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We report the first record of the pallenopsid pycnogonid species (Schimkewitsch, 1893) from the northwestern Pacific. Based on one male specimen collected from 1987-2007 m depth off the southeastern coast of Hokkaido, Japan, we redescribe the species and present its cytochrome oxidase subunit I (COI) sequence for use in future DNA barcoding. We found a cystidean-stage crinoid on the leg-1 femur of the sea spider, representing the first record of a cystidean found on a sea spider. BLAST searches for COI and 28S sequences revealed that the crinoid was (Clark, 1907).
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http://dx.doi.org/10.2108/zs250004 | DOI Listing |
Mar Pollut Bull
September 2025
Marine Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
Boat noise has been shown to distract and cause harm to many marine organisms. Most of the study effort has focused on fish & marine mammals, even though invertebrates represent over 92 % of all marine life. The few studies conducted on invertebrates have demonstrated clear negative effects of anthropogenic noise pollution.
View Article and Find Full Text PDFCurr Pharm Des
August 2025
Venom and Biotherapeutics Molecules Laboratory, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran.
Despite the availability of current peripheral pain medications, patients continue to experience acute pain and often need more potent analgesic options. As a result, the discovery of novel molecules is of significant importance. In recent years, the functional properties of peptides have opened new possibilities for pain treatment.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
August 2025
Max Planck Institute for Marine Microbiology, Bremen 28359, Germany.
Zool Res
July 2025
College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241003, China.
The ancient Neo-Tethyan region underwent profound tectonic transformations, including the orogenesis of the Xizang Plateau and the westward retreat and ultimate closure of the Neo-Tethyan Ocean. These events significantly influenced the diversification and biogeography of aquatic animals. However, the impact of these large-scale sea-land shifts on the long-range evolutionary history of terrestrial fauna remains unclear.
View Article and Find Full Text PDFCurr Biol
August 2025
Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London SE59RT, UK. Electronic address:
Fossils from the lower Cambrian provide crucial insights into the diversification of arthropod lineages: Mandibulata, represented by centipedes, insects, and crustaceans; Chelicerata, represented by sea spiders, horseshoe crabs, and arachnids-the last including spiders, scorpions, and ticks. Two mid-Cambrian genera claimed as stem chelicerates are Mollisonia and Sanctacaris, defined by a carapaced prosoma equipped with clustered limbs, followed by a segmented trunk opisthosoma equipped with appendages for swimming and respiration. Until now, the phyletic status of Mollisoniidae and Sanctacarididae has been that of a basal chelicerate, stemward of Leanchoiliidae, whose neuromorphology resembles that of extant Merostomata (horseshoe crabs).
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