Rhynchaenus empopulifolis is a defoliator harming poplar,and its occurrence is reported in Tai’an area for the first time.Through indoor rearing and forest investigation,the morphological,biological and damage charac...Rhynchaenus empopulifolis is a defoliator harming poplar,and its occurrence is reported in Tai’an area for the first time.Through indoor rearing and forest investigation,the morphological,biological and damage characteristics of R.empopulifolis in Tai’an were observed,and color pictures of each instar and local characteristics of adult as well as damage symptoms were provided,in order to lay a theoretical basis for rapid identification and precise control of R.empopulifolis.展开更多
Based on the study of infection and morphological characteristics of 12 kinds of livestock Eperythrozoon,disinfection test by drugs in vitro,disinfection test by ultraviolet light,Eperythrozoon survival test at differ...Based on the study of infection and morphological characteristics of 12 kinds of livestock Eperythrozoon,disinfection test by drugs in vitro,disinfection test by ultraviolet light,Eperythrozoon survival test at different times and temperatures,drug sensitivity test and clinical treatment of infected swines were carried out on Eperythrozoon suis and Eperythrozoon wenyonii to further study the biological characteristics. Test results showed that infection level of livestock Eperythrozoon was high,while morbidity was low. Eperythrozoon suis and Eperythrozoon wenyonii could survive for 1 year at 3- 5 ℃,180 d at 16- 26 ℃ and 30 min at- 20 ℃,while which died instantly at 65 ℃. Eperythrozoon was sensitive to general chemical disinfection drugs,while not sensitive to ultraviolet light disinfection. Transmission of Eperythrozoon mainly included contagious transmission and vertical transmission. Results of drug sensitivity test showed that Eperythrozoon was sensitive to Tetracycline and antigen insect drugs. Sizes and shapes of different livestock Eperythrozoon were different. The study provided a scientific basis for the effective prevention and treatment of livestock Eperythrozoonosis.展开更多
Bark beetle species in natural stands of spruce, Picea crassifolia （Kom.） were investigated in Maixiu Forest Park, Qinghai Province, northwest China, during 2005 and 2007. Two pioneer Ips species, Ips nitidus Eggers...Bark beetle species in natural stands of spruce, Picea crassifolia （Kom.） were investigated in Maixiu Forest Park, Qinghai Province, northwest China, during 2005 and 2007. Two pioneer Ips species, Ips nitidus Eggers and Ips shangrila Cognato and Sun were found. I. nitidus occurs naturally in northwest China. I. shangrila is a new species in the world. In the past, it was confused with I. mannsfeldi Wachtl in China. The damage of these two Ips species has been very severe in Maixiu and the morphological and bio-logical characteristics were studied. I. nitidus starts to fly in early May and prefers the mid to lower part of the host tree to colonize as its habitat. I. shangrila always infests from the top of the trunk, especially in branches larger than 3 cm in diameter in the crowns and sometimes even colonizes entire young trees. The two Ips species are the most destructive secondary bark beetles on P. crassifolia and always cause mortality of trees by their cooperation.展开更多
清溪乌鳖(Qingxi black strain of Pelodiscus sinensis)是基于太湖花鳖(Taihu strain of P.sinensis)体色黑化个体选育而成的新品种,为研究体色黑化对中华鳖群体分化的影响,通过测定太湖花鳖、清溪乌鳖的23项形态学指标、3项生物学指...清溪乌鳖(Qingxi black strain of Pelodiscus sinensis)是基于太湖花鳖(Taihu strain of P.sinensis)体色黑化个体选育而成的新品种,为研究体色黑化对中华鳖群体分化的影响,通过测定太湖花鳖、清溪乌鳖的23项形态学指标、3项生物学指标及营养组成,对太湖花鳖和清溪乌鳖种质性状进行系统评估。结果显示:(1)形态学指标的主成分分析、聚类分析结果一致且两者形态差异主要表现在背甲、腹甲、四肢和头部的形态差异;差异系数分析结果显示两者尚未达到亚种分化水平。(2)太湖花鳖的可食净重占比显著高于清溪乌鳖;而背甲重占比,太湖花鳖显著低于清溪乌鳖。(3)太湖花鳖肌肉中的粗蛋白含量(♂:18.15%,♀:18.08%)显著低于清溪乌鳖(♂:18.85%,♀:18.89%);而粗脂肪含量,太湖花鳖(♂:0.56%,♀:0.56%)显著高于清溪乌鳖(♂:0.43%,♀:0.45%)。(4)清溪乌鳖肌肉中的必需氨基酸/非必需的含量比值(♂:84.44%,♀:85.54%)和呈味氨基酸/总氨基酸的含量比值(♂:38.65%,♀:38.35%)显著高于太湖花鳖(♂:80.59%,♀:81.82%)、(♂:37.88%,♀:37.36%);而必需氨基酸/总氨基酸的含量比值(太湖花鳖♂:50.46%,♀:50.70%;清溪乌鳖♂:51.01%,♀:51.44%),两者之间无显著差异;太湖花鳖裙边中的羟脯氨酸含量(♂:16.08%,♀:16.12%)显著高于清溪乌鳖(♂:15.77%,♀:15.69%)。(5)太湖花鳖和清溪乌鳖肌肉中饱和脂肪酸含量(太湖花鳖♂:31.89%,♀:30.92%;清溪乌鳖♂:31.64%,♀:32.88%)、单不饱和脂肪酸含量(太湖花鳖♂:30.50%,♀:30.160%;清溪乌鳖♂:30.55%,♀:30.71%)、多不饱和脂肪酸含量(太湖花鳖♂:30.94%,♀:30.58%;清溪乌鳖♂:31.98%,♀:32.72%)和EPA+DHA的含量(太湖花鳖♂:12.63%,♀:12.39%;清溪乌鳖♂:12.98%,♀:12.82%)基本接近,仅在个别脂肪酸的含量存在显著差异。展开更多
文摘Rhynchaenus empopulifolis is a defoliator harming poplar,and its occurrence is reported in Tai’an area for the first time.Through indoor rearing and forest investigation,the morphological,biological and damage characteristics of R.empopulifolis in Tai’an were observed,and color pictures of each instar and local characteristics of adult as well as damage symptoms were provided,in order to lay a theoretical basis for rapid identification and precise control of R.empopulifolis.
基金Supported by People's Government Science and Technology Research Projects of Pu'er City
文摘Based on the study of infection and morphological characteristics of 12 kinds of livestock Eperythrozoon,disinfection test by drugs in vitro,disinfection test by ultraviolet light,Eperythrozoon survival test at different times and temperatures,drug sensitivity test and clinical treatment of infected swines were carried out on Eperythrozoon suis and Eperythrozoon wenyonii to further study the biological characteristics. Test results showed that infection level of livestock Eperythrozoon was high,while morbidity was low. Eperythrozoon suis and Eperythrozoon wenyonii could survive for 1 year at 3- 5 ℃,180 d at 16- 26 ℃ and 30 min at- 20 ℃,while which died instantly at 65 ℃. Eperythrozoon was sensitive to general chemical disinfection drugs,while not sensitive to ultraviolet light disinfection. Transmission of Eperythrozoon mainly included contagious transmission and vertical transmission. Results of drug sensitivity test showed that Eperythrozoon was sensitive to Tetracycline and antigen insect drugs. Sizes and shapes of different livestock Eperythrozoon were different. The study provided a scientific basis for the effective prevention and treatment of livestock Eperythrozoonosis.
文摘Bark beetle species in natural stands of spruce, Picea crassifolia （Kom.） were investigated in Maixiu Forest Park, Qinghai Province, northwest China, during 2005 and 2007. Two pioneer Ips species, Ips nitidus Eggers and Ips shangrila Cognato and Sun were found. I. nitidus occurs naturally in northwest China. I. shangrila is a new species in the world. In the past, it was confused with I. mannsfeldi Wachtl in China. The damage of these two Ips species has been very severe in Maixiu and the morphological and bio-logical characteristics were studied. I. nitidus starts to fly in early May and prefers the mid to lower part of the host tree to colonize as its habitat. I. shangrila always infests from the top of the trunk, especially in branches larger than 3 cm in diameter in the crowns and sometimes even colonizes entire young trees. The two Ips species are the most destructive secondary bark beetles on P. crassifolia and always cause mortality of trees by their cooperation.
文摘清溪乌鳖(Qingxi black strain of Pelodiscus sinensis)是基于太湖花鳖(Taihu strain of P.sinensis)体色黑化个体选育而成的新品种,为研究体色黑化对中华鳖群体分化的影响,通过测定太湖花鳖、清溪乌鳖的23项形态学指标、3项生物学指标及营养组成,对太湖花鳖和清溪乌鳖种质性状进行系统评估。结果显示:(1)形态学指标的主成分分析、聚类分析结果一致且两者形态差异主要表现在背甲、腹甲、四肢和头部的形态差异;差异系数分析结果显示两者尚未达到亚种分化水平。(2)太湖花鳖的可食净重占比显著高于清溪乌鳖;而背甲重占比,太湖花鳖显著低于清溪乌鳖。(3)太湖花鳖肌肉中的粗蛋白含量(♂:18.15%,♀:18.08%)显著低于清溪乌鳖(♂:18.85%,♀:18.89%);而粗脂肪含量,太湖花鳖(♂:0.56%,♀:0.56%)显著高于清溪乌鳖(♂:0.43%,♀:0.45%)。(4)清溪乌鳖肌肉中的必需氨基酸/非必需的含量比值(♂:84.44%,♀:85.54%)和呈味氨基酸/总氨基酸的含量比值(♂:38.65%,♀:38.35%)显著高于太湖花鳖(♂:80.59%,♀:81.82%)、(♂:37.88%,♀:37.36%);而必需氨基酸/总氨基酸的含量比值(太湖花鳖♂:50.46%,♀:50.70%;清溪乌鳖♂:51.01%,♀:51.44%),两者之间无显著差异;太湖花鳖裙边中的羟脯氨酸含量(♂:16.08%,♀:16.12%)显著高于清溪乌鳖(♂:15.77%,♀:15.69%)。(5)太湖花鳖和清溪乌鳖肌肉中饱和脂肪酸含量(太湖花鳖♂:31.89%,♀:30.92%;清溪乌鳖♂:31.64%,♀:32.88%)、单不饱和脂肪酸含量(太湖花鳖♂:30.50%,♀:30.160%;清溪乌鳖♂:30.55%,♀:30.71%)、多不饱和脂肪酸含量(太湖花鳖♂:30.94%,♀:30.58%;清溪乌鳖♂:31.98%,♀:32.72%)和EPA+DHA的含量(太湖花鳖♂:12.63%,♀:12.39%;清溪乌鳖♂:12.98%,♀:12.82%)基本接近,仅在个别脂肪酸的含量存在显著差异。
