Article
Environmental Sciences
Mingzhen Ma, Yuqing Li, Honggang Ma, Khaled A. S. Al-Rasheid, Alan Warren, Yurui Wang, Ying Yan
Summary: The morphology of four trachelocercid ciliates, including a new genus and a new combination, was studied in this research. The reclassification of one species to a different genus was proposed based on the investigation of oral structures. Additionally, phylogenetic analyses were conducted using SSU rDNA sequences.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Marine & Freshwater Biology
Afiqah Hamilton Hanifah, Sing Tung Teng, Ing Kuo Law, Nursyahida Abdullah, Sheryl Uncha Andrew Chiba, Wai Mun Lum, Urban Tillmann, Po Teen Lim, Chui Pin Leaw
Summary: Thirty-four strains of Heterocapsa were examined from Malaysian waters, and six species, including three new species, were described. The species were differentiated by morphological characteristics and supported by molecular data. Additionally, a species of Heterocapsa was found to be toxic to Artemia nauplii. This study provides the first documentation of the diversity and cytotoxic potency of Heterocapsa species in Malaysian waters.
Article
Microbiology
Rong Zhu, Qi Zhang, Lan Tang, Yan Zhao, Jingbao Li, Fengchao Li
Summary: This study presents for the first time the live morphology, ontogenesis, and molecular information of a Chinese population of Bakuella (Bakuella) marina, confirming the presence of colorless cortical granules. The study also reveals that the family Bakuellidae, genus Bakuella, and subgenus B. (Bakuella) are nonmonophyletic groups, highlighting the need for more molecular and morphogenetic information on Bakuellids and related species for a reasonable classification system.
FRONTIERS IN MICROBIOLOGY
(2022)
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
Plant Sciences
Lam Nguyen-Ngoc, Jacob Larsen, Hai Doan-Nhu, Xuan-Vy Nguyen, Nicolas Chomerat, Nina Lundholm, Luom Phan-Tan, Ha Viet Dao, Ngoc-Lan Nguyen, Huy-Hoang Nguyen, Thuoc Van Chu
Summary: Viet Nam has a diverse coastline and islands that provide habitats for harmful algal species, including ciguatera toxin-producing species of Gambierdiscus, which pose threats to public health. This study identifies five Gambierdiscus species from Vietnamese waters, including a new species, using morphological and molecular analyses. Additionally, it suggests the inclusion of certain strains from Hainan Island in China into the new species.
JOURNAL OF PHYCOLOGY
(2023)
Article
Plant Sciences
Lumi Haraguchi, Ojvind Moestrup, Hans Henrik Jakobsen, Nina Lundholm
Summary: Identification of planktonic flagellates is challenging, and this study investigated the changes in phytoplankton community composition over a year in Roskilde Fjord, Denmark. The study found that cryptophytes, euglenophytes, and green algae were important contributors to the community, while diatoms played a minor role. Furthermore, new species were identified, including one recorded for the first time in European waters.
Article
Microbiology
Chen Shao, Jing Lyu, Tongxuan Li, Jingyi Wang, Chunyu Lian
Summary: The morphology and morphogenesis of a new saline soil hypotrichous ciliate, Urosoma quadrinucleatum n. sp., collected from northwestern China, were studied using live observations and protargol stained specimens. The new species is characterized by its elongate-elliptical body shape with rounded ends, four macronuclear nodules, presence of cortical granules, paroral located in front of endoral, and usually 16 frontal-ventral-transverse cirri. The morphogenetic characteristics and genetic differences support the validity of U. quadrinucleatum n. sp. as a novel species in the Urosoma genus.
EUROPEAN JOURNAL OF PROTISTOLOGY
(2023)
Article
Zoology
Timur Yu Magarlamov, Alexei Chernyshev
Summary: Analyses of molecular data have revealed the phylogenetic relations between classes and orders of the phylum Nemertea, but the lack of morphological synapomorphies remains a problem. A study on the sensory cells of the proboscis epithelium in nemertean species identified three types of sensory cells and revealed specific features that may serve as synapomorphies in certain taxa.
ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
(2022)
Article
Parasitology
Lamjed Mansour, Heba M. Abdel-Haleem, Marwa Atwa, Ahmed B. Darwish, Saleh Al-Quraishy, Abdel-Azeem S. Abdel-Baki
Summary: A new species of myxosporean, Myxobolus allami sp. n., was identified from the intestinal wall of silvery black porgy Sparidentex hasta off the Saudi Arabian coast. The study described the morphology and phylogenetic placement of this new species.
FOLIA PARASITOLOGICA
(2021)
Article
Paleontology
Pieter R. Gurdebeke, Kenneth Neil Mertens, Lubomir Rajter, Pjotr Meyvisch, Eric Potvin, Eun Jin Yang, Coralie Andre, Vera Pospelova, Stephen Louwye
Summary: The acritarch genus Radiosperma has been studied since the late 19th century, with suggested biological affinities ranging from invertebrate eggs to tintinnids. This study improves the genus description and redescribes its two species. It also identifies a ciliate cyst related to Askenasia and discusses the distribution, ecology, and chemical composition of both species. Additionally, this study includes new sequences for flask shaped ciliate cysts and reviews the occurrence of fossilizable cysts in the ciliophoran clade.
MARINE MICROPALEONTOLOGY
(2023)
Article
Chemistry, Medicinal
Sung Min An, Kichul Cho, Eun Song Kim, Hyunji Ki, Grace Choi, Nam Seon Kang, Cecilia Faraloni, Eleftherios Touloupakis
Summary: In this study, an indigenous marine diatom Odontella aurita OAOSH22 was successfully isolated from the east coast of Korea, and comprehensive analysis was conducted on its morphological, molecular, and biochemical characteristics. The isolate was confirmed to contain significant amounts of fucoxanthin, a powerful antioxidant substance, and eicosapentaenoic acid (EPA), which is a nutritionally essential polyunsaturated fatty acid, demonstrating its potential as a valuable source of bioactive compounds for various bio-industrial applications.
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
Oceanography
Tingting Ye, Xuetong Zhao, Yong Chi, Bohan Zheng, Hui Zhang, Jie Huang, Alan Warren, Xiangrui Chen
Summary: Ciliates of the heterotrich family Folliculinidae have transparent lorica, conspicuous peristomial lobes, and dimorphic life cycle. Phylogenetic analysis based on SSU rDNA sequences showed conflicting relationships between genera with and without a closure device on their lorica.
JOURNAL OF OCEAN UNIVERSITY OF CHINA
(2021)
Article
Parasitology
Rodney Kozlowiski de Azevedo, Debora Caroline Negrelli, Cristiano Pinto de Oliveira, Vanessa Doro Abdallah, Juliana Pereira Sarmento Camara, Edilson Rodrigues Matos, Diego Henrique Mirandola Dias Vieira
Summary: This study described a new species of Henneguya parasite found in the gills of Eugerres brasilianus, providing detailed morphological and molecular data. The species was shown to be closely related to another Henneguya species that parasitizes marine fish of the order Perciformes. This is the first report of a Henneguya species parasitizing Eugerres brasilianus.
PARASITOLOGY INTERNATIONAL
(2021)
Article
Plant Sciences
Nadine Borchhardt, Nicolas Chomerat, Gwenael Bilien, Frederic Zentz, Lesley Rhodes, Shauna A. Murray, Mona Hoppenrath
Summary: The research described a new species, Bindiferia, and its relationship with known Amphidinium genus, demonstrating its morphological and molecular features. This new species shows distinct characteristics in cell structure and molecular phylogeny compared to Amphidinium genus.