Some methodological approaches to the definition of limiting density for aquaculture of freshwater crayfish fingerlings

Golubev, A. P.; Alekhnovich, A. V.; Bodilovskaya, O. A.; Anilkumar, Gopinathan

doi:10.1007/s10499-016-0065-2

Cited by 3 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Density is one of the key parameters to take into account to maximize the return of investment during culture. Overcrowding leads to a decrease in growth rates (Liu et al, 2014;Golubev et al, 2016), or an increase prevalence of diseases (Noga, 2010). Low density would denote that the system has not reached its full potential.…”

Section: Introductionmentioning

confidence: 99%

Density and gender segregation effects in the culture of the caridean ornamental red cherry shrimp Neocaridina davidi Bouvier, 1904 (Caridea: Atyidae)

Vazquez

Colpo

Sganga

et al. 2017

Journal of Crustacean Biology

View full text Add to dashboard Cite

The effect of density on growth, sex ratio, survival, and biochemical composition of the red cherry shrimp, Neocaridina davidi Bouvier, 1904, was studied to determine optimum rearing conditions in this ornamental species. It was tested whether gender segregation affected growth and survival of the species. To test the effect of density (Experiment 1), hatched juvenile shrimp were kept at three different densities: 2.5, 5, and 10 individuals l-1 (D 2.5 , D 5 and D 10 , respectively). To test the effect of gender segregation (Experiment 2), 30-day juveniles were reared in three conditions: culture with only females, culture with only males, and mixed culture (females: males 1:1) at 5 individuals l-1 density. Experiments lasted 90 days, and shrimp were weighted either every 30 days (Experiment 1) or 15 days (Experiment 2). At day 90, females kept at D 2.5 weighted 45% more than females stocked at D 10 (P < 0.05), whereas females from D 5 did not differ from those of other densities (P > 0.05). Males at D 2.5 weighted 29% more than D 5 and D 10 (P < 0.05). Survival was high and unaffected by treatment. Sexual differentiation did not differ among treatments. Females from D 2.5 had the lowest lipid and protein content, which would occur if they had a higher spawning. Males from D 2.5 had higher content of proteins, probably due to their larger size. Gender segregation had no effect over growth and survival; females grew up to a larger size than males both in monosex and mixed culture. It was shown that given to their non-aggressive behavior, N. davidi is tolerant to a highdensity condition, which makes it feasible as an ornamental species.

show abstract

Section: Introductionmentioning

confidence: 99%

Density and gender segregation effects in the culture of the caridean ornamental red cherry shrimp Neocaridina davidi Bouvier, 1904 (Caridea: Atyidae)

Vazquez

Colpo

Sganga

et al. 2017

Journal of Crustacean Biology

View full text Add to dashboard Cite

show abstract

“…Earlier, we showed that the specific growth rate of Astacus leptodactylus before the age of 3 to 3.5 months decreases linearly with increasing planting density [12]. In the present paper, the results of our laboratory experiments have been processed through computational means, so as to bring out a mathematical expression that could be used as a tool for assessing the initial stocking density for the desired output.…”

Section: Introductionmentioning

confidence: 99%

The Experience of Perennial Growing Up of Fingerlings of Noble Crayfish Astacus Astacus for Aquaculture Needs

Golubev¹,

Alekhnovich²,

Bodilovskaya³

et al. 2022

JBSU Ecology

Self Cite

View full text Add to dashboard Cite

The method of accelerated artificial rearing in aquaculture of Astacus astacus fingerlings in climatic conditions of Belarus has been elaborated. Initially, newborn A. astacus larvae were reared from early July to early October (summer period) in open-air trays at temperatures 12-25 °C. In successive winter period (early October - early April) grown up individuals were reared in aquaria in a heated room at temperatures 18-20 °C. The average weight of specimen at the end of summer period decreased from 392 to 265 mg with the increase of final stocking density from 6 to 54 ind/m-2. The average weight of individuals at the end of winter rearing changed irregularly from 688 mg to 939 mg within the final density gradient 58-122 ind/m-2. It is close to similar data for juveniles in natural reservoirs at the end of the first and second summer of their life. The equation between geometric mean (N, ind/m-2) of density on the whole period of rearing and average body weight (W, mg) for individuals aged 3.5-4 months calculated from the results of present investigations and the relevant literature data as follows: W = 424-1034gN. A similar equation for individuals aged 9-10 months after winter rearing is follows: W= 1376-278-lgN. These equations provide an alternative in aquaculture strategy to produce more juveniles with lower body weight or fewer larger ones. Generally, the introduction of 9-month-old A. astacus into ponds makes it possible to obtain specimens of marketable weight (~10 g) in Belarus at the age of two years, or one-two years earlier than those in natural reservoirs. The maximal initial density (No) of rearing in aquaculture of newborn larvae A. astacus and specimen at the age Nu 3-4 months can be calculated according to the equation: No= -7^, where Nlim is the density of individuals at the end of period of rearing calculated from the above equations at which their weight will correspond to those for individuals in natural reservoirs at the end of their first or second summer of their life; S - survival of individuals in aquaculture expressed in fraction of unity. According to this equation, No for the first and second age groups are 423 and 33 ind/m-2 respectively.

show abstract

Stocking density affects culture performance and economic profit of adult all-female Chinese mitten crabs (Eriocheir sinensis) reared in earthen ponds

Zhang,

Jiang,

Zhou

et al. 2024

Aquaculture

View full text Add to dashboard Cite

Some methodological approaches to the definition of limiting density for aquaculture of freshwater crayfish fingerlings

Cited by 3 publications

References 16 publications

Density and gender segregation effects in the culture of the caridean ornamental red cherry shrimp Neocaridina davidi Bouvier, 1904 (Caridea: Atyidae)

Density and gender segregation effects in the culture of the caridean ornamental red cherry shrimp Neocaridina davidi Bouvier, 1904 (Caridea: Atyidae)

The Experience of Perennial Growing Up of Fingerlings of Noble Crayfish Astacus Astacus for Aquaculture Needs

Stocking density affects culture performance and economic profit of adult all-female Chinese mitten crabs (Eriocheir sinensis) reared in earthen ponds

Contact Info

Product

Resources

About