Effect of stocking density on growth, maturity, fecundity, reproductive behaviour and fry production in the mouth brooding cichlid Oreochromis mossambicus (Peters)

Shubha, M. R.; Reddy, Sarjapur R.

doi:10.5897/ajb11.697

Cited by 4 publications

(3 citation statements)

References 26 publications

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“…The GSI represents the relationship between the gonad weight and body weight, and is more suitable than absolute gonad weight as an indicator of maturity in male fish (H erstgen ӧ -Schwark & Langholz, 1998). The GSI of male O. mossambicus varies between 0.35 to 0.92% (Shubha & Reddy, 2011). According to Bhatta et al (2012) male O. mossambicus usually have their highest GSI of up to 1% of the body weight during the spawning season.…”

Section: Influence Of Pawpaw Seed Meal On Reproductive Parametersmentioning

confidence: 99%

Hormonal Profile and Reproductive Parameters of Pre-vitellogenic Mozambique tilapia (Oreochromis mossambicus) on Pawpaw (Carica papaya) Seed Meal

Omeje¹,

Lambrechts²,

Brink³

2019

JAS

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The use of phytochemicals to control precocious maturation and indiscriminate spawning among tilapia species is an important issue in aquaculture. This study investigated the influence of pawpaw (Carica papaya) seed meal on the reproductive performance, and the sex hormone profile of sexually immature Mozambique tilapia (Oreochromis mossambicus). Pawpaw seed meal (PSM) were included in a tilapia commercial diet (basal diet) at an inclusion level of 0 PSM, 10 PSM and 30 PSM g/kg of the basal diet (BD), respectively, and fed to immature O. mossambicus for a period of 30 and 60 days, respectively. Enzyme-linked immune-sorbent assay (ELISA) procedures were used to quantify the plasma levels of 17β-estradiol and 11-ketotestosterone. The inclusion of PSM did not affect the growth and survival rate of the O. mossambicus. The plasma levels of 11-ketotestosterone did not differ among the treatment groups. The 17β-estradiol levels of female fish that received 30 PSM g/kg BD for 60 days were significantly lower (p < 0.05) than the levels reported for females that were not fed the PSM. In females, the PSM reduced the gonad weight, GSI, fecundity and egg diameter of fish. The study concludes that pawpaw seed meal affected the reproductive function of the female O. mossambicus though the changes were reversible.

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Section: Influence Of Pawpaw Seed Meal On Reproductive Parametersmentioning

confidence: 99%

Hormonal Profile and Reproductive Parameters of Pre-vitellogenic Mozambique tilapia (Oreochromis mossambicus) on Pawpaw (Carica papaya) Seed Meal

Omeje¹,

Lambrechts²,

Brink³

2019

JAS

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“…Research also has been conducted using a relatively semi-intensive culture system (ponds and floating cages). Chakraborty & Banerjee (2010), Shubha &Reddi (2011), andAragón-Flores et al (2014), are some of the few studies in which a low stocking density causes a negative performance, the latter reporting an acute case of aggressiveness. The detection of an adequate stocking density helps optimize production systems, generating quality products, resulting in good profitability for the producer.…”

Section: Introductionmentioning

confidence: 99%

Short-tailed pipefish (Microphis brachyurus) juvenile culture: effect of stocking density on growth, survival and condition factor

Martínez‐Cárdenas

Hernández-Cortez

Castañeda-Chávez³

et al. 2022

Lat. Am. J. Aquat. Res.

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The present study aimed to test the effect of three stocking densities: 100, 200, and 300 ind m-3 (D100, D200, and D300, respectively) on survival, growth (weight and total length), and condition factor of Microphis brachyurus. At the end of the six-week trial, there were no significant differences in the fish's survival, growth, and condition. The results suggest that this species presents high adaptability under culture conditions. A suboptimal stocking density generates a suboptimal use of infrastructure and decreases the production system's profitability. Based on the present study, a stocking density of 300 ind m-3 is recommended to increase the aquaculture infrastructure's profitability for ornamental or conservation purposes.

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“…La tilapia a 50 peces/m 3 muestra mayor peso final y tasa de crecimiento específico que a mayores densidades (7) y entre 100 y 450 peces/m 3 no se afecta el crecimiento y el rendimiento (8,9,10). En O. mossambicus el incremento de 429 a 1716 peces/m 3 ocasiona disminución del crecimiento por la jerarquía social que provoca que los peces pequeños no se alimenten debido a la dominancia de los más grandes (11).…”

Section: Introductionunclassified

Crecimiento y supervivencia de Cryphiops caementarius en cocultivo con Oreochromis niloticus a diferentes densidades

Mogollón-Calderón

Avalos

2021

Rev MVZ Córdoba

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Objetivo. Evaluar el crecimiento y la supervivencia de Cryphiops caementarius en cocultivo con Oreochromis niloticus a diferentes densidades. Materiales y métodos. Se utilizaron camarones machos (5.86 cm y 7.65 g) y alevines revertidos de tilapia (5.65 cm y 2.61 g). Se emplearon nueve acuarios (55 L). En cada acuario se instalaron seis recipientes donde se sembró un camarón por recipiente (32 camarones/m2) y en el agua restante se sembraron tilapias a 100, 200 y 300 alevines/m3. Se empleó alimento balanceado. La ración diaria para camarones fue del 6% y para tilapia fue del 5% de la biomasa total. El experimento duró 90 días. Resultados. En el camarón, la longitud (6.46 cm), peso (9.37 g), las ganancias porcentuales en longitud (10.01% a 10.45%) peso (19.24% a 25.41%), y la supervivencia (88.89% a 94.44%) fueron similares (p<0.05) entre tratamientos. El efecto del síndrome de muerte por muda es discutido. En tilapia, la longitud (9.25 cm), peso (12.90 g), tasa de crecimiento absoluto (0.040 cm/día; 0.114 g/día), tasa de crecimiento específica (0.55% longitud/día; 1.759% peso/día) y la ganancia porcentual (64.21%; 389.48%) fueron mayores (p<0.05) a 100 y 200 alevines/m3. La supervivencia de tilapia fue similar (86.11%) entre tratamientos. Conclusiones. El crecimiento y la supervivencia del camarón fueron afectados por el síndrome de muerte por muda, más no por la presencia de tilapia en el sistema. En cambio, mayor crecimiento de tilapia se obtuvo con 100 alevines/m3 y la supervivencia fue similar entre tratamientos.

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Effect of stocking density on growth, maturity, fecundity, reproductive behaviour and fry production in the mouth brooding cichlid Oreochromis mossambicus (Peters)

Abstract: Growth and reproductive performance of Oreochromis mossambicus (Peters) in relation to

Cited by 4 publications

References 26 publications

Hormonal Profile and Reproductive Parameters of Pre-vitellogenic Mozambique tilapia (Oreochromis mossambicus) on Pawpaw (Carica papaya) Seed Meal

Hormonal Profile and Reproductive Parameters of Pre-vitellogenic Mozambique tilapia (Oreochromis mossambicus) on Pawpaw (Carica papaya) Seed Meal

Short-tailed pipefish (Microphis brachyurus) juvenile culture: effect of stocking density on growth, survival and condition factor

Crecimiento y supervivencia de Cryphiops caementarius en cocultivo con Oreochromis niloticus a diferentes densidades

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