Data/hora: 09/06/2024 17:29:17

Provedor de dados: 	83	
País: 	Brazil	
Título: 	Characterization of the early development of Pseudoplatystoma reticulatum Eigenmann &amp;amp; Eigenmann, 1889 (Siluriformes: Pimelodidae) from the Paraguay River Basin	
Autores: 	Andrade,Fernanda F.; Lima,Ariane F.; Assumpção,Lucileine; Makrakis,Sergio; Kasai,Rodrigo I. D.; Makrakis,Maristela C.	
Data: 	2016-01-01	
Ano: 	2016	
Palavras-chave: 	Allometric growth; Early life stages; Fish larvae; Morphology; Ontogeny.	
Resumo: 	ABSTRACT This study described the initial development of Pseudoplatystoma reticulatum, as well as changes in growth patterns. Morphometric and meristic variables were analyzed during embryonic, larval and juvenile periods, even as allometric growth coefficients for larvae and juveniles. Eggs showed an average diameter of 1.79 mm and broad perivitelline space (23.41%). The total length (TL) of the larvae ranged from 3.05 to 25.72 mm, and the total number of myomeres ranged from 45 to 50 (preanal = 13-16 and postanal = 30-35). Initial pigmentation is poor, concentrated at the extremities of the yolk sac. In the flexion stage, the pigmentation intensifies and forms a longitudinal stripe extending from the snout to the operculum and two longitudinal stripes on the body, one dorsal and the other ventral, that unite at the caudal peduncle. At first, there is a differential growth of the head and tail, and then there is the growth of the body, which shows changes in the ontogenetic priorities of feeding, swimming, and breathing capacities. Our results are very important for ecology, systematics, and hatchering, especially in terms of ontogenetic variation in morphology, growth, feeding, behavior, and mortality of P. reticulatum.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000200216	
Editor: 	Sociedade Brasileira de Ictiologia	
Relação: 	10.1590/1982-0224-20150032	
Formato: 	text/html	
Fonte: 	Neotropical Ichthyology  v.14 n.2 2016	
Fonte: 	info:eu-repo/semantics/openAccess