Abstract：
:Myogenesis of two representatives of Platyhelminthes, Stylostomum sanjuania and Pseudoceros canadensis, was followed from egg deposition until well-differentiated free-swimming larval stages, using F-actin staining and confocal laserscanning microscopy. Zonulae adhaerentes are the only structures to stain before 50% of development between egg deposition and hatching in S. sanjuania, and before 67% of development in P. canadenis. Subsequently, irregular fibers appear in the embryo, followed by a helicoid muscle close to the apical pole. Three longitudinal muscle pairs form, of which the dorsal pair remains more pronounced than the others. Gradually, new muscles form by branching or from double-stranded muscle zones adjacent to existing muscles. This results in an elaborate muscular bodywall that consists of a single helicoid muscle as well as multiple circular and longitudinal muscles. Diverse retractor muscles insert at the sphincter muscles around the stomodeum. The overall arrangement and formation mode of the larval musculature appears very similar in both species, although only P. canadensis has a primary circular muscle posterior to the helicoid muscle. Muscle formation in the apical region of the embryo precedes that at the abapical pole and the primary longitudinal muscles form slightly later than the primary circular muscles. Myogenesis and larval myoanatomy appears highly conserved among polyclad flatworms, but differs significantly from that of other trochozoan clades. Our data suggest that the larval muscular ground pattern of polyclad larvae comprises a bodywall consisting of a helicoid muscle, circular and longitudinal muscles, several retractor muscles, and sphincter muscles around the stomodeum.
journal_name
Evol Devjournal_title
Evolution & developmentauthors
Semmler H,Wanninger Adoi
10.1111/j.1525-142X.2010.00405.xsubject
Has Abstractpub_date
2010-03-01 00:00:00pages
210-21issue
2eissn
1520-541Xissn
1525-142Xpii
EDE405journal_volume
12pub_type
杂志文章abstract：:The sex determination pathway is different between Drosophila melanogaster and Bombyx mori in the initial signal. Here we show evidence that the sex determination pathway in B. mori is similar to that of D. melanogaster at the level of the terminal regulator, doublesex (dsx), which is essential for the proper differen...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2005.05007.x
更新日期：2005-01-01 00:00:00
abstract：:"Hormone manipulation" is being used increasingly in evo-devo studies as the sole or primary technique to investigate the regulation of insect polymorphism by hormones, most notably juvenile hormone (JH). This manuscript critically evaluates the limitations and strengths of this indirect method for inferring aspects o...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2007.00181.x
更新日期：2007-09-01 00:00:00
abstract：:Phenotypes of organisms are not determined completely genetically, but vary according to environmental factors (phenotypic plasticity). Some organisms express several discrete adaptive phenotypes (polyphenism). Social insects possess a few types of individuals (castes) in their colonies, to which specific tasks are al...
journal_title：Evolution & development
pub_type： 杂志文章,评审
doi：10.1111/j.1525-142X.2005.05014.x
更新日期：2005-03-01 00:00:00
abstract：:Homeobox transcription factors are commonly involved in developmental regulation in diverse eukaryotes, including plants, animals, and fungi. The origin of novel homeobox genes is thought to have contributed to many evolutionary innovations in animals. We perform a molecular phylogenetic analysis of cnox2, the best st...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1046/j.1525-142x.2003.03041.x
更新日期：2003-07-01 00:00:00
abstract：:Stinging cells called cnidocytes are a defining trait of the cnidarians (sea anemones, corals, jellyfish, and their relatives). In hydrozoan cnidarians such as Hydra, cnidocytes develop from interstitial stem cells set aside in the ectoderm. It is less clear how cnidocytes develop outside the Hydrozoa, as other cnidar...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12278
更新日期：2019-03-01 00:00:00
abstract：:Pax family genes encode a class of transcription factors that regulate various developmental processes. To shed light on the evolutionary history of these genes in Panarthropoda (Onychophora + Tardigrada + Arthropoda), we analyzed the Pax repertoire in the embryonic and adult transcriptomes of the onychophoran Euperip...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12110
更新日期：2015-01-01 00:00:00
abstract：:Vertebrae are serially homologous structures with tight integration through their evolution and development. However, in mammals, the thoracic and lumbar regions are morphologically and functionally differentiated. We test the hypothesis that locomotor specialization is associated with altered post-natal growth patter...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12069
更新日期：2014-03-01 00:00:00
abstract：:Jaw shedding and replacement of Diopatra aciculata (Onuphidae, Eunicida), by the same process as arthropod molting, involving apolysis and ecdysis, is described here. These observations suggest that molting has either evolved convergently in eunicidan polychaetes and ecdysozoans or it was present in the last ecdysozoa...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2005.05039.x
更新日期：2005-07-01 00:00:00
abstract：:Amphioxus probably has only a single gene (AmphiPax3/7) in the Pax3/7 subfamily. Like its vertebrate homologs (Pax3 and Pax7), amphioxus AmphiPax3/7 is probably involved in specifying the axial musculature and muscularized notochord. During nervous system development, AmphiPax3/7 is first expressed in bilateral antero...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1046/j.1525-142x.1999.99019.x
更新日期：1999-11-01 00:00:00
abstract：:Whey acidic protein (WAP) belongs to a family of four disulfide core (4-DSC) proteins rich in cysteine residues and is the principal whey protein found in milk of a number of mammalian species. Eutherian WAPs have two 4-DSC domains, whereas marsupial WAPs are characterized by the presence of an additional domain at th...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2009.00343.x
更新日期：2009-07-01 00:00:00
abstract：:The regulation of floral organ identity was investigated using a forward genetic approach in five floral homeotic mutants of Thalictrum, a noncore eudicot. We hypothesized that these mutants carry defects in the floral patterning genes. Mutant characterization comprised comparative floral morphology and organ identity...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12357
更新日期：2020-11-12 00:00:00
abstract：:The astounding variety of angiosperm flower morphologies has evolved in response to many selective forces. Flower development is highly coordinated and involves developmental associations between size and shape, ontogenetic allometry, which in turn affect the morphology of mature flowers. Although ontogenetic allometr...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12246
更新日期：2018-01-01 00:00:00
abstract：:How do proteins evolve while maintaining their function? Previous studies find a highly stringent structure/function relationship between the Drosophila melanogaster testis-specific tubulin beta2 and the spermtail axoneme, such that small changes in the beta2 protein render it unable to generate a motile axoneme. This...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2006.05072.x
更新日期：2006-01-01 00:00:00
abstract：:Astacin-like metalloproteases are ubiquitous in the animal kingdom but their phylogenetic relationships and ancient functions within the Metazoa are unclear. We have cloned and characterized four astacin-like cDNAs from the marine hydroid Hydractinia echinata and performed a database search for related genes in the dr...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2006.00092.x
更新日期：2006-03-01 00:00:00
abstract：:Evolution of segmented limbs is one of the key innovations of Arthropoda, allowing development of functionally specific specialized head and trunk appendages, a major factor behind their unmatched evolutionary success. Proximodistal limb patterning is controlled by two regulatory networks in the vinegar fly Drosophila...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12222
更新日期：2017-05-01 00:00:00
abstract：:The way in which novelties that lead to macroevolutionary events originate is a major question in evolutionary biology, and one that can be addressed using the fire salamander (Salamandra salamandra) as a model system. It is exceptional among amphibians in displaying intraspecific diversity of reproductive strategies....
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2006.00141.x
更新日期：2007-01-01 00:00:00
abstract：:Mollusks have a wide variety of body plans, which develop through conserved early embryogenesis, namely spiral embryonic development and trochophore larvae. Although the comparative study of mollusks has attracted the interest of evolutionary developmental biology researchers, less attention has been paid to bivalves....
journal_title：Evolution & development
pub_type： 杂志文章,评审
doi：10.1111/ede.12334
更新日期：2020-11-01 00:00:00
abstract：:Mammalian heterodont dentition is differentiated into incisors, canines, premolars, and molars in the mesial-distal direction, in both the upper and lower jaws. Although all the lower teeth are rooted in the mandible, the upper incisors are rooted in the premaxilla and the upper canine and the teeth behind it are in t...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12116
更新日期：2015-03-01 00:00:00
abstract：:An ongoing challenge to evolutionary developmental biology is to understand how developmental evolution on the level of populations and closely related species relates to macroevolutionary transformations and the origin of morphological novelties. Here we explore the developmental basis of beetle horns, a morphologica...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2005.05020.x
更新日期：2005-05-01 00:00:00
abstract：:In Insecta and malacostracan Crustacea, neurons in the ventral ganglia are generated by the unequal division of neuronal stem cells, the neuroblasts (Nbs), which are arranged in a stereotyped, grid-like pattern. In malacostracans, however, Nbs originate from ectoteloblasts by an invariant lineage, whereas Nbs in insec...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1046/j.1525-142x.2001.003003154.x
更新日期：2001-05-01 00:00:00
abstract：:Repeated tooth initiation occurs often in nonmammalian vertebrates (polyphyodontism), recurrently linked with tooth shedding and in a definite order of succession. Regulation of this process has not been genetically defined and it is unclear if the mechanisms for constant generation of replacement teeth (secondary den...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2006.00118.x
更新日期：2006-09-01 00:00:00
abstract：:Reproductive division of labor is one of the crucial features in social insects, however, the developmental mechanisms leading to modifications in the reproductive apparatus of workers are still not very clear. Ants show a remarkable diversity in the morphological specialization of the worker's reproductive apparatus,...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12182
更新日期：2016-03-01 00:00:00
abstract：:The N-terminal region of human HOXA13 has seven discrete polyalanine tracts. Our previous analysis of these tracts in multiple major vertebrate clades suggested that three are mammal-specific. We now report the N-terminal HOXA13 repetitive tract structures in the monotreme Tachyglossus aculeatus (echidna). Contrary to...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2008.00254.x
更新日期：2008-07-01 00:00:00
abstract：:In termites, the capacity of workers to differentiate into neotenic reproductives is an important characteristic that deserves particular attention. To gain insight into the differentiation pathway, the potentialities of workers and the endocrinal changes during the formation of neotenics were compared in two sympatri...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2011.00464.x
更新日期：2011-03-01 00:00:00
abstract：:The development of the coeloms is described in an echinoid with an abbreviated larval development and shows the early morphogenesis of the coeloms of the adult stage. The development is described from images obtained by laser scanning confocal microscopy. The development in Heliocidaris erythrogramma is asymmetric wit...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2011.00492.x
更新日期：2011-07-01 00:00:00
abstract：:Ontogeny often provides the most compelling evidence for primary homology in evolutionary developmental studies and is critical to interpreting complex structures in a phylogenetic context. As an example of this, we document the ontogenetic development of the caudal skeleton of Caranx crysos by examining a series of c...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2007.00148.x
更新日期：2007-03-01 00:00:00
abstract：:This essay recapitulates major paths followed by the Russian tradition of what we refer to today as evolutionary developmental biology ("evo-devo"). The article addresses several questions regarding the conceptual history of evolutionary embryological thought in its particularly Russian perspective: (1) the assertion ...
journal_title：Evolution & development
pub_type： 历史文章,杂志文章
doi：10.1111/j.1525-142X.2011.00518.x
更新日期：2012-01-01 00:00:00
abstract：:The phylogenetic positions of frogs, salamanders, and caecilians have been difficult to establish. Data matrices based primarily on Paleozoic taxa support a monophyletic origin of all Lissamphibia but have resulted in widely divergent hypotheses of the nature of their common ancestor. Analysis that concentrates on the...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1046/j.1525-142x.2003.03038.x
更新日期：2003-05-01 00:00:00
abstract：:Evolutionary transitions in larval nutritional mode have occurred on numerous occasions independently in many marine invertebrate phyla. Although the evolutionary transition from feeding to nonfeeding development has received considerable attention through both experimental and theoretical studies, mechanisms underlyi...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2004.04047.x
更新日期：2004-11-01 00:00:00
abstract：:The Drosophila sex comb (SC) has been hailed as a powerful tool for integrative studies in development, evolution, and behavior, but its ontogeny is poorly understood, even in the model organism Drosophila melanogaster. Using 4D live imaging and other techniques, we carried out a detailed analysis of the cellular even...
journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/j.1525-142X.2009.00319.x
更新日期：2009-03-01 00:00:00
