By Andreas Wanninger
This multi-author, six-volume paintings summarizes our present wisdom at the developmental biology of all significant invertebrate animal phyla. the most facets of cleavage, embryogenesis, organogenesis and gene expression are mentioned in an evolutionary framework. each one bankruptcy provides an in-depth but concise evaluation of either classical and up to date literature, supplemented by means of various colour illustrations and micrographs of a given animal workforce. The principally taxon-based chapters are supplemented by means of essays on topical features proper to modern day EvoDevo study reminiscent of regeneration, embryos within the fossil checklist, homology within the age of genomics and the position of EvoDevo within the context of reconstructing evolutionary and phylogenetic eventualities. a listing of open questions on the finish of every bankruptcy could function a resource of thought for the following iteration of EvoDevo scientists. Evolutionary Developmental Biology of Invertebrates is a must have for any scientist, instructor or scholar attracted to developmental and evolutionary biology in addition to usually invertebrate zoology.
This is the 1st of 3 volumes devoted to animals that molt during their lifecycle, the Ecdysozoa. It covers all non-hexapods and non-crustaceans, i.e., the Cycloneuralia, Tardigrada, Onychophora, Chelicerata and Myriapoda. whereas the Nematoda and all different phyla are taken care of of their personal chapters, the remainder cycloneuralians are awarded together because of the dearth of accessible developmental facts on its person subclades.
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Extra resources for Evolutionary Developmental Biology of Invertebrates 3: Ecdysozoa I: Non-Tetraconata
Segmental mesodermal pouches are seen in the posterior half of the embryo. The outline of the developing pharynx is already visible in the anterior part of the embryo. Abbreviations: ec ectoderm, en endoderm, ph pharynx, po mesodermal pouches. Scale bars: 10 μm 3 Tardigrada 43 A B Fig. 5 Developing nervous system in an embryo of Hypsibius dujardini stained with phalloidin-rhodamine (glow scale) and SYBR® Green (cyan). Ventral view, anterior is left. Confocal micrographs, maximum projections. (A) Combined phalloidin-rhodamine and SYBR® Green labeling.
P. pacificus is equipped with versatile teeth-like denticles in its mouth, and it can assume two forms, the socalled eurystomatous (EU) and the stenostomatous (ST) form (Fig. 7). EU worms are distinguished by a bigger clawlike dorsal left denticle and an extra right ventral denticle not present in ST animals, in addition to quantitative differences in the shape of the buccal cavity in EU worms (Fig. 7). The mouth of an individual nematode is irreversibly determined and executed during larval development.
This involves a different perspective of research. One example that can highlight these novel needs and which has been outlined above is nematode dauer development. For a long time, researchers have focused purely on the developmental and genetic aspects of dauer formation. However, dauer development also represents an example of phenotypic plasticity, providing an important link to ecology and evolution. Any finding made for the regulation of dauer development has to be considered in the context of these disciplines.
Evolutionary Developmental Biology of Invertebrates 3: Ecdysozoa I: Non-Tetraconata by Andreas Wanninger