Anticipation of Artemia sp. supply in the larviculture of the barber goby Elacatinus figaro (Gobiidae: Teleostei) influenced growth, metamorphosis and alkaline protease activity
| Autor: | Maria Fernanda da Silva-Souza, Mônica Yumi Tsuzuki, Juliet Kiyoko Sugai |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
QH301-705.5 media_common.quotation_subject SH1-691 Zoology Brine shrimp GC1-1581 Aquatic Science Biology Oceanography 03 medical and health sciences Aquaculture. Fisheries. Angling pez Biology (General) Metamorphosis media_common fish Teleostei Larva Hatching ornamental Live food Aquatic animal 04 agricultural and veterinary sciences endangered biology.organism_classification live food alimento vivo Fishery 030104 developmental biology aquaculture alimentación acuicultura Elacatinus figaro 040102 fisheries 0401 agriculture forestry and fisheries amenazada feeding ornamentales |
| Zdroj: | Latin American Journal of Aquatic Research, Vol 43, Iss 4, Pp 792-797 (2015) Latin american journal of aquatic research v.43 n.4 2015 SciELO Chile CONICYT Chile instacron:CONICYT |
| ISSN: | 0718-560X |
| Popis: | The barber goby Elacatinus figaro is considered endangered due to overexploitation by the ornamental industry. Farming marine ornamental fishes, especially the threatened ones, can be one of the measures to minimize the pressure on the natural stocks. Among the priority issues for their production is the determination of the most appropriate feeding management. The feeding protocol commonly used in the larviculture of barber goby, when the start of Artemia sp. offer occurred at the 18th DAH (days after hatching) (treatment T18), was modified, by anticipating brine shrimp supply in 6 days (treatment T12). Alkaline proteases activity, growth and metamorphosis of larvae were evaluated in both protocols. Juveniles at T12 showed higher weight (0.04 ± 0.001 g) and lower activity of total alkaline proteases (1.3 ± 0.2 mU mg-1 protein) compared to T18 (0.02 ± 0.001 g; 2.8 ± 0.4 mU mg-1 protein, respectively). With anticipation of brine shrimp, the commencing and end of larval transformation was observed earlier (at 24 and 34 DAH, respectively) in comparison to those with the supply of Artemia sp. at 18 DAH (27 and 41 DAH, respectively). Thus, the Artemia sp. anticipation was beneficial during the larviculture of the barber goby, considering that larvae reached metamorphosis earlier. |
| Databáze: | OpenAIRE |
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