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One-quarter of freshwater fauna threatened with extinction.
Nature
January 2025
Tamar Valley National Landscape, Gunnislake, UK.
Freshwater ecosystems are highly biodiverse and important for livelihoods and economic development, but are under substantial stress. To date, comprehensive global assessments of extinction risk have not included any speciose groups primarily living in freshwaters. Consequently, data from predominantly terrestrial tetrapods are used to guide environmental policy and conservation prioritization, whereas recent proposals for target setting in freshwaters use abiotic factors.
View Article and Find Full Text PDFNew Silurian aculiferan fossils reveal complex early history of Mollusca.
Nature
January 2025
Earth Collections, University Museum of Natural History, Oxford, UK.
Mollusca is the second most species-rich animal phylum, but the pathways of early molluscan evolution have long been controversial. Modern faunas retain only a fraction of the past forms in this hyperdiverse and long-lived group. Recent analyses have consistently recovered a fundamental split into two sister clades, Conchifera (including gastropods, bivalves and cephalopods) and Aculifera, comprising Polyplacophora ('chitons') and Aplacophora.
View Article and Find Full Text PDFIntegrative use of DNA barcode and morphology reveal high level of diversity in the ornamental fish on the lower Amazon basin.
PLoS One
January 2025
Undergraduate Course in Aquaculture Engineering, Federal University of Western Pará, Monte Alegre, Pará, Brazil.
The Amazon basin is the world's largest hydrographic basin, in terms of both its total area and its species diversity, with more than 2,700 species of fish. Despite this diversity, the data available on the fish fauna of the Amazon basin are still relatively scant and incomplete, in particular from the streams and floodplain lakes of the lower Amazon, which may contain a large proportion of the still undescribed species of the basin. Many of these species are expected to be of interest to the ornamental fish market.
View Article and Find Full Text PDFThe magnitude of legal wildlife trade and implications for species survival.
Proc Natl Acad Sci U S A
January 2025
School of Biological Sciences University of Hong Kong, Hong Kong, P.R. China.
The unsustainable use of wildlife is a primary driver of global biodiversity loss. No comprehensive global dataset exists on what species are in trade, their geographic origins, and trade's ultimate impacts, which limits our ability to sustainably manage trade. The United States is one of the world's largest importers of wildlife, with trade data compiled in the US Law Enforcement Management Information System (LEMIS).
View Article and Find Full Text PDFContemporary Survival Selection Fails to Explain Observed Patterns of Phenotypic Divergence Between Suburban and Forest Populations of the Cuban Endemic Lizard, .
Biology (Basel)
December 2024
Centre d'Écologie Fonctionnelle et Évolutive CEFE, Université de Montpellier, CNRS, EPHE, IRD, CEDEX 5, 34293 Montpellier, Hérault, France.
Although urbanization is a major threat to biodiversity, some native species have managed to persist in urban areas. Populations of such species often show phenotypic differences with their rural counterparts. A crucial question is whether such differences result from different selection regimes between habitats.
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