Effects of eyestalk ablation on growth and food conversion efficiency of the freshwater prawn Macrobrachium lanchesteri (de Man)

Ponnuchamy, Raja; Reddy, S. Ravichandra; Shakuntala, Katre

doi:10.1007/bf00006391

Cited by 15 publications

(8 citation statements)

References 8 publications

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“…Sindhukumari and Pandian (1987) reported an increase of 1.1 times in food consumption by the ablated female M. nobilii. Ponnuchamy et al (1981), reported higher food conversion efficiency for unilaterally and bilaterally ablated M. lanchesteri. Venkitraman et al (2004), reported that bilateral eyestalk ablation decreased the food consumption by 21.5% than the controls and unilateral eyestalk ablation did not alter food consumption rate significantly when compared to the control prawns.…”

Section: Food Intake and Growthmentioning

confidence: 95%

“…Among the Macrobrachium species, the effects of different diets (Manik, 1976;Millikin et al, 1980), salinity (Smith et al, 1982) and water quality (Cripps and Nakamura, 1979;Menasveta, 1982) have been studied using intact M. rosenbergii. The effects of unilateral and bilateral eyestalk ablations on the food conversion efficiency of M. lanchesteri (de Man) have been reported (Ponnuchamy et al, 1981). Effects of unilateral eyestalk ablation on moulting, growth, reproduction and energy budget of M. nobilii have been documented (Sindhukumari and Pandian, 1987a).…”

Section: Introductionmentioning

confidence: 99%

“…The pH of water was maintained close to 7. Live Tubifex tubifex (Muller) worms which are known to constitute a rich source of nutrition for freshwater prawns (Ponnuchamy et al, 1981) were used as food in the present experiment. During the experimental period, water was aerated continuously.…”

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confidence: 99%

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Varalakshmi¹,

Reddy²

2010

Turk. J. Fish. Aquat. Sci.

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The effects of unilateral and bilateral eyestalk ablations on growth, ovarian maturation, carbohydrate, protein and energy contents were investigated in Macrobrachium lanchesteri (de Man). Daily growth as well as ovarian maturation were accelerated by eyestalk ablation in these prawns. The mortality in ablated prawns was more than that of intact ones. The biochemical components like carbohydrate and protein were altered by eyestalk ablations. The energy content of the different tissues were also showing some variations due to the absence of eyestalk hormones. Eyestalk ablation, especially unilateral eyestalk ablation could be used for inducing rapid growth and spawning in this particular species of freshwater prawns.Keywords: Eyestalk ablation, ovarian maturation, ovarian index, growth, energy content. Göz Sapı Kesim Yönteminin Tatlı Su Karidesinin Macrobrachium lanchesteri (de Man) Büyümesi ve Yumurtalığının (Ovarium) Olgunlaşması Üzerindeki Etkileri ÖzetMacrobrachium lanchesteri'de tek yanlı ve iki yanlı göz sapı kesim (ablasyon) yönteminin; büyüme, yumurtalığın olgunlaşması, karbonhidrat, protein ve enerji içeriğinin üzerindeki etkileri araştırılmıştır. Hem günlük büyüme hem de yumurtalık olgunluğu; bu karideslerde göz sapı kesimiyle birlikte hızlanmıştır. Kesilmiş karideslerde ölüm, intakt (kesilmemiş) olanlardan daha fazla olmuştur. Karbonhidrat ve protein gibi biyokimyasal bileşenler göz sapı kesimiyle değişmiştir. Göz sapı hormonları olmadığından, farklı dokulara ait enerji içeriği de bazı değişiklikler göstermiştir. Tatlı su karidesinin bilhassa bu türünde hızlı büyümeyi ve yumurtlamayı tetiklemek için göz sapı kesimi, özellikle de tek yanlı göz sapı kesimi kullanılabilir.Anahtar Kelimeler: Gözsapı kesimi, yumurta olgunlaşma, ovaryum indeksi, büyüme, enerji içeriği.

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Section: Food Intake and Growthmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Varalakshmi¹,

Reddy²

2010

Turk. J. Fish. Aquat. Sci.

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“…Only during this time females become detached from the exuvia, permitting copulation [17]. Studies on eyestalk removal in prawns have revealed that in some species, such as Macrobrachium lanchesteri [18] and Cryphiops caementarius [19], molt cycle time is not significantly different compared to organisms with intact eyestalks, and their reproduction rate is not improved. Conversely, in other species such as M. rosenbergii [20] and M. acanthurus [21], the molting cycle time is shortened, allowing females to produce a higher quantity of eggs over time.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Eyestalk Ablation on the Reproductive and Immune Function of Female Macrobrachium americanum

Asusena¹

2012

J Aquacult Res Dev

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Eyestalk ablation is the most common procedure used to induce crustacean reproduction in commercial hatcheries. However, other physiological and metabolic processes are affected by the removal of the X-organ sinus gland complex located in the eyestalk. In this study, the effect of unilateral eyestalk ablation on the concentration of several hemolymph metabolites, reproduction and immune function in female Macrobrachium americanum was investigated. Molting cycle time was not significantly (P=0.17) shortened in eyestalk-ablated females. However, an increased number of molts was observed in the eyestalk-ablated group because survival was significantly higher due to increased passivity and lowered aggression. As M. americanum has closed thelyca, reproduction was not accelerated after eyestalk ablation compared to control prawns. Food intake (P=0.007) and oxygen consumption (P=0.047) were both higher in eyestalk-ablated females. Concentrations of protein and glucose in hemolymph were not affected (P=0.54 and P=0.19, respectively), indicating that the demand for these metabolites was met. Glucose was metabolized by aerobic metabolism as shown by the lower lactate concentration (P=0.02) and higher respiration rate after ablation. Protein was metabolized for growth as revealed by the 100% higher growth rate in eyestalkablated females (P=0.017). Triglycerides were more highly concentrated (P=0.02) in eyestalk-ablated females. This difference was most likely due to being transported from the digestive gland to the gonad.By analyzing the immune system it was observed that only the total hemocyte count was higher (P=0.002) in eyestalk-ablated females. The protein content in hemocytes, the prophenol oxidase system and the coagulation time were not affected. In conclusion, the eyestalk ablation procedure did not cause female M. americanum to have more reproductive events over time. Despite this failure to accelerate reproduction, eyestalk ablation reduced aggression, and thus increased survival, and promoted superior growth. This result suggests that eyestalk ablation is promising for the cultivation of M. americanum.

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“…While data on absolute and relative growth in Crustaceans, including prawns, have been detailed by Hartnoll (1982), recent publications have also projected the value of deriving food energy partitioning schemes for Crustaceans (Vernberg 1987). Considerable work on the accelerating effect of eye-stalk ablation on the growth and reproduction of prawns and lobsters is also documented (Mauviot and Castell 1976;Ponnuchamy et al 1981;Quackenbush and Herrnkind 1981;Radhakrishnan and Vijayakumaran 1984a, b;Sindhu Kumari and Pandian 1987). Most of the work on freshwater prawns is however restricted tOI the riverine varieties and paucity of information on the quantification of growth in captivity of these species, leads to inconclusive analyses of their performance in the physiological energetics of food conversion.…”

Section: Introductionmentioning

confidence: 99%

Bioenergetics of feeding and metabolic cost of living in freshwater Caridean prawns

Ponnuchamy

Reddy

Shakuntala

1988

Proc. Indian Acad. Sci. (Anim. Sci.)

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The relative partitioning of food energy for processes like moulting, metabolism and growth of the freshwater prawns, Macrobrachium lanchesteri (Palaemonidae) and Caridina weberi (Atyidae) have been detailed through a bioenergetic scheme. The two species of prawns expend the same amount of food energy for the above processes. Conspecific population density inhibited growth by an overall increase in. exuvial production, metabolism and faeces production. Moult-growth relationship of Macrobrachium lanchesteri has been presented as a model for determining accurate measurements of moulting and growth of crustaceans.

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Effects of eyestalk ablation on growth and food conversion efficiency of the freshwater prawn Macrobrachium lanchesteri (de Man)

Cited by 15 publications

References 8 publications

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The Effects of Eyestalk Ablation on the Reproductive and Immune Function of Female Macrobrachium americanum

Bioenergetics of feeding and metabolic cost of living in freshwater Caridean prawns

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