Details

Autor(en) / Beteiligte

• de Campos, Bruno Ribeiro
• Kracizy, Rafael Ortiz
• Furtado, Plinio Schmidt
• Zadinelo, Izabel Volkweis
• Ballester, Eduardo Luis Cupertino

Titel

Effects of ammonia and nitrite on food consumption of the Amazon River prawn Macrobrachium amazonicum (Heller, 1862) postlarvae

Ist Teil von

• Latin american journal of aquatic research, 2021-09, Vol.49 (4), p.684-688

Ort / Verlag

Valparaiso: Pontificia Universidad Catolica de Valparaiso

Erscheinungsjahr

2021

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• Experiments were carried out to study the effects of ammonia and nitrite on food consumption of Macrobrachium amazonicum postlarvae. Postlarvae (average weight of 0.0625 g) were exposed during 21 days to four concentrations of total ammonia (0, 1.05, 2.1 and 4.2 mg. NH3+NH4+L-1) and four concentrations of nitrite (0, 0.075, 0.15 and 0.30 mg N-NO2-L-1). After the exposure period, six prawns per treatment were maintained individually in 250 mL experimental units to analyze the food consumption as a function of the amount of food offered and the leftovers during a 24 h period. The food consumption presented significant alterations for prawns exposed to all nitrite concentrations and at concentrations of twice the recommended safety level for total ammonia. According to the results obtained, high concentrations of total ammonia and nitrite affect the food consumption of M. amazonicum adversely, influencing the species performance in culture systems.