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Temperature induced variation in gene expression of thyroid hormone receptors and deiodinases of European eel ( Anguilla anguilla ) larvae ArchiMer
Politis, Sebastian Nikitas; Servili, Arianna; Mazurais, David; Zambonino-infante, Jose-luis; Miest, J. J.; Tomkiewicz, J.; Butts, I. A. E..
Thyroid hormones (THs) are key regulators of growth, development, and metabolism in vertebrates and influence early life development of fish. TH is produced in the thyroid gland (or thyroid follicles) mainly as T4 (thyroxine), which is metabolized to T3 (3,5,3’-triiodothyronine) and T2 (3,5-diiodothyronine) by deiodinase (DIO) enzymes in peripheral tissues. The action of these hormones is mostly exerted by binding to a specific nuclear thyroid hormone receptor (THR). In this study, we i) cloned and characterized thr sequences, ii) investigated the expression pattern of the different subtypes of thrs and dios, and iii) studied how temperature affects the expression of those genes in artificially produced early life history stages of European eel (Anguilla...
Tipo: Text Palavras-chave: Aquaculture; Fish; Early life history.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00409/52020/52678.pdf
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Ontogenetic development of Heterocharax macrolepisEigenmann (Ostariophysi: Characiformes: Characidae) with comments on the form of the yolk sac in the Heterocharacinae Neotropical Ichthyology
Mattox,George M. T.; Hoffmann,Martin; Hoffmann,Peter.
Fishes in early developmental stages frequently have morphological features that differ from those of adult stages, and many characters found later in ontogeny are not available in initial stages. Hence, morphological descriptions of early stages are useful to provide information for the identification of eggs and larvae, a knowledge still restricted among Neotropical fishes. We studied the development of Heterocharax macrolepis, a heterocharacine whose adult specimens from the aquarium trade were kept and spawned at around 23-24ºC. A developmental series of 51 specimens was preserved, ranging from 3.2 mm notochord length to 18.6 mm standard length, covering approximately the first 73 days post-hatching. We described the development of main morphological...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Early life history; Morphology; Pseudotympanum; Synapomorphy; Systematics.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000200353
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