Die innere Entwicklung des Chamäleonkeimes nach der Furchung bis zum Durchbruch des Urdarms

Peter, Karl

doi:10.1007/bf02123873

Cited by 14 publications

(8 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…) and T rachemys scripta (Bachvarova et al . )]; the lizards [ C hamaeleo vulgaris (Peter ); C hamaesaura anguinea , M abuia megalura and C hamaeleo bitaeniatus (Pasteels ,b); L acerta vivipara (Hubert ); A gama impalearis (El Mouden et al . ); P latydactylus mauritanicus (Will ); and L acerta muralis , L acerta lilfordi and L acerta viridis (Will )], the snakes [ T ropidonotus natrix (Ballowitz ); T hamnophis sirtalis (Zehr )]; the tuatara [ S phenodon punctatus (Dendy ; Tribe & Brambell )] and the crocodiles [ A lligator mississippiensis (Clarke ); and C rocodylus niloticus (Voeltzkow )].…”

Section: Introductionmentioning

confidence: 99%

“…1A). Pioneers of comparative embryology like Kupffer, Balfour, Will, Mitsukuri, Peter and Pasteels had studied reptilian embryos in great detail (Balfour 1879;Kupffer 1882;Will , 1896Mitsukuri 1894;Peter 1935, 1939Pasteels 1937, 1957b. But concerning their early development, very few papers have been published in the last two decades (Arendt & Nubler-Jung 1999;El Mouden et al 2000;Gilland & Burke 2004;Coolen et al 2008;Bachvarova et al 2009).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A little winning streak: The reptilian‐eye view of gastrulation in birds

Bertocchini

Alev²,

Nakaya³

et al. 2012

Dev Growth Differ

View full text Add to dashboard Cite

The primitive streak is where the mesoderm and definitive endoderm precursor cells ingress from the epiblast during gastrulation. It is often described as an embryological feature common to all amniotes. But such a feature has not been associated with gastrulation in any reptilian species. A parsimonious model would be that the primitive streak evolved independently in the avian and mammalian lineages. Looking beyond the primitive streak, can one find shared features of mesoderm and endoderm formation during amniote gastrulation? Here, we survey the literature on reptilian gastrulation and provide new data on Brachyury RNA and laminin protein expression in gastrula-stage turtle (Pelodiscus sinensis) embryos. We propose a model to reconcile the primitive streak-associated gastrulation in birds and the blastopore-associated gastrulation in extant reptiles.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A little winning streak: The reptilian‐eye view of gastrulation in birds

Bertocchini

Alev²,

Nakaya³

et al. 2012

Dev Growth Differ

View full text Add to dashboard Cite

show abstract

“…A different mechanism of amniogenesis has been recorded in the chamaeleonid Chamaeleo chamaeleon by Schauinsland (1903Schauinsland ( , 1906 and Peter (1934Peter ( , 1935. The ectamniotic ridge appears precociously in early stages with a flattened bilaminar embryonid disc.…”

Section: Order Squamatamentioning

confidence: 93%

Major Patterns in Vertebrate Evolution

Blair¹,

Hecht²,

Goody³

et al. 1977

View full text Add to dashboard Cite

“…For example, the very slow increase in AV diameter of Chamaeleo chamaeleon at 26ЊC parallels the protracted pace of gastrulation (Peter 1935;Bons and Bons 1960;Blanc 1974). For eggs in T1, Note.…”

Section: Diapause and Cold Torpormentioning

confidence: 95%

Developmental Arrest during Embryonic Development of the Common Chameleon (Chamaeleo chamaeleon) in Spain

Andrews¹,

Díaz‐Paniagua²,

Marco³

et al. 2008

Physiological and Biochemical Zoology

View full text Add to dashboard Cite

Embryonic development of the common chameleon, Chamaeleo chamaeleon, was monitored from oviposition to hatching at a field site in southwestern Spain and in the laboratory under five experimental temperature regimes. Embryos were diapausing gastrulae at the time of oviposition; developmental arrest in the field continued as cold torpor during winter. Postarrest development in the field commenced in April, and hatching occurred in August, for a total incubation period of 10.5 mo. In the laboratory, one group of eggs was incubated at a constant warm (26 degrees C) temperature. The remaining treatments simulated field conditions and consisted of initial periods of warm temperature of 0, 27, 46, and 71 d, a subsequent 4-mo period of cold winter (16 degrees C) temperature, and a final period of warm (26 degrees C) temperature. Embryos in the constant warm temperature treatment were in diapause an average of 3 mo, with clutch means ranging from 2 to 4 mo. Hatching among clutches occurred over 2 mo. In contrast, for field and experimental eggs that experienced cold winter conditions, hatching within treatments occurred over 2-14 d; "winter" conditions synchronized development. The length of time between the end of cold conditions and hatching did not differ among treatments; development thus resumed as soon as temperature was suitable regardless of the initial period of warm temperature. Diapause in nature thus insures that embryos remain gastrulae after oviposition despite nest temperatures that may be warm enough to support development.

show abstract

Die innere Entwicklung des Chamäleonkeimes nach der Furchung bis zum Durchbruch des Urdarms

Cited by 14 publications

References 5 publications

A little winning streak: The reptilian‐eye view of gastrulation in birds

A little winning streak: The reptilian‐eye view of gastrulation in birds

Major Patterns in Vertebrate Evolution

Developmental Arrest during Embryonic Development of the Common Chameleon (Chamaeleo chamaeleon) in Spain

Contact Info

Product

Resources

About