Anais da Academia Brasileira de Ciencias最新文献

Breaking the glass ceiling: women's perceptions of academic-scientific careers in physics and nursing. 打破玻璃天花板：女性对物理和护理领域学术科学职业的看法。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-19 DOI: 10.1590/0001-3765202520241497

Ana Regina G Bezerra, Fernanda Staniscuaski, Marcia Cristina B Barbosa

{"title":"Breaking the glass ceiling: women's perceptions of academic-scientific careers in physics and nursing.","authors":"Ana Regina G Bezerra, Fernanda Staniscuaski, Marcia Cristina B Barbosa","doi":"10.1590/0001-3765202520241497","DOIUrl":"10.1590/0001-3765202520241497","url":null,"abstract":"Women's representation in science has grown, yet they still comprise only about a third of the global scientific community. While women are the majority in fields like social, biological, and health sciences, they remain underrepresented in others, such as exact sciences and engineering, from training stages to senior positions. Beyond gender-related challenges, motherhood introduces additional barriers. In this study, we analyzed the perceptions of research productivity fellows from the National Council for Scientific and Technological Development in the fields of physics and nursing regarding their academic-scientific trajectories. These fields present contrasting professional landscapes: women are a minority in physics and a majority in nursing. Data collected in 2020 from fellows active in 2019 revealed that being a woman and, in particular, being a mother impacts scientific careers differently across disciplines. In physics, participants perceived significant obstacles, including gender-based challenges and the disruption caused by motherhood. In nursing, however, motherhood was seen as more integrated into the academic journey. These findings underscore how the academic environment, shaped by the gender composition of a field, profoundly influences career experiences. Addressing these disparities requires context-specific strategies to create equitable and inclusive scientific environments.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20241497"},"PeriodicalIF":1.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144109290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of pH and temperature on Shiga toxin-producing Escherichia coli O157:H7 isolated from bovine reservoir. pH和温度对产志贺毒素大肠杆菌O157:H7分离的影响。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-19 DOI: 10.1590/0001-3765202520241080

Bianca M F Silva, Rafael M P Carvalho, Josiane R Domingues, Lucielen O Santos, Gustavo L P A Ramos, Alice G M Gonzalez

{"title":"Effect of pH and temperature on Shiga toxin-producing Escherichia coli O157:H7 isolated from bovine reservoir.","authors":"Bianca M F Silva, Rafael M P Carvalho, Josiane R Domingues, Lucielen O Santos, Gustavo L P A Ramos, Alice G M Gonzalez","doi":"10.1590/0001-3765202520241080","DOIUrl":"10.1590/0001-3765202520241080","url":null,"abstract":"The aim of this study was to evaluate the individual and combined effect of pH (between 4.0 and 7.0) and storage temperature (between 6 and 35°C) on two wild-type <italic>E. coli</italic> O157:H7 (STEC 902 and STEC 2004) strains. The experiments were performed in laboratory culture medium, employing Central Composite Rotational Design (CCRD). For comparison, Enteropathogenic <italic>E. coli</italic> (EPEC) O55:H7 and non-pathogenic <italic>E. coli</italic> (npEC) strains were used. To validate the model, seven additional tests not included in the experimental design were performed. The model showed goodness-of-fit. The CCRD results indicated that the temperature significantly affected the microbial population of <italic>E. coli</italic> strains studied. With best development at temperatures between 20 and 35°C, while refrigeration temperatures (between 6 and 10°C) are unfavorable for the development of STEC O157:H7, independent of pH. The wild-type STEC 902 and STEC 2004 strains showed similar behavior under pH and temperature conditions in laboratory culture medium. On the other hand, control strains showed different behavior than STEC strains, being significantly affected by pH. The data indicate that the response to stress resulting from exposure to different pH and temperature levels varies according to the <italic>E. coli</italic> strain evaluated.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20241080"},"PeriodicalIF":1.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144109311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Isonebula clavuslongus n. sp. (Isopoda: Cymothoidae) parasitizing Myloplus ternetzi (Norman, 1929), a fish of the family Serrasalmidae, in the Brazilian Amazon region. 在巴西亚马逊地区，寄生于一种Serrasalmidae的鱼Myloplus ternetzi （Norman, 1929）的Isonebula clavuslongus n. sp.（等足目：Cymothoidae）。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-16 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240590

Marcos Sidney B Oliveira, André M Alves, Elvis S Lima, Edson A Adriano, Marcos Tavares-Dias

{"title":"Isonebula clavuslongus n. sp. (Isopoda: Cymothoidae) parasitizing Myloplus ternetzi (Norman, 1929), a fish of the family Serrasalmidae, in the Brazilian Amazon region.","authors":"Marcos Sidney B Oliveira, André M Alves, Elvis S Lima, Edson A Adriano, Marcos Tavares-Dias","doi":"10.1590/0001-3765202520240590","DOIUrl":"https://doi.org/10.1590/0001-3765202520240590","url":null,"abstract":"Crustaceans of the family Cymothoidae are important components of the invertebrate fauna of marine and freshwater environments. The genus Isonebula Taberner, 1977, has only two described species (Isonebula maculatus (Taberner, 1977) and Isonebula acanthopleon Taberner 1998), which are both parasites of freshwater fish in South America. During a field survey of fish parasites in the Araguari River, state of Amapá, Brazilian Amazon region, we found a new species of the genus Isonebula infesting the mouth (on the host's tongue) of Myloplus ternetzi (Norman, 1929), a characiform of the family Serrasalmidae, for which we proposed the name Isonebula clavuslongus n. sp. Isonebula clavuslongus n. sp. differs from its congeneric species through the larger size of the dactyl of its 6th pereopod, with an inner measurement of 4.50 mm. Additionally, it possesses 7 joints in the second antenna, whereas 9 joints were reported for I. acanthopleon and I. maculatus. The present study thus expands the knowledge of the diversity of Cymothoidae in the Amazon region to 26 species, and of the genus Isonebula, with 3 species, which stands out as one of the genera with the lowest number of known species among Neotropical Cymothoidae that parasitize freshwater fish.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20240590"},"PeriodicalIF":1.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144172370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revisiting Diplococcium peruamazonicum Matsush. (Ascomycota) 31 years after its description. 再论秘鲁亚马孙双球虫。（子囊菌）在其被描述31年后。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241172

Daniela S Ferreira, Erlediel G DO Nascimento, Helen Maria P Sotão, Josiane S Monteiro

引用次数: 0

Chitosan/Maleic anhydride and Itaconic acid super porous hydrogels, containing levofloxacin for the treatment of visceral bleeding. 壳聚糖/马来酸酐与衣康酸超多孔水凝胶，含左氧氟沙星用于治疗内脏出血。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240463

Syeda Aleena Ubaid, Hafiz Muhammad Usman Abid, Muhammad Hanif, Khalid Mahmood, Memoona Qayyum, Nabeela Ameer

{"title":"Chitosan/Maleic anhydride and Itaconic acid super porous hydrogels, containing levofloxacin for the treatment of visceral bleeding.","authors":"Syeda Aleena Ubaid, Hafiz Muhammad Usman Abid, Muhammad Hanif, Khalid Mahmood, Memoona Qayyum, Nabeela Ameer","doi":"10.1590/0001-3765202520240463","DOIUrl":"https://doi.org/10.1590/0001-3765202520240463","url":null,"abstract":"Visceral bleeding poses a significant threat, requiring effective management through positively charged chitosan. This study aimed to address the limitations of chitosan-based hemostatic hydrogels by synthesizing a modified maleic anhydride complex of chitosan (MAC). Biocompatibility, biodegradability, and non-toxicity made MAC a suitable candidate for super porous hydrogels (SPHs) used in hemostatic applications. Graft polymerization synthesized MAC, confirmed via Fourier transform infrared spectroscopy, demonstrating superior antioxidant activity compared to chitosan and maleic anhydride. SPHs were prepared using MAC alone and with N, N-methylene bisacrylamide (MBA) as crosslinkers. MAC exhibited higher water absorbency and pH-dependent swelling than the MBA-chitosan complex. Drug loading and entrapment efficiency varied with the drug-to-SPH ratio. In vitro drug release studies showed sustained release (SR) with SPHs-MAC following zero-order kinetics and SPHs-MBA following Korsmeyer-Peppas. SPHs-MAC gelled more rapidly with temperature changes, and MAC hydrogels showed larger antimicrobial zones of inhibition (28±2).In vivo hemostasis studies revealed rapid hemostatic effects with MACL-H, reducing blood loss to 78.5 ± 1.5 mg in iver rat models. MAC hydrogels significantly lowered blood loss in rat tail amputation models compared to controls. This formulation demonstrates strong potential for effective visceral bleeding management.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20240463"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-dimensional calculation methods on global stability safety factor of diaphragm wall slurry trench based on minimum potential energy principle. 基于最小势能原理的连续墙浆液沟槽整体稳定安全系数三维计算方法。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240335

Lin Wang, Guojian Shao, Jingbo Su, Yang Sun, Dawei Guan, Yuebo Fan, Sen Yao, Chunyu Li

{"title":"Three-dimensional calculation methods on global stability safety factor of diaphragm wall slurry trench based on minimum potential energy principle.","authors":"Lin Wang, Guojian Shao, Jingbo Su, Yang Sun, Dawei Guan, Yuebo Fan, Sen Yao, Chunyu Li","doi":"10.1590/0001-3765202520240335","DOIUrl":"https://doi.org/10.1590/0001-3765202520240335","url":null,"abstract":"Due to the unreasonable assumptions for the three-dimensional (3D) sliding surface, the calculated results of the global stability safety factor (GSF) of the diaphragm wall slurry trench are often excessively large. In order to improve this phenomenon, the 3D calculation model on the GSF of trench wall is established by assuming the sliding surface to be a quarter ellipsoidal surface and the sliding mass to be a quarter ellipsoid. Then the 3D energy method is proposed based on the minimum potential energy principle, and further the 3D equivalent energy method is also come up with adopting the equivalent trench length to replace the actual trench length. The correctness of the models established and the rationality of the calculation methods proposed are verified based on ten engineering cases and the sensitivity of the GSF to various parameters is analyzed on the basis of seven design examples. Finally, the different calculation methods are used to check the global stability of the slurry trenches in practical engineering, the results prove that the calculation methods presented are rationality once again and the 3D equivalent energy method has better engineering applicability.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20240335"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long-term effects of cattle rearing on vegetation and soil in riparian forests in southern Brazil. 巴西南部河岸森林养牛对植被和土壤的长期影响。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240333

Jocimar C Milagre, Lucas José Mendes, Pedro S DA Silva, William Renato T Dos Santos, Guilherme Diego Fockink, Fabiane Granzotto, Agnes Estela Fontana, Ricardo B Schenato, Ana Paula M Rovedder

{"title":"Long-term effects of cattle rearing on vegetation and soil in riparian forests in southern Brazil.","authors":"Jocimar C Milagre, Lucas José Mendes, Pedro S DA Silva, William Renato T Dos Santos, Guilherme Diego Fockink, Fabiane Granzotto, Agnes Estela Fontana, Ricardo B Schenato, Ana Paula M Rovedder","doi":"10.1590/0001-3765202520240333","DOIUrl":"https://doi.org/10.1590/0001-3765202520240333","url":null,"abstract":"Comprehending the impacts of the presence of cattle on different compartments of riparian forests is essential for the management of these environments, which play a crucial role in biodiversity conservation and human well-being. The objective of this study was to assess the long-term effects of cattle on the structure (tree stratum and natural regeneration) and floristic composition of vegetation, as well as on the litter and soil carbon stock (0-5, 5-15, 15-30, and 30-100 cm) in riparian forests. We compared two forest areas in southern Brazil, one isolated from cattle for 28 years and another used by cattle with a high animal load. Our results indicate that cattle modify the floristic composition and structure of vegetation, mainly affecting litter carbon stock and the abundance, richness, and diversity of natural regeneration. However, we did not observe a significant change in soil carbon stock and its correlation with vegetation variables. Our findings emphasize the need to explore adaptation alternatives of livestock activities with the maintenance of riparian forest ecosystem services. Adequate cattle load management and fencing of riparian forests, with the installation of watering corridors for cattle, are essential actions to reconcile livestock production with forest conservation.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20240333"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy system contributions and determinants of performance in 400-meter military obstacle course. 能量系统对400米军用障碍赛成绩的影响及决定因素。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240476

Dalei Wang, Guole Jiang, Shuang Qin, Deyu Sun, Jiexing Yan, Yunji Chen, Yeqiong Wang, Yijie Tan

{"title":"Energy system contributions and determinants of performance in 400-meter military obstacle course.","authors":"Dalei Wang, Guole Jiang, Shuang Qin, Deyu Sun, Jiexing Yan, Yunji Chen, Yeqiong Wang, Yijie Tan","doi":"10.1590/0001-3765202520240476","DOIUrl":"https://doi.org/10.1590/0001-3765202520240476","url":null,"abstract":"The purpose of the study is to explore the energy system contributions and determinants of performance in 400-meter military obstacle course (400m-MOC), and establish a model for predicting the performance in 400m-MOC. 50 male cadets participated in this study. Using portable gas analyzers and a blood lactate test, the energy system contributions were calculated during 400m-MOC test. Correlation analysis was conducted to ascertain the relationships between the performance of the 400m-MOC and the contributions of three different energy systems, as well as body morphology and various physical fitness components. A linear regression model was developed to predict the performance outcomes in 400m-MOC. The contributions of three different energy systems during 400m-MOC test were: phosphagen system (17.94±1.23%), glycolytic system (27.94±2.48%), and aerobic oxidative system (54.12±2.76%). Completion time for the 400m-MOC test correlates significantly with military service length, strength, BMI, speed, speed endurance, and aerobic endurance capability. The regression equation was formulated as: estimated 400m-MOC completion time=22.556 + 0.065 × 5000-meter running time-52.677 × (pull-up reps/body weight) + 0.582 × 400-meter running time. The 400m-MOC is primarily powered by the aerobic oxidative system, with aerobic endurance, upper body strength, and speed endurance being particularly crucial factors affecting its performance.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20240476"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physiological parameters of freshwater stingrays from the Uatumã River Basin, Amazon, Brazil. 巴西亚马逊Uatumã河流域淡水黄貂鱼的生理参数。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240902

Maria Fernanda S Gomes, Maiko Willas S Ribeiro, Cristiane C Guimarães, Tiago C Nóbrega, Thayson L Pinto, Rayana M Paixão, Adriene Núzia A Santos, Paulo Henrique R Aride, Adriano T DE Oliveira

{"title":"Physiological parameters of freshwater stingrays from the Uatumã River Basin, Amazon, Brazil.","authors":"Maria Fernanda S Gomes, Maiko Willas S Ribeiro, Cristiane C Guimarães, Tiago C Nóbrega, Thayson L Pinto, Rayana M Paixão, Adriene Núzia A Santos, Paulo Henrique R Aride, Adriano T DE Oliveira","doi":"10.1590/0001-3765202520240902","DOIUrl":"https://doi.org/10.1590/0001-3765202520240902","url":null,"abstract":"Knowledge of freshwater stingrays' physiological parameters is essential for conserving elasmobranch diversity. This study aims to characterize the erythrogram and plasma biochemistry of freshwater stingrays from the Uatumã River basin for the first time. Specimens were captured in Presidente Figueiredo, São Sebastião do Uatumã, and Itapiranga, Amazonas, Brazil. Blood samples were collected from 69 stingrays and processed to obtain blood values. The species <italic>Potamotrygon orbignyi</italic>, <italic>Potamotrygon motoro</italic>, <italic>Potamotrygon scobina, Potamotrygon marquesi</italic> and specimens of the genus Paratrygon were identifield. Neonates and <italic>P. marquesi</italic> individuals were found was Itapiranga. At this stage, the blood profiles of <italic>P. orbignyi</italic> and <italic>P. scobina</italic> rays were lower than those of young, adult, and subadult individuals. The results were similar across locations, species, and existing data from the Amazon basin. The study provides a basis for future research on stingrays in the Uatumã River basin.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20240902"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphological study of the rare nematode Paradollfusnema amphisbaenia (Baker, 1981) (Cosmocercidae) and its first report in an amphibian host. 罕见线虫双翅线虫的形态研究（Baker, 1981）（Cosmocercidae）及其在两栖动物宿主中的首次报道。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240744

Paula A Gonçalves, Fabiano M Vieira, Gabriela Felix-Nascimento, Leonardo B Ribeiro, Diego César N Silva, Luís Cláudio Muniz-Pereira

{"title":"Morphological study of the rare nematode Paradollfusnema amphisbaenia (Baker, 1981) (Cosmocercidae) and its first report in an amphibian host.","authors":"Paula A Gonçalves, Fabiano M Vieira, Gabriela Felix-Nascimento, Leonardo B Ribeiro, Diego César N Silva, Luís Cláudio Muniz-Pereira","doi":"10.1590/0001-3765202520240744","DOIUrl":"https://doi.org/10.1590/0001-3765202520240744","url":null,"abstract":"The present study aimed to perform a morphological analysis of Paradollfusnema amphisbaenia, a parasite of Leptodactylus podicipinus (Leptodactylidae) in the Caatinga of Pernambuco, Brazil, using light and scanning electron microscopy (SEM), and to report for the first time the genus infecting an amphibian. Paradollfusnema species differs from other Cosmocercidae by having interlabia in the cephalic end. Main morphological characters that distinguish species in this genus are the number and distribution of caudal papillae, size of spicules and gubernaculum, and size of eggs. Nematodes analysed had lateral alae in both males and females, arrangement of caudal papillae: 14 pairs, distributed in 8 pairs + 1 unpaired precloacal, 1 adclocal, and 5 postcloacal, non-alate spicules with 100-170 µm long, and eggs 87-125 long x 68-110 µm wide. SEM analyses revealed the arrangement of labial papillae with greater accuracy, diverging from what was described in a previous study. This also enabled a more detailed analysis of the distribution of the caudal papillae and the presence of interlabia. There are no records of this genus parasitizing amphibians worldwide. This is the first morphological study of P. amphisbaenia using SEM, and the first report of this species infecting an anuran host.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20240744"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0