The Origins of Larvae

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Springer Science & Business Media, 31 дек. 2003 г. - Всего страниц: 261

Many biological facts are irreconcilable with the assumption that larvae and adults evolved from the same genetic stock. The author of this book draws attention to these, and presents his alternative hypothesis that larvae have been transferred from one taxon to another.

In his previous book (Larvae and Evolution, 1992), the author used larval transfer to explain developmental anomalies in eight animal phyla. In the present book, he claims that the basic forms of all larvae and all embryos have been transferred from foreign taxa. This leads to a new, comprehensive theory on the origin of embryos and larvae, replacing the discredited 'recapitulation' theory of Haeckel (1866). Metamorphosis, previously unexplained, represents a change in taxon during development.

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Содержание

Introduction
1
OVERVIEW
9
Larvae
11
The Issues in Context
20
EXAMPLES
31
Blastulas Gastrulas and the First Animals
33
Coelenterate Animals
46
Trochophorate Animals Polychaetes Echiurans Sipunculans Molluscs
62
Echinoderms SeaUrchins and BrittleStars
138
Echinoderms Fossil Record
152
Urochordates
162
Arthropods
169
SOLUTIONS
199
Hybrids
201
CONCLUSIONS
215
Toward a New Zoology
217

NearTrochophorate Animals Flatworms Nemerteans Bryozoans Lophophorates
83
Echinoderms Adults and Larvae
94
Echinoderms and Hemichordates
108
Echinoderms Metamorphosis
123

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Стр. 234 - Mortensen, T. 1921. Studies of the Development and Larval Forms of Echinoderms.
Стр. 234 - Contributions to the study of the development and larval forms of echinoderms.
Стр. 236 - Shearer, C., de Morgan, W., and Fuchs, HM 1914. On the experimental hybridization of echinoids. Philosophical Transactions of the Royal Society of London B 204: 255-362, 7 pls.

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