Results 41 to 50 of about 4,987 (245)

Testing the efficiency of passive acoustic monitoring and active monitoring in anuran community in lotic environments in Itinguçu State Park, Peruíbe-SP [PDF]

Anais da Academia Brasileira de Ciências
The following work presents the first study applying the passive acoustic monitoring of anurans at lotic environments for a long time. This study aims to test the efficiency of the passive acoustic monitoring method and active monitoring in detecting ...
ISABEL G. VELASCO, IVAN NUNES
doaj   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Feeding Mechanisms in Anuran Tadpoles [PDF]

Nature, 1950
I CAN confirm that the method of mucous cord feeding referred to by Dodd1 plays a part in the natural lives of tadpoles of Rana temporaria, Bufo bufo and Bombina variegata living under natural or semi-natural conditions. It is, however, remarkable that among the many tadpoles which have been examined, definite mucous cords have been seen in only a few.
openaire   +2 more sources

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

Advanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu, Chunlong Wang, Xiaohang Sun, Hongwei Guo, Jiayao Ma, Yan Chen   +5 more
wiley   +1 more source

Thermal Plasticity is Regulated by a Key MicroRNA During Range Expansion of an Invasive Fruit Fly

Advanced Science, EarlyView.
Populations at the invasion front of Bactrocera dorsalis adapt through reduced phenotypic and gene expression plasticity, a phenomenon likely to be driven by genetic assimilation. We identify a key miRNA‐mediated regulatory axis, in which miR‐276b post‐transcriptionally represses thw, a conserved chitin‐binding gene critical to the cold‐tolerance ...
Yan Zhao, Juntao Hu, Juan Du, Shaokun Guo, Youming Hou, Zhihong Li   +5 more
wiley   +1 more source

Predation Risk Experienced by Tadpoles Shapes Personalities Before but Not After Metamorphosis

Ecology and Evolution
Consistent inter‐individual differences in behaviour, that is, personalities, can emerge as a result of inter‐individual differences in ontogenetic experience, and predation risk is a potent one.
Barbara Płaskonka, Anna Zaborowska, Andrzej Mikulski, Barbara Pietrzak   +3 more
doaj   +1 more source

Engineered Living Systems With Self‐Organizing Neural Networks: From Anatomy to Behavior and Gene Expression

Advanced Science, EarlyView.
Ectodermal tissue excised from Xenopus embryos self‐organizes into a three‐dimensional mucociliary organoid. Here, we generate a neural variant, termed neurobot, by implanting neural precursor cells. Neurobots develop mature neurons, adopt distinct morphologies, exhibit more complex motility, and respond differentially to neuroactive compounds. Imaging
Haleh Fotowat, Laurie O'Neill, Léo Pio‐Lopez, Megan M. Sperry, Patrick Erickson, Tiffany Lin, Michael Levin   +6 more
wiley   +1 more source

Frog Skin Innate Immune Defences: Sensing and Surviving Pathogens

Frontiers in Immunology, 2019
Amphibian skin is a mucosal surface in direct and continuous contact with a microbially diverse and laden aquatic and/or terrestrial environment. As such, frog skin is an important innate immune organ and first line of defence against pathogens in the ...
Joseph F. A. Varga, Maxwell P. Bui-Marinos, Barbara A. Katzenback   +2 more
doaj   +1 more source

Does chronic exposure to ammonium during the pre-metamorphic stages promote hindlimb abnormality in anuran metamorphs? A comparison between natural-habitat and agrosystem frogs

Acta Herpetologica, 2020
Despite their detrimental effects on locomotion, prevalence of hindlimb abnormalities is increasing in anuran populations worldwide. Among others, agrochemical pollution during the larval stage is a potential cause. However, populations exposed to such a
Sonia Zambrano-Fernández, Francisco Javier Zamora-Camacho, Pedro Aragón   +2 more
doaj   +1 more source

Islet Amyloid Polypeptide Modelled to Simulate Diabetes Co‐Oligomerized with β‐Amyloid 1‐42 Reproducing the Pathological Cascade of Alzheimer's Disease in Human Cerebral Organoids

Advanced Science, EarlyView.
Human islet amyloid polypeptide (hIAPP) was used to mimic T2DM, and Aβ42‐hIAPP co‐oligomers were delivered into the human mature cerebral organoids (COs), which reproduce typical AD pathology and significant neuronal death more closely resembling that of AD patients.
Jin Yan, Zhimeng Tang, Yanyu Luo, Bin Liu, Xinxin Huang, Jun Wei, Feng Yue   +6 more
wiley   +1 more source