Flow sensing behaviors of Xenopus laevis are stable across metamorphosis
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چکیده
منابع مشابه
Remodeling of the intestine during metamorphosis of Xenopus laevis.
Thyroid hormone controls remodeling of the tadpole intestine during the climax of amphibian metamorphosis. In 8 days, the Xenopus laevis tadpole intestine shortens in length by 75%. Simultaneously, the longitudinal muscle fibers contract by about the same extent. The radial muscle fibers also shorten as the diameter narrows. Many radial fibers undergo programmed cell death. We conclude that mus...
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Xenopus laevis tadpoles that arrest development and remain as larvae for several years sometimes occur spontaneously in laboratory populations. These tadpoles cease development at an early hindlimb stage, but continue to grow and develop into grossly deformed giants. Giant tadpoles lack thyroid glands, and differ in morphology and behaviour from normal larvae. They are negatively buoyant, typic...
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Sperm-mediated transgenesis of Xenopus laevis is the first application of genetic methodology to an amphibian. However, some transgenes are lethal when they are expressed constitutively. To study the influence of these genes on amphibian metamorphosis and to generate F1 progeny from mature transgenic adults, these transgenes must be placed under the control of an inducible system so that they c...
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Thyroid hormone induces the complete metamorphosis of anuran tadpoles into juvenile frogs. Arguably, anuran metamorphosis is the most dramatic effect of a hormone in any vertebrate. Recent advances in pharmacology and molecular biology have made the study of this remarkable process in the frog Xenopus laevis attractive to developmental biologists and endocrinologists alike. In particular, the a...
متن کاملDiverse developmental programs of Xenopus laevis metamorphosis are inhibited by a dominant negative thyroid hormone receptor.
Metamorphosis of anuran tadpoles is controlled by thyroid hormone (TH). Here we demonstrate that transgenic Xenopus laevis tadpoles expressing a dominant negative form of TH receptor-alpha are resistant to a wide variety of the metamorphic changes induced by TH. This result confirms that TH receptors mediate both early and late developmental programs of metamorphosis as diverse as growth in the...
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ژورنال
عنوان ژورنال: Frontiers in Behavioral Neuroscience
سال: 2012
ISSN: 1662-5153
DOI: 10.3389/conf.fnbeh.2012.27.00003