Article
Biology
Valeria Gimenez, Paulo Cardoso, Carina Sa, Carla Patinha, Eduardo Ferreira da Silva, Etelvina Figueira, Adilia Pires
Summary: This study examines the impact of seasonality on element accumulation and oxidative status in Diopatra neapolitana worms. The researchers collected samples in different seasons and found that enzyme activities and energy-related parameters were higher in spring and summer, while oxidative damage was higher in winter. These variations were mainly attributed to high temperatures and element bioaccumulation. The study also highlights the importance of understanding the response of ecologically and economically significant species to environmental changes.
Article
Parasitology
Nguyen Ngoc Chinh, Nguyen Van Ha, Pham Ngoc Doanh, Yurakhno Violetta, Tomoyoshi Yoshinaga, Sho Shirakashi, Sascha L. Hallett, Christopher M. Whipps
Summary: A new myxozoan species, Ceratomyxa binhthuanensis n. sp., was discovered in the gall bladder of blacktip grouper in the East Sea of Vietnam. The species is characterized by elongate and slightly crescent-shaped mature myxospores, two smooth equal shell valves, and spherical polar capsules of equal size. Molecular analysis reveals that Ceratomyxa binhthuanensis n. sp. is distinct from other Ceratomyxa spp. available in GenBank. Phylogenetic analysis shows a close relationship between C. binhthuanensis n. sp. and three other Ceratomyxa species that infect fish hosts of the genus Epinephelus.
PARASITOLOGY RESEARCH
(2022)
Article
Immunology
Graca Casal, Themis J. Silva, Emerson C. Soares, Elsa Oliveira, Marta Santos, Sonia Rocha
Summary: The introduction of new fish species is crucial for the aquaculture industry to address the decline of natural fish stocks. This study focused on the myxozoan diversity infecting the sheepshead fish. A novel Henneguya sp. was identified in the gill lamellae of sheepshead fish in Brazil, and its morphological, histopathological, ultrastructural, molecular, and phylogenetic characteristics were described. This parasite can cause significant damage to the gill structure and affect the sustainable production of sheepshead fish.
MICROBIAL PATHOGENESIS
(2023)
Article
Immunology
Juliana M. A. Silva, Edson A. Adriano, Lisandro J. Vieira, Juliana Naldoni, Francisco G. A. Santos
Summary: The farming of Colossoma macropomum in Brazil has increased the need for research into the health of the fish. A study in Acre, Brazil revealed the presence of three novel species of the genus Myxobolus infecting C. macropomum in a breeding system, with high prevalence of infection among the fish specimens. The molecular and morphological analysis showed that these species are previously unknown, adding to the diversity of myxosporeans infecting C. macropomum.
MICROBIAL PATHOGENESIS
(2021)
Article
Environmental Sciences
Zied Mdaini, Khaoula Telahigue, Tarek Hajji, Imen Rabeh, M'hamed El Cafsi, Rejean Tremblay, Jean Pierre Gagne
Summary: Coastal lagoons are vulnerable ecosystems exposed to anthropogenic activities, with polychaetes playing a dominant role. This study found that certain polychaete species exhibited higher sensitivity to urban pollution, suggesting their potential use in environmental biomonitoring.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Ecology
Reka Borzak, Muhammad Hafiz Borkhanuddin, Gabor Cech, Kalman Molnar, Sascha L. Hallett, Csaba Szekely
Summary: Thelohanellus nikolskii is a myxozoan parasite commonly found on common carp, with infection appearing as cysts on the fins and scales. Research indicates that the infection occurs on the fins of young carp in summer and autumn, while older carp's scales are infected in spring.
INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE
(2021)
Article
Parasitology
Fabiana Raquel Ratzlaff, Fagner D'ambroso Fernandes, Vanessa Osmari, Daniele Silva, Jaine Soares de Paula Vasconcellos, Patricia Braunig, Fernanda Silveira Flores Vogel, Sonia de Avila Botton, Helton Fernandes dos Santos, Juliana Felipetto Cargnelutti, Eloiza Teles Caldart, Aline Campos, Jose Americo de Mello Filho, Joao Fabio Soares, Renata Fagundes-Moreira, Andre Alberto Witt, Susi Missel Pacheco, Luis Antonio Sangioni
Summary: This study detected the occurrence of Leishmania spp. infection in bats from various municipalities in southern Brazil. The results suggest that bats may play a role in the biological cycle of Leishmania spp. as hosts, reservoirs, and/or sources of infection.
PARASITOLOGY RESEARCH
(2022)
Article
Microbiology
Junrui Fu, Junhan Wang, Ximei Huang, Boyang Guan, Qili Feng, Huimin Deng
Summary: This study investigated the composition of gut microbiota in a lab-reared strain of Spodoptera frugiperda and its effects on reproduction. Results showed that the composition of gut microbiota varied during the life cycle of S. frugiperda, with eggs having higher bacterial diversity. The changes in gut microbiota also led to differences in metabolic functions and significantly impacted male reproduction.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Parasitology
Lamjed Mansour, Aouatef Thabet, Jameel Al-Tamimi, Saber Nahdi, Suliman Alomar, Abdel-Azeem S. Abdel-Baki
Summary: Two myxosporean species were found in the gallbladder of the European pilchard from the Southern shores of the Mediterranean Sea, belonging to the genera Ceratomyxa and Coccomyxa, described using morphological and molecular phylogenetic tools. The SSU rDNA sequences of these species were obtained and positioned in the phylogenetic tree, showing relationships with other myxozoan sequences.
ACTA PARASITOLOGICA
(2022)
Article
Entomology
Zhijun Zhou, Huimin Huang, Xuting Che
Summary: This study characterized the bacterial communities in the feces of the economically important Chinese singing insect, Gampsocleis gratiosa, using Illumina sequencing. The results showed that the developmental stages and sexes of G. gratiosa had no significant effect on the fecal bacterial community. The early-instar nymphs had higher species diversity.
Article
Microbiology
Salma Khaled, Nausicaa Gantois, Aisha Ayoubi, Gael Even, Manasi Sawant, Jinane El Houmayraa, Mathieu Nabot, Sadia Benamrouz-Vanneste, Magali Chabe, Gabriela Certad, Dima El Safadi, Fouad Dabboussi, Monzer Hamze, Eric Viscogliosi
Summary: The study showed a high prevalence rate of Blastocystis sp. among the Syrian population, with no significant association with gender, age, symptomatic status, and other factors, but a correlation with water, sanitation, and hygiene interventions. Among the subtypes, ST3 was the most common, suggesting anthropogenic transmission.
Article
Parasitology
Amira Elloumi, Luis F. Rangel, Maria J. Santos, Sihem Bahri
Summary: A new marine myxosporean, Myxidium tunisiensis, infecting the gallbladder of the rough skate Raja radula, was described. The infection was prevalent throughout the year with seasonal fluctuations. Morphological and molecular analysis confirmed it as a new member of the genus Myxidium.
PARASITOLOGY RESEARCH
(2023)
Article
Fisheries
Boglarka Sellyei, Kalman Molnar, Gabor Cech, Adam Varga, Csaba Szekely
Summary: Dermocystidiosis is a common skin infection in common carp in Hungary, usually presenting as small nodules. However, this study reports an unusual case where a large tumor-like nodule formed under the skin, containing spore-filled cysts. Histological sections revealed that the nodule had two layers, with a dense mass of cysts in the outer layer and a less dense meshwork of tubular cysts in the central part.
JOURNAL OF FISH DISEASES
(2022)
Article
Parasitology
Khouloud Bouderbala, Luis F. Rangel, Maria J. Santos, Sihem Bahri
Summary: Two new coelozoic myxosporean species, Ceratomyxa marginati n. sp. and C. aenei n. sp., were described infecting the gallbladder of the dusky grouper and the white grouper, respectively. Morphological characteristics and molecular analysis of the SSU rDNA were used to describe these two ceratomyxids. Phylogenetic analysis showed that these two new species are distinct from other Ceratomyxa species and they branch together with maximum support.
PARASITOLOGY RESEARCH
(2022)
Article
Food Science & Technology
O. Golden, L. F. Rangel, M. F. Santos, Andreia Juliana Rodrigues Caldeira
Summary: Anisakis parasitic nematodes are the cause of anisakiosis, a significant fish-borne disease. Humans get infected by consuming raw or undercooked fish contaminated with the parasite. Although there are few reports of anisakiosis in Portugal, evidence of Anisakis allergy suggests exposure in the population. The EU-FORA work programme in Portugal aims to gather information on risk perception, attitudes, and knowledge regarding contamination of fish with Anisakis spp. and to examine the risk of anisakiosis in the Portuguese population.
Article
Parasitology
Raul Iglesias, Luis Filipe Rangel, Fabio Fernandez-Vazquez, Maria Joao Santos, Jose M. Garcia-Estevez
Summary: The European anchovy is a major fishery resource for countries in the Mediterranean and Black Sea basins. A study found that 27.1% of Engraulis encrasicolus specimens from the North East Atlantic waters were infected with plasmodia belonging to the Kudoa genus. The infection did not result in flesh softening. Morphological and morphometrical comparisons with similar myxospores from another fish species support the creation of a new species, Kudoa encrasicolin. sp.
SYSTEMATIC PARASITOLOGY
(2022)
Article
Food Science & Technology
Olwen Golden, Ana Catarina Araujo, Andreia J. R. Caldeira, Maria J. Santos
Summary: Foodborne parasitic zoonoses from fish and shellfish products, such as Anisakiosis caused by nematodes from the Anisakis genus, pose health risks to consumers. The demand for raw or undercooked food due to globalization increases the population at risk. This study aims to assess the risk of Anisakiosis from the most commonly consumed raw or undercooked fish species in Portugal and identify the fish species used in raw fish dishes in Asian restaurants. The findings suggest that consumers who prepare raw or lightly processed fish dishes at home without knowledge of prevention methods are at the highest risk, and even lightly grilled wild salmon or sardines can contain viable Anisakis larvae.
Article
Multidisciplinary Sciences
Sonia Rocha, Luis Filipe Rangel, Graca Casal, Ricardo Severino, Florbela Soares, Pedro Rodrigues, Maria Joao Santos
Summary: Myxosporeans are parasitic organisms that mainly infect fish and pose a potential threat to the aquaculture industry. In this study, a survey on myxosporean infections in white seabream, a commercially valuable fish reared in Southern European fish farms, was conducted. Two coelozoic myxosporeans, Ceratomyxa sargus n. sp. and Zschokkella auratis, were identified infecting the gall bladder of the fish. The genetic analysis revealed that C. sargus n. sp. is a separate species from other Ceratomyxa spp. infecting sparid fish in Southern Europe, while Zschokkella auratis demonstrates host shift among sparids in the Southern Portuguese coast.
Article
Surgery
Erfan Ghanad, Sophie Staff, Christel Weiss, Mario Goncalves, Maria Joao Santos, Nuno Correia, Georgi Vassilev, Florian Herrle, Christoph Reissfelder, Henry Johannes Greten, Mirko Otto, Cui Yang
Summary: This study developed a method to identify acupuncture points based on pressure sensitivity and found that acupuncture treatment on gastrointestinal pressure points can effectively reduce postoperative pain, increase pain threshold, and cause changes in skin temperature.
Article
Parasitology
Luis F. Rangel, Maria J. Santos, Sonia Rocha
Summary: This article provides a synopsis of Henneguya species described between 2012 and 2022, including 57 species described in the past decade and one species missing from previous synopses, totaling 254 species formally described within this genus. Biological characters and myxospore morphometry are presented for each species record.
SYSTEMATIC PARASITOLOGY
(2023)
Article
Fisheries
Nadhirah Syafiqah Suhaimi, Graciela Colunga-Ramirez, Boglarka Sellyei, Gabor Cech, Kalman Molnar, Csaba Szekely
Summary: The study reports the occurrence of a highly pathogenic myxosporean parasite, M. lentisuturalis, in a new geographical location, Hungary. This species infects the musculature of both goldfish and gibel carp, causing severe destruction of muscle tissue.
JOURNAL OF FISH DISEASES
(2023)
Article
Parasitology
Luis F. Rangel, Amira Elloumi, Yann Quilichini, Maria J. Santos, Sihem Bahri
Summary: A new species of Chloromyxum, C. dasyatidisn. sp., was discovered in the gallbladder of the Mediterranean elasmobranch fish Dasyatis pastinaca (Linnaeus) from Tunisia. The species has unique characteristics, including the shape and size of its myxospores, as well as seasonal variation in infection prevalence.
SYSTEMATIC PARASITOLOGY
(2023)
Article
Ecology
Wan Muhammad Hazim Wan Sajiri, Csaba Szekely, Kalman Molnar, Kurt Buchmann, Boglarka Sellyei
Summary: The lifecycle of Thaparocleidus vistulensis, a parasite of European catfish, was studied through observation of infection dynamics, egg development, hatching rates, and survival rates at different life stages. The data obtained allows for predictions of parasite-host dynamics and may contribute to the control of gill-disease in cultured European catfish stocks.
INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE
(2023)
Article
Marine & Freshwater Biology
Khouloud Bouderbala, Luis F. Rangel, Maria J. Santos, Sihem Bahri
Summary: This study aims to identify infective Anisakis larvae in Epinephelus aeneus and Epinephelus marginatus using morphological and molecular characterization, and examine the histopathological alterations in infected fishes. It was found that Anisakis larvae mainly infected the stomach, intestine, and body cavity of the fish, leading to fibrosis, necrosis, and infiltration of mononuclear inflammatory cells in the infected tissues.
CAHIERS DE BIOLOGIE MARINE
(2022)
