scholarly journals Short-term behavioural impact contrasts with long-term fitness consequences of biologging in a long-lived seabird

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Natasha Gillies ◽  
Annette L. Fayet ◽  
Oliver Padget ◽  
Martyna Syposz ◽  
Joe Wynn ◽  
...  

Abstract Biologging has emerged as one of the most powerful and widely used technologies in ethology and ecology, providing unprecedented insight into animal behaviour. However, attaching loggers to animals may alter their behaviour, leading to the collection of data that fails to represent natural activity accurately. This is of particular concern in free-ranging animals, where tagged individuals can rarely be monitored directly. One of the most commonly reported measures of impact is breeding success, but this ignores potential short-term alterations to individual behaviour. When collecting ecological or behavioural data, such changes can have important consequences for the inference of results. Here, we take a multifaceted approach to investigate whether tagging leads to short-term behavioural changes, and whether these are later reflected in breeding performance, in a pelagic seabird. We analyse a long-term dataset of tracking data from Manx shearwaters (Puffinus puffinus), comparing the effects of carrying no device, small geolocator (GLS) devices (0.6% body mass), large Global Positioning System (GPS) devices (4.2% body mass) and a combination of the two (4.8% body mass). Despite exhibiting normal breeding success in both the year of tagging and the following year, incubating birds carrying GPS devices altered their foraging behaviour compared to untagged birds. During their foraging trips, GPS-tagged birds doubled their time away from the nest, experienced reduced foraging gains (64% reduction in mass gained per day) and reduced flight time by 14%. These findings demonstrate that the perceived impacts of device deployment depends on the scale over which they are sought: long-term measures, such as breeding success, can obscure finer-scale behavioural change, potentially limiting the validity of using GPS to infer at-sea behaviour when answering behavioural or ecological questions.

Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 1019
Author(s):  
Barbara Frączek ◽  
Aleksandra Pięta ◽  
Adrian Burda ◽  
Paulina Mazur-Kurach ◽  
Florentyna Tyrała

The aim of this meta-analysis was to review the impact of a Paleolithic diet (PD) on selected health indicators (body composition, lipid profile, blood pressure, and carbohydrate metabolism) in the short and long term of nutrition intervention in healthy and unhealthy adults. A systematic review of randomized controlled trials of 21 full-text original human studies was conducted. Both the PD and a variety of healthy diets (control diets (CDs)) caused reduction in anthropometric parameters, both in the short and long term. For many indicators, such as weight (body mass (BM)), body mass index (BMI), and waist circumference (WC), impact was stronger and especially found in the short term. All diets caused a decrease in total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and triglycerides (TG), albeit the impact of PD was stronger. Among long-term studies, only PD cased a decline in TC and LDL-C. Impact on blood pressure was observed mainly in the short term. PD caused a decrease in fasting plasma (fP) glucose, fP insulin, and homeostasis model assessment of insulin resistance (HOMA-IR) and glycated hemoglobin (HbA1c) in the short run, contrary to CD. In the long term, only PD caused a decrease in fP glucose and fP insulin. Lower positive impact of PD on performance was observed in the group without exercise. Positive effects of the PD on health and the lack of experiments among professional athletes require longer-term interventions to determine the effect of the Paleo diet on athletic performance.


2019 ◽  
Vol 23 (3) ◽  
pp. 375-383
Author(s):  
Muhittin Ertilav ◽  
W. Nathan Levin ◽  
Aygul Celtik ◽  
Fatih Kircelli ◽  
Stefano Stuard ◽  
...  

2006 ◽  
Vol 2 (2) ◽  
pp. 253-256 ◽  
Author(s):  
Reinmar Hager ◽  
Rufus A Johnstone

Recent studies on mammals investigating parent-of-origin-specific effects such as genomic imprinting and maternal effects have demonstrated their impact on short-term measures of fitness, for example offspring growth. However, the long-term fitness consequences of parent-of-origin-specific effects and their role outside the immediate mother–offspring interaction remain largely unexplored. Here, we show that female mice mated to males that inherited the same set of paternal and maternal genes as themselves have a higher reproductive success than females mated to males of reciprocal genotype. Furthermore, we demonstrate that the early social environment experienced by an individual influences its reproductive success. Females raised with unrelated siblings in a mixed litter had a subsequent lower reproductive success than those that were fostered together with all their biological siblings in unmixed litters. Our results highlight the important influence of parent-of-origin-specific effects and conditions in early development on long-term reproductive success in mammals and suggest that parent-of-origin-specific effects may provide the underlying mechanism for beneficial coadaptation between genotypes, for example, in mate choice.


2021 ◽  
Vol 12 ◽  
Author(s):  
Graham W. Redgrave ◽  
Colleen C. Schreyer ◽  
Janelle W. Coughlin ◽  
Laura K. Fischer ◽  
Allisyn Pletch ◽  
...  

Proposed treatments for severe and enduring anorexia nervosa (SE-AN) focus on quality of life, and psychological and social functioning. By de-emphasizing weight restoration as a priority, however, premature diagnosis of SE-AN may reduce potential for recovery. The present study assessed the effect of weight restoration, illness duration, and severity on treatment outcome 6 months after discharge from an intensive, meal-based behavioral treatment program. Participants included hospitalized adult women (N = 191) with AN or underweight other specified feeding and eating disorder (OSFED). Participants were characterized as short-term (ill <7 years; n = 74) or long-term ill (ill ≥ 7 years; n = 117). Compared with short-term ill, long-term ill patients were older, had lower lifetime body mass index (BMI), more prior admissions, and exhibited greater depression and neuroticism. Long-term vs. short-term ill patients gained weight at the same rate (~2 kg/wk) and were equally likely to be weight restored by discharge (>75% reached BMI ≥ 19 kg/m2 in both groups). At 6-month follow-up (n = 99), both groups had equivalent self-reported BMI, and depression, drive for thinness, body dissatisfaction, and bulimia scores. The only predictor of BMI ≥ 19 kg/m2 at follow-up was discharge BMI. The likelihood of a BMI ≥ 19 kg/m2 at follow-up was 5-fold higher for those with discharge BMI ≥ 19 kg/m2. Few studies of long-term ill inpatients with AN have examined the impact of full weight restoration on short-term outcomes. This study supports the therapeutically optimistic stance that, regardless of illness duration, hospitalized patients with AN benefit from gaining weight to a BMI ≥ 19 kg/m2.


2019 ◽  
Author(s):  
Zhao Lei ◽  
Wang Jian Gang ◽  
Zheng Xing ◽  
Yu Xin

Abstract Background : To investigate the influence of body mass index (BMI) on the short-term and long-term outcome s including disease free survival (DFS) and overall survival (OS) rate in patients with liver carcinoma who underwent laparoscopic hepatectomy (LH) as primary treatment.Methods: Data were collected from 137 patients with liver carcinoma who underwent attempted LH between August 2003 and April 2014. Patients were classified into three groups depending on their BMI according to the WHO’s definition of obesity for Asia-Pacific region: underweight (BMI< 18.5kg/ m 2 , Group1), normal (18.5≤BMI< 23kg/m 2, Group2), overweight (BMI≥ 23kg/m 2, Group3) respectively. Short-term and long-term outcome s including overall survival (OS) and disease free survival (DFS) were compared across the BMI categories.Results: Of the 137 patients, 14 were underweight, 65 were normal weight, and 58 were overweight. The overall conversion rate of 137 patients was 20.44 %. Conversion rate in the three groups was 14.29%, 21.54% and 20.69 % (P=0.8284). The median follow-up duration was 26 months , 30 months , and 28 months, respectively. The mean postoperative hospital stay in the three groups were comparable (10.85±4.04, 11.57±5.56 , and 10.88±5.70, P=0.76). The complications rate was much higher in Group 1 (42.85%) than that in Group 2 and Group 3 (20.08% and 17.2%, P=0.048). Underweight patients were more likely to develop grade III or higher postoperative complications ( Clavien-Dindo classification ) as compared to normal and overweight patients (P=0.042). Overweight patients had a longer 3- and 5-years DFS (41.4%, 36.2%) than those for underweight (21.4%, 14.3%) and normal weight (28.1%, 21.9%) patients (P=0.048, and 0.025). Overweight patients had a longer 5-years OS (44.8%) than those for underweight (28.6%) and normal weight (28.0%) patients (P=0.043).Conclusions : Being underweight was associated with an increased perioperative complication and being overweight has a better 3-, 5-years DFS and 5-years OS than those in under and normal weight patients with liver carcinoma who underwent LH. Key Word s: body mass index, liver carcinoma, Prognosis, laparoscopic hepatectomy


PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6556 ◽  
Author(s):  
Aneesh P.H. Bose ◽  
Daniel Zayonc ◽  
Nikolaos Avrantinis ◽  
Natasha Ficzycz ◽  
Jonathan Fischer-Rush ◽  
...  

Understanding the effects of captivity-induced stress on wild-caught animals after their release back into the wild is critical for the long-term success of relocation and reintroduction programs. To date, most of the research on captivity stress has focused on vertebrates, with far less attention paid to invertebrates. Here, we examine the effect of short-term captivity (i.e., up to four days) on self-righting, aggregation, and predator-escape behaviours in wild-caught red sea urchins, Mesocentrotus franciscanus, after their release back into the wild. Aggregation behaviour, which has been linked to feeding in sea urchins, was not affected by handling or captivity. In contrast, the sea urchins that had been handled and released immediately, as well as those that were handled and held captive, took longer to right themselves and were poorer at fleeing from predators than wild, unhandled sea urchins. These results indicate that handling rather than captivity impaired these behaviours in the short term. The duration of captivity did not influence the sea urchin behaviours examined. Longer-term monitoring is needed to establish what the fitness consequences of these short-term behavioural changes might be. Our study nevertheless highlights the importance of considering a suite of responses when examining the effects of capture and captivity. Our findings, which are based on a locally abundant species, can inform translocation efforts aimed at bolstering populations of ecologically similar but depleted invertebrate species to retain or restore important ecosystem functions.


2021 ◽  
pp. postgradmedj-2020-139677
Author(s):  
Rui Yang ◽  
Wen Ma ◽  
Zi-Chen Wang ◽  
Tao Huang ◽  
Feng-Shuo Xu ◽  
...  

Purposes of studyThis study aimed to elucidate the relationship between obesity and short-term and long-term mortality in patients with acute myocardial infarction (AMI) by analysing the body mass index (BMI).Study designA retrospective cohort study was performed on adult intensive care unit (ICU) patients with AMI in the Medical Information Mart for Intensive Care III database. The WHO BMI classification was used in the study. The Kaplan-Meier curve was used to show the likelihood of survival in patients with AMI. The relationships of the BMI classification with short-term and long-term mortality were assessed using Cox proportional hazard regression models.ResultsThis study included 1295 ICU patients with AMI, who were divided into four groups according to the WHO BMI classification. Our results suggest that obese patients with AMI tended to be younger (p<0.001), be men (p=0.001) and have higher blood glucose and creatine kinase (p<0.001) compared with normal weight patients. In the adjusted model, compared with normal weight AMI patients, those who were overweight and obese had lower ICU risks of death HR=0.64 (95% CI 0.46 to 0.89) and 0.55 (0.38 to 0.78), respectively, inhospital risks of death (0.77 (0.56 to 1.09) and 0.61 (0.43 to 0.87)) and long-term risks of death (0.78 0.64 to 0.94) and 0.72 (0.59 to 0.89). On the other hand, underweight patients had higher risks of short-term(ICU or inhospital mortality) and long-term mortality compared with normal weight patients (HR=1.39 (95% CI 0.58 to 3.30), 1.46 (0.62 to 3.42) and 1.99 (1.15 to 3.44), respectively).ConclusionsOverweight and obesity were protective factors for the short-term and long-term risks of death in patients with AMI.


2012 ◽  
Vol 92 (5) ◽  
pp. 680-687 ◽  
Author(s):  
Nienke Paans ◽  
Martin Stevens ◽  
Robert Wagenmakers ◽  
Jan van Beveren ◽  
Klaas van der Meer ◽  
...  

Background Elevated body weight is associated with hip osteoarthritis (OA) and subsequently with total hip arthroplasty (THA). Patients with hip OA who are overweight often mention their restricted mobility as a factor that thwarts their attempts to be physically active and lose weight. There is some evidence that THA increases physical activity, but none for losing body weight after THA. Objective The purpose of this study was to analyze the short-term (1-year) and long-term (4.5-year) effects of a THA on body weight. Design This was an observational, multicenter cohort study. Methods For the short-term effect, all patients (N=618) were analyzed; for the long-term effect, a random subgroup (n=100) was analyzed. Preoperative and postoperative body weight and height were self-reported. Patients were categorized according to their preoperative body mass index (BMI &lt;25 kg/m2=normal weight, 25–30 kg/m2=overweight, &gt;30 kg/m2=obese). Clinical relevancy was set at a minimum of 5% weight loss compared with baseline. Results The mean age of the study group was 70 years (SD=8), 74% were women, and mean preoperative body mass was 79 kg (SD=14). One year after THA, a significant decrease in body weight of 1% and 3.4% occurred for the overweight and obese BMI categories, respectively. After 4.5 years, a significant decrease in body weight of 6.4% occurred for the obese BMI category. Limitations Height and weight—and thus BMI—were self-reported. Conclusion Patients in the overweight and obese groups showed a decrease, albeit not clinically relevant, in body weight after 1 year. After 4.5 years, a decrease that was relevant clinically was observed in the patients who were obese. It can be concluded that no clinically relevant reduction of weight occurred after THA, except in the long term for patients who were obese.


2000 ◽  
Vol 27 (6) ◽  
pp. 583 ◽  
Author(s):  
M. Giese ◽  
S. D. Goldsworthy ◽  
R. Gales ◽  
N. Brothers ◽  
J. Hamill

The long-term effects of oiling on the breeding success of rehabilitated oiled little penguins (Eudyptula minor) were examined over two consecutive breeding seasons following the Iron Baron oil spill in 1995. The commencement of egg laying was delayed among rehabilitated oiled penguins compared with non-oiled birds during the 1995/96 breeding season. During that season, hatching success (number of eggs hatched from those laid) was no different in nests containing rehabilitated oiled penguins than in those containing non-oiled birds, but overall egg success (number of pre-fledging chicks from the number of eggs laid) was significantly lower among rehabilitated oiled birds. This effect was predominant in nests containing a rehabilitated oiled female, where the probability of successfully fledging any chicks was 22% lower than in nests containing a non-oiled female. During the 1996/97 breeding season, there was no significant difference between either the hatching or egg success of rehabilitated oiled penguins and non-oiled birds. In both seasons, the pre-fledging masses of chicks from rehabilitated oiled penguins were significantly lower than those from non-oiled birds. The chicks of rehabilitated oiled penguins were therefore expected to have lower survival than chicks raised by non-oiled parents. Results indicate that oiling not only reduced the number of chicks raised by rehabilitated oiled penguins in the short term, but also decreased the quality of young produced for at least two seasons following the spill.


2020 ◽  
Vol 13 (10) ◽  
Author(s):  
Elizabeth D. Krebs ◽  
Jared P. Beller ◽  
J. Hunter Mehaffey ◽  
Nicholas R. Teman ◽  
Jamie L. W. Kennedy ◽  
...  

Background: As the population becomes increasingly obese, so does the pool of potential organ donors. We sought to investigate the impact of donors with body mass index ≥40 (severe obesity) on heart transplant outcomes. Methods: Single-organ first-time adult heart transplants from 2003 to 2017 were evaluated from the United Network for Organ Sharing database and stratified by donor severe obesity status (body mass index ≥40). Demographics were compared, and univariate and risk-adjusted analyses evaluated the relationship between severe obesity and short-term outcomes and long-term mortality. Further analysis evaluated the prevalence of severe obesity within the pool of organ donation candidates. Results: A total of 26 532 transplants were evaluated, of which 939 (3.5%) had donors with body mass index ≥40, with prevalence increasing over time (2.2% in 2003, 5.3% in 2017). Severely obese donors more likely had diabetes mellitus (10.4% versus 3.1%, P <0.01) and hypertension (33.3% versus 14.8%, P <0.01), and 67.4% were size mismatched (donor weight >130% of recipient). Short-term outcomes were similar, including 1-year survival (10.6% versus 10.7%), with no significant difference in unadjusted and risk-adjusted long-term survival (log-rank P =0.67, hazard ratio, 0.928, P =0.30). Organ donation candidates also exhibited an increase in severe obesity over time, from 3.5% to 6.8%, with a lower proportion of hearts from severely obese donors being transplanted (19.5% versus 31.6%, P <0.01). Conclusions: Donor severe obesity was not associated with adverse post-transplant outcomes. Increased evaluation of hearts from obese donors, even those with body mass index ≥40, has the potential to expand the critically low donor pool.


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