and hence the contribution of SDA to DEE. We examined the effects of meal size, meal type, and body temperature on the postprandial metabolic response and SDA of the Eastern Garter Snake ( Thamnophis sirtalis sirtalis (L., 1758)) and generated predictive models of SDA based on meal size, body mass, and body temperature, and separately based on meal energy. Postprandial peak in oxygen consumption, duration of significantly elevated oxygen consumption, and SDA increased with increasing meal size (5%–45% of body mass). Postprandial metabolic response digesting six different equal-size prey items varied significantly; vertebrate prey generated larger SDA responses than soft-bodied invertebrates. Increases in experimental temperature (15–35 °C) yielded a matched increase in postprandial peak in oxygen consumption and decrease in digestive duration. For a 1-month hypothetical feeding history for an adult T. sirtalis, the cumulative predicted SDA varied by 4.5% among the three models (minimal, intermediate, and maximal intake of prey) and averaged 8%, 22%, and 38% of DEE, respectively.

Effect of temperature on specific dynamic action in the common octopus, Octopus vulgaris (Cephalopoda)

2004 ◽  
Vol 146 (4) ◽  
pp. 733-738 ◽  
Author(s):  
S. Katsanevakis ◽  
N. Protopapas ◽  
H. Miliou ◽  
G. Verriopoulos
Keyword(s):  
Specific Dynamic Action ◽  
Effect Of Temperature ◽  
Octopus Vulgaris ◽  
Dynamic Action ◽  
The Common ◽  
Common Octopus

Effects of Ration Size and Hypoxia on Specific Dynamic Action in the Cod

2007 ◽  
Vol 80 (2) ◽  
pp. 178-185 ◽  
Author(s):  
Anders D. Jordan ◽  
John F. Steffensen
Keyword(s):  
Specific Dynamic Action ◽  
Dynamic Action ◽  
Ration Size

Healthy PNPLA3 Risk Allele Carriers Present with Unexpected Body Fat Composition. A Study of One ousand Subjects

2014 ◽  
Vol 23 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Agnieszka Kempinska-Podhorodecka ◽  
Marcin Krawczyk ◽  
Marta Klak ◽  
Malgorzata Blatkiewicz ◽  
Frank Lammert ◽  
...  
Keyword(s):  
Body Weight ◽  
Liver Disease ◽  
Fatty Liver ◽  
Fatty Liver Disease ◽  
Alcoholic Fatty Liver ◽  
The Metabolic Syndrome ◽  
Anthropometric Characteristics ◽  
The Common ◽  
Total Fat ◽  
Alcoholic Fatty Liver Disease

Introduction: The common PNPLA3 (adiponutrin) variant p.I148M represents a major genetic driver of progression in non-alcoholic fatty liver disease (NAFLD). NAFLD is commonly associated with traits of the metabolic syndrome, therefore it is mostly suspected in obese individuals. Here, we investigate the association between the PNPLA3 variant and anthropometric traits in a cohort of healthy individuals.Patients and methods: We recruited 1,000 (500 females; age 18 - 66 years) healthy blood donors. The PNPLA3 variant was genotyped using TaqMan assays. All individuals were phenotyped with respect to anthropometric characteristics. We also determined the percentage of total fat (F%) and active tissue (TA%) of body weight.Results: Healthy carriers of the PNPLA3 [IM] and [MM] genotypes, although not differing in height from individuals with the genotype [II], displayed significantly lower body weight and lower BMI (both P = 0.005), higher TA% (P = 0.03) but lower F% (P = 0.03) and smaller waist, chest and shin circumferences (all P < 0.05). Separate analysis for males and females demonstrated an association between the [IM] and [MM] genotypes and higher TA% but lower F% (P = 0.04) in females. In males, BMI and total weight were significantly (P = 0.04) lower among carriers of the [M] allele.Discussion: Healthy individuals carrying the prosteatotic PNPLA3 allele p.I48M may be leaner as compared to the carriers of the common allele. Hence in clinical practice they might be overlooked since they do not necessarily present with the anthropometric characteristics commonly associated with severe hepatic steatosis.Abbreviations: ATX - autotaxin; BMI - body mass index; F% - total fat of body weight in %; Fkg - total fat of body weight in kilograms; GWAS - genome-wide association study; LPA - lysophosphatidic acid; NAFLD, non-alcoholic fatty liver disease; NASH - non-alcoholic steatohepatitis; PA - phosphatidic acid; PNPLA3-patatin-like phospholipase domain containing 3 (adiponutrin); TA% - active tissue of body weight in %; TAkg - active tissue of body weight in kilograms; WHR - waist-to-hip ratio.

Field Observations on the Common Striped Possum (Dactylopsila Trivirgata) in North Queensland.

1996 ◽  
Vol 23 (6) ◽  
pp. 755 ◽  
Author(s):  
KA Handasyde ◽  
RW Martin
Keyword(s):  
Body Weight ◽  
Home Range ◽  
Foraging Behaviour ◽  
Male Body ◽  
Radio Tracking ◽  
Minimum Convex Polygon ◽  
Far North ◽  
Large Trees ◽  
The Common ◽  
Primary Habitat

Habitat utilisation and foraging behaviour by the common striped possum (Dactylopsila trivirgata) was investigated by means of spotlighting and radio-tracking at Shiptons Flat, far north Queensland. Vine forest was the primary habitat of D. trivirgata; however, animals were also observed in open eucalypt (Eucalyptus tereticornis) woodland. Information collected on foraging behaviour suggests that D. trivirgata are generalist insectivores consuming some fruit and other foodstuffs, such as honey. Radio-tracking data were used to calculate the home-range areas of two subadult males. The home range of the smaller male (body weight 290 g) was 5.2 ha (by the 95% harmonic mean (HM) method) or 6.5 ha (by the minimum convex polygon (MCP) method), and that of the larger male (body weight 415 g) was 21.2 ha (95% HM) or 21.3 ha (MCP). Large trees with hollows, which are utilized for denning, appear to be an important feature of the habitat for this species. D. trivirgata exhibits a pronounced degree of sociality and may breed seasonally. Observations suggest that amethystine pythons (Morelia amethistina) may be major predators of D. trivirgata at Shiptons Flat.

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