Results 21 to 30 of about 15,474 (218)

Effect of thyroid hormone concentration on the transcriptional response underlying induced metamorphosis in the Mexican axolotl (Ambystoma)

open access: yesBMC Genomics, 2008
Background Thyroid hormones (TH) induce gene expression programs that orchestrate amphibian metamorphosis. In contrast to anurans, many salamanders do not undergo metamorphosis in nature. However, they can be induced to undergo metamorphosis via exposure
Samuels Amy K   +5 more
doaj   +1 more source

Fractals, metamorphoses and symmetries in quantum field theory [PDF]

open access: yesEPJ Web of Conferences, 2022
The mechanism of spontaneous breakdown of symmetry in quantum field theory is reviewed, the Goldstone theorem derived and the formation of ordered patterns is discussed.
Vitiello Giuseppe
doaj   +1 more source

METAMORPHOSIS AND IDENTITY CONSTRUCTION IN SALMAN RUSHDIE’S THE SATANIC VERSE [PDF]

open access: yesUniversity of Bucharest Review. Literary and Cultural Studies Series, 2022
Metamorphic spaces (temporal, geographical and mental) produce metamorphic bodies and identities. Metamorphosis arises as a dynamic principle of survival in borderline zones.
Petya Tsoneva Ivanova
doaj  

Divergent nucleic acid allocation in juvenile insects of different metamorphosis modes

open access: yesScientific Reports, 2021
Nucleic acids help clarify variation in species richness of insects having different metamorphosis modes, a biological conundrum. Here we analyse nucleic acid contents of 639 specimens of aquatic insects collected from four high mountain streams of ...
Manuel Villar-Argaiz   +2 more
doaj   +1 more source

Tadpole growth rates and gut bacterial community: Dominance of developmental stages over temperature variations.

open access: yesPLoS ONE, 2023
Tadpoles present an intriguing model system for studying the regulation and selection of gut microbiota. They offer a unique perspective to enhance our understanding of host-microbiota interactions, given their capacity to alter the dynamics of the gut ...
Jun-Kyu Park, Woong-Bae Park, Yuno Do
doaj   +1 more source

Perkembangan Metamorphosis Lalat Buah (Drosophilla Melanogaster) Pada Media Biakan Alami Sebagai Referensi Pembelajaran Pada Matakuliah Perkembangan Hewan

open access: yesBiotik: Jurnal Ilmiah Biologi Teknologi dan Kependidikan, 2015
Metamofosis adalah keseluruhan rangkaian perubahan bentuk dan ukuran sejak telur sampai menjadi dewasa (imago). Perkembangan metamorphosis sangat dipengaruhi oleh berbagai faktor.
Elita Agustina   +2 more
doaj   +1 more source

Comparisons of genetic constraints across life stages and across temperatures from Genetic independence between traits separated by metamorphosis is widespread but varies with biological function

open access: yes, 2023
Why is metamorphosis so pervasive? Does it facilitate the independent (micro)evolution of quantitative traits in distinct life-stages, like it enables some limbs and organs to develop at specific life-stages? We tested this hypothesis by measuring the expression of 6400 genes in 41 Drosophila melanogaster inbred lines at larval and adult stages.
Collet, Julie M.   +2 more
openaire   +1 more source

Differential effects of 3,5-T2 and T3 on the gill regeneration and metamorphosis of the Ambystoma mexicanum (axolotl)

open access: yesFrontiers in Endocrinology, 2023
Thyroid hormones (THs) regulate tissue remodeling processes during early- and post-embryonic stages in vertebrates. The Mexican axolotl (Ambystoma mexicanum) is a neotenic species that has lost the ability to undergo metamorphosis; however, it can be ...
I. Lazcano   +6 more
doaj   +1 more source

Sequencing and de novo analysis of Crassostrea angulata (Fujian oyster) from 8 different developing phases using 454 GSFlx. [PDF]

open access: yesPLoS ONE, 2012
Research on the mechanism for early development of shellfish, such as body plan, shell formation, settlement and metamorphosis is currently an active research field.
Ji Qin   +5 more
doaj   +1 more source

Gut microbial ecology of Xenopus tadpoles across life stages

open access: yesPeer Community Journal, 2021
Background: The microorganism world living in amphibians is still largely under-represented and under-studied in the literature. Among anuran amphibians, African clawed frogs of the Xenopus genus stand as well-characterized models with an in-depth ...
Scalvenzi, Thibault   +3 more
doaj   +1 more source

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