نتایج جستجو برای: larvae rearing
تعداد نتایج: 42083 فیلتر نتایج به سال:
This experiment was carried out to examine the effect of temperature on egg incubation period, exogenous feeding onset, growth and survival of the zebra cichlid , Cichlasoma nigrofasciatum larvae with two replications. Experiment was conducted in four groups of brood stocks with Four temperatures with two replications 22-24 °C, 24-26 °C, 26-28 °C and 28-30 °C. After ovulation brood stocks were ...
An attempt was made to rear the eri silkworm, Philosamia ricini on leaves of caster and reared under laboratory condition. It observed that is a primary potential host silkworm. The growth parameters cocoon characters silkworm were normal. successfully lasted its life cycle ranged from 38 40 days. effective rate rearing, weight pre-spinning larvae, cocoon, shell pupae 70 75 per cent, 6 7 g, 3.0...
Litopenaeus vannamei (Boone, 1931) post-larvae 12 were obtained from Bushehr province and reared at the Caspian Sea Ecological Research Iinstitute (Mazandaran, Iran) in summer 2012 using brackish water of the Caspian Sea. Prior to start of the experiment, post-larvae were gradually adapted to brackish water. The shrimp was stocked in a 1000 m2 earthen pond with a stocking density of 31 individu...
the eggs and larvae of the indian meal moth, plodia interpunctella (hübner), are widely used in mass rearing of parasitoids and predators. feeding indices and some biological parameters of p. interpunctella were studied on bran of different wheat cultivars ('back-cross roshan', 'khooshe pishgam', 'khoshki line 9', 'arg', 'alvand', 'pishtaz', 'ws-89-2', 'sepahan' and 'bam') when incorporated int...
This study was conducted to confirm the possible use of female Yangwonjam as a host for synnemata production of Isaria tenuipes in eight local areas in Korea. Silkworm pupation rate, infection rate and synnemata characteristics of I. tenuipes were examined. Normal silkworms had a higher pupation rate than silkworms inoculated with I. tenuipes. The pupae survival percentage of normal silkworm in...
numerous species of insects have been recorded from various types of manure in commercially reared birds from different parts of the world. this study was carried out to determine parasitic beetle populations in commercial rearing house litter from different regions of the west azerbaijan province in iran. atotal of 60 samples of litter were collected from june 2008 to november 2009 from 20 pou...
Growth and physiology were compared in giant gourami (Osphronemus goramy) larvae reared constant (25, 30, 35 °C) daily fluctuating (25–35 temperature regimes. Larvae aged eight days post-hatching indoors for 21 four closed recirculating systems (four aquaria per system) the different Samples of collected every week from each regime growth measurements. At end experiment, cortisol glucose concen...
An experiment to observe the growth performance of the larvae produced from female Clarias batrachus treated with 4 dietary levels of vitamin E viz. 0 mg, 50 mg, 100 mg, and 200 mg /kg feed was conducted for 28 days. After rearing for 3 months females were used for induction of breeding to produce larvae. Same dose of pituitary gland (100 mg PG/kg body weight) was used for all treatments. From ...
Artificial honeybee queen bee rearing is an important part of beekeeping because it helps to re-queen colonies on a regular basis, reduces swarming, increases honey production, number colony. The study aim determine the success rate emergence from artificially grafted larvae in various cup sizes, grafting concentrated and diluted condition with without bee. general, sealing was 70-73%, 53-61% 3...
Climate variability influences seabird population dynamics in several ways including access to prey near colonies during the critical chick-rearing period. This study addresses breeding success in a Barents Sea colony of common guillemots Uria aalge where trophic conditions vary according to changes in the northward transport of warm Atlantic Water. A drift model was used to simulate interannua...
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