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1.
Syst Biol ; 73(2): 434-454, 2024 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-38490727

RESUMO

Across the Tree of Life, most studies of phenotypic disparity and diversification have been restricted to adult organisms. However, many lineages have distinct ontogenetic phases that differ from their adult forms in morphology and ecology. Focusing disproportionately on the evolution of adult forms unnecessarily hinders our understanding of the pressures shaping evolution over time. Non-adult disparity patterns are particularly important to consider for coastal ray-finned fishes, which can have juvenile phases with distinct phenotypes. These juvenile forms are often associated with sheltered nursery environments, with phenotypic shifts between adults and juvenile stages that are readily apparent in locomotor morphology. Whether this ontogenetic variation in locomotor morphology reflects a decoupling of diversification dynamics between life stages remains unknown. Here we investigate the evolutionary dynamics of locomotor morphology between adult and juvenile triggerfishes. We integrate a time-calibrated phylogenetic framework with geometric morphometric approaches and measurement data of fin aspect ratio and incidence, and reveal a mismatch between morphospace occupancy, the evolution of morphological disparity, and the tempo of trait evolution between life stages. Collectively, our results illuminate how the heterogeneity of morpho-functional adaptations can decouple the mode and tempo of morphological diversification between ontogenetic stages.


Assuntos
Evolução Biológica , Fenótipo , Filogenia , Animais , Nadadeiras de Animais/anatomia & histologia
2.
Ecol Lett ; 27(8): e14494, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39136244

RESUMO

Introduction history, including propagule pressure and residence time, has been proposed as a primary driver of biological invasions. However, it is unclear whether introduction history increases the likelihood that a species will be invasive or only the likelihood that it will be established. Using a dataset of non-native species historically available as ornamental plants in the conterminous United States, we investigated how introduction history relates to these stages of invasion. Introduction history was highly significant and a strong predictor of establishment, but only marginally significant and a poor predictor of invasive success. Propagule pressure predicted establishment better than residence time, with species likely to be established if they were introduced to only eight locations. These findings suggest that ongoing plant introductions will lead to widespread establishment but may not directly increase invasive success. Instead, other characteristics, like plant traits and local scale processes, may better predict whether a species becomes invasive.


Assuntos
Espécies Introduzidas , Estados Unidos , Plantas
3.
J Anim Ecol ; 2024 Jul 17.
Artigo em Inglês | MEDLINE | ID: mdl-39016072

RESUMO

Seasonal variability in environmental conditions is a strong determinant of animal migrations, but warming temperatures associated with climate change are anticipated to alter this phenomenon with unknown consequences. We used a 40-year fishery-independent survey to assess how a changing climate has altered the migration timing, duration and first-year survival of juvenile bull sharks (Carcharhinus leucas). From 1982 to 2021, estuaries in the western Gulf of Mexico (Texas) experienced a mean increase of 1.55°C in autumn water temperatures, and delays in autumn cold fronts by ca. 0.5 days per year. Bull shark migrations in more northern estuaries concomitantly changed, with departures 25-36 days later in 2021 than in 1982. Later, migrations resulted in reduced overwintering durations by up to 81 days, and the relative abundance of post-overwintering age 0-1 sharks increased by >50% during the 40-year study period. Yet, reductions in prey availability were the most influential factor delaying migrations. Juvenile sharks remained in natal estuaries longer when prey were less abundant. Long-term declines in prey reportedly occurred due to reduced spawning success associated with climate change based on published reports. Consequently, warming waters likely enabled and indirectly caused the observed changes in shark migratory behaviour. As water temperatures continue to rise, bull sharks in the north-western Gulf of Mexico could forgo their winter migrations in the next 50-100 years based on current trends and physiological limits, thereby altering their ecological roles in estuarine ecosystems and recruitment into the adult population. It is unclear if estuarine food webs will be able to support changing residency patterns as climate change affects the spawning success of forage species. We expect these trends are not unique to the western Gulf of Mexico or bull sharks, and migratory patterns of predators in subtropical latitudes are similarly changing at a global scale.

4.
Phytopathology ; : PHYTO05230175R, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-37942874

RESUMO

Phytophthora cactorum is the most common causal agent of Phytophthora crown rot and leather rot of strawberry, but P. nicotianae is also responsible for the disease in Florida. Studies of P. nicotianae populations have suggested that different groups of genotypes are associated with different hosts; however, it is not yet clear how many lineages exist globally and how they are related to different production systems. The aim of this study was to determine the genetic relationships of P. nicotianae isolates from Florida strawberry with genotypes reported from other hosts, quantify the genetic variation on strawberry, and test for an association with nursery source. A total of 49 isolates of P. nicotianae were collected from strawberry plants originating from multiple nursery sources during six seasons of commercial fruit production in Florida. Microsatellite genotyping identified 28 multilocus genotypes on strawberry that were distinct among 208 isolates originating from various hosts and locations. Based on STRUCTURE analysis, two genetic groups were identified: one consisting of isolates from strawberry, and the other comprising samples from different hosts. Multilocus genotypes were shared among nursery sources, and populations defined by nursery were not differentiated. Both mating types were found among the isolates from North Carolina- and California-origin plants and in most strawberry seasons; however, a predominance of A1 was observed, and regular sexual reproduction was not supported by the data. This study reveals a unique genetic population of P. nicotianae associated with strawberry and emphasizes the vital role of nursery monitoring in mitigating disease spread.

5.
J Infect Chemother ; 30(2): 123-128, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37758000

RESUMO

INTRODUCTION: In daycare centers, infants come in close contact with each other, and contact, droplet, and mouth-to-mouth infections may occur owing to sharing of toys. Additional effective disinfection methods should be considered aside from wiping with disinfectants-including alcohol or sodium hypochlorite solution-for environmental disinfection of daycare centers. We aimed to examine the usefulness of hypochlorous acid water atomization in the effective disinfection of the classroom environment and toys at a nursery school. METHODS: Environmental cultures of the nursery and toys were prepared to evaluate the species and bacterial load and to assess the contaminated areas. Staphylococcus aureus petri dishes were placed at high-frequency contact sites, and hypochlorous acid water was atomized to achieve a 0.03-ppm atmospheric chlorine concentration. After the atomization, the amount of S. aureus bacteria on the Petri dish and the changes in bacterial count isolated from the environment and toys were evaluated. RESULTS: Hypochlorous acid water atomization was performed for 5 h to avoid condensation. After a 3-h atomization, ≥99.99% of S. aureus was eliminated on petri dishes; furthermore, a significant disinfection effect was observed on environmental bacteria at least 1 h after atomization. For rubber and textile toys, the significant disinfection effect was observed 1 h after atomization, and for plastic toys, the effect was observed 3 h after atomization. CONCLUSIONS: Hypochlorous acid water atomization is a useful strategy to disinfect nursery school classrooms.


Assuntos
Desinfetantes , Ácido Hipocloroso , Lactente , Humanos , Ácido Hipocloroso/farmacologia , Escolas Maternais , Staphylococcus aureus , Água , Desinfetantes/farmacologia , Bactérias , Antibacterianos/farmacologia , Etanol/farmacologia
6.
J Infect Chemother ; 30(5): 379-386, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-37952843

RESUMO

BACKGROUND: The coronavirus disease-2019 (COVID-19) pandemic presented an unprecedented challenge to societies, necessitating adaptations in infection prevention measures. While there is ample data on infection prevention practices in workplace and healthcare settings, comprehensive data specific to childcare facilities has been lacking. METHODS: We conducted a nationwide web-based survey capturing responses from various childcare facilities (N = 549). This aimed to understand the adaptation in infection prevention measures between fiscal years 2022 and 2023, the status of events and activities, and the factors influencing decision-making related to infection prevention. RESULTS: From 2022 to 2023, most childcare facilities reduced infection prevention practices like mandatory mask-wearing (46.9 %-7.5 %) and eating without conversing (56.5 %-7.4 %), whereas they continued high levels of hand sanitization and checking child's health condition before attendance. The frequency of events and activities (e.g., athletic meets, field trips) increased, with many being held without restrictions. Surprisingly, 62.8 % of facilities used items not recommended for infection prevention. The influence of local government guidelines (risk ratio, 0.69; 95%CI, 0.53-0.90) and the input from junior teachers (risk ratio, 0.85; 95%CI, 0.72-0.99) were associated with reduced risk of using inappropriate items. Furthermore, childcare facilities emphasized the need to collaborate with public health and medical professionals for more accurate and efficient decision-making during pandemics. CONCLUSIONS: The survey provides insights into the evolving practices of Japanese childcare facilities during the COVID-19 pandemic. It underscores the importance of refining information sources, enhancing decision-making processes, and fostering collaboration with the medical community for future pandemics and natural disasters.


Assuntos
COVID-19 , Criança , Humanos , COVID-19/epidemiologia , COVID-19/prevenção & controle , Pandemias/prevenção & controle , Cuidado da Criança , Inquéritos e Questionários , Saúde Pública
7.
J Plant Res ; 137(4): 619-626, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38568301

RESUMO

The nurse effect is a positive interaction in which a nurse plant improves the abiotic environment for another species (beneficiary plant) and facilitates its establishment. The evergreen shrub Vaccinium vitis-idaea (a beneficiary plant) grows mainly under the dwarf shrub Pinus pumila (a nurse plant) in the alpine regions of central Japan. However, whether V. vitis-idaea shrubs under various P. pumila shrubs spread through clonal growth and/or seeds remains unclear. We investigated the clonal structure of V. vitis-idaea under the nurse plant P. pumila in Japanese alpine regions. MIG-seq analysis was conducted to clarify the clonal diversity of V. vitis-idaea in isolated and patchy P. pumila plots on a ridge (PATs), and in a plot covered by dense P. pumila on a slope adjacent to the ridge (MAT) on Mt. Norikura, Japan. We detected 28 multilocus genotypes in 319 ramets of V. vitis-idaea across 11 PATs and MAT. Three genets expanded to more than 10 m in the MAT. Some genets were shared among neighboring PATs or among PATs and MAT. These findings suggest that the clonal growth of V. vitis-idaea plays an important role in the sustainability of populations. The clonal diversity of V. vitis-idaea was positively related with the spatial size of PATs and was higher in MAT than in PATs at a small scale. Therefore, the spatial spread of the nurse plant P. pumila might facilitate the nurse effect on the genetic diversity of beneficiary plants, leading to the sustainability of beneficiary populations.


Assuntos
Pinus , Vaccinium vitis-Idaea , Japão , Vaccinium vitis-Idaea/genética , Pinus/genética , Pinus/crescimento & desenvolvimento , Pinus/anatomia & histologia , Genótipo , Variação Genética , Ecossistema
8.
Acta Paediatr ; 113(2): 267-275, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37846436

RESUMO

AIM: This study aimed to explore whether the supervision of community public health nurses (PHNs) and nursery school teachers (NSTs) by a specialist, familiar with Early Symptomatic Syndromes Eliciting Neurodevelopmental Clinical Examinations (ESSENCE), improved the agreement of ESSENCE-Questionnaire (ESSENCE-Q) scoring, across raters. METHODS: A PHN, two NSTs, and a speech-language pathologist (SLP), familiar with ESSENCE, independently assessed 32 children. The ESSENCE-Q results were divided into the first (child 1-18) and second groups (the 19th child and the following children). Changes in score discrepancies were analysed for ESSENCE-Q cutoff scores and total ESSENCE-Q scores across raters. The SLP scores were used as a reference to evaluate sensitivity and specificity. RESULTS: The total ESSENCE-Q scores of the PHN and NSTs showed higher concordance in the second group (p < 0.05). Comparisons of the differences between the PHN/NSTs and SLP in total ESSENCE-Q scores showed a significantly smaller difference in the NSTs' scores in the second group (p < 0.05). CONCLUSION: The findings suggest that specialist supervision may lead to a better agreement between PHN and NSTs regarding ESSENCE-Q scores.


Assuntos
Enfermeiros de Saúde Pública , Criança , Humanos , Síndrome , Inquéritos e Questionários
9.
Plant Dis ; 108(3): 550-557, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37807086

RESUMO

Almond band canker and prune Cytospora canker have become more severe in the last decade, especially in young orchards, in California. To test our hypothesis that young trees from nurseries could carry the canker-causing pathogens at latency phase to new orchards through transplanting, a multiyear survey on latent infection of canker-causing pathogens of budwood and young trees of almond and prune nurseries in California was conducted. A total of more than 1,730 samples including shoots of rootstocks and scions and grafting union cuttings were collected from 11 nurseries. A real-time quantitative PCR assay was applied to quantify the latent infection levels by six canker-causing pathogen taxa: Botryosphaeria dothidea and species of Cytospora, Diplodia, Lasiodiplodia, Neofusicoccum, and Phomopsis. For almond, the average incidences of latent infection caused by Lasiodiplodia spp. (43.6%) and Neofusicoccum spp. (24.2%) were significantly greater than those by the other four pathogen taxa. The molecular severity (MS) of latent infection caused by Neofusicoccum spp. (3.6) was significantly greater than those caused by other pathogen taxa, except for Lasiodiplodia spp. (2.6). For prune, the average incidence of latent infection caused by Cytospora spp. (13.5%) was significantly higher than those caused by B. dothidea (1.5%) and Diplodia spp. (1.3%) but not significantly higher than those caused by Lasiodiplodia spp. (6.9%), Neofusicoccum spp. (6.3%), and Phomopsis spp. (7.7%), respectively. Moreover, the average MS values caused by Cytospora spp. (3.8) and Neofusicoccum spp. (3.2) were the highest followed by those caused by B. dothidea (1.4), Lasiodiplodia spp. (2.2), and Phomopsis spp. (2.3). Different almond varieties showed various levels of susceptibilities to different canker-causing pathogens. This study concluded that Lasiodiplodia and Neofusicoccum are the predominant pathogen species in almond, and Cytospora is the most important canker-causing pathogen species in prune in nurseries. These findings confirmed the observations of predominancy of canker-causing pathogens in almond and prune orchards in California.


Assuntos
Berçários para Lactentes , Prunus dulcis , Humanos , Prunus dulcis/genética , Árvores , Doenças das Plantas , California
10.
Plant Dis ; 108(9): 2788-2794, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38679593

RESUMO

Phytopythium root rot caused by Phytopythium vexans is an emerging threat to red maple and Freeman maple production that seriously impacts plant growth, aesthetic, and economic values. This study reports on the resistance of red maple and Freeman maple cultivars against root rot disease caused by P. vexans. Rooted cuttings were received from a commercial nursery and planted in 3-gallon containers. For each cultivar, six plants were inoculated by drenching 300 ml/plant of P. vexans suspension, prepared by blending two plates of 10-day-old P. vexans culture/liter sterile water. An equal number of plants remained noninoculated and were drenched with 300 ml of sterile water. Two trials were conducted for 4 months in the greenhouse during the summer of 2023. Plants were evaluated for growth, physiology, Phytopythium root rot severity (0 to 100% of roots affected), and pathogen reisolation frequency. Out of seven cultivars, Somerset had the lowest Phytopythium root rot severity and pathogen reisolation frequency. Cultivars Autumn Blaze, Brandywine, and October Glory were highly susceptible to P. vexans, whereas Sun Valley, Summer Red, and Celebration were found to have a partial resistance to P. vexans. Cultivars Autumn Blaze, Brandywine, and October Glory had significantly lower chlorophyll content, net photosynthesis, and stomatal conductance compared with the other three cultivars under pathogen inoculation. Phytopythium root rot reduced plant height, width, total plant, and root fresh weight. The disease severity was negatively correlated with width, chlorophyll content, net photosynthesis, and stomatal conductance. These results can aid growers and landscapers in developing effective P. vexans management strategies.


Assuntos
Acer , Resistência à Doença , Doenças das Plantas , Raízes de Plantas , Acer/microbiologia , Doenças das Plantas/microbiologia , Raízes de Plantas/microbiologia , Fotossíntese
11.
Plant Dis ; 2024 Aug 08.
Artigo em Inglês | MEDLINE | ID: mdl-39115954

RESUMO

Eastern redbud (Cercis canadensis L.) is a popular and high-value woody ornamental plant native to the eastern and south-central United States of America (U.S.A.). In recent years, redbud production in the Southeastern U.S.A. has been greatly affected by a novel threat: vascular streak dieback (VSD). Infected plants exhibit a common set of symptoms, including leaf scorch, tip dieback, and vascular streaking that creates a marbled pattern in stem cross-section. Based on both conventional diagnosis and molecular identification, it has been found that the fungus Ceratobasidium sp. D.P. Rogers (Csp) is consistently associated with VSD-symptomatic eastern redbuds. However, the causal agent(s) of VSD has not yet been conclusively confirmed. Although eastern redbud has been the most frequently identified host tree, more than 25 other native plant genera have been confirmed to have VSD associated with Csp. The near-obligate nature of this fungus has made it challenging to culture, extract DNA, and conduct further studies to confirm its pathogenicity. This article highlights the emerging challenges of VSD, focusing on the following: 1) the recent history of VSD; 2) the increasing importance of VSD to woody ornamental nursery production in the U.S.A.; 3) the currently available protocols for isolating, culturing, storing, and maintaining the putative causal agent; 4) the rapid molecular detection of Csp; 5) phylogenetic findings on the origin and relatedness of Csp to previously recorded diseases, especially VSD in cacao (Theobroma cacao L.); and 6) preliminary results and observations from fungicide trials and cultivar screening in Tennessee. The article also outlines research needed to comprehensively understand VSD and accelerate the development of effective management strategies.

12.
J Therm Biol ; 124: 103943, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39151217

RESUMO

Mangrove habitats can serve as nursery areas for sharks and rays. Such environments can be thermally dynamic and extreme; yet, the physiological and behavioural mechanisms sharks and rays use to exploit such habitats are understudied. This study aimed to define the thermal niche of juvenile mangrove whiprays, Urogymnus granulatus. First, temperature tolerance limits were determined via the critical thermal maximum (CTMax) and minimum (CTMin) of mangrove whiprays at summer acclimation temperatures (28 °C), which were 17.5 °C and 39.9 °C, respectively. Then, maximum and routine oxygen uptake rates (MO2max and MO2routine, respectively), post-exercise oxygen debt, and recovery were estimated at current (28 °C) and heatwave (32 °C) temperatures, revealing moderate temperature sensitivities (i.e., Q10) of 2.4 (MO2max) and 1.6 (MO2routine), but opposing effects on post-exercise oxygen uptake. Finally, body temperatures (Tb) of mangrove whiprays were recorded using external temperature loggers, and environmental temperatures (Te) were recorded using stationary temperature loggers moored in three habitat zones (mangrove, reef flat, and reef crest). As expected, environmental temperatures varied between sites depending on depth. Individual mangrove whiprays presented significantly lower Tb relative to Te during the hottest times of the day. Electivity analysis showed tagged individuals selected temperatures from 24.0 to 37.0 °C in habitats that ranged from 21.1 to 43.5 °C. These data demonstrate that mangrove whiprays employ thermotaxic behaviours and a thermally insensitive aerobic metabolism to thrive in thermally dynamic and extreme habitats. Tropical nursery areas may, therefore, offer important thermal refugia for young rays. However, these tropical nursery areas could become threatened by mangrove and coral habitat loss, and climate change.


Assuntos
Termotolerância , Animais , Temperatura Alta , Ecossistema , Consumo de Oxigênio , Áreas Alagadas , Temperatura Corporal
13.
J Fish Biol ; 105(2): 539-556, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38831672

RESUMO

Selection of nursery habitats by marine fish, such as European sea bass (Dicentrarchus labrax), is poorly understood. Identifying and protecting the full range of juvenile nursery habitats is vital to supporting resilient fish populations and economically important fisheries. We examined how the condition, stomach fullness, and diet of juvenile European sea bass, along with their abundance, differ at high or low tide between the following estuarine habitats: saltmarsh, oyster reefs, shingle, sand, and mud edge habitats. Using a combination of fyke and seine netting we found no difference in sea bass abundance or condition across high-tide habitats, suggesting that rather than differentially selecting between them, juvenile sea bass use all available shallow habitats at high tide. Stomach fullness was significantly higher on saltmarsh and sand compared to mud, and thus these habitats may support better foraging. Dietary DNA metabarcoding revealed that sand and saltmarsh diets mostly comprised Hediste polychaetes, whereas zooplanktonic taxa dominated diets over mud. At low tide, sea bass abundance was highest in shingle and oyster reefs, where stomach fullness and condition were lowest. This may indicate a potential trade-off between using habitats for foraging and refuge. Although sea bass abundance alone does not capture productivity, the high abundance across all estuarine habitats at high tide suggests that it is important to consider the protection of a mosaic of interconnected habitats to support nursery functions rather than focus on individual habitat types.


Assuntos
Bass , Dieta , Ecossistema , Estuários , Animais , Bass/fisiologia , Dieta/veterinária
14.
J Fish Biol ; 104(5): 1290-1298, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38299718

RESUMO

This study delves into the foraging ecology of the cookiecutter shark (Isistius brasiliensis) in the Saint Peter and Saint Paul Archipelago (SPSPA), assessing bite marks on pelagic fishes collected between March and September 2018. Examination of 200 individuals from five species revealed the shark's predilection for targeting adult fish, ensuring efficient removal of energy-rich tissue layers. However, a notable exception is Thunnus albacares, preyed on predominantly during its juvenile stage, possibly due to vertical spatial segregation. Recent bites were pervasive across species, with wahoo displaying a distinctive pattern. Cookiecutter shark bites predominantly targeted the lateral body portion (>55%) except for yellowfin tuna, which exhibited a preference for the ventral region (95%). The estimated length distribution suggests the SPSPA as a potential nursery area for cookiecutter sharks. Bite mark positions and frequencies may be linked to fish behavior, swimming velocity, and fishing gear strategy, highlighting the complex interplay in pelagic ecosystems.


Assuntos
Comportamento Alimentar , Comportamento Predatório , Tubarões , Animais , Tubarões/fisiologia , Oceano Atlântico
15.
J Fish Biol ; 104(4): 1152-1164, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38230436

RESUMO

Surf zones are crucial habitats for many fish species, where they spend the initial stages of their lives, finding food and shelter. One such species is the pompano (Trachinotus ovatus). The aim of this study was to examine the age and diet of the pompano within the surf zone, along with any potential variations in the environment. The average size of the specimens was 10.61 ± 4.91 cm. The length-weight relationship was total weight (TW) = 0.0136*total length (TL)2.8512 (parameter a: 95% C.I.: 0.0130-0.0142 and parameter b: 95% C.I.: 2.8318-2.8705). The most abundant age classes were 0+ and 1+, making up 97% of the captured specimens, with significant differences in the abundance of age classes depending on the time of the day and season. The pompano primarily fed on clupeiforms, copepods, and mysids, with significant variations in diet based on the time of the day, season, and size of the specimens. This study contributes new information about the use of the surf zone by T. ovatus in its early years of life, underscoring the importance of these areas and their role as an additional ecosystem service.


Assuntos
Ecossistema , Peixes , Animais , Dieta/veterinária , Ração Animal/análise , Estações do Ano
16.
J Fish Biol ; 2024 Jun 26.
Artigo em Inglês | MEDLINE | ID: mdl-38924061

RESUMO

Seasonal migrations of marine fish between shallow summer feeding habitats and deep overwintering grounds are driven by fluctuations in the biotic and abiotic environment as well as by changes in the internal state. Ontogenetic shifts in physiology and metabolism affect the response to environmental drivers and may lead to changes in migration timing and propensity. In this study, we investigated the effect of temperature and body size on migration timing and depth distribution in acoustically tagged Atlantic cod, Gadus morhua, and saithe, Pollachius virens, during the period of seasonal migration from shallow summer habitats. The results from our study revealed a wide range of horizontal and vertical distribution of age 1 and 2 G. morhua within the fjord. Larger G. morhua inhabited deeper, cooler waters than smaller juveniles, likely reflecting size-dependent thermal preferences and predation pressure. Conversely, juvenile P. virens occupied primarily shallow waters close to land. The variation in depth distribution of G. morhua was mainly explained by body size and not, against our predictions, by water temperature. Conversely, the dispersal from the in-fjord habitats occurred when water temperatures were high, suggesting that seasonal temperature fluctuations can trigger the migration timing of P. virens and larger G. morhua from summer habitats. Partial migration of small juvenile G. morhua from in-fjord foraging grounds, likely influenced by individual body condition, suggested seasonal migration as a flexible strategy that individuals may use to reduce predation and energetic expenditure. Predation mortality rates of tagged juveniles were higher than previously suggested and are the first robust predation mortality rates for juvenile G. morhua and P. virens estimated based on acoustic transmitters with acidity sensors. The results have relevance for climate-informed marine spatial planning as under the scenario of increasing ocean temperatures, increasing summer temperatures may reduce the juveniles' resource utilization in the shallow summer nurseries, resulting in lower growth rates, increased predation pressure, and lower chances of juvenile winter survival.

17.
J Fish Biol ; 104(4): 1122-1135, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38193568

RESUMO

Population estimates are required for effective conservation of many rare marine species, but can be difficult to obtain. The critically endangered red handfish (Thymichthys politus) is a coastal anglerfish known only from two fragmented populations in southeast Tasmania, Australia. It is at a high risk of extinction due to low numbers, loss of habitat, and the impacts of climate change. To aid conservation efforts, we provide the first empirical population size estimates of red handfish and investigate other important aspects of the species' life history, such as growth, habitat association, and movement. We surveyed both red handfish local populations via underwater visual census on scuba over 3 years and used photographic mark-recapture techniques to estimate biological parameters. In 2020, the local adult population size was estimated to be 94 (95% confidence interval [CI] 40-231) adults at one site, and 7 (95% CI 5-10) at the other site, suggesting an estimated global population of 101 adults. Movement of individuals was extremely limited at 48.5 m (± 77.7 S.D.) per year. We also found evidence of declining fish density, a declining proportion of juveniles, and increasing average fish size during the study. These results provide a serious warning that red handfish are likely sliding toward extinction, and highlight the urgent need to expand efforts for ex situ captive breeding to bolster numbers in the wild and maintain captive insurance populations, and to protect vital habitat to safeguard the species' ongoing survival in the wild.


Assuntos
Conservação dos Recursos Naturais , Espécies em Perigo de Extinção , Animais , Conservação dos Recursos Naturais/métodos , Extinção Biológica , Peixes , Ecossistema
18.
Nurs Inq ; : e12665, 2024 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-39138913

RESUMO

The purpose of this study is to understand institutional violence (IV) in the relationships between health professionals, hospitalized children, and family members. This is a qualitative study developed at the pediatric inpatient unit of a university hospital in the city of Salvador, Bahia, Brazil. The research participants consisted of 39 health professionals who specialized in pediatrics and 10 family members of hospitalized children. Semi-structured interviews were the method used for data collection. Using discourse analysis as a basis and taking a Foucauldian perspective, the researchers observed that the expressions of IV could be traced to abusive power relations within the system. We found four discursive forms within the data set: communication problems as IV, violence through inattention and neglect, violence as an action and consequent materialization on the body, and psychological violence as a submission mechanism. Based on these findings, we argue that professionals, managers, the scientific community, and users might be able to better guarantee the safety of children by recognizing IV and effectively intervening in it.

19.
Nurs Crit Care ; 2024 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-39085033

RESUMO

BACKGROUND: Nurses accompany patients throughout the breaking bad news process. AIM: The aim of the research was to compare neonatal intensive care unit (NICU) nurses and well-baby nursery (WBN) nurses on their role, barriers and experiences in breaking bad news to parents/relatives during hospitalization. STUDY DESIGN: A cross-sectional comparative study. RESULTS: Two medical centres in Israel were employed. A 39-item questionnaire was distributed with 140 nurses participating in the study. STROBE Checklist was used. A total of 140 nurses participated in this study. There was no significant overall difference (p ≤ .45) between NICU and WBN nurses in their perception of their role in breaking bad news. Differences were found in barriers to the role which included a lack of information, lack of time and communication issues. No differences were found in the nurses' experiences in breaking bad news. NICU and WBN nurses reported that they received no support (n = 40, 58.8%; n = 45, 64.3%, respectively). No breaking bad news specialty team existed in either unit (NICU: n = 64, 91.4%; n = 60, 87.0%). CONCLUSIONS: Nurses in the WBN and NICU are involved in breaking bad news. The role of the nurse has not been fully acknowledged making it difficult to perform. Nurses' experiences in breaking bad news were varied. Nurses facing challenges should be provided guidance and support. This needs to be implemented. RELEVANCE TO CLINICAL PRACTICE: The role played by nurses in breaking bad news has not been fully acknowledged making it difficult to perform. Nurses need to receive formal training and support in order to improve this practice.

20.
Nihon Koshu Eisei Zasshi ; 71(4): 220-230, 2024 Apr 25.
Artigo em Japonês | MEDLINE | ID: mdl-38267047

RESUMO

Objectives The relationship between household income and dietary intake among older children and adults in Japan has been studied. However, few studies have examined the relationship in younger children, and we believe that this should be taken into consideration from early childhood to correct health disparities. In this study, we examined the relationship between family income and dietary food group intake, and investigated the adequacy of food intake based on the Japanese Food Guide Spinning Top for young children aged 3 to 6 years attending nursery school. The goal of this study was to obtain trends in food intake that can be used to improve poor dietary intake of young children caused by socioeconomic factors.Methods A dietary survey using the food weighing or recording method and a self-administered questionnaire on dietary status were conducted on two non-consecutive days, including weekdays and weekends, from October to December 2019 or 2020. The participants were 761 young children (423 boys and 338 girls) attending nursery schools in seven cities in Japan. Equivalent income was calculated from household income and the number of family members indicated in the dietary status survey. Intake of each food group and consistency with the Japanese Food Guide Spinning Top were compared in five quintiles.Results Compared to the low equivalent income group, the high equivalent income group showed a decreasing trend in cereal intake and an increasing trend in the intake of sugar and sweeteners, green and yellow vegetables, and dairy products. The percentage of the low-income group who did not meet the definition of adequate intake using the Japanese Food Guide Spinning Top was lower for meals that include cereals and grain products, and higher for meals that include meat and fish, vegetable, milk and dairy products, and fruits.Conclusion The lower income group had higher intake of cereals and lower intake of vegetables and fruits compared to the higher income group. This finding is similar to the results of studies in adults and older children. However, based on the Japanese Food Guide Spinning Top, >90% of young children have a diet that fall below the adequate intake of meals, including vegetable dishes and even on weekdays, which suggests a general vegetable deficiency in young children. Multifaceted support is required to address this concern, including measures to correct disparities of income and to ensure desirable nutrient intake in early childhood.


Assuntos
Renda , Escolas Maternais , Humanos , Pré-Escolar , Masculino , Feminino , Criança , Japão , Inquéritos sobre Dietas , Ingestão de Alimentos , Dieta , Fatores Socioeconômicos , Inquéritos e Questionários , Características da Família
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