Results 81 to 90 of about 18,796 (232)
Sensitivity of Mediterranean amphipods and sea urchins to reference toxicants
Ciencias Marinas, 2002 Toxicity tests were performed in two amphipod species, Gammarus aequicauda and Microdeutopus gryllotalpa, and three sea urchin species, Arbacia lixula, Paracentrotus lividus and Sphaerechinus granularis.
A Cesar +3 more
doaj +1 more source
Noncanonical Nucleotides in the Genome Around the Maternal‐Zygotic Transition
Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.In this paper, Kazzazi et al. provide a comprehensive review of the dynamics of nonconventional nucleotides in the genome during early developmental stages, hypothesizing a potential role for these nucleotides in the activation of the zygotic genome. ABSTRACT From the very moment of fertilization and throughout development, the cells of animal embryos ...
Latifa Kazzazy +7 more
wiley +1 more source
Tool Use by Four Species of Indo-Pacific Sea Urchins
Journal of Marine Science and Engineering, 2019 We compared the covering behavior of four sea urchin species, Tripneustes gratilla, Pseudoboletia maculata, Toxopneustes pileolus, and Salmacis sphaeroides found in the waters of Malapascua Island, Cebu Province and Bolinao, Panagsinan Province ...
Glyn A. Barrett +5 more
doaj +1 more source
Laboratory on sea urchin fertilization [PDF]
Molecular Reproduction and Development, 2011 AbstractSince about 1880, the eggs and sperm of sea urchins have been used for the study of fertilization, the metabolic activation of development and gene regulatory mechanisms governing embryogenesis. Sea urchin gametes are a favorite material for observations of the process of fertilization in advanced high school, community college, and university ...
openaire +2 more sources
Calpain Proteases and the Evolving Signaling Network in Insect Embryonic Patterning
Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.Insect embryonic Dorsal‐Ventral (DV) patterning relies on the BMP and Toll pathways to different extents. Calcium‐dependent cystein proteases of the Calpain family also exert an important function to pattern the DV axis. In Drosophila, Calpain A cleaves the Cactus/IkappaB inhibitor and modifies Toll signals in ventral regions of the embryo. In Rhodnius
Alison Julio, Helena Araujo
wiley +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.This research established a new object detection model based on YOLOv11 to recognise benthic organisms, specifically sea cucumbers, by utilising high‐resolution photogrammetric‐based orthomosaics acquired along infralittoral Mediterranean Sea beds. The model demonstrated impressive performance metrics and, when combined with the Deepness plugin for the
Gian Mario Sangiovanni +9 more
wiley +1 more source
Biotropia: The Southeast Asian Journal of Tropical BiologyArticle Highlights - The highest absolute abundance of sea urchin Tripneustes gratilla was observed in August 2023 - In 2024, the low absolute abundance of Tripneustes gratilla and the decline of sea urchin species diversity in North Lombok ...
Victor David Nico Gultom
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PLoS ONE, 2015 In eastern Canada, the destruction of kelp beds by dense aggregations (fronts) of the omnivorous green sea urchin, Strongylocentrotus droebachiensis, is a key determinant of the structure and dynamics of shallow reef communities.
Desta L Frey, Patrick Gagnon
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Navigating Classical and Nonclassical Realms of Nucleation and Crystallization
Small, EarlyView.Classical nucleation and growth theories have long been foundational, yet recent nonclassical concepts have challenged and refined our understanding of solid‐state genesis. This paradigm shift introduced new, often ambiguous vocabulary. Here, we clarify key concepts, correct common misconceptions, and provide a terminological field guide across systems,
Stephan E. Wolf, Peter G. Vekilov
wiley +1 more source