Publications by authors named "M Mennesson"
A new species of the Aulopidae is described from the waters of southern Ecuador and northern Peru. Aulopus chirichignoae sp. nov.
View Article and Find Full Text PDFA new species of freshwater pipefish, Microphis arrakisae sp. nov., is described from the West Indonesian Islands (Java, Bali and Lombok).
View Article and Find Full Text PDFArticle Synopsis
- Syngnathidae is a family of fish that includes seahorses, seadragons, and pipefishes, with some species, particularly pipefishes, found in freshwater environments in the Indo-Pacific region.
- Recent studies indicated that certain freshwater pipefish species like Microphis brachyurus and Microphis retzii display significant genetic variations across their wide distributions, prompting research to explore their population structures using mitochondrial DNA.
- The findings revealed distinct genetic characteristics within these species, highlighting separate evolutionary lineages and underlining their vulnerability to human impacts, which is crucial for future conservation strategies.
Article Synopsis
- Scientists analyze otoliths, small ear-like structures in fish, to study their life history and migration patterns, which often contain growth and environmental signatures.
- Using synchrotron-based scanning X-ray fluorescence, researchers can create detailed maps of element distribution in these otoliths, revealing important migration and growth information that was previously unclear, especially in fragile species like the freshwater pipefish.
- A significant finding includes the confirmation that certain tropical pipefish are diadromous and the innovative use of sulfur signals allows for accurate age estimation and growth increment analysis, enhancing the understanding of fish life traits and conservation efforts.
Stressful events trigger a set of complex biological responses which follow a bell-shaped pattern. Low-stress conditions have been shown to elicit beneficial effects, notably on synaptic plasticity together with an increase in cognitive processes. In contrast, overly intense stress can have deleterious behavioral effects leading to several stress-related pathologies such as anxiety, depression, substance use, obsessive-compulsive and stressor- and trauma-related disorders (e.
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