The impact of bio-logging on body weight change of the Eurasian beaver

Bio-logging is a common method to collect ecological data on wild animals, but might also induce stress, reduce body condition, and alter behavior. Eurasian beavers (Castor fiber) are a semi-aquatic and nocturnal species that are challenging to observe in the wild. Bio-loggers are hence useful tools to study their behaviour and movements, but this raises concerns of potential negative impacts of tagging. To investigate the potential negative impacts of glue-on tags, we compared body weight change for tagged and untagged Eurasian beavers. We hypothesized that tagged beavers would gain less body weight compared to untagged beavers, and that weight change might be affected by tagging length, tag weight, water temperature and the season of tagging. Daily percentage body weight change in relation to initial body weight during the first capture was compared during 57 tagging periods (18±7 days) and 32 controls periods (64±47 days). Body weight change varied between the two groups, with untagged beavers on average gaining daily weight whilst tagged beavers on average lost weight daily, indicating a negative effect of tagging. The average reduction in percentage body weight change per day for tagged beavers was small (0.1 ± 0.3%), and with large individual variation. Neither tag weight, number of tagging days, nor season were important in explaining body weight change of tagged animals. In other words, we found that tagging reduced daily body weight during the tagging period but were unable to determine the mechanism(s) responsible for this decline. Detrimental effects of tagging have important implications for animal welfare and can introduce bias in data that are collected. This calls for careful consideration in the use of tags. We conclude that studies investigating the effects of tagging should consider individual variation in the effects of tagging and, where possible, compare tagged animals with a control group.

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Antipsychotics result in more weight gain in antipsychotic naive patients than in patients after antipsychotic switch and weight gain is irrespective of psychiatric diagnosis: A meta-analysis

PLoS ONE ◽

10.1371/journal.pone.0244944 ◽

2021 ◽

Vol 16 (2) ◽

pp. e0244944

Author(s):

Maarten Bak ◽

Marjan Drukker ◽

Shauna Cortenraad ◽

Emma Vandenberk ◽

Sinan Guloksuz

Keyword(s):

Body Weight ◽

Weight Gain ◽

Weight Change ◽

Psychiatric Diagnosis ◽

Body Weight Gain ◽

Meta Analysis ◽

Bodyweight Gain ◽

Body Weight Change ◽

Meta Analyses ◽

The Impact

Introduction Antipsychotics are associated with bodyweight gain and metabolic disturbance. Previous meta-analyses were limited to mainly antipsychotic switch studies in patients with a diagnosis of schizophrenia or psychosis with short follow-up periods. The present meta-analysis aimed to analyse the impact of weight change in antipsychotic-naive and antipsychotics switch patients and whether body weight change depended on diagnosis. Method We performed a meta-analysis of clinical trials of antipsychotics that reported weight change, irrespective of psychiatric diagnosis. Outcome measure was body weight change. Studies were classified into antipsychotic-naive and antipsychotic-switch. Forest plots stratified by antipsychotic and the duration of antipsychotic use were generated and results were summarised in figures. Results In total, 404 articles were included for the quantitative synthesis. 58 articles were on antipsychotic naive patients. In the antipsychotic naive group, all antipsychotics resulted in body weight gain. In the antipsychotic switch group, most antipsychotics likewise resulted in bodyweight gain, with exception of amisulpride, aripiprazole and ziprasidone that showed no body weight gain or even some weight loss after switching antipsychotics. Diagnosis was not a discriminating factor of antipsychotic induced weight change. Conclusion Antipsychotic use resulted in substantial increase in body weight in antipsychotic-naive patients. In antipsychotic-switch patients the weight gain was mild and not present in amisulpride, aripiprazole and ziprasidone. In both groups, weight gain was irrespective of the psychiatric diagnosis.

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The Impact of Body Weight Change on the Dose Distribution of Intensity Modulated Proton Therapy for Cervical Cancer

International Journal of Radiation Oncology*Biology*Physics ◽

10.1016/j.ijrobp.2014.05.2600 ◽

2014 ◽

Vol 90 (1) ◽

pp. S916-S917 ◽

Cited By ~ 1

Author(s):

D. Wang ◽

S. Bhatia ◽

E. Dinges ◽

B. Gross ◽

J. Buatti ◽

...

Keyword(s):

Cervical Cancer ◽

Body Weight ◽

Proton Therapy ◽

Weight Change ◽

Dose Distribution ◽

Body Weight Change ◽

Intensity Modulated Proton Therapy ◽

Intensity Modulated ◽

The Impact

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Mucuna Flagellipes Chronic Diet Consumption Improves Exploratory Behaviour and Body Weight in Mice

Medical & Clinical Research ◽

10.33140/mcr.04.04.08 ◽

2019 ◽

Vol 4 (4) ◽

Keyword(s):

Body Weight ◽

Food Intake ◽

Water Intake ◽

Exploratory Behavior ◽

Weight Change ◽

The Body ◽

Control Group ◽

Free Access ◽

Body Weight Change ◽

Group 2

The use of Mucunaflagellipes in recent time has been on the increase as a result of its speculated therapeutic effect mostly on the protein level of the body. And owing to the fact that there are no detailed reports on Mucunaflagellipes on its effect on neurobehavioral parameters, this work is therefore intended to investigate the possible effects of this herb on the exploratory behavior and body weight in Swiss white mice. Twenty (20) mice of mixed sex were randomly divided in to two groups of ten mice each. Group 1 served as the control, while group 2 received the Mucunaflagellipes diet. The feeding lasted for 31 days. The open field maze task was used to assess exploratory behavior. All mice were allowed free access to clean drinking water. Daily food intake, water intake and body weight change were measured. Data were analyzed using the statistical tools (one way ANOVA and student t-test).The results showed that the Mucunaflagellipes diet fed mice had significantly increased (p<0.01; p<0.05) line crossings, close arm duration and stretch attend posture (SAP) compared to control. There was an increase in food intake and water intake (p<0.001 and p<0.01) compared to control. However, the body weight change was statistically higher but not significant when compared to the control group. Therefore, consumption of Mucunaflagellipes improves exploratory behavior and body weight in mice. These may be has a result of an unknown phytochemical compound present in Mucunaflagellipes.

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Apoptosis Sel Otot Rangka dan Perubahan Berat Badan pada Tikus Diabetes yang Diberi Ekstrak Umbi Bawang Dayak (Eleutherine palmifolia L., Merr)

Jurnal Ilmiah Kedokteran Wijaya Kusuma ◽

10.30742/jikw.v9i2.807 ◽

2020 ◽

Vol 9 (2) ◽

pp. 131

Author(s):

Lailia Dwi Kusuma Wardhani ◽

Olan Rahayu Puji Astuti

Keyword(s):

Skeletal Muscle ◽

Body Weight ◽

Muscle Cell ◽

Weight Change ◽

Cell Apoptosis ◽

Skeletal Muscle Cell ◽

Diabetic Rat ◽

Control Group ◽

Body Weight Change ◽

Muscle Cell Apoptosis

This study was undertaken to investigate the antidiabetic and antioxidant of bawang dayak bulbs (Eleutherine palmifolia L., Merr) extract (BDBE) on skeletal muscle cell apoptosis and body weight change in diabetic rat. Single doses alloxan 120 mg/kgBW were administered intraperitoneally to get diabetic rat. Twenty four male Wistar rat of three months old were used in this study. Rat were devided into six groups: negative control group (were not diabetic and treated) (K0), positive control group (were diabetic and treated CMC-Na) (K1), drug control group (were diabetic and administrated metformin as a standard drug) (K2), BDBE dosed 200 (P1), 400 (P2), and 800 mg/kgBW (P3). The treatment was conducted for 14 days. Hypoglycemic effect and body weight measured of all mice was determined at day 7 and 14 of treatment. At the end of research, all of rat were sacrificed and m. gastrocnemius were collected for apoptosis analysis by TUNEL staining and atrophy analysis by Hematoxilin-Eosin staining. The result of this study showed that BDBE decreased skeletal muscle cell apoptosis and mantained the skeletal muscle fiber diameter (atrophy) and body weight change in diabetes rat.

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