Publications by authors named "M Castelin"
Based on molecular and conchological features, a new genus, Bouchetaria, is proposed for the Cypraeidae species Nesiocypraea aenigma Lorenz 2002. Molecular analysis of cox1 and 16S genes places Bouchetaria within a monophyletic group-composed of the genera Propustularia, Nesiocypraea, Ipsa, Perisserosa, Cryptocypraea, and Nucleolaria-appearing as the sister group to all other living Cypraeidae. This group corresponds to the Erosariinae (sensu Lorenz & Hubert, 1993).
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- Tropical coral reefs, covering only 0.1% of the Earth's surface, are home to immense marine biodiversity and provide essential services, but face threats from global issues like climate change and local challenges such as chemical pollution.
- This study systematically reviewed experiments on chemical toxicity to reef-building corals to create useful data for ecological risk assessment, determining toxicity thresholds and comparing them to regulatory safety levels for marine life.
- The research leveraged a comprehensive database of ecotoxicological studies to ensure rigorous evaluation of the impacts of pollutants on corals, assessing the quality of the studies and aiming to create actionable knowledge for ecosystem management.
AbstractThe calyptraeids and , both direct developers, are abundant in the shallow waters of the northeastern Pacific. They have long been considered as two allopatric species that live on different hosts and differ in body size. In this study, we rigorously test this historical hypothesis by assessing molecular taxonomy, museum records, new morphological and host observations, and population genetic structure along the northeast Pacific coast.
View Article and Find Full Text PDFBased on the specimens collected during three deep-sea cruises, and deposited at the Muséum National d'Histoire Naturelle (MNHN) in Paris, we analysed the diversity of benthic communities within the EEZ of French Polynesia. The literature and the MNHN database allowed us to inventory 471 species of invertebrates, among which 169 were newly described. We mainly found data for Mollusca, Crustacea, Brachiopoda and Crinoidea.
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- - The study focused on freshwater shrimp specimens from the Caridina nilotica complex collected in the South Western Indian Ocean, involving both genetic (16S mitochondrial analysis) and morphological comparisons.
- - Findings indicated that what was previously identified as various species of the C. nilotica complex is actually the valid species C. natalensis, first described in 1908.
- - The research also includes a re-description of C. natalensis and comparisons with similar species that are commonly confused with it, such as C. brachydactyla, C. brevidactyla, C. gracilipes, and C. longirostris.