scholarly journals PLANNING ON HATCHING TIME OF GROUPER EGGS THROUGH DIFFERENT INCUBATION TEMPERATURES

2010 ◽  
Vol 2 (2) ◽  
Author(s):  
Regina Melianawati ◽  
Philip Teguh Imanto ◽  
Made Suastika
Keyword(s):  
Embryonic Development ◽  
Incubation Time ◽  
Incubation Temperature ◽  
The Body ◽  
Development Pattern ◽  
Hatching Rate ◽  
Optimum Temperature ◽  
Hatching Time ◽  
Tiger Grouper ◽  
Lower Temperature

Groupers were known as a high economically marine commodity and in order to support groupers production, the seed availability was the most important. Eggs are still as limited factor in hatchery production, for this reason the success of eggs transportation is one as base of successful production of seed. Planning on hatching time of eggs through different incubation temperature was an option to solve that problem. This experiment was aimed to find out the optimum temperature for groupers eggs and the minimum temperature to arrange incubation time and to plan the hatching time. Fertilized eggs were incubated into three beaker glasses of 1 liter in volume with the density of ± 250 eggs/liter. The incubation was done under laboratory condition at controlled temperature, i.e. (A) 21-22 ºC, (B) 24-25 ºC, (C) 27-28 ºC and (D) 30-31 ºC. The eggs that used were including orange spotted grouper (Epinephelus coiodes), brown marbled grouper (E. microdon), tiger grouper (E. fuscoguttatus) and humpback grouper (Cromileptes altivelis). Investigated variables were embryonic development pattern, incubation time and hatching rate. The result showed that the eggs incubated in temperature range of 24-31°C had the normal sequence of embryonic development pattern, but in temperature of 21-22°C performed irregular sequence and the embryonic development stopped at blastula or gastrula stage or even the eggs could still develop but the body of hatched larvae were abnormal. In lower temperature incubation, the incubation time was longer and the hatching rate of eggs was lower than those in higher temperature. Therefore the optimum temperature for incubation of orange spotted grouper, marbled grouper, tiger grouper and humpback grouper eggs ranged between 24-31 ºC, while the lowest possible temperature was 24 ºC.Keywords: incubation temperature, embryonic development pattern, grouper eggs, hatching rate

scholarly journals PLANNING ON HATCHING TIME OF GROUPER EGGS THROUGH DIFFERENT INCUBATION TEMPERATURES

2010 ◽  
Vol 2 (2) ◽  
Author(s):  
Regina Melianawati ◽  
Philip Teguh Imanto ◽  
Made Suastika
Keyword(s):  
Embryonic Development ◽  
Incubation Time ◽  
Incubation Temperature ◽  
The Body ◽  
Development Pattern ◽  
Hatching Rate ◽  
Optimum Temperature ◽  
Hatching Time ◽  
Tiger Grouper ◽  
Lower Temperature

<p>Groupers were known as a high economically marine commodity and in order to support groupers production, the seed availability was the most important. Eggs are still as limited factor in hatchery production, for this reason the success of eggs transportation is one as base of successful production of seed. Planning on hatching time of eggs through different incubation temperature was an option to solve that problem. This experiment was aimed to find out the optimum temperature for groupers eggs and the minimum temperature to arrange incubation time and to plan the hatching time. Fertilized eggs were incubated into three beaker glasses of 1 liter in volume with the density of ± 250 eggs/liter. The incubation was done under laboratory condition at controlled temperature, i.e. (A) 21-22 ºC, (B) 24-25 ºC, (C) 27-28 ºC and (D) 30-31 ºC. The eggs that used were including orange spotted grouper (Epinephelus coiodes), brown marbled grouper (E. microdon), tiger grouper (E. fuscoguttatus) and humpback grouper (Cromileptes altivelis). Investigated variables were embryonic development pattern, incubation time and hatching rate. The result showed that the eggs incubated in temperature range of 24-31°C had the normal sequence of embryonic development pattern, but in temperature of 21-22°C performed irregular sequence and the embryonic development stopped at blastula or gastrula stage or even the eggs could still develop but the body of hatched larvae were abnormal. In lower temperature incubation, the incubation time was longer and the hatching rate of eggs was lower than those in higher temperature. Therefore the optimum temperature for incubation of orange spotted grouper, marbled grouper, tiger grouper and humpback grouper eggs ranged between 24-31 ºC, while the lowest possible temperature was 24 ºC.</p><p>Keywords: incubation temperature, embryonic development pattern, grouper eggs, hatching rate</p>

scholarly journals Reproductive strategy, egg characteristics and embryonic development of Greenland halibut (Reinhardtius hippoglossoides)

2012 ◽  
Vol 70 (2) ◽  
pp. 342-351 ◽  
Author(s):  
Rosario Domínguez-Petit ◽  
Patrick Ouellet ◽  
Yvan Lambert
Keyword(s):  
Embryonic Development ◽  
Reproductive Strategy ◽  
Biochemical Composition ◽  
Incubation Temperature ◽  
Life Stage ◽  
Early Life Stage ◽  
Greenland Halibut ◽  
Hatching Time ◽  
Greenland Halibut Reinhardtius Hippoglossoides ◽  
Reinhardtius Hippoglossoides

Abstract Domínguez-Petit, R., Ouellet, P., and Lambert, Y. 2013. Reproductive strategy, egg characteristics and embryonic development of Greenland halibut (Reinhardtius hippoglossoides). – ICES Journal of Marine Science, 70: 342–351. Despite the commercial importance of Greenland halibut (GH), important gaps exist in our knowledge of the reproductive and early life stage biology for this species. The present study examined through laboratory experiments the spawning strategy, realized fecundity, egg characteristics, biochemical composition, and embryonic development of GH. The results confirmed the hypothesis that GH is a single-batch spawner producing large eggs, resulting in low realized fecundity. Embryonic development and hatching time are highly dependent on incubation temperature; 50% hatching occurred after 46, 30, and 24 days at 2, 4, and 6°C, respectively. Few changes in the biochemical composition of the eggs are observed during embryonic development. Newly hatched larvae are not well developed, having a large yolk sac, no pigmentation and incomplete development of the jaws. Egg specific density confirmed the mesopelagic distribution of the eggs at sea. However, important buoyancy changes occurring in the last 3–4 days before hatching indicate that larvae hatch higher in the water column. These results are important for understanding advection and dispersion processes of GH eggs and larvae and the connectivity between spawning grounds and nursery areas.

scholarly journals The influence of difference temperature against the rate of embryonic development and larval abnormality of Cantik Grouper (Epinephelus sp.)

2019 ◽  
Vol 2 (1) ◽  
pp. 16
Author(s):  
Aprisianus Julkarman Simbolon ◽  
Ganjar Adhywirawan Sutarjo ◽  
Hariyadi Hariyadi
Keyword(s):  
Low Temperature ◽  
Embryonic Development ◽  
Incubation Temperature ◽  
Temperature Treatment ◽  
Optimum Temperature ◽  
Long Time ◽  
Epinephelus Fuscoguttatus ◽  
Low Levels ◽  
Difference Temperature ◽  
F 31

Cantikgrouper is the hybridization results grouper or cross-breeding between Epinephelus fuscoguttatus as a female and Epinephelus microdon as a male. The main barriers faced in the development of this commodity is still low levels of spawning up to seeding grouper. Based on the background, this study aimed to investigate optimum temperature observations against the rate of embryonic development Epinephelus sp.larvae. This study used the results of artificial spawning eggs.The fertilized eggs were incubated on six pieces of the container temperature treatment;each treatment there was repeated three times.The incubation temperature was kept on (A) 21-22°C; (B) 23-24°C; (C) 25-26°C; (D) 27-28°C; (E) 29-30°C; (F) 31-32°C. Results showed that eggswere incubated at a temperature of 21-22 ℃ embryonic development to a halt in the blastula, and temperature 23-24°C stalled on phasemyomere embryos. The low-temperature incubation period lasts a long time. Temperature 25-26°C needed 18 hours 6 minutes by 8.33% abnormality rate. Temperature 27-28°C needed 16 hours to hatch witha degree of abnormality of 7.6%. Temperature 29-30°C needed 15 hours 1 minute for the hatch tothe degree of abnormality of 5.33%. The 31-32°C temperature needed 14 hours 6 minutes to hatch witha degree of abnormality of 17.3%. The limits of tolerance for the incubation of the eggs ofcantik grouper (Epinephelusspp.) were 26-32°C.The best temperature of each treatment were obtained at a temperature of 29-30°C. Based on our results, it concluded that the changing temperature affected how long eggs could hatch.

Thermal influence on the embryonic development and hatching rate of the flameback pygmy angelfish Centropyge aurantonotus eggs

Zygote ◽  
2019 ◽  
Vol 28 (1) ◽  
pp. 80-82
Author(s):  
Raoani Cruz Mendonça ◽  
Sarah Pittigliani Ikebata ◽  
Sérgio Leandro Araújo-Silva ◽  
João Vitor Azevedo Manhães ◽  
Mônica Yumi Tsuzuki
Keyword(s):  
Embryonic Development ◽  
Incubation Temperature ◽  
Abiotic Factors ◽  
Environmental Parameters ◽  
Hatching Rate ◽  
Influence Of Temperature ◽  
Different Temperatures ◽  
Influence Of Temperature On ◽  
Thermal Influence ◽  
Hatching Rates

SummaryThe flameback pygmy angelfish Centropyge aurantonotus, highly appreciated and valued by the aquarium market, is heavily harvested and traded. Temperature is one of the abiotic factors that has the most influence on fish development, especially in the early stages of life. For captive production, it is essential to know the appropriate environmental parameters for each species. In this sense, this study aimed to evaluate the influence of temperature on the embryonic development and hatching rates of C. aurantonotus incubated at six different temperatures (20, 22, 24, 26, 28, 30°C). Embryonic development events were very similar in terms of morphological and chronological characteristics compared with other species of the genus Centropyge. Incubation time was inversely proportional to temperature. The treatment at 22°C required twice the time of that required by 30°C treatment for hatching to occur. The best incubation temperature range was 24–28°C. Values below 22°C and at 30°C showed lower hatching rates compared with other treatments. Based on these results, the recommended temperature at which to incubate C. aurantonotus eggs is between 24–28°C.

scholarly journals The Embryonic Develompent and Hatching Rate of Cantang Grouper (Epinephelus fuscoguttatus, Forskall 1775 x Epinephelus lanceolatus, Bloch 1790)

2020 ◽  
Vol 3 (2) ◽  
pp. 304
Author(s):  
Albet Surya Kembara ◽  
Putri Desi Wulan Sari
Keyword(s):  
Embryonic Development ◽  
Production Process ◽  
Hatching Rate ◽  
Development Phase ◽  
Maintenance Period ◽  
Epinephelus Fuscoguttatus ◽  
Tiger Grouper ◽  
Production Value ◽  
Hatching Eggs ◽  
Technological Opportunities

Cantang grouper is a grouper species produced from the hybridization of Kertang grouper and Tiger grouper.  The hybridization,besides increasing species diversification, also has the prospect of cultivation that has the opportunity to increase fishery production in the future. The technique of maintaining grouper larvae needs to be known to be able to increase the production value of the grouper larvae and create technological opportunities in the production process. The embryonic development phase of cantang grouper egg consists of multicellular phase, blastula, gastrula, separation of the tail from the egg sac,  the movement of embryo, internal organ formation and the hatching eggs. During the two months maintenance period, the Hatching Rate (HR) larvae were found to be 80%.

scholarly journals Utilization Efficiency of Yolk Egg on Maanvis (Pterophyllum scalare) Embryos and Larvae in Different Incubation Temperatures

2007 ◽  
Vol 4 (1) ◽  
pp. 57 ◽  
Author(s):  
T. Budiardi ◽  
W. Cahyaningrum ◽  
I. Effendi
Keyword(s):  
Growth Rate ◽  
Incubation Time ◽  
Egg Yolk ◽  
Utilization Efficiency ◽  
Hatching Rate ◽  
Larval Rearing ◽  
Optimum Temperature ◽  
Egg Hatching ◽  
Incubation Temperatures ◽  
Pterophyllum Scalare

<p>This study was performed to determine the efficiency of yolk egg utilization in embryos and larvae, hatching rate, incubation time to hatch, and growth rate of maanvis (<em>Pterophyllum scalare</em>) larvae incubated at room remperature, 27<sup>o</sup>C, and 30<sup>o</sup>C.  Results of study showed that yolk egg utilization efficiency of embryos and larvae incubated at 30<sup>o</sup>C was 73.70% and 0,18%, respectively, and no different with that of room and 27<sup>o</sup>C incubation temperatures.  Hatching rate of eggs incubated at 30<sup>o</sup>C (84.75%) was also same with that of other treatments.  However, incubation time to hatch (27.41 hours) was shorter than that of other treatments.  The growth rate by length of larvae (2.16%) and survival rate (75.28%) incubated at 30<sup>o</sup>C was also higher compared with that of other treatments.  Thus, in general, optimum temperature for egg hatching and larval rearing of maanvis was 30<sup>o</sup>C.</p> <p>Keywords: maanvis, <em>Pterophyllum scalare</em>, egg yolk, larvae, embryo, temperature</p> <p> </p> <p>ABSTRAK</p> <p>Penelitian ini dilakukan untuk mengetahui efisiensi pemanfaatan kuning telur pada embrio dan larva, derajat penetasan, lama inkubasi telur hingga menetas, dan laju pertumbuhan serta kelangsungan hidup larva ikan maanvis (<em>Pterophyllum scalare</em>) yang diinkubasi pada suhu ruang, 27<sup>o</sup>C dan 30<sup>o</sup>C.  Hasil penelitian menunjukkan bahwa nilai efisiensi pemanfaatan kuning telur bila diinkubasi pada suhu 30<sup>o</sup>Csebesar 73,70% pada fase embrio dan 0,18% pada fase larva, dan tidak berbeda dengan suhu ruang dan 27<sup>o</sup>C.  Demikian juga dengan derajat penetasan telur  (84,75%) tidak berbeda dengan perlakuan lainnya.  Sementara itu, lama inkubasi telur hingga menetas (27,41 jam) lebih cepat dibandingkan dengan suhu inkubasi perlakuan lainnya. Demikian juga dengan laju pertumbuhan panjang (2,16%) dan kelangsungan hidup larva (75,28%) lebih tinggi dibandingkan dengan perlakuan lainnya. Dengan demikian, secara umum suhu optimal untuk penetasan dan pemeliharaan larva ikan maanvis adalah 30°C.</p> <p>Kata kunci: ikan maanvis, <em>Pterophyllum scalare</em>, kuning telur, larva, embrio, suhu</p>

scholarly journals Mortality of Metopolophium dirhodum (Homoptera: Aphididae) caused by strains of Erynia neoaphidis (Entomophthorales: Entomophthoraceae) from Slovakia and Greece

2010 ◽  
Vol 40 (No. 2) ◽  
pp. 54-62 ◽  
Author(s):  
M. Eliašová ◽  
B. Papierok ◽  
Ľ. Cagáň
Keyword(s):  
Life Cycle ◽  
Incubation Period ◽  
Incubation Time ◽  
Incubation Temperature ◽  
Metopolophium Dirhodum ◽  
Erynia Neoaphidis ◽  
The Third ◽  
Different Temperatures ◽  
Lower Temperature ◽  
Length Of Life

The aim of the study was to test isolates of <I>Erynia neoaphidis</I> originating from Slovakia and Greece for infectivity to <I>Metopolophium dirhodum</I>, and evaluate selected strains for their infectivity at different temperatures. For alatae, an LC<SUB>50</SUB> (number of spores/mm<SUP>2</SUP>) from 109.97 to 230.90 was calculated for the Slovakian strain and of 218.9 for the Greek strain. For apterae, the LC<SUB>50</SUB> was 82.2–194.5 for the Slovakian strain and 367.2 for the Greek strain. The temperature during the incubation period influenced mortality and length of life cycle of the fungus. Lower temperature decreased the mortality and extended the incubation time. With the Slovakian strain and at 22°C, the highest proportion of individuals killed by the fungus was recorded on the third day of incubation (47.8% of the alatae and 49.9% of the apterae), while at 11°C most individuals died on the seventh day (55% and 37.5% of alatae or apterae, respectively). With the Greek strain and at 22°C, the highest proportion of individuals killed was recorded on the fourth day of incubation (40.6% of alatae and 57.9% of apterae). A lower incubation temperature (11°C) prolonged the life cycle and most apterae killed by this strain were recorded on the ninth day (35%), while the highest proportion of killed alatae was recorded on the tenth day (42.8%).

scholarly journals Egg morphology, larval development and description of the oncomiracidium of Heterobothrium ecuadori (Monogenea: Diclidophoridae) parasitising the bullseye pufferfish, Sphoeroides annulatus

2011 ◽  
Vol 48 (1) ◽  
pp. 51-55 ◽  
Author(s):  
M. Grano-Maldonado ◽  
A. Roque ◽  
H. Aguirre ◽  
E. Fajer-Avila
Keyword(s):  
Embryonic Development ◽  
Survival Time ◽  
The Body ◽  
Full Description ◽  
Valuable Data ◽  
Precise Information ◽  
Mean Survival Time ◽  
Hatching Time ◽  
Egg Morphology ◽  
Time Required

AbstractThe present study is the first description of the egg morphology, embryonic development, and time required for hatching, and longevity of the oncomiracidium of Heterobothrium ecuadori (Meserve, 1938) Sproston, 1946. Experiments found that hatching time fluctuated between 7 and 10 days with a mean of 7.5 ± 1 days at 23 ± 1° C and 35 ‰. Eggs were provided with a polar filamentous appendage. The body of the oncomiracidium was flattened dorso-ventrally, 156 ± 9 μm long and 65 ± 8 μm wide. A full description of the egg development and morphology of the oncomiracidium is provided. The longevity of the oncomiracidia was 4–7 days at 21 ± 1°C, with a mean survival time of 121.8h. The ability to rear diclidophorids like H. ecuadori and to record precise information on their development provides valuable data for further studies.

scholarly journals Incubation of Oryzias woworae Eggs at Different Temperature on Embryo Development and Hatching Performance

2021 ◽  
Vol 21 (2) ◽  
pp. 315
Author(s):  
Nisa Nafiyanti ◽  
Mustahal Mustahal ◽  
Mas Bayu Syamsunarno ◽  
Muh. Herjayanto
Keyword(s):  
Incubation Temperature ◽  
Economic Value ◽  
Fish Farming ◽  
Hatching Rate ◽  
Water Medium ◽  
Optimal Temperature ◽  
Egg Incubation ◽  
Hatching Time ◽  
Hatching Eggs ◽  
Incubation Temperatures

Oryzias woworae is one of Muna Island's endemic fish, Sulawesi, which needs to be developed in cultivation and can be used as ornamental fish with high economic value. However, information on fish farming is not yet well available, especially at egg incubation temperatures. This study aims to determine the optimal temperature of the incubation water medium for the hatching performance of O. woworae eggs. The study used experimental methods with the treatment of differences in egg incubation temperatures at 24-26°C (temperature fluctuations in the laboratory), 24°C, 28°C and 32°C. The research parameters were analyzed descriptively, namely embryogenesis, hatching time, and hatching rates. The results showed that differences in incubation temperature affected the embryogenesis of O. woworae eggs. The obtained fastest time for hatching eggs O. woworae at a temperature of 32°C with six days 5 hours 49 minutes and 100% hatching. The egg incubation temperature 24-26°C is the lowest hatching time and hatching rate, nine days 11 hours 38 minutes and 53.33%. The use of 32°C in the incubation medium is the optimal temperature to accelerate embryogenesis and the hatching rate of O. woworae eggs.

scholarly journals Experimental study of the dependence of embryonic development of Trachurus trachurus eggs on temperature

2007 ◽  
Vol 65 (1) ◽  
pp. 17-24 ◽  
Author(s):  
M. Emília Cunha ◽  
Catarina Vendrell ◽  
Patrícia Gonçalves
Keyword(s):  
Experimental Study ◽  
Embryonic Development ◽  
Development Time ◽  
Incubation Temperature ◽  
Effect Of Temperature ◽  
Trachurus Trachurus ◽  
Sea Temperature ◽  
Stage 4 ◽  
Embryonic Shield ◽  
Lower Temperature

Abstract Cunha, M. E., Vendrell, C., and Gonçalves, P. 2008. Experimental study of the dependence of embryonic development of Trachurus trachurus eggs on temperature. – ICES Journal of Marine Science, 65: 17–24. To determine the effect of temperature on the development rates of artificially fertilized eggs of Trachurus trachurus, experiments were carried out at temperatures ranging from 10.5°C to 19°C. Egg development through to hatching only took place at 11.7–19°C. At lower temperature, eggs did not develop beyond the stage where the outline of the embryo was clearly discernible and a defined median line of the embryonic shield (stage 4 in this study) was apparent. Development time took from 46 h at 19°C to 126 h at 12°C. A generalized linear model of the stage-dependent development time (age) as a function of incubation temperature was developed. The data are also compared with those reported in the literature and related to sea temperature on the spawning grounds.

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