The anatomy of the thyroid gland among "fishes": phylogenetic implications for the Vertebrata
Chanet, B.; Meunier, F.J. (2014). The anatomy of the thyroid gland among "fishes": phylogenetic implications for the Vertebrata. Cybium 38(2): 89-116
In: Cybium. Muséum national d'Histoire naturelle: Paris. ISSN 0399-0974; e-ISSN 2101-0315, meer
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| Trefwoorden |
Biogeny > Phylogeny
Biology > Anatomy
Thyroid gland
Actinopterygii [WoRMS]; Chondrichthyes [WoRMS]; Vertebrata [WoRMS]
Marien/Kust |
| Abstract |
A study on the structure of the thyroid gland of 288 vertebrate species, conducted both on 99 dissections and analysis of the literature, leads to propose the following interpretations: i) the presence of this gland is a synapomorphy of Vertebrata; ii) a compact gland is a synapomorphy of Gnathostomes; iii) a diffuse gland is a possible synapomorphy of Halecostomes; iv) several independent cases of concentration in a few lobes in several groups, like Scaridae, Scombridae and some Carangimorphariae occurred and even a compact gland in Osteoglossomorphes. Moreover, the scattering of thyroidian islets in other organs (cephalic kidney, choroid,…) has occurred several times in teleost lineages and a compact thyroid gland embedded in a blood sinus appears to be a probable synapomorphy of Tetraodontiformes and Lophiiformes. |
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