Anthelmintic activity of essential oil of Ocimum gratissimum Linn. and eugenol against Haemonchus contortus     

Pessoa LM  Morais SM  Bevilaqua CM  Luciano JH 《Veterinary parasitology》2002,109(1-2):59-63

The ovicidal activity of the essential oil of Ocimum gratissimum Linn. (Labideae) and its main component eugenol was evaluated against Haemonchus contortus, gastrointestinal parasite of small ruminants. The oil and eugenol were diluted in Tween 20 (0.5%) at five different concentrations. In the egg hatch test, H. contortus eggs were obtained from feces of goats experimentally infected. At 0.50% concentration, the essential oil and eugenol showed a maximum eclodibility inhibition. These results suggest a possible utilization of the essential oil of O. gratissimum as an aid to the control of gastrointestinal helmintosis of small ruminants.  相似文献   

Induction of Systemic Acquired Resistance in Pepper Plants by Acibenzolar-S-methyl against Bacterial Spot Disease   总被引：9，自引：0，他引：9  

Roberto Buonaurio  Luciano Scarponi  Mery Ferrara  Paola Sidoti  Angelo Bertona 《European journal of plant pathology / European Foundation for Plant Pathology》2002,108(1):41-49

The ability of acibenzolar-S-methyl to induce resistance in pepper plants against Xanthomonas campestris pv. vesicatoria was investigated in both growth chamber and open field conditions. Growth chamber experiments showed that acibenzolar-S-methyl (300M) treatment protects pepper plants systemically and locally against X. campestris pv. vesicatoria. Evidence for this was a reduction in the number and diameter of bacterial spots and bacterial growth in planta. Systemic protection was also exerted by the acibenzolar-S-methyl acid derivative, CGA 210007, which may be produced by hydrolysis in the plant. The efficacy of acibenzolar-S-methyl was also found in open field conditions, where both leaves and fruit were protected from the disease. The highest efficacy (about 67%) was obtained by spraying the plants 6–7 times every 8–12 days with a mixture of acibenzolar-S-methyl and copper hydroxide (2.5 + 40ghl^–1 active ingredient). Persistence and translocation data obtained from the growth chamber experiments revealed a persistence of acibenzolar-S-methyl lasting five days after treatment with rapid translocation and negligible levels of acid derivative formation. Since the protection exerted by acibenzolar-S-methyl against bacterial spot disease was observed when the inducer was completely degraded, it would appear to be due to SAR activation.  相似文献   

金色的生活     

Christiana Victoria Luciano  刘苏甲 《经济动物学报》2008,(1)

Elizabeth Anne是个充满活力、爱玩的美国女孩。今年是她在高中的最后一年。每天放学回家,她都盼望着跟她的金毛巡回猎犬——多克一起做作业。三年前,Elizabeth家养了多克,从那一天起多克就成为一家人生活中不可缺少的一份子。多克是他们养的第二只金毛巡回猎犬,因为自从养了金毛她家人就爱上了这个品种,所以决定再要一只。Elizabeth也说,她太爱金毛巡回猎犬了,这种狗不仅喜欢与人亲近而且十分顽皮有趣。家里有多克真是一件幸福的事!而对于多克——这个家庭的一员,同样享受着与Elizabeth以及她的家人在  相似文献   

Calhoun的新生     

Christiana Luciano  李铭 《经济动物学报》2008,(5)

什么是 Catahoula 呢?正确的犬种名称是 Calhoun thecatahoula,这是在美国路易斯安那教区命名之后才出现在当地的犬种。尽管 Catahoula 猎犬的原产地是路易斯安那州,但是 Calhoun 却来自于佛罗里达州,本来是一只救生犬。Calhoun 的第一任主人曾经极其虐待它,所以当它的现任主人 Karla 在一家宠物商店见到它,并弯腰抚摸它时,Calhoun 凑上去亲了亲她的脸颊。就从那一刻起,Calhoun和 Karla 就毫无反悔地认定他们本就应该在一起。  相似文献   

贝蒂     

Christina Luciano  刘苏甲 《经济动物学报》2008,(3)

贝蒂是只六岁大的狗。2005年10月 Kayla 和 Doug 救了它,因为感情的逐步加深,随后收养了它。两人对贝蒂的身世知之甚少,只晓得它原来的主人是个根本不懂得照顾贝蒂的年轻人。因为它有着一双漂亮的眼睛,让人想起女明星 Bette Davis,所以就给它取了这个名字:贝蒂。它身材丰满,乍一看好像应该减肥,其实一抱便知,那可都是肌肉啊。贝蒂有极其敏锐的听觉,什么动静都逃不过它的耳朵。举个例子吧,每天早上贝蒂都要去散步。如果  相似文献   

Characterization of Open-Pollinated Maize Varieties from Rio Grande do Sul State     

Barros  Lílian Moreira  Prochnow  Daiane  de Oliveira  Victoria Freitas  da Silva  Airton Rosa  de Oliveira  Antonio Costa  da Maia  Luciano Carlos 《Journal of Crop Science and Biotechnology》2019,22(1):31-36

Journal of Crop Science and Biotechnology - The morphological characterization allows one to estimate and evaluate the genetic distance among different varieties, identifying heterotrophic groups...  相似文献   

Evolution of Carotenoids,Sensory Profiles and Volatile Compounds in Microwave-Dried Fruits of Three Different Loquat Cultivars (Eriobotrya japonica Lindl.)     

Farina  Vittorio  Cinquanta  Luciano  Vella  Francesco  Niro  Serena  Panfili  Gianfranco  Metallo  Antonio  Cuccurullo  Gennaro  Corona  Onofrio 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(2):200-207

Plant Foods for Human Nutrition - The consumption of loquat fruits is highly appreciated for their carotenoid content and valuable sensory notes, but it is limited due to the low shelf-life. An...  相似文献   

Haematological and oxidative stress responses in Piaractus mesopotamicus under temperature variations in water     

Daniel Pinto  Lucas Pellegrin  Lilian Fiori Nitz  Sílvio Teixeira da Costa  Jos Maria Monserrat  Luciano Garcia 《Aquaculture Research》2019,50(10):3017-3027

In this study, the influence of temperature variation on the blood and oxidative stress parameters of pacu Piaractus mesopotamicus juveniles was evaluated. Fish were subjected to gradual changes of temperature, over 5 days, by 24°C until reaching to experimental temperatures 18, 21, 24 (control), 27 and 30°C. There were significant differences (p < .05) in glucose and lactate of blood in both the haematological relationships and oxidative stress parameters. Glucose levels increased at 30°C and decreased at 21°C. Lactate levels were highest at 18°C. While the haematocrit was higher at all altered temperatures, haemoglobin levels decreased at 21°C and increased at 30°C, causing alterations in haematimetric indices. In the liver, glutathione‐S‐transferase (GST) activity was reduced at 18°C while antioxidant capacity against peroxyl radicals (ACAP) was highest at 30°C. Thiobarbituric acid reactive substances (TBARS) increased at 18, 21 and 27°C. In the muscle, ACAP decreased at 27 and 30°C and TBARS increased at 30°C. The results indicate that the species shows sensitivity to temperature variations. Accordingly, we conclude that with short‐term temperature variations >3°C, it is possible to induce higher alterations in the observed parameters in pacu juveniles.  相似文献   

Daily rhythms of cortisol and glucose and the influence of the light/dark cycle on anaesthesia in Nile tilapia (Oreochromis niloticus): Does the timing of anaesthetic administration affect the stress response?     

Leandro Santos Costa  Felipe Guedes de Araújo  Renan Rosa Paulino  Luciano Jos Pereira  Edgar Junio Damasceno Rodrigues  Paula Adriane Perez Ribeiro  Priscila Vieira Rosa 《Aquaculture Research》2019,50(9):2371-2379

Although daily variations in drug pharmacokinetics have been reported for a variety of teleost species, the influence of this daily variation on the cortisol response following anaesthesia remains poorly understood. To address this, two experiments were performed. The first experiment described the daily patterns of cortisol and glucose secretion in tilapia (Oreochromis niloticus). The second experiment investigated how the timing of anaesthetic administration (specifically at mid‐light [ML] or at mid‐dark [MD]) affects the induction and recovery times and plasma cortisol and glucose levels of juvenile Nile tilapia exposed to benzocaine, clove oil or tricaine methanesulphonate (MS‐222). The results revealed that the effect on the stress response associated with the moment when anaesthesia took place (ML or MD) varied according to the treatment (p < 0.05). Cortisol levels were significantly higher at ML for MS‐222 (ML = 116.23 ± 25.55; MD = 48.25 ± 22.33 ng/dl) (p < 0.05) and clove oil (ML 59.73 ± 14.27; MD 38.26 ± 12.07 ng/dl) (p < 0.05), whereas no significant differences were found between ML and MD cortisol levels for the control treatment (ML = 72.91 ± 18.42; MD = 64.80 ± 10.68 ng/dl) (p > 0.05) or in the benzocaine‐treated group (ML = 38.7 ± 4.90; MD = 38.60 ± 3.69 ng/dl) (p > 0.05). The highest plasma cortisol level in ML was found in the MS‐222‐treated group. All the tested anaesthetics had similar cortisol levels at MD (p > 0.05).  相似文献   

Artificial structures as tools for fish habitat rehabilitation in a neotropical reservoir     

Luciano N. Santos  Francisco G. Araújo  Daniel S. Brotto 《水产资源保护:海洋与淡水生态系统》2008,18(6):896-908

• 1. Since most of the natural habitats critical for freshwater fish survival have been adversely affected by human disturbance, the effectiveness of artificial structures in providing new and suitable habitats for fish has been increasingly investigated.
• 2. This paper evaluates the role of artificial structures as fish habitat in a structureless 30 km² Brazilian reservoir, through underwater surveys conducted monthly from April 1999 to March 2000.
• 3. In total, 5759 fish in nine species were recorded, but only three cichlid species—one native, Geophagus brasiliensis and two non‐native, Cichla kelberi and Tilapia rendalli—showed consistent association with the artificial habitats, suggesting that this family reacts to submerged structures.
• 4. The absence of fish at control sites compared with high occurrences in sites provided with a physically complex structure suggests that artificial structures can play an important ecological role for cichlids smaller than 150 mm TL, probably related to shelter and/or feeding benefits.
• 5. The level of structural complexity and position in the water column influenced fish use of artificial structures. C. kelberi was associated with highly complex structures, whereas moderately complex bottom structures were more effective in harbouring G. brasiliensis. Bottom structures are apparently more important than midwater structures in harbouring T. rendalli, but structural complexity seemed to play a secondary role.
• 6. This study is the first in demonstrating that adding complex artificial structures can expand habitats for small fish (<150 mm TL), especially cichlids, in a neotropical impoundment. It seems reasonable to expect that deploying physically complex structures in other oligotrophic, structureless and cichlid‐dominated impoundments in Brazil will lead to similar results to those found in this work.

Copyright © 2008 John Wiley & Sons, Ltd.  相似文献