The effect of dietary vitamin E on the pleopodal egg and stage-1 juvenile numbers of freshwater crayfish Astacus leptodactylus (Eschscholtz, 1823)

Harlıoğlu, Muzaffer Mustafa; Barim, Özden

doi:10.1016/j.aquaculture.2004.01.022

Cited by 22 publications

(33 citation statements)

References 20 publications

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“…Triplicate groups of crayfish (9 individuals per group) were randomly assigned to each feeding treatment. The carapace length (mm) and weight (g) Barim, 2004).…”

Section: Experimental Protocolmentioning

confidence: 99%

“…The only native crayfish species in Turkey, A. leptodactylus is widely distributed in lakes and ponds in many parts of the country. It is also known as Turkish, Galicia, swamp or pond crayfish (Harlioglu, 2004). Moulting occurs in all arthropods, from insects to crustaceans, it is essential for growth, reproduction and metamorphosis.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have indicated that there are relationships between vitamin E and arginase, and between arginase and selenium (Erisir et al, 2003). The determined amounts of vitamin E have been supplemented to diets to increase pleopodal egg number in crayfish, to modulate the antioxidant defense system and to provide optimum growth in prawn (Harlioglu and Barim., 2004, Dandapat et al, 2000, He and Lawrence, et al, 1993.…”

Section: Introductionmentioning

confidence: 99%

“…This species has commercial importance in Turkey and were exported to a number of European countries until 1986. The production of A. leptodactylus after 1985 decreased dramatically (from 5000 tons annually to 200 tons) in most Turkish lakes as a result of the crayfish plague, over-fishing, water pollution and water withdraws for agricultural irrigation (Harlioglu and Barim, 2004;Barim, 2005). For these reasons, crayfish, especially broodstocks have to be fed with good quality diet for growth, production and reproduction.…”

Section: Introductionmentioning

confidence: 99%

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Benzer¹,

Özçelik²,

Yıldırım³

2016

Turk. J. Fish. Aquat. Sci.

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The effects of dietary antioxidants (vitamine E, vitamine C, Astaxhantin, β carotene) on arginase activity and nitric oxide levels of hepatopancreas and muscle of freshwater crayfish (Actacus leptodactylus) were investigated during moulting.150 mg kg -1 vitamine E (VE), 200 mg kg -1 vitamine C (VC), 200 mg kg -1 Astaxhantin and 200 mg kg -1 β carotene were added to experimental diets. A. leptodactylus with these diets were fed with 2% of their total weight daily, in a day during 75 days. Arginase activity was increased in muscle of crayfish fed the diets VC, VE, astaxanthin and β karoten but in hepatopancreas arginase activity was increased with β carotene when compared to control. NO levels in muscle were decreased when compared to control but this decrease was not statically significant. NO levels in hepatopancreas of crayfish fed the diets VC and astaxanthin were higher than control groups. Our results demonstrated that dietary antioxidants affect the arginase activity and nitric oxide level of freshwater crayfish (Astacus leptodactylus, Esch. 1823) during moulting. A. leptodactylus 75 gün boyunca bu diyetler ile toplam ağırlığının 2% oranında beslendi. Kontrol ile kıyaslandığında Arjinaz aktivitesi kerevit kasında VC, VE, astaxanthin ve β karoten ile artmıştır ancak hepatopankreasda arjinaz aktivitesi β karotene ile artmıştır. Kas NO seviyeleri kontrolle kıyaslandığında azalmıştır ama bu azalış istatistiksel olarak önemli değildir. VC ve astaxanthin ile beslenen kerevit hepatopankreasından NO düzeyleri kontrol gruplarına göre daha yüksek bulunmuştur. Sonuçlarımız diyetsel antioksidanların kerevitlerin kabuk değiştirme döneminde arjinaz aktiviteleri ve NO düzeylerini değiştirdiğini kanıtlamıştır.

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“…Triplicate groups of crayfish (9 individuals per group) were randomly assigned to each feeding treatment. The carapace length (mm) and weight (g) Barim, 2004).…”

Section: Experimental Protocolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Untitled

Benzer¹,

Özçelik²,

Yıldırım³

2016

Turk. J. Fish. Aquat. Sci.

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“…The interaction between vitamins E and C can take place not only in homogenous solutions, but also in liposomal membrane systems in which vitamins E and C reside separately within and outside the membranes (5,6). Several authors have investigated the individual effects of supplementation and deficiency of vitamin E or vitamin C on growth and immune response in fishes (7,8,9,10). However, very little is known about the combined effect of dietary vitamins E and C on growth, reproduction and immune response (11,12) in fish.…”

Section: Introductionmentioning

confidence: 99%

Effects of Optimum Vitamin E with Different levels of Vitamin C on Growth, Reproduction and Immune Response in Blue Gourami (Trichogaster trichopterus)

2017

ELSR

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The effect of optimum level of vitamin E (300 mg kg⁻¹ diet) and various levels vitamin C (50, 100, 200 and 300 mg kg⁻¹ diet) on growth, reproduction and leucocytes count were studied in blue gourami (Trichogaster trichopterus) for 120 days. Test fish fed with the optimum vitamin E + 200 mg vitamin C kg⁻¹ diet enhanced the chosen feeding and growth parameters, reproduction and disease resisting leucocytes count (lymphocyte and monocyte) than those fed with other diets. The control fish spawned only once with less number of eggs spawn⁻¹, while other groups spawned two times with more number of eggs spawn⁻¹ during the experiment. The female blue gourami fed with the optimum vitamin E laid 450 eggs in two spawning and it significantly (P < 0.01) enhanced to 570 eggs in two spawning fish fed with the optimum vitamin E and 200 mg vitamin C kg⁻¹ diet respectively. However, the fish treated with other combinations laid less number of eggs than the above combinations. Lymphocyte and monocyte counts revealed that the fish fed with combination of optimum vitamin E and vitamin C diet produced more or less equal effects. The experiment revealed that vitamin C and vitamin E are the growth and reproduction promoting factors respectively and they interact with one another when these two nutrients are available simultaneously.

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The effect of darkness on mating and pleopodal egg production time in a freshwater crayfish, Astacus leptodactylus Eschscholtz

Harlıoğlu

Duran

2009

Aquacult Int

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In the present study, the effect of darkness on the timing of mating and pleopodal egg production in Astacus leptodactylus was investigated. Crayfish were exposed to three different light regimes: natural day light regime (control, mean 10.04-h light/13.96-h dark); 24-h dark (24 h D); 8-h light/16-h dark (8 L:16 D). Experiments were carried out between November 2006 and January 2007 with 36 males and 144 females. The results showed that darkness did not have an effect on the onset of mating and pleopodal egg production in the groups, but it did affect significantly the timing of individual matings; the higher percentage of ovigerous females in the darkness group at the first observation means that on average females under this condition mated and spawned earlier than in the other groups (P \ 0.01). The percentage of ovigerous females exposed to constant darkness in the first observation in which crayfish started to mate and spawn was 62.50. These figures for those exposed to 16 D:8 L and control were 43.75 and 37.50%, respectively. Therefore, it can be concluded that the reproduction efficiency (i.e., rate of ovigerous females) of A. leptodactylus can be enhanced under controlled conditions by exposing broodstock to constant darkness in their mating and spawning season.

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The effect of dietary vitamin E on the pleopodal egg and stage-1 juvenile numbers of freshwater crayfish Astacus leptodactylus (Eschscholtz, 1823)

Cited by 22 publications

References 20 publications

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Effects of Optimum Vitamin E with Different levels of Vitamin C on Growth, Reproduction and Immune Response in Blue Gourami (Trichogaster trichopterus)

The effect of darkness on mating and pleopodal egg production time in a freshwater crayfish, Astacus leptodactylus Eschscholtz

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