Comparative energetics during early development of two marine fish species, Solea senegalensis (Kaup) and Sparus aurata (L.)

2001 ◽  
Vol 204 (12) ◽  
pp. 2175-2183 ◽  
Author(s):  
G. Parra ◽  
M. Yúfera
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Marine Fish ◽  
Specific Growth ◽  
Sparus Aurata ◽  
Energy Content ◽  
Experimental Period ◽  
Solea Senegalensis ◽  
Ingestion Rates ◽  
Respiration Rates

SUMMARY Growth, energy content, ingestion and respiration rates and energetic efficiencies were measured in the larvae of two marine fish (Solea senegalensis and Sparus aurata) whose eggs have a similar diameter (approximately 1mm) and energy content (approximately 1J), but whose larvae reach a quite different mass after the first month of life. Experiments were carried out in populations reared under the same conditions in the laboratory during the first month after hatching. Solea senegalensis grow from hatching to the start of metamorphosis (approximately day 14) at twice the rate of Sparus aurata (specific growth rate for Solea senegalensis 0.25μgday−1; specific growth rate for Sparus aurata 0.12μgday−1). The tissues in Solea senegalensis larvae accumulated energetic reserves that were used during metamorphosis, which occurred during the third week after hatching. Ingestion and respiration rates differed in the two species during the experimental period. Although Solea senegalensis continued eating during metamorphosis, the specific ingestion rates decreased during the process. Nevertheless, no great differences in specific ingestion rates and rates of oxygen consumption were observed when comparing the same larval mass range. Larvae of both species showed an allometric relationship between respiration rate and biomass. The energetic efficiencies calculated in the present study denoted different metabolic patterns in each species. In Solea senegalensis, the energy used for growth increased progressively during the larval (pelagic) period and then, from the first signs of metamorphic transformation, remained almost constant. In this species, the energy allocated to growth was greater than that allocated to metabolic processes. Sparus aurata invested less energy in growth than in metabolic processes and displayed a constant energy allocation throughout the experimental period. During the first month after hatching, Solea senegalensis always allocated more energy for growth than did Sparus aurata.

scholarly journals Tambatinga juveniles performance in a recirculation aquaculture system with different stocking densities

2020 ◽  
Vol 9 (5) ◽  
pp. e178953317 ◽  
Author(s):  
Rebeca Maria Sousa ◽  
Romério Rodrigues dos Santos Silva ◽  
Anália Sousa dos Santos ◽  
Camila Vieira da Silva ◽  
João Avelar Magalhães ◽  
...  
Keyword(s):  
Growth Rate ◽  
Weight Gain ◽  
Specific Growth Rate ◽  
Specific Growth ◽  
Stocking Density ◽  
Field Research ◽  
Experimental Period ◽  
Feed Conversion ◽  
Significant Difference ◽  
Final Survival

In a quantitative field research, the objective of this work was to determine the best stocking density for tambatinga juveniles (Colossoma macropomum × Piaractus brachypomus) in a recirculation system during 50 days of cultivation. Tambatinga juveniles (0.72±0.02 g) were distributed in 0.08 m3 polyethylene boxes with densities of 5, 10 and 15 fish/box, with five replicates per treatment. During the experimental period, water quality, weight gain, apparent feed conversion, specific growth rate, carcass yield, proximate composition and final survival were evaluated. The water parameters remained stable and in the desired range for the species during the experimental period (temperature 25±1.52° C, pH 5.85±0.7 and dissolved oxygen 6.51±0.05 mg L-1). Statistical analyzes showed no significant difference for apparent feed conversion and survival rate. The lowest stocking density (5 fish/box) showed greater weight gain and specific growth rate, while the density of 10 fish/box showed high lipid deposition in the carcass. Aiming at greater weight gain and better specific growth rate, the results indicated that the density of 5 fish/box (0.08 m3), is the most suitable for juveniles of this species.

scholarly journals Feed demand behavior in sea bass juveniles: Effects on individual specific growth rate variation and health (inter-individual and inter-group variation)

Aquaculture ◽  
2008 ◽  
Vol 274 (1) ◽  
pp. 87-95 ◽  
Author(s):  
S. Millot ◽  
M.-L. Bégout ◽  
J. Person-Le Ruyet ◽  
G. Breuil ◽  
C. Di-Poï ◽  
...  
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Specific Growth ◽  
Sea Bass ◽  
Rate Variation ◽  
Group Variation

scholarly journals Control of the specific growth rate of Bacillus subtilis for the production of biosurfactant lipopeptides in bioreactors with foam overflow

2010 ◽  
Vol 45 (11) ◽  
pp. 1800-1807 ◽  
Author(s):  
S. Chenikher ◽  
J.S. Guez ◽  
F. Coutte ◽  
M. Pekpe ◽  
P. Jacques ◽  
...  
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Specific Growth Rate ◽  
Specific Growth

E-beam irradiation affects the maximum specific growth rate ofBacillus cereus

2012 ◽  
Vol 48 (2) ◽  
pp. 382-386 ◽  
Author(s):  
Juan Aguirre ◽  
Mª Rosa Rodríguez ◽  
Rodrigo González ◽  
Gonzalo García de Fernando
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Specific Growth ◽  
Maximum Specific Growth Rate ◽  
Beam Irradiation ◽  
Ofbacillus Cereus

Specific growth rate of Chlamydomonas reinhardtii and Chlorella sorokiniana under medium duration light/dark cycles: 13–87 s

1999 ◽  
Vol 70 (1-3) ◽  
pp. 323-333 ◽  
Author(s):  
Marcel Janssen ◽  
Tjibbe Chris Kuijpers ◽  
Bram Veldhoen ◽  
Michel Brik Ternbach ◽  
Johannes Tramper ◽  
...  
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Chlamydomonas Reinhardtii ◽  
Specific Growth ◽  
Chlorella Sorokiniana

scholarly journals Growth and hematology of pacu subjected to sustained swimming and fed different protein levels

2013 ◽  
Vol 48 (6) ◽  
pp. 645-650 ◽  
Author(s):  
Cleujosí da Silva Nunes ◽  
Gilberto Moraes ◽  
Fernando Fabrizzi ◽  
Araceli Hackbarth ◽  
Gustavo Alberto Arbeláez-Rojas
Keyword(s):  
Growth Rate ◽  
Weight Gain ◽  
Specific Growth Rate ◽  
Dietary Protein ◽  
Crude Protein ◽  
Specific Growth ◽  
Daily Weight Gain ◽  
Mean Corpuscular Hemoglobin ◽  
Protein Levels ◽  
Randomized Design

The objective of this work was to evaluate the effect of sustained swimming and dietary protein levels on growth and hematological responses of juvenile pacu (Piaractus mesopotamicus). A completely randomized design was used in a 3x2 factorial arrangement, with three levels of dietary protein (24, 28, and 32% crude protein), two rearing conditions (sustained swimming or motionless water), and 15 replicates. Fish were subjected to sustained swimming at the velocity of two body lengths per second (2 BL s-1), for 45 days. The level of dietary protein and the swimming conditions affected the performance, growth, and hematological profile of pacu. Swimming conditions influenced nutritional factors, increasing daily weight gain, specific growth rate, number of erythrocytes, mean corpuscular volume, and mean corpuscular hemoglobin. Fish under sustained swimming and fed with 24% crude protein showed better growth performance, with higher specific growth rate (4.11±0.88) and higher daily weight gain (2.19±0.47 g per day). Sustained swimming can increase the productive performance of pacu and simultaneously reduce dietary protein levels.

scholarly journals ANALISIS KARAKTER REPRODUKSI DAN PERFORMA BENIH HIBRID IKAN NILA PANDU F6 DENGAN IKAN NILA NILASA (Oreochromis niloticus) Analysis of the Character Reproduction and Seed Hybrid Performance 0f Tilapia Fish F6 Pandu with Nilasa Tilapia (Oreochromis niloticus)

2017 ◽  
Vol 12 (1) ◽  
pp. 19
Author(s):  
Dio Patria Yustysi ◽  
Fajar Basuki ◽  
Titik Susilowati ◽  
Tristiana Yuniarti
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Oreochromis Niloticus ◽  
Egg Size ◽  
Specific Growth ◽  
Fish Farming ◽  
Hatching Rate ◽  
Feed Conversion

ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh dari hibridisasi ikan nila Pandu F6 dengan nila Nilasa terhadap karakter reproduksinya dan performa benih yang dihasilkan. Penelitian ini dilakukan dengan metode eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 kali ulangan. Perlakuan dalam penelitian ini: perlakuan A (Pandu F6 ♀><Pandu F6 ♂), B (Nilasa ♀><Nilasa ♂), C (Pandu F6 ♀>< Nilasa ♂), dan D (Nilasa ♀><Pandu F6 ♂). Data yang diamati meliputi fekunditas, daya tetas telur, diameter dan bobot telur, panjang dan bobot larva TL, panjang dan bobot larva lepas kuning telur, kelulushidupan, laju pertumbuhan spesifik, konversi pakan dan kualitas air. Hasil penelitian menunjukan nilai terbaik pada fekunditas sebesar 1191,67 ± 239,45 butir/200 g, daya tetas telur sebesar 80,93 ± 3,90%, kelulushidupan sebesar 81,55 ± 7,54%, laju pertumbuhan spesifik sebesar 7,26 ± 0,25, konversi pakan 0,54 ± 0,02 didapatkan pada perlakuan C, akan tetapi untuk diameter dan bobot telur, panjang dan bobot larva Kuning Telur, dan panjang dan bobot larva lepas kuning telur tidak berbeda nyata. Hasil tersebut menunjukan bahwa hibridisasi (perlakuan C) memberikan pengaruh yang nyata (P < 0,05) terhadap fekunditas, daya tetas telur, kelulushidupan, laju pertumbuhan spesifik, dan konversi pakan tetapi tidak berpengaruh terhadap diameter dan bobot telur, panjang dan bobot larva, dan panjang dan bobot larva lepas kuning telur. Kata kunci: Hibridisasi, Ikan Nila, Karakter Reproduksi, Performa Benih  ABSTRACT This research aims to know the influence of hybridization tilapia fish Pandu F6 with nila Nilasa against the character of the reproduction and seed performance. This research was conducted with the experimental method using Random Design complete (RAL) with 4 treatments and three replicates. The treatments in this study: the treatment A (Pandu F6 F6 ♀ >< Pandu ♂), B (Nilasa ♀>< Nilasa ♂), C (Pandu F6 ♀>< Nilasa ♂), and D (Nilasa ♀ >< Pandu F6 ♂). The observed data covering fecundity, hatching rate, egg size, yolk sack larva length and weight, length and weight of the egg yolk off larvae, survival rate, specific growth rate, feed conversion rate, and water quality. The results showed the best value on the fecundity of 1191.67±239.45 eggs/200 g, Hatching rate 80.93 ± 3.90%, Survival rate of 81.55 ± 7.54%, specific growth rate of 7.26 ± 0.25, conversion fodder 0.54 ± 0.02 obtained at the treatment C, but for the diameter and weight of egg, larval length and weight TL, and the length and weight of the yolk egg off larvae for each treatment do not differ markedly. The results showed that hybridization (treatment C) gives a real influence (P < 0.05) of fecundity,hatching rate, survival rate but not with the egg size, larva weight and length, and the length and weight of larvae off yolk. Water quality on the spawning, hatching eggs and larvae found on the maintenance of a decent range for tilapia fish farming Keywords: hybridization, tilapia fish, character of the reproduction, seed performance 

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