Annals of parasitology最新文献

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Changing parasite landscapes in captive primates: methodological advances and findings from the Wrocław Zoo. 圈养灵长类动物中不断变化的寄生虫景观:来自Wrocław动物园的方法学进展和发现。
Annals of parasitology Pub Date : 2025-12-27 DOI: 10.17420/ap71.556
Weronika Helena Hildebrand, Grzegorz Zaleśny
{"title":"Changing parasite landscapes in captive primates: methodological advances and findings from the Wrocław Zoo.","authors":"Weronika Helena Hildebrand, Grzegorz Zaleśny","doi":"10.17420/ap71.556","DOIUrl":"10.17420/ap71.556","url":null,"abstract":"<p><p>Long-term parasitological studies of non-human primates (NHPs) kept in zoological gardens offer valuable insights into host-parasite relationships in controlled settings. Despite regular veterinary supervision and preventative measures, many surveys have shown that captive primates often harbour diverse intestinal parasites, including species of zoonotic importance. This work summarises the historical and current parasitological research conducted on primates at Wrocław Zoological Garden, Poland, and highlights changes in diagnostic techniques, parasite diversity, and infection patterns over time. Early studies, employing classical coproscopic methods such as direct smear, decantation, and flotation, reported an overall parasite prevalence of around 40%, mainly nematodes. Later investigations expanded sampling strategies, enabling assessment of anthelmintic efficacy and resistance in specific taxa. Environmental and managerial factors - including close contact with caretakers and visitors, limited enclosure space, and inadequate pest control - were identified as key contributors to transmission. Over the past twenty years, the use of molecular diagnostic tools has considerably improved detection sensitivity, particularly for intestinal protozoa that were often missed by traditional microscopy. A notable shift in the parasite community composition has been observed: helminth prevalence has decreased, while protozoan infections have become more frequent. Whether these changes are due to methodological advancements or actual alterations in parasite ecology remains uncertain. Overall, the findings indicate that enhancements in husbandry, enclosure hygiene, and veterinary care have effectively reduced helminth transmission, yet protozoan infections continue to be common. Ongoing monitoring with molecular methods, alongside comparative studies across European zoological institutions, is essential for a comprehensive understanding of the long-term dynamics of primate parasitism in captivity.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"145-156"},"PeriodicalIF":0.0,"publicationDate":"2025-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145846169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Infectivity of gastrointestinal nematode parasites of sika deer (Cervus nippon) for calves and lambs. 梅花鹿(Cervus nippon)胃肠道线虫寄生虫对小牛和羔羊的传染性。
Annals of parasitology Pub Date : 2025-12-21 DOI: 10.17420/ap71.554
Steffen Rehbein, Martin Visser
{"title":"Infectivity of gastrointestinal nematode parasites of sika deer (Cervus nippon) for calves and lambs.","authors":"Steffen Rehbein, Martin Visser","doi":"10.17420/ap71.554","DOIUrl":"10.17420/ap71.554","url":null,"abstract":"<p><p>Sika deer, mainly of Japanese origin, have been introduced into the British Isles and central Europe and established free-ranging populations, expanding in several countries. Introduction of the sika deer was associated with the transfer of Spiculopteragia houdemeri which has been reported for the first time in 2003 from Germany and thereafter from sika deer and other cervid species in some countries in Europe. Surveys of livestock parasites have shown that cervid-specific gastrointestinal nematodes of native deer occur in natural infections in cattle and sheep, usually at low level, and infections were experimentally transferred. However, to date there is no such information for sika deer-specific nematodes to livestock. To investigate the establishment of sika deer-derived gastrointestinal nematodes in domestic ruminants, three calves and two lambs were challenged with mixed burdens of infective larvae (~90% ostertagids, ~10% Oesophagostomum) cultured from the faeces of free-ranging sika deer; calves received 20,000 or 30,000 larvae, lambs 12,000 or 13,000. Establishment rate of ostertagids varied from 0.4% to 3.1% in the calves and was 1.3% and 8.4% in the lambs. Spiculopteragia houdemeri, index ostertagid of Japanese sika deer, was the dominant species, recovered from all animals. In addition, Ostertagia leptospicularis and Spiculopteragia boehmi, index ostertagids of native roe deer (Capreolus capreolus) and red deer (Cervus elaphus), respectively, were isolated from calf and lamb and Cooperia pectinata from one lamb. Oesophagostomum venulosum established in the lambs at ~6% but no Oesophagostomum was found in any calf. This investigation indicates that both calves and lambs are permissive to the sika deer-specific S. houdemeri and other deer-derived nematodes which reached maturity, but susceptibility to infections was apparently low.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"117-124"},"PeriodicalIF":0.0,"publicationDate":"2025-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145802893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultrasonic cavitation and decasan irrigation for residual cavity management in liver cystic echinococcosis: a retrospective comparative study from an endemic region. 肝囊性包虫病超声空化与地沟灌洗治疗残留空化的回顾性比较研究。
Annals of parasitology Pub Date : 2025-11-16 DOI: 10.17420/ap71.552
Duschan Shukhratovich Sapaev, Farkhod Radjabovich Yakubov, Daniyar Shamuratovich Xodjiev, Kudratbek Bakhtiyarovich Babajanov, Nizamaddin Daniyar Ogli Sultan Zada, Navruz Odilbek Ogli Matkurbonov, Jasurbek Islombekovich Shonazarov, Komila Khujayazovna Khayitboeva
{"title":"Ultrasonic cavitation and decasan irrigation for residual cavity management in liver cystic echinococcosis: a retrospective comparative study from an endemic region.","authors":"Duschan Shukhratovich Sapaev, Farkhod Radjabovich Yakubov, Daniyar Shamuratovich Xodjiev, Kudratbek Bakhtiyarovich Babajanov, Nizamaddin Daniyar Ogli Sultan Zada, Navruz Odilbek Ogli Matkurbonov, Jasurbek Islombekovich Shonazarov, Komila Khujayazovna Khayitboeva","doi":"10.17420/ap71.552","DOIUrl":"https://doi.org/10.17420/ap71.552","url":null,"abstract":"<p><p>Most often, Echinococcus parasitizes in the liver, causing the need for surgical treatment, the results of which currently do not meet expert expectations due to the high frequency of postoperative complications and the risk of relapse. The aim of the study is to improve the results of surgical treatment of liver echinococcosis by improving the tactical aspects of treatment and elimination of the residual cavity after echinococcectomy to prevent the development of purulent-septic complications. The object of the study was 442 patients with liver echinococcosis treated in the abdominal surgery of the Khorezm Regional Multidisciplinary Medical Center for the period from 2010 to 2023. To achieve the research goal and address the objectives, the following methods were used: general clinical, biochemical, instrumental and statistical methods. When determining the tactics and volume of surgical intervention, we recommend using the proposed method for treating the residual cavity using ultrasonic cavitation and a 0.02% Decasan solution, which minimized the development of purulent-septic complications in the immediate and long-term period after surgery. The new approach significantly reduced postoperative drainage needs (63.8% vs 36.6%, P < 0.001), complications (12.5% vs 5.4%, P < 0.001), and increased uncomplicated recovery (93.1% vs 80.0%). Drainage duration decreased from 11.3% to 3.5% in the long-term follow-up.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"99-111"},"PeriodicalIF":0.0,"publicationDate":"2025-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145740665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detection of Serpentoplasma sp. (Apicomplexa: Haemohormidiidae) in dice snake (Natrix tesellata) (Colubridae: Natrix) in Azerbaijan.
Annals of parasitology Pub Date : 2025-11-16 DOI: 10.17420/ap71.553
Turkan Gurbanova
{"title":"Detection of Serpentoplasma sp. (Apicomplexa: Haemohormidiidae) in dice snake (Natrix tesellata) (Colubridae: Natrix) in Azerbaijan.","authors":"Turkan Gurbanova","doi":"10.17420/ap71.553","DOIUrl":"https://doi.org/10.17420/ap71.553","url":null,"abstract":"<p><p>The aim of this study was to determine the presence of blood parasites in dice snake (Natrix tesellata) from Pirallahi Island, located off the western coast of the Caspian Sea of Azerbaijan. The dice snake is one of the most widespread and common species of the herpetofauna of Azerbaijan. This species of snakes represents an important link in the natural balance, since included in various biocenotic connections. A total of 67 specimens of dice snake individuals were captured during spring and summer 2021-2024. Blood sampling was carried out from the caudal vein by insulin syringe. The blood smears were stained with Giemsa solution and examined by light microscopy for haemoparasites. Microscopical examination of the blood smears revealed that 23 snakes of 67 (15.4%) were infected with Serpentoplasma sp. Multiply infected erythrocytes with one to three parasites were unusual, with most host cells containing a single inclusion. Infected thrombocytes were not detected. The parasites contained round-to-oval inclusions from small, anaplasmoid-like bodies, vacuoles with a dot or two of apparent chromatin on their margin or without chromatin dots. The structures were intracytoplasmic, measured 3-3.8 Å~ 2.5-3.3 μm and occurred as rounded vacuole-like structures, one in each infected erythrocyte. This is the first finding of haemoparasites in dice snakes in Azerbaijan.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"113-116"},"PeriodicalIF":0.0,"publicationDate":"2025-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145740717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Patient with myelodysplastic neoplasm and giant amoebic liver abscess imported from Italy complicated by intestinal obstruction: a case report and review of the literature. 意大利输入骨髓增生异常肿瘤合并巨大阿米巴肝脓肿合并肠梗阻1例并文献复习。
Annals of parasitology Pub Date : 2025-09-20 DOI: 10.17420/ap71.551
Marta Szczygieł, Mateusz Hałas, Marek Spichalski, Maria Piotrowiak, Małgorzata Paul
{"title":"Patient with myelodysplastic neoplasm and giant amoebic liver abscess imported from Italy complicated by intestinal obstruction: a case report and review of the literature.","authors":"Marta Szczygieł, Mateusz Hałas, Marek Spichalski, Maria Piotrowiak, Małgorzata Paul","doi":"10.17420/ap71.551","DOIUrl":"https://doi.org/10.17420/ap71.551","url":null,"abstract":"<p><p>Infection with Entamoeba histolytica is widespread and cosmopolitan, but is particularly common in hot zone countries in areas with poor sanitary and hygienic conditions, a lack of access to safe drinking water, and noncompliance with food hygiene. Currently, no cases of indigenous E. histolytica infections have been registered in Poland; only cases imported from areas with a hot climate zone have been reported. So far, no severe extraintestinal amoebiasis has been diagnosed in Poland in people returning from the Mediterranean area. We report an unusual case of concomitant large liver abscess complicated by small bowel obstruction in an Italian immigrant with chronic myelodysplastic leukaemia who had been in Poland for 10 years. The patient did not present with clinical symptoms of colitis like diarrhoea. The patient had not travelled outside Europe and had never been in tropical areas. The clinical course of the infection, the results of imaging, laboratory, serological and parasitological tests, and the therapeutic methods used are discussed in detail. Attention is drawn to the need to consider amoebiasis and its dangerous complications in the differential diagnosis of abdominal pain and pathological space-occupying lesions in the liver of unknown etiology in people returning from travel to the Mediterranean climate.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"85-93"},"PeriodicalIF":0.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Giardia intestinalis diarrhea in a HIV-positive patient with Pneumocystis jiroveci pneumonia, as a possible symptom of IRIS. 艾滋病毒阳性的耶氏肺囊虫肺炎患者肠第鞭毛虫腹泻,可能是IRIS的症状。
Annals of parasitology Pub Date : 2025-09-20 DOI: 10.17420/ap71.550
Łukasz Pielok, Stanisław Królak, Monika Lisiecka, Joanna Swarcewicz, Arleta Kowala-Piaskowska
{"title":"Giardia intestinalis diarrhea in a HIV-positive patient with Pneumocystis jiroveci pneumonia, as a possible symptom of IRIS.","authors":"Łukasz Pielok, Stanisław Królak, Monika Lisiecka, Joanna Swarcewicz, Arleta Kowala-Piaskowska","doi":"10.17420/ap71.550","DOIUrl":"https://doi.org/10.17420/ap71.550","url":null,"abstract":"<p><p>Human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS) still have a detrimental effect on public health. Lack of adequate therapy inevitably leads to the decrease in lymphocyte T CD4+ population and emergence of opportunistic infections (OIs) and AIDS-indicators. Pneumocystis jiroveci pneumonia (PjP) is recognized as one of the most common OIs in people living with HIV. Giardia intestinalis is a protozoan parasite, commonly reported throughout the world as the most important non-viral cause of human diarrhea. Immunocompromised patients are a high risk group for parasitic infections. Giardiosis usually is self-limiting, however it can cause severe dehydration and malnutrition, especially in immunocompromised individuals. In this work we described a case of 46-year old men, who stoped ART and expanded IRIS symptoms due to PjP and Giardia intestinalis infections. We concluded that parasitic stool examination in HIV/AIDS individuals should be performed to detect asymptomatic protozoa infections, which can lead to diarrhea during ARV treatment. Moreover, determination of the IRIS risk factors may have a detrimental effect on the prevention of severe complications in patients living with AIDS.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"95-98"},"PeriodicalIF":0.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimal artificial conditions for keeping and breeding medicinal leeches Hirudo verbana and Hirudo orientalis. 药用水蛭马蹄莲和东方水蛭饲养和繁殖的最佳人工条件。
Annals of parasitology Pub Date : 2025-09-07 DOI: 10.17420/ap71.549
Ruslan Aminov, Alina Aminova, Alexander Florov, Lyudmyla Makyeyeva
{"title":"Optimal artificial conditions for keeping and breeding medicinal leeches Hirudo verbana and Hirudo orientalis.","authors":"Ruslan Aminov, Alina Aminova, Alexander Florov, Lyudmyla Makyeyeva","doi":"10.17420/ap71.549","DOIUrl":"https://doi.org/10.17420/ap71.549","url":null,"abstract":"<p><p>The aim of the work is to obtain optimal artificial conditions for the maintenance and breeding of medicinal leeches of the species Hirudo verbana and Hirudo orientalis. 180 medicinal leeches were used in the study: 100 leeches of the H. verbana species and 80 H. orientalis leeches. Four groups of animals were formed: two control and two experimental. Control groups of medicinal leeches were kept using the standard jar method. Experiments according to the developed optimal scheme. As a result of the study, it was found that there were more juveniles obtained from the cocoon per 1 parent leech in the experimental group of medicinal leeches of the H. verbana and H. orientalis species, compared to the control group; appearance of defective cocoons. Mortality of parent leeches during breeding, mortality of juveniles before the first, after the first and sixth feeding decreases on average by more than 50% (P < 0.05) in the experimental group.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"79-83"},"PeriodicalIF":0.0,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145861714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Endoparasites influence on vocalization and mating success of Physalaemus cuvieri Fitzinger, 1826. 内寄生虫对cuvieri Physalaemus发声和交配成功的影响。
Annals of parasitology Pub Date : 2025-09-07 DOI: 10.17420/ap71.543
Heitor Tavares de Sousa Machado, Kassio Castro de Araújo, Cristiana Ferreira da Silva, Robson Waldemar Ávila
{"title":"Endoparasites influence on vocalization and mating success of Physalaemus cuvieri Fitzinger, 1826.","authors":"Heitor Tavares de Sousa Machado, Kassio Castro de Araújo, Cristiana Ferreira da Silva, Robson Waldemar Ávila","doi":"10.17420/ap71.543","DOIUrl":"https://doi.org/10.17420/ap71.543","url":null,"abstract":"<p><p>Anurans vocalize in different social contexts, in which the advertisement call is the most disseminated. Different endoparasites usually parasitize these animals, but how these endoparasite infections affect anuran vocalizations remains unclear. Therefore, we investigate how endoparasite infections influence the advertisement call and mating success of Physalaemus cuvieri. For that, we searched and recorded the advertisement call of this anuran at a Caatinga area, during the rainy season from March to April 2021 and February to April 2022, totaling 63 sampling days. After recording the advertisement call, we monitored their success in starting amplexus with females. In the lab, we necropsied all collected individuals to see if some endoparasites infected them. We found a significant effect of the parasite load only on call intervals-more parasitized individuals exhibited higher call intervals. In addition, we observed that the less-weight individuals tended to be more parasitized. Lastly, only the male snout-vent lengths affected the matting success in the studied population of Physalaemus cuvieri. The present study is an essential contribution to understanding how anuran health influences communication and sexual selection.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"71-77"},"PeriodicalIF":0.0,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145008076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A preliminary study on the therapeutic potential of pulsed electric fields (PEF) in hydatid cysts: ex vivo targeted detachment of the germinal layer in daughter cysts. 脉冲电场(PEF)治疗包虫病潜能的初步研究:体外靶向分离子包虫病的生发层。
Annals of parasitology Pub Date : 2025-07-15 DOI: 10.17420/ap71.546
Bahman Maleki, Zainab Shankaii, Abolfazl Salehi, Tahereh Mohammadzadeh
{"title":"A preliminary study on the therapeutic potential of pulsed electric fields (PEF) in hydatid cysts: ex vivo targeted detachment of the germinal layer in daughter cysts.","authors":"Bahman Maleki, Zainab Shankaii, Abolfazl Salehi, Tahereh Mohammadzadeh","doi":"10.17420/ap71.546","DOIUrl":"https://doi.org/10.17420/ap71.546","url":null,"abstract":"<p><p>Cystic echinococcosis (CE), a globally parasitic disease is primarily caused by the larval stage of Echinococcus granulosus. This zoonotic infection carries significant medical, veterinary, and economic implications. In human the disease occurs by the ingestion of parasite eggs and can create in any organ especially liver and lungs. Current therapeutic methods have some limitations. Therefore, effect of pulsed electric fields (PEF) as a non-invasive method was utilized on daughter cysts as an important part of hydatid cyst. Daughter cysts was extracted from sheep liver hydatid cyst, divided into three groups. The first group was exposed to PEF at intensities of 70V/cm, 150 V/cm and 1300V/cm. The second group was treated with albendazole (100 μg/ml). The third group, was exposed with different intensities of PEF (as above) following incubation of daughter cysts with albendazole (100 μg/ml). Structural changes in the daughter cysts were analyzed using a stereomicroscope. The laminated layer remained undamaged in all three groups. In the first group (PEF), some degree of opacity and detachment of germinal layer was observed especially in higher pulse intensity (1300 V/cm). Albendazole treatment (second group) induced significant opacity. In the combined PEF and albendazole (third group), although germinal layer detachment was occurred in addition to opacity but the level of detachment was not similar to those that observed in the first group. The destructive effect of PEF on the germinal layer of daughter cysts can be considered as a promising result in the treatment of CE.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"63-69"},"PeriodicalIF":0.0,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metazoan endoparasites of Myloplus nigrolineatus (Characiformes: Serrasalmidae) from upper Amazon river basin, Brazil. 巴西亚马孙河上游黑线米蛾后生内寄生虫(特征:米蛾科)。
Annals of parasitology Pub Date : 2025-07-13 DOI: 10.17420/ap71.544
Rafael Braga do Amaral, Guilherme Augustus de Araújo, Luciana Damacena-Silva, Thiago Lopes Rocha, Ricardo Massato Takemoto, Paulo De Marco Júnior
{"title":"Metazoan endoparasites of Myloplus nigrolineatus (Characiformes: Serrasalmidae) from upper Amazon river basin, Brazil.","authors":"Rafael Braga do Amaral, Guilherme Augustus de Araújo, Luciana Damacena-Silva, Thiago Lopes Rocha, Ricardo Massato Takemoto, Paulo De Marco Júnior","doi":"10.17420/ap71.544","DOIUrl":"https://doi.org/10.17420/ap71.544","url":null,"abstract":"<p><p>The success of Trematoda and Nematoda infection in fish involves a complexity of variables. The objective of this study was to report the parasitological descriptors (prevalence, mean abundance, and mean intensity) and community status of Myloplus nigrolineatus as well as to evaluate the relationship between abundance and richness of endoparasites with biometric parameters, sex, Kn the hosts, percentage cover native vegetation and water temperature. A total of 7,256 endoparasites were found: 861 digeneas and 6,395 specimens of nematodes were collected in the intestine from Myloplus nigrolineatus. One species of Digenea and five species of Nematoda were collected. The initial documentation of the prevalence (%) of endohelminth species in M. nigrolineatus revealed the following: Dadaytrema oxicephala (70%), Chabaudinema americanum (52%), Cucullanus pinnai pinnai (13%), Myleusnema bicornis (65%), Procamallanus (Spirocamallanus) inopinatus (9%) and Rondonia rondoni (35%). The mean intensity and mean abundance were 329.82 ± 416 and 315.48 ± 417, respectively. The trematode Dadaytrema oxycephala was considered a central and dominant species. The total abundance was explained by the variables total length, relative condition factor (Kn), percentage cover native vegetation and water temperature. Fish relative condition factor (Kn) and sex were not influenced by the parasite infection and did not impair the body condition of the hosts. The GLMM showed there is no relationship between abundance and richness of endoparasites with percentage cover native vegetation, while that every twenty centimeters more in the total length of the hosts, the abundance of endoparasites in the intestine increases, approximately, 2 specimens.</p>","PeriodicalId":7987,"journal":{"name":"Annals of parasitology","volume":"71 ","pages":"31-48"},"PeriodicalIF":0.0,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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