Amphibian Morphogenesis by Harold Fox

By Harold Fox

This booklet happened because of a evaluation I had written previous on fea­ tures of mobile alterations happening in the course of anuran metamorphosis. just a restricted therapy of this topic was once attainable in this sort of circumscribed paintings and purely particular examples of natural switch have been handled. hence the sins of omission weighed seriously, for therefore a lot info couldn't be incorporated to supply a extra complete and authenticated account of the frilly, complicated, and far-reaching adjustments that an aquatic larva undergoes to turn into a terrestrial froglet. a great deal of my operating lifestyles has been spent investigating amphib­ ians, in particular their larval developmental morphology in the course of metamor­ phosis, first on the point of sunshine microscopy and in later years by way of electronmicroscopy. before everything i used to be really fascinated by morpho­ logical homologies of quite a few larval buildings, akin to the cranial and pharyngeal skeleton and the nerves and musculature, that allows you to study extra approximately amphibian phylogeny, for in the course of my pre-and early postgrad­ uate years G. R. Beer and D. M. S. Watson encouraged an timeless curiosity in and recognize for vertebrate comparative anatomy. besides the fact that, it now seems that amphibian phylogenetic relationships are most sensible handled through the paleontologists, so ably established through D. M. S. Watson and A. S. Romer and the modern lovers during this box like A. L. Panchen, R. L. Carroll, E. Jarvik, and okay. S. Thompson between a bunch of others, rather within the USA.

Show description

Read Online or Download Amphibian Morphogenesis PDF

Best nonfiction_8 books

System Modeling and Optimization: 25th IFIP TC 7 Conference, CSMO 2011, Berlin, Germany, September 12-16, 2011, Revised Selected Papers

This booklet is a suite of completely refereed papers awarded on the twenty fifth IFIP TC 7 convention on procedure Modeling and Optimization, held in Dresden, Germany, in September 2011. The fifty five revised papers have been rigorously chosen from a variety of submissions. they're geared up within the following topical sections: keep watch over of dispensed parameter structures; stochastic optimization and regulate; stabilization, suggestions, and version predictive regulate; circulation regulate; form and structural optimization; and purposes and keep an eye on of lumped parameter platforms.

Receptor-Mediated Targeting of Drugs

Traditional makes an attempt to regulate mobilephone behaviour and serve as are frequently marred by means of the toxicity of the medicine used, their untimely waste or inactivation or through their lack of ability to engage with or succeed in goal websites successfully. New traits in pharmacology empha­ dimension the advance of tools for the optimization of drug motion, for example by means of the supply of substances, enzymes, hormones, antigens, genetic fabric, ets.

Myelination and Demyelination: Implications for Multiple Sclerosis

In June 1987, neurobiologists, immunologists, molecular biologists, virologists and neurologists from a number of nations met in Vancouver to debate fresh advances of relevance to a number of sclerosis. The symposium was once part of the twenty second Canadian Congress of Neurological Sciences assembly and used to be backed by means of cash from the a number of Sclerosis Society of Canada and the clinical study Council of Canada.

Extra info for Amphibian Morphogenesis

Sample text

Asper. Neurulae to end of metamorphosis. ). Described five of the 11 spp. represented; Leptodactylus flavipictus, L. labyrinthicus, L. pentadactylus, L. rhodonotus, L. 30-38 General information 8. Tables of Staged Specimens (continued) ~ ~ ~

1';' ~ ~ ~ tT1 ~. ~ CJ) cWake, 1980 "Lamotte and Xavier, 1972a Lamotte and Lescure, 1977 Bufo woodhousei: fowleri Nectophrynoides malcolmi N ectophrynoides occidentalis 1954 bSchreiber, 1937 bGosner and Black, Bufo vertebralis hoeschi Bufo vulgaris Bufo valliceps Bufo rubropunctatus Bufo regularis Bufo pusillus Bufo quercicus Forge and Barbault, 1977 "Channing, 1972 bVolpe and Dobie, 1959 Lamotte and ZuberVogeli, 1954 "Sedra and Michael, 1961 cFonnas and Pugin, 1978 "Limbaugh and Volpe, 1957 Channing, 1976b bAdler, 1901 Bufo pentoni General infonnation on larvae including illustrations of those of the following spp.

11 , , ';q --- / I Fig. 2B. Parts I-III. Example of a staged series of an anuran Bufa bufa from the first cleaved egg to the completion of metamorphosis and formation of the tiny toadlet. In this series. Period I includes egg segmentation; Period II the formation of the gastrula and the neurula; Period III organogenesis of the embryo and larva; and Period IV larval metamorphosis, from the first origin of the hindlimbs. ) Staging of Embryonic and Larval Amphibians , .... •.. IIh G III. _..

Download PDF sample

Rated 4.07 of 5 – based on 5 votes