Ecotoxicology最新文献_第5页

Ecological risk assessment of p-toluidine in freshwater, sediment, and soil media. 对甲苯胺在淡水、沉积物和土壤介质中的生态风险评价。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-12-02 DOI: 10.1007/s10646-024-02834-z

Inhye Lee, Daeyeop Lee, Hun-Je Jo, Hyun Soo Kim, Kyung Sook Woo, Kyunghee Ji

{"title":"Ecological risk assessment of p-toluidine in freshwater, sediment, and soil media.","authors":"Inhye Lee, Daeyeop Lee, Hun-Je Jo, Hyun Soo Kim, Kyung Sook Woo, Kyunghee Ji","doi":"10.1007/s10646-024-02834-z","DOIUrl":"10.1007/s10646-024-02834-z","url":null,"abstract":"Para-toluidine (p-toluidine) is a high production volume chemical, of which about 5,000 tons/year are imported into Korea as of the 2018 registration. This substance is mainly used as an intermediate in the manufacture of paints, azo dyes, and pigments. In this study, an ecological risk assessment of p-toluidine was performed to investigate the risk to the environment assuming the worst-case exposure scenario. Ecotoxicity data was collected from the literature and the predicted no effect concentration (PNEC) was derived. The predicted environmental concentration (PEC) was calculated using the SimpleBox Korea v2.0 model. Hazard quotient (HQ) was calculated based on PEC and PNEC. The concentration of p-toluidine was measured in soil samples from workplaces with a HQ exceeding 1 to verify the results of modeling. PNECs for surface water, sediment, and soil were 0.00022 mg/L, 0.0025 mg/kg (dw), and 0.00037 mg/kg (dw), respectively. Based on regional-scale PEC, the HQ of freshwater, sediment, and soil media were all less than 1, but the HQ exceeded 1 at some local sites. Based on the fact that the measured environmental concentration in soil samples around the workplace is below the limit of detection and that all waste is incinerated at the actual workplace, p-toluidine is not likely to pose a high risk to the environment in Korea.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"332-340"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Subchronic exposure to nonylphenol ethoxylate (NPE) induces cardiotoxicity and oxidative stress in American bullfrog tadpoles: a mechanistic approach. 亚慢性接触壬基酚聚氧乙烯醚（NPE）会诱发美洲牛蛙蝌蚪的心脏毒性和氧化应激：一种机理研究方法。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-10-29 DOI: 10.1007/s10646-024-02822-3

Yan Costa Gonçalves, Bruno Hofstatter da Silva, Camila Reis de Godoy, Francisco Tadeu Rantin, Ana Lúcia Kalinin, Diana Amaral Monteiro

{"title":"Subchronic exposure to nonylphenol ethoxylate (NPE) induces cardiotoxicity and oxidative stress in American bullfrog tadpoles: a mechanistic approach.","authors":"Yan Costa Gonçalves, Bruno Hofstatter da Silva, Camila Reis de Godoy, Francisco Tadeu Rantin, Ana Lúcia Kalinin, Diana Amaral Monteiro","doi":"10.1007/s10646-024-02822-3","DOIUrl":"10.1007/s10646-024-02822-3","url":null,"abstract":"Tropical regions, particularly those with high levels of endemism such as South America, harbor a diverse array of amphibian species. However, these regions often lack specific regulations governing the release of emerging contaminants, including the surfactant nonylphenol ethoxylate (NPE), into water bodies, which can have devastating consequences for these sensitive ecosystems. This study evaluated the sublethal effects of 16-day subchronic exposure to NPE at an environmentally relevant concentration of 30 µg/L on American bullfrog (Lithobates catesbeianus) tadpoles using multiple endpoints, including biometric parameters, antioxidant responses, oxidative stress biomarkers, heart rate, and myocardial contractility. Our results revealed that exposure to NPE elicited a range of harmful effects on tadpoles, including significant reductions in hepatic and ventricular mass, disruptions in antioxidant defenses leading to oxidative stress-mediated damage in cardiac, hepatic, and muscular tissues, and changes in heart function such as negative inotropism and lusitropism, and tachycardia. These sublethal effects could have significant ecological impacts, affecting not only immediate survival but also compromising overall fitness through the reallocation of energy reserves.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"181-192"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142544401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic effects of elevated temperature with pesticides on reproduction, development and survival of dung beetles. 温度升高与杀虫剂对蜣螂繁殖、发育和存活的协同效应。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-09 DOI: 10.1007/s10646-024-02825-0

Andrea Esquivel-Román, Fernanda Baena-Díaz, Carlos Bustos-Segura, Ornela De Gasperin, Daniel González-Tokman

{"title":"Synergistic effects of elevated temperature with pesticides on reproduction, development and survival of dung beetles.","authors":"Andrea Esquivel-Román, Fernanda Baena-Díaz, Carlos Bustos-Segura, Ornela De Gasperin, Daniel González-Tokman","doi":"10.1007/s10646-024-02825-0","DOIUrl":"10.1007/s10646-024-02825-0","url":null,"abstract":"In times of global change, high temperatures can increase the negative effects of pesticides and other stressors. The goal of this study was to evaluate, under controlled laboratory conditions, the effect of a moderate increase in temperature in combination with ivermectin (an antiparasitic medication used in cattle that is excreted in dung), an herbicide, and parasitic pressure, on the reproductive success, development time and adult survival of dung beetles Euoniticellus intermedius. Whereas high temperature increased the number and proportion of emerged offspring, it had synergistic negative effects in combination with the ivermectin, herbicide and parasite treatments. Moreover, high temperature in combination with ivermectin and with parasitism caused a synergistic increase of adult offspring mortality and, in combination with the herbicide, it synergistically accelerated development. These results indicate that high temperatures can enhance the negative effects of other stressors and act synergistically with them, harming dung beetles, a group with high ecological and economic value in natural and productive ecosystems. Although adult sex ratio was not affected by experimental treatments, contrasting responses were found between males and females, supporting the idea that both sexes use different physiological mechanisms to cope with the same environmental challenges. The effects that combined stressors have on insects deepen our understanding of why we are losing beneficial species and their functions in times of drastic environmental changes.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"207-218"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142616664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Contrasting behavioural responses to concurrent stressors in an aquatic snail: the importance of stress type and combination. 水生蜗牛对并发压力源的不同行为反应：压力类型和组合的重要性。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-20 DOI: 10.1007/s10646-024-02835-y

Álvaro Alonso, M C Llandres-Díez, P Cruces-Estepa

{"title":"Contrasting behavioural responses to concurrent stressors in an aquatic snail: the importance of stress type and combination.","authors":"Álvaro Alonso, M C Llandres-Díez, P Cruces-Estepa","doi":"10.1007/s10646-024-02835-y","DOIUrl":"10.1007/s10646-024-02835-y","url":null,"abstract":"Behaviour is a fundamental parameter for understanding the animal fitness, serving as an indicator of exposure to stressors. In ecosystems, animals often face multiple stressors simultaneously. Their behavioural responses may vary when exposed to individual stressors, whilst synergistic, additive, or antagonistic effects can result from the interaction of multiple stressors. Therefore, it is imperative to conduct studies that take into account the common occurrence of multi-stress scenarios in aquatic ecosystems. We tested the effects of three sources of stress (acidity (A), toxicity with acetone (T) and conspecific chemical cues (S)) on the behaviour of the aquatic snail Potamopyrgus antipodarum (Tateidae, Mollusca). We evaluated the impact of each stressor, as well as in combinations of two or three stressors simultaneously. The highest time to initiate movement was shown by the animals of the low water pH (A) followed by those exposed to the combination of low water pH and acetone exposure (AT). The differences between the time to initiate movement of each treatment with control revealed a marked decrease in the differences for the snails from the conspecific chemical cues (S) and ST treatments, which mean a higher time to initiate movements. It is concluded that behaviour varied depending on the source and combination of stress. While an acid environment and conspecific signals had contrasting effects when applied separately, their simultaneous exposure resulted in no significant impact. This highlights the importance of considering the combined effects of multiple stressors when extrapolating laboratory results to real-world scenarios, where organisms are often exposed to more than one stressor at a time.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"248-257"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142675454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of herbicide toxicity to Lemna minor L. and Azolla caroliniana Willd. 评估除草剂对 Lemna minor L. 和 Azolla caroliniana Willd.

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-23 DOI: 10.1007/s10646-024-02829-w

Bruna Ferrari Schedenffeldt, Bruno Barburgian Ramalho Siqueira, Rafaela Oliva da Silva, Patrícia Andrea Monquero

引用次数: 0

Picloram drift in Peltophorum dubium, a species native to the Brazilian Cerrado. Peltophorum dubium的Picloram漂移，一种原产于巴西塞拉多的物种。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-12-01 DOI: 10.1007/s10646-024-02841-0

José Ângeles Moreira de Oliveira, Leonardo David Tuffi Santos, Murilo Antônio Oliveira Ruas, Luan Mateus Silva Donato, Victor Augustus Vasconcelos de Oliveira, Yuri Silva Saraiva Guimarães, Richardson Fernandes de Souza, Rodinei Facco Pegoraro

{"title":"Picloram drift in Peltophorum dubium, a species native to the Brazilian Cerrado.","authors":"José Ângeles Moreira de Oliveira, Leonardo David Tuffi Santos, Murilo Antônio Oliveira Ruas, Luan Mateus Silva Donato, Victor Augustus Vasconcelos de Oliveira, Yuri Silva Saraiva Guimarães, Richardson Fernandes de Souza, Rodinei Facco Pegoraro","doi":"10.1007/s10646-024-02841-0","DOIUrl":"10.1007/s10646-024-02841-0","url":null,"abstract":"Peltophorum dubium, a common tree in areas close to agricultural activity in the Brazilian Cerrado, is vulnerable to damage from the drift of picloram, an herbicide widely used in pastures and agriculture in Brazil. The aim was to evaluate the application of 0.0; 19.2; 38.4; 76.8; 153.6; 307.2 g e. a. ha-1 of picloram, in simulated drift, on P. dubium, as well as its use as a bioindicator plant for herbicide contamination. The doses of picloram applied to the plants caused symptoms typical of the action of picloram on sensitive plants and led to the death of P. dubium at the highest doses tested. At its highest dose, picloram caused a 52.86% reduction in photosynthetic rate, 42.51% in transpiration rate, and 64.28% in stomatal conductance compared to the non-treated control. Picloram at a dose of 19.2 g e. a. ha-1 caused a reduction in N content and utilization and reduced plant protein. Picloram drift causes severe damage to P. dubium, reinforcing the concern about the risks of contamination with the herbicide. The species acted as a bioindicator of picloram in the environment and could be used in biomonitoring herbicide contamination.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"317-331"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polycaprolactam microplastics reduce allelopathic potential of Iris pseudacorus via toxic effects on stimulatory bacteria.

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-02-24 DOI: 10.1007/s10646-025-02862-3

Shengpeng Zuo, Qing Zhang, Shuo Yang, Huimei Wang

{"title":"Polycaprolactam microplastics reduce allelopathic potential of Iris pseudacorus via toxic effects on stimulatory bacteria.","authors":"Shengpeng Zuo, Qing Zhang, Shuo Yang, Huimei Wang","doi":"10.1007/s10646-025-02862-3","DOIUrl":"https://doi.org/10.1007/s10646-025-02862-3","url":null,"abstract":"Many studies have investigated the toxic effects of microplastics (MPs) ingested by aquatic animals, but the effects of MPs that adhere to the roots of macrophytes require further exploration. Thus, the present study investigated the dose-dependent toxic effects of adding 10-500 mg/kg of polycaprolactam microplastics (PCM) on allelopathic cyanobacterial inhibition by a wetland macrophyte due to the influence on rhizosphere bacteria in a pot trial. First, comparisons of sterilized and unsterilized Iris pseudacorus rhizosphere soil showed that the unsterilized soil could enhance the root activity and allelopathic inhibition of Microcystis aeruginosa cyanobacteria. Furthermore, adding 50-100 mg/kg PCM to the unsterilized soil significantly altered the abundances of many types of bacteria, and decreased the root activity and bacterial biodiversity in the rhizosphere. Importantly, PCM changed the secondary metabolites profile in the roots, as well as decreasing production of the allelochemical palmitic acid and the allelopathic potential of I. pseudacorus. Moreover, a dominant strain of functional bacterium AAP51 was identified as an allelopathic promoter, isolated, and successfully inoculated into the sterilized soil. The decomposition of PCM produced the toxic monomer caprolactam in the rhizosphere soil at an average rate of 0.067 mg/kg·d under treatment with 50 mg/kg PCM. Toxicological testing showed that 5 mg/kg caprolactam inhibited the activities of the dominant bacteria and expression of the allelopathic gene FAD2 to weaken the allelopathic effect of I. pseudacorus. Thus, the findings obtained in this study indicate that PCM inhibited the allelopathic potential of the macrophyte due to the release of toxic caprolactam damaging bacteria in the rhizosphere. Consequently, it is necessary to remove MP pollutants from aquatic ecosystems in order to maintain the strong allelopathic potential of macrophytes and efficiently control cyanobacterial blooms.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143482320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of neonicotinoid residues in Apis cerana indica bees and bee products: LC-MS/MS analysis and dietary risk assessment in a sunflower field study.

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-02-21 DOI: 10.1007/s10646-025-02857-0

Sowmiya Chandrasekar, Murugan Marimuthu, Suganthi Angappan, Saravanan Ayyaswami Pernamallur, Bhuvaneswari Kaithamalai, Shanmugam Sankaran Pagalahalli

{"title":"Effects of neonicotinoid residues in Apis cerana indica bees and bee products: LC-MS/MS analysis and dietary risk assessment in a sunflower field study.","authors":"Sowmiya Chandrasekar, Murugan Marimuthu, Suganthi Angappan, Saravanan Ayyaswami Pernamallur, Bhuvaneswari Kaithamalai, Shanmugam Sankaran Pagalahalli","doi":"10.1007/s10646-025-02857-0","DOIUrl":"https://doi.org/10.1007/s10646-025-02857-0","url":null,"abstract":"Bee colony decline, including in Apis cerana indica F., is a global concern linked to multiple factors, notably neonicotinoid insecticides. Residues in honey and pollen threaten bees and humans when exceeding safe levels, necessitating critical assessments of daily exposure thresholds. A controlled field experiment and dietary risk assessment studies were conducted to identify the impact of neonicotinoids. The LC-MS/MS method was developed to analyze residue in bee products. A survey of eight locations showed that only two honey samples, each from a different location, were contaminated with imidacloprid (0.03 µg g-1) and acetamiprid (0.07 µg g-1) residues. Similarly, a separate field experiment in sunflower detected neonicotinoid residues (0.025-0.456 μg g-1) in bee products. The field experiment indicated significantly higher bee mortality in the clothianidin sprayed field, using dead bee trap (88.00 bees) and cotton fabric spread (10.50 bees), than in the control field one day after spraying (DAS). Foraging activity significantly improved in the control plots, with increased incoming nectar (7.18 bees/min) and outgoing forager activity (13.28 bees/min) at 15 DAS. Colony growth parameters, namely, honey (61.88 cm2), pollen (41.25 cm2), brood area (91.00 cm2), and population (3479.50 bees) were highest in the control. The yield parameters followed the descending order of control > dimethoate > thiacloprid > imidacloprid > thiamethoxam > clothianidin. The dietary neonicotinoid residue risk evaluation showed moderate-high risk (risk quotient > 5) for bees but tolerable hazard (hazard quotient < 1) for humans. Hence, these neonicotinoid effects should be further explored through comprehensive risk analysis to safeguard native bee populations while maintaining effective crop protection practices.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143472364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevalence of insecticide resistance and enhanced detoxifying enzymes in field populations of Tuta absoluta (Lepidoptera: Gelechiidae) in the major Tomato growing regions of South India.

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-02-20 DOI: 10.1007/s10646-025-02859-y

Muthu Lakshmi Bavithra Chandra Mohan, Murugan Marimuthu, Balasubramani Venkatasamy, Harish Sankarasubramanian, Kumar K Krish, Jayakanthan Mannu

{"title":"Prevalence of insecticide resistance and enhanced detoxifying enzymes in field populations of Tuta absoluta (Lepidoptera: Gelechiidae) in the major Tomato growing regions of South India.","authors":"Muthu Lakshmi Bavithra Chandra Mohan, Murugan Marimuthu, Balasubramani Venkatasamy, Harish Sankarasubramanian, Kumar K Krish, Jayakanthan Mannu","doi":"10.1007/s10646-025-02859-y","DOIUrl":"https://doi.org/10.1007/s10646-025-02859-y","url":null,"abstract":"South American pinworm Tuta absoluta (Meyrick) is an invasive and major tomato pest that attained resistance or reduced susceptibility to most insecticides used in their management due to repeated and intensive applications. This study aimed to find the levels of resistance in T. absoluta populations collected from South Indian states against novel insecticides such as chlorantraniliprole 18.5% SC, flubendiamide 39.35% SC, spinosad 45% SC, indoxacarb 14.5% SC, and emamectin benzoate 5% SG using leaf dip bioassay. Among the eight populations collected from major tomato growing belts spanning three states of South India (Andhra Pradesh, Karnataka and Tamil Nadu), Krishnagiri of Tamil Nadu showed the highest level of resistance to flubendiamide and the least resistance was shown by the Tirupati population, with a resistance ratio of 174.89 and 2.24, respectively. Significant correlation was found between LC50 values of flubendiamide and chlorantraniliprole (0.859), emamectin benzoate and flubendiamide (0.855) and spinosad and emamectin benzoate (0.866). The biochemical assay conducted to quantify the mixed function oxidase (MFO), carboxyl/choline esterase (CCE) and glutathione S-transferase (GST) in the T. absoluta larval populations showed an increased level of MFO, CCE and GST in Krishnagiri population with 15.59, 1.72 and 6.02-fold, respectively compared to susceptible population. It showed that the detoxification enzyme plays an important role in the insecticide resistance of the field population of T. absoluta. The results serve as an initial assessment for further understanding of the molecular mechanisms of insecticide resistance at the genetic level to design and implement successful insecticide resistance management strategies.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143457236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The influence of colony habitat and egg components on lead and cadmium concentrations of great egrets and roseate spoonbills in southern Brazil.

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-02-20 DOI: 10.1007/s10646-025-02856-1

Cindy Tavares Barreto, Adalto Bianchini, Christy Morrissey, Fernando Azevedo Faria, Leandro Bugoni

{"title":"The influence of colony habitat and egg components on lead and cadmium concentrations of great egrets and roseate spoonbills in southern Brazil.","authors":"Cindy Tavares Barreto, Adalto Bianchini, Christy Morrissey, Fernando Azevedo Faria, Leandro Bugoni","doi":"10.1007/s10646-025-02856-1","DOIUrl":"https://doi.org/10.1007/s10646-025-02856-1","url":null,"abstract":"Birds are important sentinels of environmental contamination due to their well-known response to fluctuations in the concentration of trace elements and foraging preferences. Lead (Pb) and cadmium (Cd) are environmental contaminants that can cause lethal or sublethal effects, such as neurological, physiological, and reproductive dysfunction in a range of bird species. Here, we examined Pb and Cd concentrations in eggshells and egg contents of great egrets (Ardea alba) and roseate spoonbills (Platalea ajaja), waterbirds with contrasting foraging strategies, from two habitats, estuarine and limnetic, in southern Brazil. We found that colony habitat had an important influence on Pb and Cd concentrations in eggshells, confirming that environmental abiotic factors play a role in the uptake and bioavailability of these elements. Great egrets had higher Pb concentrations in eggshells and egg contents in the estuary habitat, as well as higher Cd in egg contents at the limnetic colony compared to roseate spoonbills. Contrastingly, spoonbills from the limnetic habitat had the highest Pb concentrations. Differences in concentrations of Pb and Cd among breeding sites and egg components may be related to the distinct foraging sites by females of egrets and spoonbills before the egg laying. Our results indicate ongoing estuarine and freshwater contamination by Pb and Cd in southern Brazilian coastal areas. Indeed, Cd concentrations in waterbirds were higher than the environmental standards, which is a concern for wildlife health and environmental quality. Finally, eggshells proved to be a sensitive, efficient, and low-impact sampling method to monitor low levels of contamination in waterbirds.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143457248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0