scholarly journals Parallel evolution of direct development in frogs – Skin and thyroid gland development in African Squeaker Frogs (Anura: Arthroleptidae: Arthroleptis )

2020 ◽  
Author(s):  
Benjamin Naumann ◽  
Susan Schweiger ◽  
Jörg U. Hammel ◽  
Hendrik Müller
Keyword(s):  
Thyroid Gland ◽  
Parallel Evolution ◽  
Direct Development ◽  
Gland Development

scholarly journals Parallel evolution of direct development in frogs – Skin and thyroid gland development in African Squeaker Frogs (Anura: Arthroleptidae: Arthroleptis)

2020 ◽  
Author(s):  
Benjamin Naumann ◽  
Susan Schweiger ◽  
Jörg U. Hammel ◽  
Hendrik Müller
Keyword(s):  
Thyroid Hormone ◽  
Thyroid Gland ◽  
Parallel Evolution ◽  
Direct Development ◽  
Feeding Behaviors ◽  
Developmental Constraints ◽  
Organ Systems ◽  
Evolutionary Trajectories ◽  
Gland Development ◽  
Thyroid Gland Activity

AbstractCases of parallel evolution offer the possibility to identify adaptive traits and to uncover developmental constraints on the evolutionary trajectories of these traits. The independent evolution of direct development, from the ancestral biphasic life history in frogs is such a case of parallel evolution. In frogs, aquatic larvae (tadpoles) differ profoundly from their adult forms and exhibit a stunning diversity regarding their habitats, morphology and feeding behaviors. The transition from the tadpole to the adult is a climactic, thyroid hormone (TH)-dependent process of profound and fast morphological rearrangement called metamorphosis. One of the organ systems that experiences the most comprehensive metamorphic rearrangements is the skin. Direct-developing frogs lack a free-swimming tadpole and hatch from terrestrial eggs as fully formed froglets. In the few species examined, development is characterized by the condensed and transient formation of some tadpole-specific features and the early formation of adult-specific features during a “cryptic” metamorphosis. In this study we show that skin in direct-developing African squeaker frogs (Arthroleptis) is also repatterned from a tadpole-like to an adult-like histology during a cryptic metamorphosis. This repatterning correlates with an increase of thyroid gland activity. A comparison with data from the Puerto Rican coqui (Eleutherodactylus coqui) reveals that direct development might have evolved in parallel in these frogs by a comparable heterochronic shift of thyroid gland activity. This suggests that the development of many adult-features is still constrained by the ancestral dependency on thyroid hormone signaling.

scholarly journals Thyroid Gland Development in a Neotenic Goby (Ice Goby, Leucopsarion petersii) and a Common Goby (Ukigori, Gymnogobius urotaenia) during Early Life Stages

2003 ◽  
Vol 20 (7) ◽  
pp. 883-888 ◽  
Author(s):  
Yasuko Harada ◽  
Shigeo Harada ◽  
Izumi Kinoshita ◽  
Masaru Tanaka ◽  
Masatomo Tagawa
Keyword(s):  
Thyroid Gland ◽  
Early Life ◽  
Life Stages ◽  
Early Life Stages ◽  
Gland Development ◽  
Common Goby

Thyroid gland development and defects

2008 ◽  
Vol 22 (1) ◽  
pp. 57-75 ◽  
Author(s):  
Juergen Kratzsch ◽  
Ferdinand Pulzer
Keyword(s):  
Thyroid Gland ◽  
Gland Development

scholarly journals Hes1 Is Required for Appropriate Morphogenesis and Differentiation during Mouse Thyroid Gland Development

PLoS ONE ◽  
2011 ◽  
Vol 6 (2) ◽  
pp. e16752 ◽  
Author(s):  
Aurore Carre ◽  
Latif Rachdi ◽  
Elodie Tron ◽  
Bénédicte Richard ◽  
Mireille Castanet ◽  
...  
Keyword(s):  
Thyroid Gland ◽  
Gland Development ◽  
Mouse Thyroid

scholarly journals Minireview: Intrinsic and Extrinsic Factors in Thyroid Gland Development: An Update

Endocrinology ◽  
2011 ◽  
Vol 152 (8) ◽  
pp. 2948-2956 ◽  
Author(s):  
Mario De Felice ◽  
Roberto Di Lauro
Keyword(s):  
Thyroid Gland ◽  
Thyroid Hormones ◽  
Small Group ◽  
Extrinsic Factors ◽  
Recent Developments ◽  
Endodermal Cells ◽  
Gland Development ◽  
Intrinsic And Extrinsic Factors

In vertebrates the portion of the thyroid gland synthesizing the thyroid hormones develops from a small group of endodermal cells in the foregut. The nature of the signals that lead to the biochemical and morphogenetic events responsible for the organization of these cells into the adult thyroid gland has only recently become evident. In this review we summarize recent developments in the understanding of these processes, derived from evidence collected in several organisms.

scholarly journals Peri-conceptional changes in maternal exposure to sewage sludge chemicals disturbs fetal thyroid gland development in sheep

2013 ◽  
Vol 367 (1-2) ◽  
pp. 98-108 ◽  
Author(s):  
Sabine Hombach-Klonisch ◽  
Adrian Danescu ◽  
Farhana Begum ◽  
Maria R. Amezaga ◽  
Stewart M. Rhind ◽  
...  
Keyword(s):  
Thyroid Gland ◽  
Sewage Sludge ◽  
Maternal Exposure ◽  
Fetal Thyroid ◽  
Gland Development
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