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Pil Birkefeldt Møller Pedersen Kasper Hansen Do Thi Thanh Houng Mark Bayley Tobias Wang 《Aquaculture Research》2014,45(3):427-438
The Asian swamp eel Monopterus albus is normally considered a freshwater species, but can also occasionally be found in brackish water. It is an obligate air‐breather with highly reduced gills, making its osmoregulation physiology interesting because the gills normally represent the primary site of osmoregulation in teleosts. Being a popular fish for human consumption, the swamp eel is cultured extensively in freshwater ponds in the Mekong Delta of Vietnam. However, very little is known about its salinity tolerance, which is becoming topical due to the increasing salt‐water intrusions into tropical deltas. We therefore studied how increased salinity affects survival, growth, blood pressure, heart rate, blood osmolality and plasma ions. All eels survived prolonged exposure to 5 and 10 g L?1, although plasma osmolality increased significantly at 10 g L?1. Further elevation to 15 and 20 g L?1 was associated with significantly elevated mortality, with a corresponding increase in plasma osmolality and ion con‐centrations. Our results show that swamp eels thrive in 0–10 g L?1 with an optimum growth between 0 and 9 g L?1, indicating that utilization of low saline brackish waters for aquaculture is possible. 相似文献
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巴氏杆菌病又叫出血性败血症，简称出败，主要是由多杀性巴氏杆菌所引起的各种畜禽和野生动物感染的一种传染病。临床特征急性病例主要表现为败血症和炎性出血，慢性特征表现为皮下组织、关节、各脏器的局灶性化脓性炎症。该病常在畜禽中发生，而在狐狸等经济动物方面报道相对较少。2006年秋，吉林左家某狐场的狐狸突然发病并陆续死亡，经流行病学调查、病理剖检和实验室检验，确诊为多杀性巴氏杆菌感染所致。 相似文献
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用同核异质体不育系ＫＶ型福伊Ａ和ＷＡ型福伊Ａ配制１２个组合，对构成产量主要性状进行比较分析，结果表明：Ｆ１超亲优势ＫＶ型组合大于ＷＡ型组合，由于穗数、穗粒数和结实率的增强，使每个组合的单株粒重的杂种优势正效应达到了显著水平 相似文献
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福优４６晚籼早熟组合，稳产性好，适应性广，穗数是构成产量重要因素；形成产量的生物学指标是有合理叶面积指数和较强光能利用率，促进了干物质积累增加，籽粒灌浆速度加快。 相似文献
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Barbara Glanemann Karen Humm Mariana Abreu Sophie Aspinall David Buckeridge Hope Carveth Hannah Darcy Jessica Florey Polly Frowde Isuru Gajanayake Kate Green Emma Holmes Alenka Hrovat Anne-Katherine Jasensky Bryn A Jones Vasiliki Lantzaki Eve JY Lo Kirsty MacDonald Kevin O'Brien Alejandro Suárez-Bonnet Nele Van den Steen Balazs Szladovits Annelies Willems Helen Wilson 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2023,37(1):126-132
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BD Gartrell JY Ahn R Khude N Dougherty K Johnson J McCutchan 《New Zealand veterinary journal》2020,68(2):126-133
ABSTRACTCase history: Gradual onset of ocular opacity was observed in three gold-striped geckos (Woodworthia chrysosiretica), and five Pacific geckos (Dactylocnemis pacificus) held in two adjacent terrariums in a zoological institution located in the North Island of New Zealand. Ultraviolet light and heat had been provided for the previous 3–4 years by a fluorescent bulb, but in the last 4 weeks of winter a ceramic heat bulb had been added, situated 10?cm above the upper mesh of the cageClinical findings: All eight geckos presented with mostly bilateral lesions of varying severity confined to the central or upper quadrant of the spectacles. These lesions ranged from variable areas of opacity within the stroma of the spectacle to similarly distributed ulcers of the surface epithelium of both spectacles. The spectacle lesions in the Pacific geckos responded well to treatment with topical combined antimicrobial therapy, within 18–29 days. The gold-striped geckos suffered complications including dysecdysis, severe spectacle ulceration and perforation, mycotic spectaculitis, and widespread mycotic dermatitis resulting in death or leading to euthanasia.Pathological findings: In the three gold-striped geckos, there were extensive areas of deep ulceration and replacement of the spectacle with a thick serocellular crust containing large numbers of fungal elements. The affected areas of the stroma were expanded by large deposits of proteinaceous and mucinous material, pyknotic cellular debris and moderate numbers of heterophils and macrophages as well as infiltrating fungal hyphae.Diagnosis: Mycotic spectaculitis with ulceration and perforation, and disseminated mycotic dermatitis likely secondary to thermal burns.Clinical relevance: This is the first report of thermal burns of the spectacle in any reptile. There was species variation in the burn severity with gold-striped geckos showing more severe lesions, possibly due to a mix of behavioural and anatomical factors. The thermal burns to the spectacles in three cases were complicated by delayed healing, perforation, dysecdysis and severe mycotic infection. 相似文献
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Hsu HF Houng JY Chang CL Wu CC Chang FR Wu YC 《Journal of agricultural and food chemistry》2005,53(15):6117-6125
This study investigates the antioxidant activity and cytotoxicity of Glossogyne tenuifolia extract on various cancer cell lines. The 5.8s DNA of G. tenuifolia was isolated, and the species of this plant was confirmed by NCBI's DNA database. G. tenuifolia was then extracted with ethanol and separated into several fractions using the partition procedure with water, n-butanol, and ethyl acetate (EA). Among these, the EA fraction most significantly affected the activity of DPPH(*) and superoxide anion scavenging. Additionally, only the EA fraction exhibited cytotoxicity on breast cancer cells (MCF-7 and MDA-MB-231) and liver cancer cells (Hep G2 and Hep 3B). Next, the EA fraction was further separated by column chromatography, and 15 fractions were obtained. Three effective components were isolated and identified separately from the active fractions: oleanolic acid (OA) from fraction 6, luteolin from fractions 8-10, and luteolin-7-glucoside from fraction 12. The test of these three compounds on scavenging activity of DPPH(*) and superoxide anion indicates that luteolin had the highest antioxidant activity, whereas the effect of OA was negligible. Additionally, a synergistic effect between luteolin and luteolin-7-glucoside was observed. Kick-out experiments showed that the activities were vanished or decreased. Especially on MDA-MB-231 and MCF-7 cells, the cytotoxicity completely disappeared when luteolin was eliminated from fractions 8-10. These findings demonstrate that luteolin plays a crucial role in the inhibition of the growth of hepatoma cancer cell lines. Fraction 3, which did not contain luteolin, luteolin-7-glucoside, and oleanolic acid, had cytotoxicity on MDA-MB-231, MCF-7, Hep G2, Hep 3B, and A549, which implies that this fraction contained some other effective ingredients and requires further study. The investigation is currently underway in our laboratory. 相似文献
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An ovarian enlargement (diameter, 8 cm) was identified and surgically excised from a 5-year-old female dog. Microscopic examination of the multinodular neoplasm revealed sheets of polygonal neoplastic cells with large nuclei, frequent mitosis, necrosis and haemorrhage. Immunohistochemically, the neoplastic cells were positive for vimentin and alkaline phosphatase but were negative for CD3, CD79a, cytokeratin, alpha-fetoprotein, inhibin-α and S-100. The histopathological diagnosis of the mass was unilateral ovarian dysgerminoma. 相似文献
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鸡葡萄球菌病是由葡萄球菌引起的一种急性或慢性传染性疾病。该病是一种多发、易发的禽病,尤其现在的禽类养殖多采用密度大的集约化方式,接触、磨擦、蹬踩,以及消毒不彻底都易引发此病。该病表现多种临床症状,包括鸡卵黄囊感染、皮下脓肿、跛脚、败血症、关节炎、脊椎炎、坏疽性皮炎以及细菌性心内膜炎、肝的肉芽肿等,给养鸡业造成较大经济损失。现将笔者在临床工作中对一起鸡群发生葡萄球菌发病的诊断与治疗情况报告如下。1发病情况2006年7月10日临沂市某户饲养7000余只40日龄海兰蛋鸡突然发病,11、12、13日分别死亡180、200、220只。病鸡… 相似文献