A molecular filter for the cnidarian stinging response
نویسندگان
چکیده
منابع مشابه
Cnidarian internal stinging mechanism.
Stinging mechanisms generally deliver venomous compounds to external targets. However, nematocysts, the microscopic stinging organelles that are common to all members of the phylum Cnidaria, occur and act in both external and internal tissue structures. This is the first report of such an internal piercing mechanism. This mechanism identifies prey items within the body cavity of the sea anemone...
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for detecting the crowding of texture are both at play. Disentangling the two will be an interesting challenge. One promising line, as Durgin [8] suggests, will be to look for dissociations between number and texture perception. Manuela Piazza, Stanislas Dehaene and Marco Zorzi (personal communication) have shown that dyscalculic individuals have higher Weber fraction for number discrimination ...
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The rhodamine derivatives tetramethyl-rhodamine-5/6-maleimide (TROMI) and tetramethyl-rhodamine-6-isothiocyanate (TRITC) were allowed to react with living Hydra vulgaris. The two fluorescent dyes stain the polyps to different degrees, apparently without impairing their viability and behaviour. Concerning nematocytes, TROMI preferentially couples to cytoskeletal elements only of mounted nematocy...
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Two types of mechanosensitive proprioceptor organ are present on the stinging apparatus of the honeybee: campaniform sensilla and mechanosensory hairplates. The campaniform sensilla are located on the surface of the tapering sting-shaft, which comprises an unpaired stylet and paired lancets. Each sensillum on the lancet differs from that on the stylet in terms of their topography and external m...
متن کاملThe cellular and molecular basis of cnidarian neurogenesis.
Neurogenesis initiates during early development and it continues through later developmental stages and in adult animals to enable expansion, remodeling, and homeostasis of the nervous system. The generation of nerve cells has been analyzed in detail in few bilaterian model organisms, leaving open many questions about the evolution of this process. As the sister group to bilaterians, cnidarians...
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ژورنال
عنوان ژورنال: eLife
سال: 2020
ISSN: 2050-084X
DOI: 10.7554/elife.57578