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Separating the respiration rates of embryos and brooding females of Daphnia magna: Implications for the cost of brooding and the allometry of metabolic rate
Author(s) -
Glazier Douglas S.
Publication year - 1991
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1991.36.2.0354
Subject(s) - respiration , daphnia magna , biology , brood , embryo , respiration rate , daphnia , allometry , zoology , metabolic rate , ecology , anatomy , crustacean , fishery , endocrinology , toxicity , medicine
Rates of oxygen consumption were measured in eggs, embryos, and neonates, as well as in adults of Daphnia magna with or without their broods. There was no detectable energetic cost of carrying a brood, and there was no apparent effect of brooding on the respiration of eggs and 1–2‐d‐old embryos. The respiration rates of eggs and early embryos were only about a third of those of neonates and adults and thus accounted for very little respiration in brooding females.