Premium
Carbohydrate metabolism during embryonic and larval development of Odonthestes humensis (De Buen, 1953) (Pisces—Atherinidae)
Author(s) -
Santos E. A.,
Vinagre A. S.
Publication year - 1991
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/j.1095-8649.1991.tb04359.x
Subject(s) - biology , glycogen , embryogenesis , larva , period (music) , carbohydrate metabolism , ontogeny , embryo , medicine , endocrinology , human fertilization , glycogen synthase , zoology , fishery , ecology , anatomy , acoustics , physics
Changes in glucose and glycogen concentrations during embryonic and larval development of Odonthestes humensis (De Buen, 1953) (Pisces—Atherinidae) were followed. Glycogen decreased immediately after fertilization but remained constant throughout the embryonic period, suggesting that although present glycogenolisis may not be the most important energetic pathway during this period. Glucose levels only show a significant increase on the fifth day of development coincident with the beginning of heart activity. In fed larvae glycogen utilization increases during development, resulting in an increase in glucose concentration. Such a pattern does not occur in starved animals, where glycogen and glucose are present respectively at high and low concentrations similar to embryos. The change of pattern seems to be associated with the first larval feeding.