Results 251 to 260 of about 22,375 (299)

Towards the Sea of Stars

2021
While looking up to the sky, humans always wondering who we are, where we come from and whether we are alone. In the vast universe, are there other civilizations? For thousands of years, man has merely observed the universe through the visible spectrum, while the radiation from celestial bodies covers the entire electromagnetic spectrum.
Haiyan Zhang, Lei Qian, Caihong Sun, Chengmin Zhang, Wenjing Cai, Aiying Zhou, Chengjin Jin, Li Xiao, Dongjun Yu, Qing Zhao, Boqin Zhu, Wenbai Zhu, Lichun Zhu, Ming Zhu, Liqiang Song, Mingchang Wu, Baoqing Zhao, Ming Zhu, Gaofeng Pan, Hui Li, Rui Yao, Youling Yue, Bo Zhang, Rurong Chen, Boyang Liu, Li Yang, Na Liu, Jiatong Xie, Yan Zhu, Hongfei Liu, Zhisheng Gao, Xiaobing Chen   +31 more
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Cooperative transport in sea star locomotion

Current Biology
It is unclear how animals with radial symmetry control locomotion without a brain. Using a combination of experiments, mathematical modeling, and robotics, we tested the extent to which this control emerges in sea stars (Protoreaster nodosus) from the local control of their hundreds of feet and their mechanical interactions with the body. We discovered
Theodora, Po, Eva, Kanso, Matthew J, McHenry   +2 more
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Settlement Preferences in Temperate Sea Stars

The Biological Bulletin
AbstractMany marine invertebrates possess biphasic life histories, during which larvae develop in the plankton and adults inhabit the benthos. The transition between phases entails the settlement of larvae onto substrata, completion of metamorphosis, and survival as vulnerable early juveniles. The perimetamorphic period, encompassing settlement and the
Augustin Roman, Kalytiak-Davis, Jonathan Douglas, Allen   +1 more
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Single copy DNA homology in sea stars

Journal of Molecular Evolution, 1982
The sequence homology in the single copy DNA of sea stars has been measured. Labeled single copy DNA from Pisaster ochraceus was reannealed with excess genomic DNA from P. brevispinus, Evasterias troschelii, Pycnopodia helianthoides, Solaster stimpsoni, and Dermasterias imbricata.
M J, Smith, R, Nicholson, M, Stuerzl, A, Lui   +3 more
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Fouling-resistant surfaces of tropical sea stars

Biofouling, 2007
Qualitative evidence suggests sea stars are free of fouling organisms; however the presence of fouling-resistant surfaces of sea stars has not previously been documented. Field surveys were conducted in northern Queensland, Australia, during the wet and dry seasons and several tropical sea star species were examined for surface-associated micro- and ...
Guenther, Jana, Walker-Smith, Genefor, Waren, Anders, de Nys, Rocky   +3 more
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Isolation and Characterization of Sea Star Factor

Scandinavian Journal of Immunology, 1976
Sea star factor (SSF) harvested from the echinoderm Asterias forbesi celomocytes is a potent inhibitor of the primary immune response to T‐dependent antigens and also suppresses concanavalin‐A‐induced mitogenesis. We have isolated and purified a basic protein from this source which has a molecular weight of approximately 38,000 daltons and is ...
R A, Prendergast, S H, Liu
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Collective Neuromechanics in Sea Stars

Integrative And Comparative Biology
Synopsis Animal locomotion arises from the interaction between motor commands from the nervous system and the body’s mechanical properties. The field of neuromechanics has traditionally framed locomotion as a product of neural control, body mechanics, and sensory feedback. However, many animals deviate from this conventional paradigm. An
Theodora Po, Matthew J McHenry
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The phylogeny of sea-stars

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 1963
(1) The rod-shaped skeletal virgalia of lower Palaeozoic somasteroids are homologues of the major skeletal elements of modern asteroids and ophiuroids. (2) The major skeletal elements of asteroids differentiate along growth gradients which show progressive alterations in strength and direction, such that the various families can be ...
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Sea Star Thermal Stressors

Sea star populations have undergone large-scale changes with recent marine heatwaves (MHW), thus identifying these taxa as vulnerable and sensitive to climate extremes. This project would support a developing collaboration with UVic Amanda Bates' laboratory to study impacts of climate change on understudied marine organisms.
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Echinoderms (Phylum Echinodermata: sea stars, brittle stars, sea urchins, sea cucumbers)

2018
Harold J. Harlan, James A. Swaby, David E. Bowles   +2 more
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