Rate of gonad development in the ascidian Pyura praeputialis (Heller)

1972 ◽  
Vol 23 (1) ◽  
pp. 49 ◽  
Author(s):  
CK Goddard
Keyword(s):  
Body Weight ◽  
Gonad Development ◽  
Total Body Weight ◽  
Gonad Weight ◽  
Visceral Mass ◽  
Gonad Size ◽  
Intertidal Population ◽  
Total Body ◽  
Favourable Environment ◽  
Two Populations

Morphometric studies have been carried out on Pyura praeputialis. The relationships investigated were: (a) weight of the visceral mass v, total body weight, (b) total gonad weight v. weight of the visceral mass, (c) weight of right gonad v. total gonad weight, and (d) weight of right gonad v. weight of visceral mass. There is evidence that spawning results in a significant decrease in gonad size and that there are two spawning seasons per year (spring and autumn), but evidence on the latter point is not conclusive. It is shown that, within each of the populations studied, gonad weight bears a rectilinear relationship to body weight. It is also shown that the rate of gonad development is significantly lower in the littoral (i.e. intertidal) population than in the sublittoral (i.e. permanently immersed) population. The different rates of gonad development in the two populations are taken to indicate that the littoral is a less favourable environment, for this species, than the sublittoral. The implications of this finding are discussed.

Reproduction of the Slate Pencil Sea Urchin, Heterocentrotus mammillatus (L), in the Northern Red Sea

1990 ◽  
Vol 41 (4) ◽  
pp. 457 ◽  
Author(s):  
A Dotan
Keyword(s):  
Body Weight ◽  
Linear Relationship ◽  
Sea Urchin ◽  
Red Sea ◽  
Total Body Weight ◽  
Annual Reproductive Cycle ◽  
Gonad Weight ◽  
Gonad Size ◽  
Total Body ◽  
Northern Red Sea

The annual reproductive cycle of Heterocentrotus mammillatus was studied in the northern Red Sea. Gametogenesis starts in January, and the abundance of ripe gametes gradually increases until, by May, they occupy most of the gonadal volume. Spawning occurs in June and July; the pattern suggested a lunar or semilunar cycle. Assays of KC1 injections suggest that these may be a better indicator of reproductive ripeness than conventional oocytes-ova analysis. A highly significant linear relationship between gonad weight and total body weight was observed at the period of maximal gonad size prior to spawning.

scholarly journals Fecundity and gonado somatic index of Gangetic mud eel, Monopterus cuchia (Hamilton, 1822)

2015 ◽  
Vol 41 (2) ◽  
pp. 165-172
Author(s):  
Binay K Chakraborty ◽  
SA Azad ◽  
B Barman ◽  
AMO Faruque
Keyword(s):  
Body Weight ◽  
Linear Relationship ◽  
Body Length ◽  
Total Body Weight ◽  
Second Order ◽  
Regression Equation ◽  
Total Weight ◽  
Gonad Weight ◽  
Total Body ◽  
Somatic Index

The gonado-somatic index (GSI) and fecundity of Gangetic mud eels Monopterus cuchia (Hamilton, 1822) were investigated during January to December, 2010 at Sherpur, Bangladesh. Highest GSI value was found in the month of June and the values began to fall gradually from July to December in both sexes. The fecundity ranged from 458.0±31.22 to 1116.0±11.31 in 62 samples having a total length of 54.25±1.71 to 66.05±0.71 cm, body weight from 256.33±45.14 to 492.50±2.50 g and gonad weight from 21.32±4.48 to 55.90±0.98 g. The relationships between body length and fecundity was found to be polynomial of second order of body weight and was expressed as: Y=0.2683 X2- 1.9383 X+370.72. The regression equation established for fecundity on total body weight was Y=454.37 X-692.8. The regression equation established for fecundity on total gonad weight was Y=19.602 X-27.546. The above equation showed that the relationships between fecundity and total weight was curvilinear. A highly significant (P<0.01) linear relationship was found to exist between fecundity and gonadal weight.Bangladesh J. Zool. 41(2): 165-172, 2013

La fraye d'une population d'éperlans géants, Osmerus eperlanus mordax, au lac Heney, Comté de Gatineau, Québec

1968 ◽  
Vol 25 (9) ◽  
pp. 1813-1830 ◽  
Author(s):  
Roméo-O. Legault ◽  
Claude Delisle
Keyword(s):  
Body Weight ◽  
Total Body Weight ◽  
The Body ◽  
Testis Weight ◽  
Spawning Period ◽  
Weight One ◽  
Total Body ◽  
Set Up ◽  
The Right ◽  
Two Populations

Two sympatric smelt populations inhabit Lake Heney, Gatineau County, Quebec. This study deals only with the population which we call "giant" but a brief discussion on "small smelt — large smelt" theory is included. The data were obtained from 1556 specimens collected with eight gillnets set up under the ice at one locality on Lake Heney, in February, March, and April 1967. The data permitted the determination of the time and site of spawning in the giant population. The time and site of spawning in the "dwarf" population was already known, and we found a marked difference in the spawning behavior and time of spawning of the two populations. The two populations are furthermore reproductively isolated. The sex ratio during the spawning period was closely followed and found to be similar to that of all other freshwater or marine smelts. A DeGiusti dredge, dragged along the bottom below the position of the gillnets immediately after the melting of the ice, permitted the collection of embryonic smelt eggs from a depth of 30–40 ft.The maturity index, relative fecundity, and intergonadal ratio were especially studied. Ovary weight at maturity represents in average one-quarter the total body weight, and testis weight one-fortieth the body weight. A 213-mm female lays an average of 42,460 eggs. The right ovary is 4.5 times smaller than the left one, and the right testis is on the average 3.8 times smaller than the left one.There is a direct relationship between total fecundity and length of mature females. This relation is expressed by the curve log E = 4.54 log L + k.

scholarly journals Lean body weight versus total body weight to calculate the iodinated contrast media volume in abdominal CT: a randomised controlled trial

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Moreno Zanardo ◽  
Fabio Martino Doniselli ◽  
Anastassia Esseridou ◽  
Massimiliano Agrò ◽  
Nicol Antonina Rita Panarisi ◽  
...  
Keyword(s):  
Body Weight ◽  
Contrast Media ◽  
Controlled Trial ◽  
Total Body Weight ◽  
Lean Body Weight ◽  
Iodinated Contrast Media ◽  
Abdominal Ct ◽  
Iodinated Contrast ◽  
Significant Difference ◽  
Total Body

Abstract Objectives Iodinated contrast media (ICM) could be more appropriately dosed on patient lean body weight (LBW) than on total body weight (TBW). Methods After Ethics Committee approval, trial registration NCT03384979, patients aged ≥ 18 years scheduled for multiphasic abdominal CT were randomised for ICM dose to LBW group (0.63 gI/kg of LBW) or TBW group (0.44 gI/kg of TBW). Abdominal 64-row CT was performed using 120 kVp, 100–200 mAs, rotation time 0.5 s, pitch 1, Iopamidol (370 mgI/mL), and flow rate 3 mL/s. Levene, Mann–Whitney U, and χ2 tests were used. The primary endpoint was liver contrast enhancement (LCE). Results Of 335 enrolled patients, 17 were screening failures; 44 dropped out after randomisation; 274 patients were analysed (133 LBW group, 141 TBW group). The median age of LBW group (66 years) was slightly lower than that of TBW group (70 years). Although the median ICM-injected volume was comparable between groups, its variability was larger in the former (interquartile range 27 mL versus 21 mL, p = 0.01). The same was for unenhanced liver density (IQR 10 versus 7 HU) (p = 0.02). Median LCE was 40 (35–46) HU in the LBW group and 40 (35–44) HU in the TBW group, without significant difference for median (p = 0.41) and variability (p = 0.23). Suboptimal LCE (< 40 HU) was found in 64/133 (48%) patients in the LBW group and 69/141 (49%) in the TBW group, but no examination needed repeating. Conclusions The calculation of the ICM volume to be administered for abdominal CT based on the LBW does not imply a more consistent LCE.

Increases in adipose and total body weight, but not in lean body mass, associated with subcutaneous administration of Sonic hedgehog-Ig fusion protein to mice

2002 ◽  
Vol 57 (3) ◽  
pp. 107-114 ◽  
Author(s):  
Pauline L. Martin ◽  
Joan Lane ◽  
Louise Pouliot ◽  
Malcolm Gains ◽  
Rudolph Stejskal ◽  
...  
Keyword(s):  
Body Weight ◽  
Fusion Protein ◽  
Lean Body Mass ◽  
Body Mass ◽  
Sonic Hedgehog ◽  
Subcutaneous Administration ◽  
Total Body Weight ◽  
Total Body

Effects of the teratogenic folic acid antagonist, 9-methyl pteroylglutamic acid, on hydroxyproline levels in fetal rat limbs

Development ◽  
1977 ◽  
Vol 41 (1) ◽  
pp. 289-294
Author(s):  
R. R. Schmidt ◽  
K. P. Chepenik ◽  
B. V. Paynton
Keyword(s):  
Body Weight ◽  
Folic Acid ◽  
Total Body Weight ◽  
Pregnant Rats ◽  
Skeletal Malformations ◽  
Fetal Rat ◽  
Pteroylglutamic Acid ◽  
Limb Malformations ◽  
Total Body ◽  
Rate Of Accumulation

Pregnant rats were subjected to either a folic-acid-deficient regimen that produces multiple congenital skeletal malformations, or a control folic-acid-supplemented regimen. Fetal limbs were extirpated on days 16 and 18 of gestation, pooled from each litter, homogenized, and aliquots set aside for hydroxyproline, protein and DNA determinations. We found that (1) the amount of protein recovered per treated limb was approximately half that of controls on both days, (2) the amount of protein recovered per treated or controlday-18 limb was twice that of a day-16 limb, (3) treated limbs constituted the same percentage of total body weight as in controls on day 16, but a smaller percentage than in controls on day 18, and (4) the concentration of hydroxyproline (μg/mg protein) was significantly less for treated limbs than for controls on day 18 of gestation. We noted also that: (1) lowest hydroxyproline concentrations were found in limbs from treated fetuses with gross limb malformations, (2) intermediate concentrations were found in limbs of treated fetuses not exhibiting gross limb malformations, and (3) highest concentrations were found in control limbs. We suggest that the treatment resulted in (1) a decreased rate of accumulation of protein in limbs prior to day 16, but not from day 16 to day 18, (2) a decreased rate of accumulation of some non-protein component(s) in treated limbs from day 16 to day 18, and (3) an altered collagen metabolism.

scholarly journals Growth and body weight of free-range reindeer in western Alaska

Rangifer ◽  
2000 ◽  
Vol 20 (2-3) ◽  
pp. 221 ◽  
Author(s):  
Greg L. Finstad ◽  
Alexander K. Prichard
Keyword(s):  
Body Weight ◽  
Growth Rates ◽  
Total Body Weight ◽  
Growth Patterns ◽  
Spatial And Temporal Variation ◽  
Adult Males ◽  
Body Weights ◽  
Total Body ◽  
Reproductive Females ◽  
Average Body

Total body weight of 9749 reindeer calves and 4798 adult reindeer were measured from 1984 to 1999 on the Seward Peninsula, western Alaska, USA. Growth rates of male and female calves, and annual growth patterns of adults were determined. Male calves grew faster than female calves. Reproductive females were lighter than non-reproductive females during summer but there was no effect of reproduction on average body weights the following winter. Adult males age 3-5 were heavier during summer than winter. Castrated males weighed the same as uncastrated males in summer, but were significantly heavier in winter, and did not display the large annual fluctuations in weight typical of reproductive males and females. Growth rates were higher and body weights greater in this herd than many other cir-cumpolar reindeer populations. We suggest these kinds of physiological indices should be used to monitor the possible effects of spatial and temporal variation in population density and to evaluate changes in herding practices.

scholarly journals SUN-543 Real World Evidence of Successful Weight Management for the Obese Population: Complete Reversal of Obesity Related Metabolic Co-Morbidities and Weight Loss in Patients Attending a Multidisciplinary Weight Management Clinic in Australia

2020 ◽  
Vol 4 (Supplement_1) ◽  
Author(s):  
Zoe Rock ◽  
Juliana Chen ◽  
Joanna Jaques ◽  
Bernard L Champion ◽  
Reginald V Lord ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Weight Management ◽  
Exercise Physiology ◽  
Body Weight Loss ◽  
Total Body Weight ◽  
Management Interventions ◽  
Co Morbidity ◽  
Total Body ◽  
Total Body Weight Loss

Abstract Over 2.5 billion people worldwide are overweight or obese. Multidisciplinary weight management interventions have evolved to address the complexity of weight loss for those with one or more chronic diseases, and the trend of weight regain. The aim of these interventions is to encourage sustainable lifestyle changes, resulting in weight loss and weight maintenance and improvements in comorbidities. While some prospective clinical trials have demonstrated efficacy, results are often not reported by real life practices. The aim of this study was to evaluate the effectiveness of a Sydney based multidisciplinary weight management clinic with endocrinology, dietetics, exercise physiology, psychology, and bariatric surgical domains. All patients who attended the clinic for weight loss purposes between March 2017 and April 2019 were included (n=220). A retrospective chart review was conducted. Patient data on weight, BMI, waist circumference, body composition measurements, and selected blood test results and co-morbidities were analysed. All patient therapy included endocrinological input for co-morbidity identification and management, lifestyle intervention (dietetic and exercise physiology input) with optional adjunct pharmacotherapy or psychological counselling. Of the 220 cohort, 20 of the patients had sleeve gastrectomy. Patient retention in the clinic after the first consultation was 85% (n=186), a high rate within the weight management community. 59% of patients achieved a minimum of 5% total body weight loss, including 18% who achieved greater than 10% total body weight loss. Additionally, 31% of patients lost enough weight to decrease their BMI class by up to 2 or more classes. Of the gastric sleeve cohort average excess body weight loss was 32kg (21-56kg) enhanced by multidisciplinary care in the lead up to surgery. Across the cohort some patients completely reversed co-morbidities; including dyslipidaemia (n=1), hypertension (n=3), NAFLD (n=1), pre-diabetes (n=8) and type 2 diabetes (n=3), OSA (n=1). These results demonstrate that obesity is a chronic condition that can be successfully managed. We have demonstrated significant durable weight loss and improvement in metabolic co-morbidities with holistic coordinated care. Future directions include translating this model of care into standard practice in Australia and other countries where obesity to date not received the same coordinated approach as other chronic conditions.

Water Relationships of Aphis Fabae Scop. During Tethered Flight

1961 ◽  
Vol 38 (1) ◽  
pp. 175-180
Author(s):  
A. J. COCKBAIN
Keyword(s):  
Body Weight ◽  
Relative Humidity ◽  
Water Loss ◽  
Total Body Weight ◽  
Aphis Fabae ◽  
Limiting Factor ◽  
Saturation Deficit ◽  
Tethered Flight ◽  
C 23 ◽  
Total Body

1. Water content varies from 64 to 73% of the total body weight and 72-76% of the fatless body weight of 24 hr. old unflown alatae of Aphis fabae. 2. Water loss during flight may be attributed to evaporation and excretion. A mean of 0.07 mg. water is lost per aphid during a 6 hr. tethered fligh a 25-26° C. and 57-82% R.H., corresponding to c. 9% body weight; at least 66% of the loss (c. 1% body weight/hr.) is by evaporation. 3. Excretion during fligh is not affected by relative humidity differences over the range 41-75% at 25%26° C., but the relative amounts of water lost during prolonged flight are inversely related to relative humidity, because of the effect of humidity on evaporation. 4. Proportion of water in he body does no change significantly during tethered fligh. Mean percentage water to total body weight increases from c. 68-69% during 6 hr.; mean percentage water to fatless body weight decreases from c. 74 to 73%. 5. Water loss is evidently not a limiting factor to fligh in atmospheres of saturation deficit less than c. 23 mm. Hg.

Vancomycin Removal during High-Volume Peritoneal Dialysis in Acute Kidney Injury Patients

2019 ◽  
Vol 39 (2) ◽  
pp. 183-187 ◽  
Author(s):  
Daniela Ponce ◽  
Welder Zamoner ◽  
Fernanda Moreira Freitas ◽  
André Balbi ◽  
Linda Awdishu
Keyword(s):  
Acute Kidney Injury ◽  
Body Weight ◽  
Peritoneal Dialysis ◽  
Kidney Injury ◽  
High Volume ◽  
Total Body Weight ◽  
Empirical Treatment ◽  
Total Body

Studies on vancomycin pharmacokinetics in acute kidney injury (AKI) patients on high-volume peritoneal dialysis (HVPD) are lacking. We studied the pharmacokinetics of intravenous (IV) vancomycin in AKI patients treated by HVPD who received a prescribed single IV dose of vancomycin (15 - 20 mg/kg total body weight) to determine the extent of vancomycin removal and to establish vancomycin dosing guidelines for the empirical treatment of AKI patients receiving HVPD. The application of 18 mg/kg vancomycin every 48 - 72 hours in AKI patients undergoing HVPD was required to maintain therapeutic concentrations.

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