A polyphenism in the nematode Pristionchus pacificus involves the development of different feeding structures in response to an environmental cue, providing a genetic model species for investigating ecologically relevant phenotypic plasticity.
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http://dx.doi.org/10.1016/j.cub.2010.07.009 | DOI Listing |
J Morphol
January 2025
Zoologische Staatssammlung München (ZSM-SNSB), Munich, Germany.
Booidean snakes are a diverse and widespread lineage with an intriguing evolutionary and biogeographic history. By means of cranial morphology and osteology, this study investigates the evolutionary convergence in the Neotropical genera Boa and Corallus on the one hand and the Malagasy clade comprising Acrantophis and Sanzinia on the other. We hypothesize that the mostly arboreal Corallus and Sanzinia present larger jaws and longer teeth to keep hold of the prey and resist gravity and torsional forces acting on their skull while hanging from branches, while terrestrial genera such as Acrantophis show thinner jaws with shorter teeth because they can rely on the full length of their coils to immobilize and constrict the prey together with a substrate that supports the whole of their body.
View Article and Find Full Text PDFBMC Plant Biol
December 2024
College of Life Science and Technology, Harbin Normal University, Harbin, China.
Background: Lavandula angustifolia Mill., a valuable aromatic plant, often encounters low temperature stress during its growth in Northeast China. Understanding the mechanisms behind its resistance to low temperatures is essential for enhancing this trait.
View Article and Find Full Text PDFBMC Ecol Evol
December 2024
Department of Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova University, 800 Lancaster Avenue, Villanova, PA, 19085, USA.
Lygodactylus geckos represent a well-documented radiation of miniaturized lizards with diverse life-history traits that are widely distributed in Africa, Madagascar, and South America. The group has diversified into numerous species with high levels of morphological similarity. The evolutionary processes underlying such diversification remain enigmatic, because species live in different ecological biomes, ecoregions and microhabitats, while suggesting strikingly high levels of homoplasy.
View Article and Find Full Text PDFSci Rep
December 2024
Institute of Botany State Key Laboratory of Systematic and Evolutionary Botany, Chinese Academy of Sciences, 100093, Beijing, China.
Phenological and morphological variation are widely viewed as a pivotal driver of ecological adaptation and speciation. Here, we investigate variation patterns of flowering phenology and morphological traits within and between O. rufipogon and O.
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December 2024
Laboratorio de Biotecnología y Estudios Ambientales, Departamento de Ciencias y Tecnología Vegetal, Escuela de Ciencias y Tecnologías, Universidad de Concepción, Campus Los Ángeles, 4440000, Concepción, Chile.
Colobanthus quitensis is known for enduring extreme conditions, such as high salinity in Antarctica, making it an excellent model for studying environmental stress. In plant families, variations in seed color heteromorphism have been linked to various germination under stress conditions. Preliminary laboratory observations indicated that dark brown seeds of C.
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