Article
Marine & Freshwater Biology
Greg W. Rouse, Shana K. Goffredi
Summary: Jaws of a common thresher shark placed at a depth of 1000 meters in Monterey California disintegrated over 8 months, leaving behind fragments of tessellated cartilage and teeth. Two species of Osedax, O. packardorum and O. talkovici, were found to have bored into the teeth roots and were utilizing the dentin pulp as a food source. This is the first evidence of Osedax exploiting a food source other than bone, raising questions about its original food source.
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
(2023)
Article
Biodiversity Conservation
Gabriella H. Berman, Shannon B. Johnson, Charlotte A. Seid, Robert C. Vrijenhoek, Greg W. Rouse
Summary: This study reports expanded ranges for five species and provides additional DNA sequences for two species. Haplotype networks and gene flow analysis reveal high connectivity among individuals of some species, while low gene flow is observed in others. This study greatly expands the ranges and provides insights into the phylogeography of these nine species.
BIODIVERSITY DATA JOURNAL
(2023)
Article
Anatomy & Morphology
Tito Aureliano, Aline M. M. Ghilardi, Rodrigo T. Mueller, Leonardo Kerber, Marcelo A. A. Fernandes, Fresia Ricardi-Branco, Mathew J. J. Wedel
Summary: One of the most remarkable features in sauropod dinosaurs is their pneumatized skeletons with an air sac system. This study presents the oldest evidence of an invasive air sac system in a dinosaur, the unaysaurid sauropodomorph Macrocollum itaquii from the Late Triassic. The study also describes a new type of pneumatic tissue and challenges the previous hypothesis on the evolution of skeletal pneumatization.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2023)
Review
Cardiac & Cardiovascular Systems
Ugur Nadir Karakulak, Elifcan Aladag, Ibrahim Celalettin Haznedaroglu
Summary: This study reviews the relationship between local bone marrow and local cardiac RAS and their impacts on atherosclerosis.
ACTA CARDIOLOGICA SINICA
(2022)
Review
Cell Biology
Kshitij Tandon, Marisa M. Pasella, Cintia Iha, Francesco Ricci, Juntong Hu, Charles J. O'Kelly, Monica Medina, Michael Kuhl, Heroen Verbruggen
Summary: Ostreobium is a siphonous green alga that burrows into calcium carbonate substrates and forms green bands on coral skeletons. It plays a major role in carbonate reef bioerosion and contributes to the coral's nutritional needs. This review summarizes knowledge on Ostreobium's biology, including its morphology, biodiversity, photosynthesis, bioerosion mechanisms, and its role in the coral holobiont.
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
(2023)
Article
Evolutionary Biology
Paula C. Rodriguez-Flores, Charlotte A. Seid, Greg W. Rouse, Gonzalo Giribet
Summary: Munidopsid squat lobsters are abundant decapods in the East Pacific and new species, as well as new distribution records, have been described. Phylogenetic analysis revealed the nesting of Janetogalathea californiensis within Munidopsidae and the reassessment of Phylladiorhynchus and Coralliogalathea's taxonomy. The study also suggests a wider geographic range for abyssal species than previously thought.
INVERTEBRATE SYSTEMATICS
(2023)
Article
Marine & Freshwater Biology
Benni Winding Hansen, Per Dolmer, Bent Vismann
Summary: This research provides an overview of the invasion history and current distribution of the Pacific oyster Magallana gigas in European coastal waters. It discusses the management and measures taken to address the invasion, including restoration of invaded ecosystems. The research also proposes various mitigation strategies and evaluates their effectiveness.
JOURNAL OF SEA RESEARCH
(2023)
Article
Biology
Josefin Stiller, Nerida G. G. Wilson, Greg W. W. Rouse
Summary: The common seadragon is a single species with strong geographic structure and genetic diversity. The eastern and western populations of seadragons have low genetic diversity, which is concerning given the fast climate change in these areas. These findings provide important insights into the historical determinants of species diversity in the Great Southern Reef.
Article
Microbiology
Francesco Ricci, Kshitij Tandon, Maria Mosshammer, Ellie H. -J. Cho, Linda L. Blackall, Michael Kuhl, Heroen Verbruggen
Summary: In this study, the researchers used chemical imaging and microbiome characterization to investigate the impact of physicochemical gradients on the coral skeleton microbiome. They found that the microbial community in the coral skeleton was influenced by the physicochemical environment, and the microbiome composition was linked to the abiotic conditions.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Plant Sciences
Kasper Elgetti Brodersen, Michael Kuhl
Summary: In many terrestrial seeds, photosynthetic activity provides oxygen to the developing plant embryo. However, it is unclear whether seagrass seeds have similar photosynthetic capacity to alleviate intra-seed hypoxic stress. This study used various techniques to determine the oxygen microenvironment and photosynthetic activity in developing seeds and seedlings of seagrass. The findings showed that sheath-covered seeds had high oxygen concentrations in the photosynthetic active seed sheath and low oxygen concentrations at the position of the embryo. Photosynthesis in the seed sheath increased oxygen availability in central parts of the seed, enabling enhanced respiratory energy generation for biosynthetic activity.
Article
Evolutionary Biology
Lenke Toedter, Katrine Worsaae, Andreas Schmidt-Rhaesa
Summary: While most cnidarians are macrofaunal, there are also some microscopic lineages that inhabit marine sediments. This study aims to revise and identify species of the meiofaunal genus Halammohydra using both morphological and molecular methods. The researchers were able to identify four previously described species and describe four new species. The study highlights the importance of molecular sequencing for the taxonomy and species identification of Halammohydra.
ORGANISMS DIVERSITY & EVOLUTION
(2023)
Article
Biotechnology & Applied Microbiology
Victor Fernandez-Juarez, Soren Hallstrom, Cesar O. Pacherres, Jiaqi Wang, Guillem Coll-Garcia, Michael Kuhl, Lasse Riemann
Summary: This study examined the factors that regulate nitrogen fixation in an anoxygenic phototrophic bacterium and found that light and anoxia stimulated nitrogen fixation. The study also revealed the importance of biofilm formation for nitrogen fixation under oxic conditions. These findings highlight the physiological adaptations and the role of light in marine non-cyanobacterial diazotrophs.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Microbiology
Bruno Jesus, Thierry Jauffrais, Erik Trampe, Vona Meleder, Lourenco Ribeiro, Joan M. Bernhard, Emmanuelle Geslin, Michael Kuhl
Summary: Intertidal microphytobenthic (MPB) biofilms play a key role in coastal primary production through the movement and vertical migration of diatoms exhibiting photo-regulation. This study compared the photo-regulation features and non-photochemical quenching (NPQ) responses of four epipelic diatom species from a natural MPB biofilm. The results showed species-specific photo-regulation and a wide range of NPQ, suggesting the coexistence of epipelic species in compacted light niches. Additionally, the study revealed that diatom cell orientation within MPB can be modulated by light, highlighting the importance of considering species-specific responses and understanding cell orientation and photo-behaviour in MPB research.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Evolutionary Biology
Emily L. McLaughlin, Nerida G. Wilson, Greg W. Rouse
Summary: An increasing number of Antarctic invertebrate taxa have been found to belong to hidden or pseudo-hidden species through DNA-based assessments. This study focuses on the comatulid crinoid echinoderms known as Promachocrinus kerguelensis, which were previously regarded as a single species distributed throughout the Antarctic region. By analyzing a larger number of samples and sequencing mitochondrial COI genes, as well as additional genes for selected specimens, this research reveals the existence of multiple species within Promachocrinus. Some of these species can be distinguished based on morphological characteristics, but others require DNA data for reliable identification. The results highlight the importance of extensive sampling to fully understand the biodiversity of the Antarctic and Southern Ocean ecosystem.
INVERTEBRATE SYSTEMATICS
(2023)
Article
Biochemistry & Molecular Biology
Brett C. Gonzalez, Vanessa L. Gonzalez, Alejandro Martinez, Katrine Worsaae, Karen J. Osborn
Summary: Polynoidae is a highly diverse group of Aphroditiformia, showing remarkable success in colonizing various habitats. Previous studies on their evolutionary relationships have been limited by low genomic sampling. This study conducted the first phylogenomic analyses based on 12 transcriptomes from different habitats, revealing the presence of three clades: Polynoinae, Macellicephalinae, and Lepidonotopodinae. The results provide valuable insights into the relationships between these clades, as well as the origin of cave and pelagic lineages.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2023)
Article
Biology
Niclas Heidelberg Lyndby, Swathi Murthy, Sandrine Bessette, Sofie Lindegaard Jakobsen, Anders Meibom, Michael Kuhl
Summary: The study used optical coherence tomography (OCT) to investigate the morphology and tissue optical properties of Cassiopea jellyfish. The results showed that white granules in Cassiopea enhanced the local light-availability for symbionts, leading to higher carbon fixation compared to tissue without these granules.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Correction
Multidisciplinary Sciences
Rachel Alderdice, Gabriela Perna, Anny Cardenas, Benjamin C. C. Hume, Martin Wolf, Michael Kuhl, Mathieu Pernice, David J. Suggett, Christian R. Voolstra
SCIENTIFIC REPORTS
(2023)
Review
Cell Biology
Kshitij Tandon, Marisa M. Pasella, Cintia Iha, Francesco Ricci, Juntong Hu, Charles J. O'Kelly, Monica Medina, Michael Kuehl, Heroen Verbruggen
Summary: Ostreobium is a green alga that lives in calcium carbonate substrates and can survive in low light and low oxygen conditions. It is a major contributor to the erosion of coral reefs and plays a role in the nutrition of corals. Understanding the biology of Ostreobium and its role in coral reefs is important for the study and conservation of these ecosystems.
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
(2023)
Article
Marine & Freshwater Biology
Greg W. Rouse, Shana K. Goffredi
Summary: Jaws of a common thresher shark placed at a depth of 1000 meters in Monterey California disintegrated over 8 months, leaving behind fragments of tessellated cartilage and teeth. Two species of Osedax, O. packardorum and O. talkovici, were found to have bored into the teeth roots and were utilizing the dentin pulp as a food source. This is the first evidence of Osedax exploiting a food source other than bone, raising questions about its original food source.
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
(2023)