Data/hora: 07/06/2024 00:45:39

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Thyroid gland development in Rachycentron canadum during early life stages	
Autores: 	OTERO,ADRIANA P.S.; RODRIGUES,RICARDO V.; SAMPAIO,LUÍS A.; ROMANO,LUIS A.; TESSER,MARCELO B.	
Data: 	2014-09-01	
Ano: 	2014	
Palavras-chave: 	Colloid; Follicles; Larvae; Metamorphosis; Thyroid tissue.	
Resumo: 	The aim of this study was to describe the ontogeny of thyroid follicles in cobia Rachycentron canadum. Larvae were sampled daily (n=15 - 20) from hatching until 15 dah (days after hatching). Following, larvae were sampled every two days by 28 dah; a new sample was taken at 53 dah. The samples were dehydrated, embedded in Paraplast, and sections of 3 µm were dewaxed, rehydrated and stained with HE and PAS. A single follicle was already present 1 dah and three follicles were found 8 dah. The number of follicles increased up to 19 on 53 dah. The diameter of follicles and follicular cell height were lower 1 dah (6.83 ± 1.00 and 4.6 ± 0.01 µm), but increased from 8 dah (24.03 ± 0.46 µm e 6.43 ± 0.46 µm). From 8 dah, the presence of reabsorption vesicles was observed in the colloid and from the 19 dah some follicles did not present colloid. The early thyroid follicle appearance in cobia larvae as well as the high quantity of follicles without colloid and/or with vesicles even after the metamorphosis, might be the explanation of the fast growth of the cobia.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301507	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/0001-3765201420130187	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.86 n.3 2014	
Fonte: 	info:eu-repo/semantics/openAccess