Article
Environmental Sciences
Loretta Guidi, Maria Balsamo, Eleonora Grassi, Federica Semprucci, M. Antonio Todaro
Summary: This study observed the frontal and caudal organs as well as spermatozoa in three Macrodasys species, comparing them with previous research. The findings revealed differences in the accessory reproductive organs and the presence of spermatozoa inside the caudal organ, suggesting a more plausible hypothesis about sperm transfer in Macrodasys.
Article
Plant Sciences
Wenjing Yao, Chuanzhe Li, Shuyan Lin, Jianping Wang, Tingting Fan, Wanqi Zhao
Summary: This study uses anatomical methods to explore the developmental reasons of the flowering process of Pleioblastus pygmaeus, a dwarf bamboo species. The research reveals that the development of stamen, pistil, and embryo in the plant occurs simultaneously in the same floret. This study provides important insights into the reproductive biology of bamboo plants and has fundamental significance in understanding the flowering mechanism of P. pygmaeus and promoting sustainable cultivation of bamboo plants.
HORTICULTURAL PLANT JOURNAL
(2023)
Article
Evolutionary Biology
Loretta Guidi, Maria Balsamo, Marco Ferraguti, M. Antonio Todaro
Summary: This study reports the presence of aflagellate spermatozoa in two species of the recently described genus Kryptodasys. The ultrastructure of these spermatozoa shows common features unique to the genus. The functional and phylogenetic significance of this aflagellate condition in the two studied taxa and other species is discussed in the context of the generally flagellate sperm in Gastrotricha.
JOURNAL OF ZOOLOGICAL SYSTEMATICS AND EVOLUTIONARY RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Elena Yu. Gorbacheva, Konstantin A. A. Toniyan, Yulia A. A. Biriukova, Nadezhda A. A. Lukicheva, Oleg I. I. Orlov, Valery V. V. Boyarintsev, Irina V. V. Ogneva
Summary: The impact of weightlessness on the female reproductive system is not well understood. This study examined the effects of a 5-day dry immersion on the reproductive system of female subjects. Results showed that after immersion, there was an increase in inhibin B and a decrease in luteinizing hormone and progesterone. The size of the uterus and the thickness of the endometrium did not change. However, the average diameters of the antral follicles and the dominant follicle were higher after immersion.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Fang-Hao Yang, Xiao-Lei Dong, Guo-Xiang Liu, Lei Teng, Lin Wang, Feng Zhu, Feng-Hua Xu, Yi-Fan Yang, Can Cao, Guang Chen, Bing Li
Summary: This study demonstrates that C-phycocyanin can protect GC-1 spg cells and the reproductive system of male mice from injury, and it has antioxidant and inhibitory effects on the necroptotic signaling pathway. Therefore, C-phycocyanin could serve as a promising reproductive system protective agent.
Article
Plant Sciences
Zhengchuan Liang, Tingting Liu, Xiaoyan Chen, Wenjuan Xu, Tingfa Dong, Qinsong Liu, Xiao Xu
Summary: This study investigated the differences in functional traits, growth relationships, and resource allocation of dove tree twigs among three latitudinal regions in China. The results showed that twigs in the high-latitude region were smaller and had decreased flower mass compared to the low- and middle-latitude regions. A different growth relationship between flower mass and stem or leaf mass was observed in the high-latitude region compared to the other regions. The allocation of resources to stems and leaves increased while the allocation to flowers decreased in the high-latitude region. These findings demonstrate that dove tree twigs can adapt to environmental changes across latitudes by adjusting their phenotypic traits and biomass allocation.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Walaa F. A. Emeish, Marwa M. Fawaz, Nermean M. Hussein, Zeinab Al-Amgad, Hanan H. Abd-ElHafeez, Catrin Sian Rutland, Karima A. Bakry
Summary: This research describes the histological alterations caused by Henneguya species in African sharptooth catfish, as well as molecular identification and phylogenetic analysis. The study found that 27.5% of the fish were infested by Henneguya species, with a higher prevalence in the gills. The parasitism of the gill and dendritic tissues resulted in histopathological characteristics.
MICROSCOPY AND MICROANALYSIS
(2023)
Article
Biology
Valentyna Zinchenko, Johannes Hugger, Virginie Uhlmann, Detlev Arendt, Anna Kreshuk, Louis K. Scheffer
Summary: Electron microscopy provides detailed view of cellular morphology, but lacks applicable pipelines for automatic extraction of comprehensive morphological descriptors. This study presents an unsupervised method to learn cellular morphology from 3D EM data, enabling the exploration of different biological questions in large EM volumes.
Article
Multidisciplinary Sciences
Zhipeng Liu, Xia Zhang, Libin Huang, Hailong Huo, Pei Wang, Weizhen Li, Hongmei Dai, Fuhua Yang, Guowen Fu, Guiying Zhao, Yu H. Sun, Jinlong Huo
Summary: This study provides a comprehensive overview of the RNA landscape within five glands in pigs, shedding light on reproductive biology and the impact of inbreeding on the pig transcriptome.
Article
Multidisciplinary Sciences
Mahabub Alam, Afrina Mustari, Mohammad Alam Miah, Khaled Mahmud Sujan, Emdadul Haque Chowdhury
Summary: This study investigated the effects of varying doses of conjugated estrogen on body weight, hormonal levels, and reproductive organ histology. The results indicated that higher doses of conjugated estrogen resulted in greater weight loss and impaired reproductive function.
Article
Virology
Julia Sehl-Ewert, Virginia Friedrichs, Tessa Carrau, Paul Deutschmann, Sandra Blome
Summary: African swine fever can be efficiently transmitted to sows through artificial insemination using semen from infected boars. The infection causes visible changes in the reproductive organs of boars, including hemorrhages, edema, and proliferations. Histopathological analysis shows vasculitis, perivasculitis, and degeneration of the testicular and epididymal tubules. The impact of these changes on the long-term persistence of the virus should be further studied.
Article
Entomology
Do Gyeung Byeun, Byoung-San Moon, Seungki Lee, Jung Kyu Choi
Summary: This study focused on isolating and freezing germ cells from superior brown mealworm. Various methods were used to observe the reproductive organs and cellular characteristics of the mealworms. The findings provide fundamental data for reproductive studies of other useful insects and fertility preservation of endangered insects.
Review
Chemistry, Multidisciplinary
Lihua Luo, Huanli Zhou, Sijie Wang, Mei Pang, Junlei Zhang, Yilong Hu, Jian You
Summary: Millions of women worldwide are affected by various female reproductive disorders, causing many troubles in their daily lives. Gynecological cancers, such as ovarian cancer and cervical cancer, pose a severe threat to women's lives. Chronic diseases-induced pain, like endometriosis and pelvic inflammatory disease, significantly harm women's physical and mental health. Despite recent advances, challenges such as disease personalization and difficulty in early cancer diagnosis still exist. Nanoparticle-based imaging tools and phototherapies offer minimally invasive detection and treatment for reproductive tract-associated pathologies, and ongoing clinical trials show promise in early detection and targeted drug delivery. However, the complexities of the female reproductive system pose challenges in the development of these nanoparticle applications.
Article
Agriculture, Dairy & Animal Science
Eva Axner, Eric Cederlund, Erik O. Agren, Anne-Marie Dalin
Summary: The Swedish wolf population is closely monitored and managed to maintain a sustainable population while minimizing conflicts. Reproduction is a key factor in estimating population size and potential. By evaluating reproductive organs from necropsied female wolves, including placental scars for previous pregnancy and litter size, valuable supplementary data can be obtained. The study found that female wolves typically start reproducing at 2 years old, with occasional earlier cyclicity, and all females above 4 years old had reproduced. Pathological findings were rare, indicating no significant reproductive health limitations for population growth.
ANIMAL REPRODUCTION SCIENCE
(2023)
Article
Microbiology
Hancheng Wang, Yiting Li, Wenhong Li, Liuti Cai, Jianyu Meng, Gen Xia, Junliang Yin, Xi Liu
Summary: This study reports the discovery of the pathogenic fungus Fusarium ipomoeae on tobacco, which can cause leaf spot and blight diseases. This has serious consequences for tobacco production and provides important information for future diagnosis and management.
Article
Oceanography
Christina Schmidt, Pedro Martinez Arbizu
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2015)
Article
Ecology
J. M. Alfaro-Lucas, F. Pradillon, D. Zeppilli, L. N. Michel, P. Martinez-Arbizu, H. Tanaka, M. Foviaux, J. Sarrazin
Article
Biodiversity Conservation
Inga Mohrbeck, Tammy Horton, Anna M. Jazdzewska, Pedro Martinez Arbizu
Summary: This study assessed species richness and genetic variation of deep-sea scavenging amphipods in the Clarion-Clipperton Zone using an integrative molecular and morphological approach. The results highlighted the importance of using molecular tools in conjunction with traditional morphological methods for modern biodiversity assessment studies.
MARINE BIODIVERSITY
(2021)
Article
Zoology
Anna M. Jazdzewska, Angelika Brandt, Pedro Martinez Arbizu, Annemiek Vink
Summary: Collections of the amphipod genus Oedicerina from the Pacific Ocean revealed four new species, each found in different deep-sea environments and showing genetic and morphological distinctions. The study also showed evidence of population connectivity across the Kuril-Kamchatka Trench for the new species. No species have been found on both sides of the Pacific so far.
ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
(2022)
Article
Zoology
Olga Demidow, Terue C. Kihara, Pedro Martinez Arbizu, Paul F. Clark
Summary: The Bythograeidae family of brachyuran crabs is unique in that all genera and species are endemic to hydrothermal vents. German researchers collected 6 Bythograeidae megalopae from hydrothermal vent fields during an expedition, identifying them as Austinograea rodriguezensis through molecular analysis. The megalopal stage of A. rodriguezensis shows similarities and differences with other bythograeid megalopae.
Article
Biochemistry & Molecular Biology
Eva Paulus, Saskia Brix, Annabelle Siebert, Pedro Martinez Arbizu, Sven Rossel, Janna Peters, Jorundur Svavarsson, Martin Schwentner
Summary: The study revealed genetic diversity in the marine isopod species Haploniscus bicuspis, with multiple lineages identified in the circum-Icelandic region. The northern lineages display a complex phylogeographic history, while the southern populations may represent two distinct species. Minimal differences in proteomic profiles suggest ongoing or recent speciation processes.
Article
Multidisciplinary Sciences
Katja Uhlenkott, Erik Simon-Lledo, Annemiek Vink, Pedro Martinez Arbizu
Summary: The eastern Clarion Clipperton Fracture Zone (CCZ) is a heterogeneous abyssal environment with low abundances of diverse megafauna communities. Potential mining of polymetallic nodules threatens these communities, calling for detailed spatial investigation. Based on the predicted probability of occurrence of different morphotypes, the study area was divided into three assemblages, with highest richness predicted at seamount sites and lowest richness in the western part of the study area. The presence of differentiated megafauna assemblages in prospective nodule fields highlights the importance of considering the geological and biological heterogeneity in monitoring and management schemes.
SCIENTIFIC REPORTS
(2022)
Article
Plant Sciences
Leon Hoffman, Katharina Kniesz, Pedro Martinez Arbizu, Terue C. Kihara
Summary: New species of Anatoma Woodward, 1859 have been discovered in the abyssal hydrothermal vent field habitats on the Indian Ocean's oceanic plate margins. Molecular sequence analyses have identified six species, four of which have been described as new based on their morphological characteristics. The study suggests that all six species are likely new to science and are specific to the Indian Ocean. The Central Indian Ridge is dominated by Anatoma declivis sp. nov., while Anatoma discapex sp. nov. is found near the Rodriguez Triple Junction. Anatoma laevapex sp. nov., Anatoma paucisculpta sp. nov., and an undescribed species are mainly found on the Southeast Indian Ridge.
EUROPEAN JOURNAL OF TAXONOMY
(2022)
Article
Biochemistry & Molecular Biology
Sven Rossel, Patricia Kaiser, Maya Bode-Dalby, Jasmin Renz, Silke Laakmann, Holger Auel, Wilhelm Hagen, Pedro Martinez Arbizu, Janna Peters
Summary: This study used proteomic fingerprinting by MALDI-TOF mass spectrometry to identify and differentiate different ontogenetic stages of Calanus species from the Arctic Fram Strait. The results showed that mass spectrometry data can be used for species identification and stage distinction. The complexity of mass spectra in later ontogenetic stages and the relative intensities of certain mass peaks were found to be the main drivers of stage distinction in these species.
MOLECULAR ECOLOGY RESOURCES
(2023)
Article
Biodiversity Conservation
Magdalini Christodoulou, Sammy De Grave, Annemiek Vink, Pedro Martinez Arbizu
Summary: This study comprehensively investigated deep-sea decapod crustaceans from the NE Pacific Ocean and the SE Pacific Ocean using an integrative taxonomic approach. Morphological identification and genetic analysis were conducted, providing valuable data for future metabarcoding and eDNA monitoring work. The study also expanded the geographical distributional ranges of known species.
MARINE BIODIVERSITY
(2022)
Article
Biodiversity Conservation
Sven Rossel, Katja Uhlenkott, Janna Peters, Annemiek Vink, Pedro Martinez Arbizu
Summary: This study successfully applied DNA barcoding and MALDI-TOF MS methods to investigate the diversity of meiobenthic copepods in the eastern CCZ. Comparisons of different species delimitation tools showed similar biodiversity values, but differences in species clusters were found, likely due to the high number of rare species represented by only one specimen.
MARINE BIODIVERSITY
(2022)
Article
Biodiversity Conservation
Ralf Thiel, Magdalini Christodoulou, John J. Pogonoski, Sharon A. Appleyard, Thilo Weddehage, Annemiek Vink, Katja Uhlenkott, Pedro Martinez Arbizu
Summary: Although Ipnops specimens are common in the Clarion-Clipperton Fracture Zone (CCZ), a reliable species identification has not been possible due to the lack of captured specimens. However, a recent study utilizing morphological analysis and DNA barcoding successfully identified a specimen as Ipnops meadi and provided a better understanding of its morphological characteristics. Furthermore, the study suggests the presence of a previously undescribed Ipnops species in Australian waters.
MARINE BIODIVERSITY
(2022)
Article
Marine & Freshwater Biology
Nancy F. Mercado-Salas, Eduardo Suarez-Morales, Sahar Khodami, Pedro Martinez Arbizu
Summary: A new species of the Acanthocyclops genus is described from freshwater bodies in Southeast Mexico. This species, Acanthocyclops fiersi n. sp., is the third one described from the Neotropics. Comparative morphology and molecular methods supported its distinction from other species in the A. vernalis-robustus species-complex. The study also highlights the regional diversity of Acanthocyclops and the need for further research in the Neotropics, and includes an identification key for Acanthocyclops species in Mexico.
Article
Zoology
Alberto Gonzalez-Casarrubios, Pedro Martinez Arbizu, Nuria Sanchez
Summary: A new species of Mixtophyes Sanchez et al. 2014 is described from the Clarion-Clipperton Fracture Zone (north-eastern Pacific Ocean). The new species is characterized by spinose processes on segments 1-11 in middorsal position and on segments 1-10 in midlateral position, paired paradorsal setae on segments 2, 4-6 and 8-9, unpaired setae on segments 3 and 7, and paired setae in paralateral and ventrolateral positions on segments 2-9. Furthermore, the morphological characteristics and taxonomic nomenclature of Neocentrophyidae and the genus Mixtophyes are discussed and updated, along with the emendation of the sexual characters of the genus.
Article
Marine & Freshwater Biology
Paulo Henrique Costa Corgosinho, Carlos Eduardo Falavigna da Rocha, Pedro Martinez Arbizu, Edinaldo Nelson dos Santos-Silva
Summary: The new genus Santaremicaris is proposed to accommodate a new species and a rediscovered species, both from the Amazonas River at Santarem, Brazil, showing clear autapomorphies that distinguish them from related genus Murunducaris. The males of both genera share similar conspicuous ornamentation and an enlarged intercoxal sclerite on the fifth leg.