scholarly journals Monitoring the time-grade required for extrusion of oocytes reproductive from colossoma macropomum

2020 ◽  
Vol 13 (6) ◽  
pp. 57
Author(s):  
D. Sevignani ◽  
E. Buzzacaro ◽  
N. B. Fortuna
Keyword(s):  
Body Weight ◽  
Water Temperature ◽  
Strong Influence ◽  
Pituitary Extract ◽  
Artificial Reproduction ◽  
Colossoma Macropomum ◽  
Hormonal Induction ◽  
Individual Features ◽  
The Moment

The water temperature of the tanks of the breeding herds exerts a strong influence on the process of artificial reproduction. Its monitoring through the hour-degree, serves to assist in the moment to be made the extrusion of the oocytes. The objective was to monitor the time-degree that Colossoma macropomum females need after the second dose of the hormonal induction protocol, until the time of extrusion of their oocytes. The analysis was carried out at the Fish Fishery in the municipality of Sorriso-MT. Nine breeding women were submitted to the protocol of hormonal induction with pituitary extract of carp being administered in two doses. In the former, the dose of 0.5 mg / kg was used and the second dose was 5 mg / kg body weight, with an interval of 12 hours. From the second dose, the temperature in degrees centigrade of the water from the tanks was monitored hourly until the time of oocyte extrusion. Breeders had muscle tremors, swimming in circles, and were more agitated nine hours after the second dose. The oocytes had a yellowish-brown appearance, and some had individual features. The sum of the temperature of the water in hours-degree obtained was of 243. The temperature of the water did not present variation, maintaining itself at 27 ° C. It is concluded that an hour-degree is necessary for an extrusion of oocytes in some of the things you can find in Colossoma Macropomum of 243, agreeing with the limits proposed in the literature.

Analysis of the rates of development and growth of Brachymystax lenok Savinovi during artificial reproduction by the industrial method

2020 ◽  
pp. 40-49
Author(s):  
S. Assylbekova ◽  
N. Badryzlova ◽  
L. Kushnikova
Keyword(s):  
Water Temperature ◽  
Fish Reproduction ◽  
Optimal Conditions ◽  
Artificial Reproduction ◽  
Fish Products ◽  
Rate Of Development ◽  
Stage Of Development ◽  
East Kazakhstan ◽  
Brachymystax Lenok ◽  
The Moment

The article presents the results of the first research on artificial reproduction in industrial conditions of the endemic, narrow-areal subspecies of Brachymystax lenok Savinovi, which lives in lake Markakol, East Kazakhstan region. The indicators of the heat sum characteristic for each stage of development, the rate of development and growth of the Markakolsky lenok from the moment of pre-breeding to late juveniles are described. To develop technological approaches for artificial fish reproduction, one of the most important points is to determine the optimal conditions for each stage and assess the risks (loss of fish products). At the stage of insemination and transportation of eggs to the place of incubation, the loss was 50 %. The largest losses of fish products were registered during the incubation stage. The most painlessly passed the period of holding and lifting on the float, where the loss was only 3 %. When growing pre-larvae and larvae in the pool, the daily waste did not exceed 1 %. Small-sized animals that were unable to adapt to artificial feeds fell into the waste. Losses during this period amounted to 15 % of the previous stage. In General, the yield of juveniles from the moment of fertilization to the end of the experiment was 16 %. The crucial factor in the development and growth of Lenok Markakolosky is the temperature regime. For the period of embryonic development, the most favorable water temperature is 7–8 °C. From the moment of hatching, the water temperature must be increased to 10–12 °C, and the optimal temperature for the cage growing of fingerlings varies from 12 to 14 °C.

scholarly journals Induced reproduction and reproductive characteristics of Rhinelepis aspera Agassiz, 1829 (osteichthyes: Siluriformes, Loricariidae)

1998 ◽  
Vol 41 (3) ◽  
pp. 309-314 ◽  
Author(s):  
Yoshimi Sato ◽  
Nelsy Fenerich-Verani ◽  
José Roberto Verani ◽  
Hugo Pereira Godinho ◽  
Edson Vieira Sampaio
Keyword(s):  
Body Weight ◽  
Water Temperature ◽  
River Basin ◽  
Fertilization Rate ◽  
Pituitary Extract ◽  
Reproductive Characteristics ◽  
Sao Francisco River ◽  
Absolute Fecundity ◽  
São Francisco River

Rhinelepis aspera is the largest Loricariidae species found in the São Francisco river basin where it is now rarely caught. Brooders kept in tanks were hypophysed with crude carp pituitary extract (CCPE). Approximately 82% of the females responded positive to the treatment. The egg was opaque, demersal, round, yellow and adhesive. Egg stripping was done at 212 hour-degrees (= 8.2 h) after application of the second dose of CCPE (water temperature = 25-26 ºC). Hatching of the larvae occurred at 1022 hour-degrees (= 42.2 h), after fertilization of the eggs (water temperature =24-25 ºC). Fertilization rate of the eggs was 72%. Absolute fecundity (AF), initial fertility (IF) and final fertility (FF) in relation to the females' body weight are expressed, respectively, by the equations: AF = - 33993 + 122308 Wt (r² = 0.88), IF = - 14823 + 58619 Wt (r² = 0.71) and FF = - 6553 + 29741 (r² = 0.61)

scholarly journals Sperm motility and velocities of Characiformes fishes in different times post-activation

2015 ◽  
Vol 36 (6) ◽  
pp. 4023 ◽  
Author(s):  
Mônica Aline Parente Melo-Maciel ◽  
José Ferreira Nunes ◽  
João Paulo Silva Pinheiro ◽  
Larissa Teixeira Nunes ◽  
Romulo Roberto Ribeiro Pinheiro ◽  
...  
Keyword(s):  
Sperm Motility ◽  
Sperm Quality ◽  
The Other ◽  
Pituitary Extract ◽  
Colossoma Macropomum ◽  
Spermatozoa Motility ◽  
Other Hand ◽  
Hormonal Induction

The objective of the current study was to observe the performance kinetics (motilities and velocities) of the spermatozoa from Prochilodus brevis (curimatã), Colossoma macropomum (tambaqui) and Piaractus brachypomus (pirapitinga) species in different times post-activation. The sperm of P. brevis, C. macropomum and P. brachypomus species were collected after hormonal induction with carp pituitary extract. The samples with not contamination with water, urine or feces had motility subjective, morphology, osmolality and concentration analyzed. The samples selected were analyzed with Sperm Class Analyzer. Spermatozoa motility and velocities were captured at 10, 30, 60 and 120 s post-activation. No significant differences in total motility of P. brevis spermatozoa were observed between 10 s and 30 s post-activation. However, significant reduction was observed in 60 s. This reduction was more accentuated after 120 s. The same pattern of spermatozoa motility decline happened for C. macropomum and P. brachypomus. Velocities also followed the same pattern for the three species. There was significant reduction in velocities after 30 s; this reduction was more significant after 60 s. There was no significance difference between 60 s and 120 s post-activation. Sperm of C. macropomum and P. brachypomus show satisfactory sperm quality up to 60 s after activation. On the other hand, sperm of P. brevis up to 120 s after activation. These findings show that the rate of sperm motility in different times post activation is change for each species tested.

scholarly journals WATER TEMPERATURE EFFECTS ON GROWTH, FEED UTILIZATION AND SURVIVAL OF BLACK PACU (Colossoma macropomum) FINGERLINGS

2011 ◽  
Vol 20 (1-2) ◽  
pp. 15
Author(s):  
Fred William CHU-KOO ◽  
Paul Michael STEWART ◽  
Jorge L. BABILONIA-MEDINA ◽  
Carmen Rosa GARCÍA-DÁVILA ◽  
Jesse TRUSHENSKI ◽  
...  
Keyword(s):  
Water Temperature ◽  
Temperature Effects ◽  
Feed Utilization ◽  
Colossoma Macropomum

Los organismos ectotérmicos viven normalmente dentro de un rango específico de variación térmica, tanto que la vida fuera de ese rango puede ser difícil o letal. El cultivo de la gamitana Colossoma macropomum en el Perú, se haexpandido hacia áreas con distintas condiciones climáticas. En acuicultura, recientemente se han evaluado nuevos insumos y dietas balanceadas para este pez, pero existe poca información referente al efecto de las variablesmedioambientales sobre el crecimiento, alimentación y utilización de los alimentos en esta especie. Este vacío de información, limita nuestra habilidad para optimizar la ingestión y utilización apropiada de los alimentos en C.macropomum y dificulta la planificación ante escenarios futuros de cambios de temperatura. El objetivo del presente estudio fue evaluar y comparar el crecimiento, la utilización de alimentos y la sobrevivencia de alevinos degamitana criadas en tres temperaturas: 27.5, 30 y 32.5 ºC. Noventa alevinos (peso promedio de 1.38 ± 0.03 g) fueron distribuidos en grupos de 10 ejemplares y colocados dentro de nueve tanques de fibra de vidrio de 30 L devolumen. Los peces fueron sometidos a un periodo de aclimatación de 7 días previo al inicio del periodo experimental que tuvo una duración de 21 días. Los peces criados a 30 °C tuvieron niveles de peso final, ganancia de peso, tasa específica de crecimiento, tasa de conversión alimenticia y tasa de eficiencia proteica significativamente mejores que los peces de los tratamientos térmicos 27.5 y 32.5 ºC (P<0.05). No se reportaron diferencias significativas en lo referente a la ingesta de alimento, ingesta de proteínas y factor de condición. Elestudio sugiere que un incremento de temperatura puede afectar la habilidad de la gamitana de utilizar adecuadamente sus alimentos y que el cultivo de este pez a temperaturas mayores a 30 ºC puede ser limitante para la especie.

Tambaqui females (Colossoma macropomum) spawn after hormonal induction with buserelin acetate

2020 ◽  
Vol 221 ◽  
pp. 106594
Author(s):  
Andreia Regina Konzen-Freitas ◽  
Joadil Gonçalves de Abreu ◽  
Janessa Sampaio de Abreu ◽  
Vágner Luiz de Queiroz Dantas ◽  
Ruy Alberto Caetano Corrêa Filho ◽  
...  
Keyword(s):  
Colossoma Macropomum ◽  
Hormonal Induction ◽  
Buserelin Acetate

Rocking the Boat: Jonah and the New Historicism

1997 ◽  
Vol 5 (4) ◽  
pp. 364-402
Author(s):  
Yvonne Sherwood
Keyword(s):  
Body Weight ◽  
Cultural Background ◽  
The Body ◽  
New Historicism ◽  
Defining Moment ◽  
The Third ◽  
The Bible ◽  
The Moment ◽  
Critical Imagination ◽  
Lines Of Force

AbstractThis reading is about critical versions of texts and how they survive (or over-live) in the critical imagination. It looks at three readings of the book of Jonah, from 1550, 1781-2 and 1860, the first freezing the moment where Jonah is catapulted from the boat as the narrative's single defining moment, the second abstracting the image of Jonah looking out over Nineveh and snarling over God's change of mind, and the third zooming in on the body of the whale, its species, jawsize and body weight. In each case it is clear that the book of Jonah (and thus the Bible) is not hermetically sealed off from culture nor merely read against a cultural background, but that the "Bible" and "Society," text and context, are held in complex and reciprocal lines of force. The story of Jonah, the whale, God and the Ninevites is a stage where the transformed fears and anxieties of cultures are acted out, and gives back to society a transformed, idealised, picture of itself.

scholarly journals Water consumption when exposed to sun and shade for native goats in the semiarid of the State of Paraiba, Brazil

2012 ◽  
Vol 32 (1) ◽  
pp. 21-29
Author(s):  
Dermeval A. Furtado ◽  
Jackson R. de S. Leite ◽  
Jose W. B. do Nascimento ◽  
Antonio F. Leal ◽  
Andrea S. Silva
Keyword(s):  
Body Weight ◽  
Water Temperature ◽  
Water Consumption ◽  
The Other ◽  
Average Weight ◽  
The Sun ◽  
Average Water Temperature ◽  
Average Water ◽  
Sun And Shade ◽  
Average Consumption

This work aimed to evaluate the preference and water consumption of native goats in the semiarid of Brazil. The water was freely supplied, in individual buckets, one exposed to the sun and the other in the shade. The experiment was realized using 18 animals of Moxotó, Graúna and Azul breeds, with average weight of 16,6 ± 2,4 kg, kept in confinement in individual stalls equipped with feeders and drinkers, during the period from January to February of 2009. The water temperature was measured by sensors (thermocouples type T - copper/constantan), which were coupled to a system of data acquisition. It was observed that the average water temperature exposed to the sun was 29.02 ºC, and 23.85 ºC in the shade. For all breeds there was a preference for the water exposed to the sun, corresponding to an average consumption of 64.71% of the total. Among the breeds, the greatest preference for water exposed to the sun was the Azul (71.18%), followed by the Moxotó (65.95%) and the Graúna (57.00%). The animals consumed more water during the day, and the average water consumption was 1.15 grams day-1, corresponding to 6.9 % of body weight of the animals.

scholarly journals CONSERVATION OF AN ENDANGERED CARNIVOROUS FISH RITA RITA THROUGH INDUCED BREEDING

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
S Hayat ◽  
M Ramzan ◽  
M Zafarullaf ◽  
I Ahmad ◽  
Q Ali ◽  
...  
Keyword(s):  
Body Weight ◽  
Water Temperature ◽  
Fertilization Rate ◽  
Hatching Rate ◽  
Breeding Performance ◽  
Carnivorous Fish ◽  
Induced Spawning ◽  
Different Doses ◽  
Successful Production

In present study the Effects of different doses of ovaprim on induced spawning activities of Rita rita were observed with an aim to standardize the dose of ovaprim for successful breeding. In the trial experiment, the females of Rita rita were treated with ovaprim at the rate of 0.5, 0.8 and 1.0ml/kg body weight and males of Rita rita in all the cases were treated at the rate of 0.4ml/kg.  The doses of ovaprim at the rates of 0.5, 0.8, 1.0 ml/kg body weight resulted in 0%, 100% and 100% ovulation respectively. In case of injection of ovaprim at the rate of 0.8ml/kg, the fertilization rate was observed to be about 70% and hatching rate was 58%, which occurred within 20-25 hours after fertilization at water temperature of 270C-290C. In case of injection of ovaprim at the rate of 1.0ml/kg, 18% fertilization rate and 5% hatching rate was observed. The doses of ovaprim at the rates of 0.8ml/kg and 0.4ml/kg body weight for female and male Rita rita respectively was found to be satisfactory for overall breeding performance and the commercially successful production of this fish. Hatchlings from over all experiment were reared up to fingerlings size to about 2 month and were finally stocked into the Chashma lake.

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