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Caloric content of larvae of the brine shrimpArtemia salina
Kaloriengehalt von Larven des SalinenkrebsesArtemia salina
Helgoländer wissenschaftliche Meeresuntersuchungen volume 16, pages 130–135 (1967)
Kurzfassung
Der Energiegehalt frisch geschlüpfter Nauplien (5953 cal/g organische Substanz) und 2 mm langer Larven (Metanauplius IV, 5854 cal/g organische Substanz) vonArtemia salina Leach wurde mit einem Parr 1412 Bombenkalorimeter ermittelt. Ferner wurde der Einfluß verschieden langer Hungerperioden auf den Kaloriengehalt dieser Tiere untersucht. Nach 72stündigem Hungern wurden für die Nauplien 5430 cal/g organische Substanz und für die 2 mm langen Larven 5115 cal/g organische Substanz ermittelt. Der Aschegehalt der Tiere stieg mit zunehmender Dauer der Hungerperiode. Anhand des Gewichts der geschlüpften und hungernden Nauplien wurde der Kaloriengehalt einzelner Tiere bestimmt: er reicht von 0,00924 cal pro Tier (gerade geschlüpfter Nauplius) bis 0,00459 cal pro Tier (Nauplius, 96 Stunden ohne Futter).
Summary
1. Caloric contents ofArtemia salina nauplii and larvae have been determined by employing a combustion calorimetry. Freshly hatched nauplii contain on an average 5953 cal/g organic substance; the respective value for 7-day-old (2 mm long) larvae is 5854 cal/g.
2. The effect of starvation on the caloric contents was investigated. After a 72 hour starvation period, nauplii contain 5430 cal/g organic substance, 2 mm long larvae 5115 cal/g.
3. The ash contents (expressed as % of body dry weight) ofArtemia larvae increase as a function of the length of the starvation period.
4. After determining the weight of the nauplii, the caloric content of a single nauplius was calculated after different periods of starvation. It ranges from 0.00924 cal per freshly hatched nauplius to 0.00459 cal per nauplius starved for 96 hours.
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Dedicated to Professor Dr.Friedrich Krüger on his 65th birthday, August 18, 1967.
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Paffenhöfer, GA. Caloric content of larvae of the brine shrimpArtemia salina . Helgolander Wiss. Meeresunters 16, 130–135 (1967). https://doi.org/10.1007/BF01620694
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DOI: https://doi.org/10.1007/BF01620694