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Fig. 4 in The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

Fig. 4. Histological sections of Pagrus pagrus larvae, indicators of long term nutritional condition. Sagital section of 4 µm thick stained with Harris's hematoxylin and eosin counterstain (H-E). (a-c) nervous system, (d-f) cartilage, (g-i) muscle, (j-l) notochord; left = fed larvae, middle = delayed fed larvae and right = starved. hsn: heavily stained nucleus, ics: inter-cellular space, nc: notochord contraction, pn: prominent nucleus. Scale bar indicates 10 µm.

Fig. 1 in The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

Fig. 1. Mean values of morphometrical variables and standard error against larval age expressed as days after hatching (DAH) of Pagrus pagrus larvae from the different feeding treatments. BDA: body depth at the anus, ED: eye diameter, HD: head depth, SL: standard length. T0: before the experiment begins, T1: without food, T2: delayed feeding and T3: fed. Arrows indicate the moment when food was supplied to larvae in T3 (black) and T2 (dark grey). Initial condition of larvae (T0, white squares) was also included in order to allow comparisons.

Fig. 7 in The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

Fig. 7. Mean histological condition index (HCI) and standard error for Pagrus pagrus larvae calculated employing short or long term tissues and a mean value employing all tissues against larval age expressed as days after hatching (DAH) from the feeding treatments, a: without food (T1); b: delayed feeding (T2); c: fed (T3).

Fig. 5 in The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

Fig. 5. Mean histological condition index (HCI) and standard error for Pagrus pagrus larvae from the feeding treatments against larval age expressed as days after hatching (DAH). Different lowercase letters indicate significant differences (p<0.05) among feeding treatments, after one way ANOVA followed by post-hoc Tukey's test. Different capital letters indicate significant differences (p<0.05) among feeding treatments, after Kruskal Wallis test followed by multiple comparisons. T0: before the experiment begins, T1: without food, T2: delayed feeding and T3: fed.

Fig. 6 in The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

Fig. 6. Mean histological condition index (HCI) and standard error for Pagrus pagrus larvae from the feeding treatments calculated employing short or long term tissues and a mean value employing all tissues. Different letters indicate significant differences (p<0.05) among feeding treatments, after one way ANOVA followed by post-hoc Tukey's test. T1: without food, T2: delayed feeding and T3: fed, S: short term HCI, M: mean HCI, L: long term HCI.

Fig. 2 in The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

Fig. 2. Scatterplot of PC2 on PC1 for Pagrus pagrus larvae from the feeding treatments. a: PCA based upon normalized morphometrical variables; b: PCA based upon normalized morphometrical variables and observations grouped by feeding treatments. Correlations between the variables also showed. BDA: body depth at the anus, ED: eye diameter, HD: head depth. T1: without food, T2: delayed feeding and T3: fed. –N indicates normalized morphometrical variables.

opencc-zeroNov 2022View details →

dryad36/100

Nutritional condition and net body weight for adult female mule deer (Nov 2017–Mar 2018), Wyoming, USA

Many temperate and polar animals have developed physiological and behavioral adaptations to survive the challenging conditions of winter. Some animals hibernate to reduce energetic expenditure while other animals, including ungulates, migrate to avoid cold temperatures and deep snow. Despite moving vast distances between seasonal ranges, many migratory ungulates are unable to escape the energetic challenges of winter and often rely on reserves of fat to withstand food scarcity and a negative energy balance. The mobilization of fat for ungulates often is dependent on nutritional condition, yet the fine-scale rate at which ungulates mobilize fat throughout winter remains unclear. We took advantage of three sampling periods during the winter of 2017–18 on a population of mule deer that spends the winter in the Red Desert of south-central Wyoming, USA to investigate the fine-scale expenditure of fat from mid-autumn through late winter (November–March). Although the full effects of winter on forage were still minimal in mid-autumn, mule deer mobilized fat reserves 2.5 times faster in mid-autumn (November–December) than in late winter (December–March). The mobilization of fat strongly depended on nutritional condition with mule deer that entered a season with higher nutritional condition expending more fat than those of lower nutritional condition (P < 0.001). Adjusting mobilization of fat based on nutritional condition may allow temperate ungulates to survive winter without completely exhausting fat reserves and risking malnutrition.

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Nutritional condition and net body weight for adult female mule deer (Nov 2017–Mar 2018), Wyoming, USA

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publicNov 2022View details →

opencc-zeroJan 2022View details →

Dry season intensity has equivocal effects on the nutritional condition of understory birds in a Neotropical forest

Rainfall regime, the amount and timing of annual precipitation, can influence the breeding phenology, individual fitness, and population dynamics of tropical birds. In Neotropical regions with rainfall seasonality (i.e., wet and dry seasons), the warm phase of the El Niño Southern Oscillation (ENSO) can exacerbate seasonal drought and negatively impact avian survival and reproduction. However, the mechanisms underlying associations between seasonal drought conditions and avian demography are largely unexplored. One hypothesis is that nutritional condition mediates demographic responses to seasonal drought– individuals in poor condition may be less capable of balancing their energy budgets and consequently suffer reduced survival, lower reproductive output, or both. We estimated nutritional condition (i.e., scaled mass index, percent hematocrit, plasma lipid metabolites) as a proxy of energy balance in understory forest birds with contrasting population-level responses to dry season length. This study took place across two dry seasons of differing intensity in central Panama– an El Niño dry season (2016, severe drought) and a more typical dry season (2017). Scaled mass index remained relatively constant throughout both dry seasons and across years for five common focal species and among four foraging guilds (22 additional species, 27 species total). Three of five focal species did exhibit reduced nutritional condition (i.e., lower hematocrit and/or higher β-hydroxybutyrate) during the El Niño dry season but not during the more typical dry season. However, foraging guilds did not show consistent nutritional responses to seasonal drought and we found little evidence of reduced nutritional condition at the guild level, suggesting that many Neotropical forest bird species are capable of tolerating seasonal drought.

opencc-zeroMay 2022View details →

Diet nutritional condition affects tergal gland secretion and courtship success of male cockroaches

An integral part of the courtship sequence of the German cockroach (Blattella germanica) involves the male raising his wings to expose tergal glands on his dorsum. When a female cockroach feeds on the secretion of these glands, she is optimally positioned for mating. Core chemical components have been identified, but the effect of male diet on the tergal gland secretion remains unexplored. After validating the pivotal role of tergal feeding in mating, we starved or fed reproductively mature males for one week. We then paired each male with a sexually receptive female and observed their interactions through an infrared-sensitive camera. While starvation had no effect on male courtship behavior, it did influence the duration of female tergal feeding and mating outcomes. Females fed longer on the gland secretion of fed males, and fed males experienced greater mating success than starved males (73.9% vs. 48.3%, respectively). These results suggest that the quality of the tergal gland secretions, and by association mating success, are dependent on the nutritional condition of the male.

opencc-zeroAug 2022View details →

The nutritional condition of moose co-varies with climate, but not with density, predation risk, or diet composition

A fundamental question about the ecology of herbivore populations pertains to the relative influence of biotic and abiotic processes on nutritional condition. Nutritional condition is influenced in important, yet poorly understood, ways by plant secondary metabolites (PSMs) which can adversely affect a herbivore's physiology and energetics. Here we assess the relative influence of various abiotic (weather) and biotic (intraspecific competition, predation risk and diet composition) factors on indicators of nutritional condition and the energetic costs of detoxifying PSMs for the moose population in Isle Royale National Park (U.S.A.). Specifically, we observed interannual variation in the ratio of urea nitrogen to creatinine (UN:C), an indicator of nutritional restriction, over 29 years and the ratio of glucuronic acid to creatinine (GA:C), an indicator of energetic investment, in detoxifying PSMs over 19-years. Both UN:C and GA:C were measured in samples of urine-soaked snow. Most importantly, climatic factors explained 66% of the interannual variation in UN:C, with moose being more nutritionally stressed during winters with deep snow and during winters that followed warm summers. None of the biotic factors (density, predation, diet composition) were useful predictors of UN:C or GA:C. The absence of a relationship between diet composition and either UN:C or GA:C suggests that the nutritional ecology of wild herbivores is probably complicated by fine-scale variation in protein content and concentrations of PSMs amongst plants of the same species. UN:C increased with GA:C at both the individual and population-level. That result is consistent with detoxification being energetically costly, such that it impairs nutritional condition and also highlight show spatio-temporal variation in the intake and detoxification of PSMs may influence population dynamics. Lastly, because we observed interannual variation in nutritional condition over three decades and detoxification over two decades these findings are relevant to concerns about how herbivore populations respond to climate change.

restrictedIPD-UNDECIDEDFeb 2026View details →

Nutritional Intervention and Rehabilitation Treatment in Patients With Post-COVID Condition

ClinicalTrials.gov study NCT06063031. IPD Sharing: Not stated. Countries: 1. Publications: 1.

restrictedIPD-UNDECIDEDFeb 2026View details →

Assessment of the Clinical Condition and Way of Nutrition Patients Before and After Sleeve Gastrectomy

ClinicalTrials.gov study NCT05667558. IPD Sharing: Not stated. Countries: 1. Publications: 12.

closedIPD-NOFeb 2026View details →

Short- and Long-term Health Adverse Outcomes Associated With Nutrition Disorders and Nutrition Related Conditions in Hospitalized Older People

ClinicalTrials.gov study NCT05276752. IPD Sharing: NO. Countries: 1. Publications: 1.

restrictedIPD-UNDECIDEDFeb 2026View details →

Assessment of Relationship Between Preoperative Nutritional Status and Perioperative/Postoperative Conditions in Patients With Lung Cancer Scheduled for Lobectomy

ClinicalTrials.gov study NCT05417672. IPD Sharing: UNDECIDED. Countries: 1. Publications: 6.

publicJan 2022View details →

Dry season intensity has equivocal effects on the nutritional condition of understory birds in a Neotropical forest

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publicAug 2022View details →

The nutritional condition of moose co-varies with climate, but not with density, predation risk, or diet composition

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publicMay 2022View details →

Diet nutritional condition affects tergal gland secretion and courtship success of male cockroaches

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