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Ontogeny of the digestive system and the profile of proteases in larvae of cachara ( Pseudoplatystoma reticulatum Siluriformes: Pimelodidae ) and its hybrid ( Pseudoplatystoma corruscans × Pseudoplatystoma reticulatum )
Author(s) -
Mello Paulo Henrique,
Lundstedt Lícia Maria,
Moraes Gilberto,
Cavalheiro Araújo Bruno,
Leite Venturieri Rossana Luiza,
Guimarães Moreira Renata
Publication year - 2021
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.14771
Subject(s) - biology , digestive enzyme , zoology , biochemistry , enzyme , amylase
The development of the digestive system and digestive proteases was studied in cachara ( Pseudoplatystoma reticulatum ) and its hybrid ( P. reticulatum × Pseudoplatystoma corruscans ) during the first 25 days after fertilization. Both groups presented a fast and similar development of the digestive system, and the unspecific alkaline protease profile suggested that the digestive capacity of hybrid larvae is higher than that of cachara after the last half of the studied phase. The activities of trypsin and chymotrypsin were similar and observed since the oocyte. These observations suggested that cachara and its hybrid has similar digestive capacity and digestive system development.