共查询到20条相似文献，搜索用时 46 毫秒
1.
澳洲银鲈的生物学与工厂化养殖试验 总被引：1，自引：0，他引：1
澳洲银鲈是上世纪90年代末引入我国的水产养殖品种,原产于澳大利亚,属鲈形目,体形与其它鲈鱼相似,该鱼具有广泛的食性和对温度的适应性,适合我国北方地区养殖。2004年天津市津南国家农业科技园区引种3厘米澳洲银鲈2万尾进行工厂化养殖,获得成功,本文介绍澳洲银鲈的生物学及工厂化养殖过程。一、澳洲银鲈生物学概况1.形态结构澳洲银鲈鱼体呈纺锤体型、侧扁,头部尖细、口小。侧线上方至背部颜色较深,呈灰黑色;侧线下方至腹部为银白色。侧线鳞平直、明显。2.食性与生长澳洲银鲈是澳州当地温和的养殖品种,生活在河流中,以小虾、昆虫、浮游生物、… 相似文献
2.
本文综述了银鲈(Bidyanus bidyuanus)的养殖现状,总结了银鲈的食性与摄食特点、生活习性等生物学特性.人工繁殖、苗种培育和成鱼养殖技术,并分析了其养殖过程中的注意事项.旨在为国内银鲈养殖提供一些参考,促进银鲈养殖业的迅猛发展. 相似文献
3.
澳洲银鲈(Bidyanus bidyanus),英文名silver perch。该鱼20世纪初在澳洲开始引起关注,但直到60年代才开始人工养殖。90年代初该鱼的人工繁殖技术成熟后,澳洲开始大规模养殖。我国台湾地区于80年代引进,并 相似文献
4.
淡水银鲈(Bidyanus bidyanus)(图见彩中插2)原产于澳大利亚墨累河流域,隶属于鲈形目、,科,是澳洲东部有名的淡水经济鱼类。淡水银鲈体呈银灰色,无肌间刺,肌肉具有弹性且略有香味,体内胶性脂肪充积,蛋白质含量高,肥而不腻,营养十分丰富,口感极佳,是一种商品价 相似文献
5.
6.
澳洲银鲈 ( Bidyanus bidyanus)原产于澳大利亚墨累—达令 ( Murray- Darling)河流域 ,属广温性鱼类。该鱼体色银白 ,肌间刺少 ,肉质鲜美 ,头小 ,可食部分所占比例大 ,食性杂 ,不互相残食 ,生长快 ,适宜在淡水池塘、水库养殖。近年来 ,闽南地区从台湾省引进该鱼 ,获得较好养殖效益。但由于苗种来自台湾 ,价格较高 ,难以推广养殖。自 1999年以来 ,笔者进行了银鲈人工繁殖试验 ,并获得成功。现将试验总结如下。材料与方法 1.亲鱼试验用亲鱼是用 1998年 5月从台湾引进的 3cm左右银鲈鱼种在本地池塘饲养选留而得。选择体重 1.1～ 1.2 kg、… 相似文献
7.
2008年11月在广西北海市侨港镇码头采获银鲈科Gerreidae、银鲈属Gerres鱼类标本两尾,经鉴定为大棘银鲈Gerres macracanthus Bleeker,1854,系我国南海鱼类一新记录。其主要特征为：体长卵圆形,侧扁,体长为体高的2.2～2.3倍;体背腹缘均呈弧状隆起,体高以背鳍起点处最高。口小,能活动,伸出时略向下倾斜。体被薄圆鳞,易脱落;侧线鳞41～43枚。背鳍鳍棘部与鳍条部相连;背鳍IX-10,第2鳍棘延长呈丝状,压倒时末端伸达尾柄;臀鳍Ⅲ-7,以第3鳍棘最长;胸鳍长,末端可达臀鳍起点上方;尾鳍叉形。新鲜标本体背部银灰色,腹部银白色,体侧有7～10条青灰色横带;背鳍灰白色,第2鳍棘黑色;臀鳍、胸鳍和腹鳍淡黄色;尾鳍灰黄色,上、下叶内缘暗色,下叶外缘白色。 相似文献
8.
9.
10.
11.
澳洲银鲈人工繁殖试验 总被引：2，自引：0，他引：2
澳洲银鲈 (Ｂｉｄｙａｎｕｓｂｉｄｙａｎｕｓ)原产于澳大利亚墨累 -达令 (Ｍｕｒｒａｙ -Ｄａｒｌｉｎｇ)河流域。体色银白 ,肌间刺少 ,肉质鲜美 ,头小 ,可食用部分大 ,杂食、不互相残食 ,生长速度较快。属广温性鱼类 ,适宜在各地淡水池塘 ,水库养殖。近年来 ,该鱼从台湾省引进闽南地区养殖 ,获得较好效益。 1999年以来 ,笔者即进行银鲈人工繁殖试验 ,并于今年获得成功。1 材料与方法1 1 亲鱼1 1 1 亲鱼来源。本试验用的亲鱼来源于1998年 5月从台湾引进 3ｃｍ左右银鲈苗在本地池塘养殖选留培育而得。1 1 2 亲鱼选择。选择体重 1 1～ 1 … 相似文献
12.
澳洲银鲈及其养殖技术 总被引：2，自引：0，他引：2
澳洲银鲈〔Ｂｉｄｙａｎｕｓｂｉｄｙａｎｕｓ(Ｍｉｔｃｈｅｌｌ)〕又名银鱼立、甘旨鱼 ,英文名ＳｉｌｖｅｒＰｅｒｃｈ。原产地为澳大利亚莫莱 -达令河流域。作为食用鱼 ,其肌间刺少、肉质鲜美、肥而不腻 ,受到消费者喜爱 ;由于澳洲银鲈的适应性和抗病力强 ,生长又快 ,广东、福建等地已进行移植。现根据近年来上海市南汇区水产技术推广站示范基地养殖澳洲银鲈的经验 ,对其形态特征、生态习性及养殖技术作简单介绍。一、形态特征据澳大利亚养殖专家ＬａｎｃｅＰｅｒｋｅｒ先生介绍 ,澳洲银鲈的祖先生活在海里 ,后来移至淡水中生存繁衍 ,故在… 相似文献
13.
《Journal Of Applied Aquaculture》2013,25(1-2):75-83
Abstract Most breeding programs for the Australian native freshwater silver perch, Bidyanus bidyanus, are based on fish originally captured from natural populations. However, over the last 20 years, there has been a dramatic decline in the distribution and abundance of silver perch in the wild and the species now has the conservation status of “vulnerable.” Unless broodfish can be domesticated a serious shortage is imminent. The aims of this study were to determine the age and size at sexual maturity and the reproductive performance of silver perch reared in captivity. Fingerlings (mean weight, 4.0 g) from a hatchery were stocked into an aerated 0.32-ha earthen pond at a density of 22,000 fish/ ha for 12 months, harvested, and restocked at 10,000 fish/ha for a further 2 years. The fish were fed a formulated diet containing 35% crude protein. No fish were mature at 1 year of age; at 2 years, most males (93%; total length, 304.0 mm, weight 412.7 g), but no females were mature; and at 3 years, most females (97%; 316.4 mm, 549.6 g) were mature. Three-year-old fish injected with 200 IU/kg human chorionic gonado-trophin spawned viable gametes. High fecundity (mean 139,286 eggs/ kg), fertilization rates (84.5%) and hatch rates (76.8%) demonstrate that broodfish can be domesticated and the life cycle of silver perch can be closed. The use of domesticated broodfish will eliminate reliance on wild populations and provide a basis for future hatchery production and selective breeding programs. 相似文献
14.
养殖澳洲银鲈肌肉营养成分测定 总被引：4，自引：0，他引：4
采用常规分析方法测定了工厂化养殖的澳洲银鲈(B idyanus bidyanus)的肌肉营养成分。结果显示,澳洲银鲈肌肉干物质中粗蛋白和粗脂肪含量分别为85.80%、9.82%。100 g肌肉中8种常规矿物元素含量分别为Ca16 mg、Mn 0.02 mg、Zn 0.5 mg、Cu 0.02 mg、K 371 mg、Na 27 mg、Mg 27 mg、Fe 0.6 mg;氨基酸含量为18.69 mg,其中必需氨基酸含量为7.5 mg;脂肪酸含量为10.2 mg,其中饱和脂肪酸3.62 mg,不饱和脂肪酸6.58 mg。 相似文献
15.
银鲈 (ＢｉｄｙａｎｕｓＤｉｄｙａｎｕｓ)原产于澳大利亚墨累河流域 ,是该国著名淡水经济鱼类。我国福建、湖北、上海、广东等地近年先后引进试养 ,并进行了人工繁殖和苗种培育的研究试验 ,但育苗数量和规模极为有限 ,以致国内生产单位所需种苗均需花大量外汇从台湾引进 ,且价格昂贵。我们于 2 0 0 0年 6月在银鲈全人工繁殖成功的基础上 ,先后进行了水泥池、旧鳗池、土池三种不同池塘条件的苗种培育技术的研究试验 ,取得较满意的效果 ,已达到批量育苗规模。现将此次人工培苗情况汇报如下 :1 材料和方法1 1 水泥池培苗1 1 1 池塘条件水泥… 相似文献
16.
17.
18.
Cultured juvenile silver perch, Bidyanus bidyanus (Mitchell), were affected by epitheliocystis, with a prevalence of up to 75%. The condition affected 2–96% of gill filaments. Granular basophilic cysts ranged from 10 to 87 μm and had a round-to-oval shape. The infected cells were positioned centrally within a lamella, often close to its tip, and their identity was difficult to determine, but the involvement of pillar cells could not be precluded. The size of pathogen was within the range previously reported. The pathogen had two morphological forms, which were positioned differently within the cyst. The form located more in the centre was rod-shaped with an electron-dense core and electron-lucent vesicles on the sides of the core. Its mean length was 498.14 nm (SD = 47.68 nm), and its mean width was 145.14 nm (SD = 9.53 nm). The form present in a more peripheral position had an irregular shape, often did not show the electron-dense core and did not have the electron-lucent vesicles. Its mean length was 704 nm (SD = 170.29 nm) and its mean width was 152.4 nm (SD = 16.40 nm). Both forms were enclosed by a double trilaminar membrane. This is the first confirmed report of epitheliocystis in Australian freshwater fish. 相似文献
19.
20.
In this study, we estimated requirements for digestible protein, using intact protein sources, at one digestible energy content. Using digestibility data for silver perch (Bidyanus bidyanus Mitchell) for a large number of ingredients, we formulated a ‘summit’ diet to contain between 1.4 and 1.8 times the ‘expected requirements’ for digestible essential amino acids (based on requirements for channel catfish, Ictalurus punctatus Rafinesque). A ‘diluent’ diet was formulated to contain 0.4–0.5 times the expected requirements of digestible essential amino acids. Both ‘summit’ and ‘diluent’ diets contained similar digestible energy (14.7 MJ digestible energy kg?1 for the summit and 13.4 MJ digestible energy kg?1 for the diluent). Six diets were prepared with the following amounts of summit–diluent diets: 100:0, 80:20, 60:40, 40:60, 20:80 and 0:100. A practical diet widely used by commercial farmers was also included as a control. Ten juvenile fish (2.1–2.6 g) were stocked into each experimental 70‐L acrylic aquarium, and each dietary treatment was randomly assigned to five replicate aquaria. Fish were fed twice daily to apparent satiation for 54 days. Final individual fish weight ranged from 4–15.5 g. Results were analysed using intersecting linear regression analysis. The optimum digestible dietary protein for diets with 13.4–14.7 MJ digestible energy kg?1, after which protein deposition did not increase significantly, was 28%. Although this study did not determine requirements for individual amino acids, for diets with the digestible energy content used here, requirements for individual amino acids obviously did not exceed the content in the 28% protein diet. These contents are useful as an estimate of ‘recommended levels’ for silver perch diets with 13.4–14.7 MJ digestible energy kg?1. The proximate composition of fish was affected by diet. Whole body protein and moisture increased, whereas lipid content decreased with increasing dietary protein content (and increasing protein–energy ratio and decreasing lipid). Fish size was also affected by diet; however, the changes in whole carcass proximate composition also occurred for fish fed diets 60:40, 80:20 and the summit diet which were a similar final weight. 相似文献