Spawning of calanoid copepod Acartia tonsa at low temperature and high salinity improves hatch success for cold-stored egg production

Torres, Gustavo A.; Merino, Germán E.; Prieto-Guevara, Martha; Portillo, John E. Acosta; Gamboa, Jesús H.; Imués, Marco Antonio; Chapman, Frank A.

doi:10.1016/j.aquaculture.2020.735725

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…Most copepods exhibit tolerance to salinity changes, which may or may not be related to their osmoregulation capacity (Gaudy et al, 2000;Peck et al, 2015;Dutz & Christensen, 2018). Other studies have also reported the in uence of these two parameters on the production of the species, such as spawning, survival, the rate and percentage of hatching of eggs, and population growth (Chen et al, 2006;Milione andZeng, 2008, Ohs et al, 2010;Torres et al, 2021), which directly occur in their production processes.…”

Section: Discussionmentioning

confidence: 99%

“…It also had the best average daily egg production at 25‰ and 30‰ (32 ± 1 and 34 ± 2 female eggs − 1 day − 1, respectively). Torres et al, (2021), identi ed the in uence of temperature and salinity during the spawning of copepod A. tonsaa to improve the survival of cold-stored eggs. The authors reported a better hatching rate of eggs stored for 2 and 4 weeks at low temperatures and high salinity, corresponding to 18°C and 30‰ with a hatching percentage of 58% and 73% respectively.…”

Section: Discussionmentioning

confidence: 99%

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Effect of temperature and salinity on in-vitro population growth of copepode Oithona (Copepoda: Cyclopoidae). Temperature-salinity Oithona culture

Lambraño,

Forero

2023

Preprint

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The marine copepods culture has been considered a great resource for feeding in marine aquaculture. Oithona is the most abundant genus in the oceans and that is why they are the largest contributors of live prey in fish larvae. The present study aimed to identify the influence of temperature and salinity on the population growth of Oithona sp. under laboratory conditions. Copepods were cultivated (n: 15 ind/200 ml in three experimental temperatures: 21, 26, 31°C and in three salinities: 20, 30, and 40‰), which were monitored and adjusted daily. Copepods were fed based on a microalgae culture Isochrysis sp. at a continuous density of 600.000 cel/ml. for 15 days. At the end of the experiment, Oithona sp presented significant statistical differences (p < 0.05), in population growth, with a higher population density at 40‰ (8.040 ± 6.265.2 ind/ 200ml), at a temperature of 31°C. Also, it was shown that the variable salinity alone did not influence the population growth of the copepod, while, if it was related to the water temperature, it presents statistically significant differences (p < 0.05), in all possible combinations. We concluded that Oithona sp. can be well adapted to higher temperature and salinity conditions in which the optimal salinity and temperature variables rate is 31°C and 40‰ to reach a higher development. These conditions improve the rate of reproduction, population growth, and its development in culture.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of temperature and salinity on in-vitro population growth of copepode Oithona (Copepoda: Cyclopoidae). Temperature-salinity Oithona culture

Lambraño,

Forero

2023

Preprint

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“…Among the most frequently studied are the calanoids Acartia spp. [ 11 , 12 , 13 ], Calanus spp. [ 14 , 15 , 16 ], the cyclopoids Oithona spp.…”

Section: Introductionmentioning

confidence: 99%

Influence of Microalgae Diets on the Biological and Growth Parameters of Oithona nana (Copepoda: Cyclopoida)

Huanacuni

Pepe-Victoriano

Lora‐Vilchis

et al. 2021

Animals

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Several species of the planktonic free-living genus Oithona have been successfully used in the larviculture of marine fish and shrimp. However, few studies have been published that allow us to estimate the potential of Oithona nana culture under controlled conditions. This work evaluated the effect of the microalgae Isochrysis galbana and Chaetoceros calcitrans as single (200,000 cells/mL) and mixed diets (100,000 + 100,000 cells/mL) on population and individual growth, ingestion rate, number of spawnings, fertility, development time by stage, and sex ratio of O. nana. We cultured this copepod at 28 ± 0.5 °C, 35 PSU salinity, 125 lux, and 12:12 photoperiod. Results showed that diet had no effect on the final population level (6273–7966 ind/L) or on individual growth, nor on sex ratio, with less males than females. With C. calcitrans, O. nana had a higher filtration rate (57 ng C/ind/day). On the other hand, a mixed diet induced a higher number of spawns (0.4 events/day) and nauplii per spawn (23 ind). Similarly, a single or mixed diet, containing I. galbana, accelerated the development rate by 6.33–7.00 days. We concluded that O. nana can be cultured with both microalgae, indicating its potential use in an intensive system for production. However, more research is required to improve the productivity of O. nana rearing.

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Continuous egg separation of the copepod Acartia tonsa. Implications for increasing adult density at an intensive level

Torres

Merino

Prieto-Guevara

2022

Aquaculture Reports

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Spawning of calanoid copepod Acartia tonsa at low temperature and high salinity improves hatch success for cold-stored egg production

Cited by 4 publications

References 33 publications

Effect of temperature and salinity on in-vitro population growth of copepode Oithona (Copepoda: Cyclopoidae). Temperature-salinity Oithona culture

Effect of temperature and salinity on in-vitro population growth of copepode Oithona (Copepoda: Cyclopoidae). Temperature-salinity Oithona culture

Influence of Microalgae Diets on the Biological and Growth Parameters of Oithona nana (Copepoda: Cyclopoida)

Continuous egg separation of the copepod Acartia tonsa. Implications for increasing adult density at an intensive level

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