Article
Biology
Adelaide Sibeaux, Cecilia Karlsson, Cait Newport, Theresa Burt de Perera
Summary: This study explores whether goldfish, a species evolutionarily distant from mammals, can perform a task central to mammalian spatial mapping-distance estimation. The results demonstrate that goldfish can accurately estimate distance and use local optic flow to do so.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Mariacristina Filice, Rosa Mazza, Sandra Imbrogno, Olga Mileti, Noemi Baldino, Amilcare Barca, Gianmarco Del Vecchio, Tiziano Verri, Alfonsina Gattuso, Maria Carmela Cerra
Summary: This study demonstrates for the first time the presence of an ACE2/Alamandine axis in goldfish and shows that it plays a role in modulating myocardial contractility through the NOS/NO system.
Article
Biochemistry & Molecular Biology
Akihito Takeda, Mao Fujita, Kengo Funakoshi
Summary: The expression of serotonin and its receptors play an important role in tissue remodeling after spinal cord injury in goldfish. The receptors 5HT2A and 5HT2C are involved in neurogenesis and gliogenesis, contributing to remodeling the fibrous scar. The receptor 5HT1B is involved in remodeling the tubular structures and promoting axonal regeneration.
JOURNAL OF CHEMICAL NEUROANATOMY
(2023)
Article
Biology
Tetsuo Kon, Kentaro Fukuta, Zelin Chen, Koto Kon-Nanjo, Kota Suzuki, Masakazu Ishikawa, Hikari Tanaka, Shawn M. Burgess, Hideki Noguchi, Atsushi Toyoda, Yoshihiro Omori
Summary: This study provides insights into the early stages of retinal cell evolution in goldfish after whole-genome duplication by analyzing the transcriptome and open chromatin regions. Divergence in gene expression patterns and dosage selection were observed, indicating the impact of WGD on gene evolution in goldfish.
COMMUNICATIONS BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Thi-Lien Nguyen, Yun-Son Nam, Seok-Yong Lee, Choon-Gon Jang
Summary: Repeated morphine administration induces tolerance to its analgesic effects. The study found that this tolerance is associated with changes in the expression and binding sites of TRPV1 in the brain.
BIOMOLECULES & THERAPEUTICS
(2022)
Article
Multidisciplinary Sciences
Audun H. Rikardsen, David Righton, John Fredrik Strom, Eva B. Thorstad, Patrick Gargan, Timothy Sheehan, Finn Okland, Cedar M. Chittenden, Richard D. Hedger, Tor F. Naesje, Mark Renkawitz, Johannes Sturlaugsson, Pablo Caballero, Henrik Baktoft, Jan G. Davidsen, Elina Halttunen, Serena Wright, Bengt Finstad, Kim Aarestrup
Summary: The study found that the mechanisms driving range-wide reductions in Atlantic salmon marine survival are hindered by a lack of understanding of their oceanic ecology and distribution. The individual salmon migrated further and in different directions than previously reported, showing increased diving activity near oceanographic fronts, highlighting the importance of these regions as feeding areas. Differences in oceanic distribution among individuals and populations may contribute to variations in growth and survival due to environmental conditions.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Nathan J. Dawson, Valerie Lynch-Holm
Summary: The iridescent silvery fish exhibit wide broadband reflectance due to aperiodic photonic structures in their iridophores, allowing for advanced photonic characterization methods. The increase in effective ASE gain path length in skin tissue stained with RhB is attributed to high group velocities and light localization in the gain envelope. The effective ASE gain path length serves as a figure-of-merit to quantify aperiodic photonic structures and determine photon interactions in reflective tissue.
JOURNAL OF LUMINESCENCE
(2022)
Article
Fisheries
Almendra Benavides, Daniela Gutierrez, Nadia Epuyao, Brenda Modak, Monica Imarai, Beatriz Valenzuela
Summary: Alpinone, a flavonoid derived from the resinous exudate of Heliotropium huascoense, exhibits antiviral activity against ISAV in farmed Atlantic salmon. The study reveals that Alpinone can induce the expression of specific genes and signaling pathways to exert its antiviral effects.
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
(2022)
Article
Environmental Sciences
Wanghui Xu, Lulu Zhang, Jiayin Hou, Xiaohua Du, Liezhong Chen
Summary: This study investigated the absorption and distribution of the neonicotinoid insecticide IMI in goldfish tissues. The results showed significant differences in IMI and its metabolite concentrations among different tissues, providing new data for the assessment of IMI toxicity.
Article
Fisheries
Francisca Samsing, James W. Wynne, Valentina Valenzuela-Munoz, Diego Valenzuela-Miranda, Cristian Gallardo-Escarate, Pamela A. Alexandre
Summary: This study utilized transcriptome sequencing data to explore gene regulatory networks in Atlantic salmon infected with a virus. The results revealed a specific miRNA cluster that was strongly induced, potentially serving as a biomarker for early infection. Additionally, a downregulated selenium protein was identified, which may be associated with viral clearance and recovery to a stable state.
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
(2022)
Article
Multidisciplinary Sciences
Seiichi Yamamoto, Masao Yoshino, Kei Kamada, Ryuga Yajima, Akira Yoshikawa, Kohei Nakanishi, Jun Kataoka
Summary: Researchers developed an ultrahigh resolution, real time alpha-particle imaging system for observing the trajectories of alpha particles in a scintillator. The system is based on a magnifying unit, a cooled EM-CCD camera, and a 100-micrometer-thick Ce-doped GAGG scintillator plate. With this system, they were able to measure the trajectories of alpha particles in real time and observe the line shapes of the particles in the scintillator.
SCIENTIFIC REPORTS
(2023)
Article
Biochemistry & Molecular Biology
Akihito Takeda, Ami Kanemura, Kengo Funakoshi
Summary: This study investigated the role of matrix metalloproteinases (MMPs) in axonal regeneration following spinal cord injury in goldfish. MMP-9 and MMP-14 were found to assist in degrading the extracellular matrix and promoting axonal growth into fibrous scar tissue. Additionally, MMP-14 in glial cells and MMP-2 in mast cells may create a supportive environment for axonal regeneration, contributing to successful motor recovery.
JOURNAL OF CHEMICAL NEUROANATOMY
(2021)
Article
Fisheries
Vilde Arntzen Engdal, Alf Seljenes Dalum, Harald Kryvi, Michael Frisk, Hakon Torsvik, Kjetil Hodne, Harriet Romstad, Ida Beitnes Johansen
Summary: Farmed Atlantic salmon suffer from cardiac morphology abnormalities, which pose a threat to their health and robustness. However, studying the cause and consequences of these abnormalities is challenging due to the lack of standardized nomenclature, methods, and scoring systems. In this study, a nomenclature for the pyramidal teleost heart is developed, along with quantitative and qualitative methods to assess heart morphology. The qualitative method is found to be more effective in detecting abnormalities in deceased fish, highlighting its complementary nature to the quantitative method.
Article
Anatomy & Morphology
A. Gomez, B. Rodriguez-Exposito, F. M. Ocana, C. Salas, F. Rodriguez
Summary: There is a debate on the evolutionary origin of hippocampus's episodic memory function. A widely accepted hypothesis claims that the hippocampus first evolved for spatial navigation and later adapted to support episodic memory in mammals. On the other hand, an alternative hypothesis suggests that the hippocampus originally encoded both spatial and temporal dimensions of relational memories. A study on teleost fish's pallium, a region analogous to the hippocampus, indicates that impairment of the pallium severely affects trace conditioning but spares delay conditioning. This challenges the idea that navigation preceded relational memory and suggests that the hippocampus's relational memory function could be a primitive feature.
BRAIN STRUCTURE & FUNCTION
(2022)
Article
Physiology
Emily J. Gallagher, Till S. Harter, Colin J. Brauner
Summary: The study found that both pink salmon and rainbow trout larvae actively accumulate Na+, but rainbow trout larvae have higher whole-body Na+ content. Rainbow trout larvae compensate for a large increase in Na+ efflux rate by greatly increasing Na+ uptake rate, while pink salmon maintain tight control over Na+ efflux rate with a smaller increase in Na+ uptake rate.
JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY
(2021)