Fasting in freshwater severely affects growth of juvenile chum salmon when entering cold seawater     

Nakamura  Shu  Kaneko  Nobuto  Nonaka  Tatsuhiro  Kurita  Daiki  Miyakoshi  Yasuyuki  Shimizu  Munetaka 《Fisheries Science》2019,85(4):655-665

Fisheries Science - We conducted rearing experiments to examine the cumulative effects of fasting in freshwater and transfer to cold seawater on the growth of juvenile chum salmon. In the first...  相似文献   

Synthesis and insecticidal activity of nitroguanidine derivatives     

Hideki Uneme  Koichi Iwanaga  Noriko Higuchi  Yasuyuki Kando  Tetsuo Okauchi  Atsuo Akayama  Isao Minamida 《Pest management science》1999,55(2):202-205

Nitroguanidine derivatives with thiazol-5-ylmethyl moieties were prepared and their insecticidal activities against homopterous pests were tested. New synthetic routes for 2-chloro-5-chloromethylthiazole from 2,3-dichloro-1-propene and for substituted nitroguanidines from S-methyl-N-nitroisothiourea were established. Biological evaluation led to a novel insecticide (E)-1-(2-chlorothiazol-5-ylmethyl)-3-methyl-2-nitroguani dine (TI-435) which has a broad activity spectrum and is under development. ©1999 Society of Chemical Industry  相似文献   

Insect growth regulators with hydrazide moiety inhibit strigolactone biosynthesis in rice     

Kojiro Kawada  Yasuyuki Sasaki  Tadao Asami  Shunsuke Yajima  Shinsaku Ito 《Journal of Pesticide Science》2022,47(1):43

Strigolactones (SLs) are carotenoid-derived plant hormones involved in several growth and developmental processes. Also, SLs are allelochemicals that induce the seed germination of root parasitic plants and the hyphal branching of arbuscular mycorrhizal fungi. In this study, to identify novel lead chemicals that inhibit SL biosynthesis, we evaluated the effect of agrochemicals on SL biosynthesis. We found that the diacylhydrazine insect growth regulator, chromafenozide, reduced the endogenous level of 4-deoxyorobanchol (4DO), a major SL in rice. Furthermore, treatment with the same class of insect growth regulator, methoxyfenozide, also resulted in the reduction of 4DO levels in rice root exudates. These results suggest that chromafenozide and methoxyfenozide are novel lead inhibitors of SL biosynthesis.  相似文献   

Circulating insulin-like growth factor I in juvenile chum salmon: relationship with growth rate and changes during downstream and coastal migration in northeastern Hokkaido,Japan     

Nobuto Kaneko  Natsumi Taniyama  Yu Inatani  Yuta Nagano  Makoto Fujiwara  Mitsuru Torao  Yasuyuki Miyakoshi  Munetaka Shimizu 《Fish physiology and biochemistry》2015,41(4):991-1003

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Screening for proteinuria in cats using a conventional dipstick test after removal of cauxin from urine with a Lens culinaris agglutinin lectin tip     

Miyazaki M  Fujiwara K  Suzuta Y  Wakamatsu N  Taira H  Suzuki A  Yamashita T 《Veterinary journal (London, England : 1997)》2011,189(3):312-317

Proteinuria is an important indicator of urinary tract disease and urine dipsticks are simple and sensitive tools to screen for this marker. However, the use of dipsticks to screen for proteinuria may not be appropriate in cats, since cauxin, a 70 kDa glycoprotein, is secreted by the kidneys in clinically normal animals of this species. To circumvent this problem, a Lens culinaris agglutinin (LCA) lectin tip was developed to remove cauxin from feline urine, followed by conventional urine dipstick testing for proteinuria. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS–PAGE) with Coomassie brilliant blue R-250 staining indicated that >90% cauxin in the urine of 13 clinically normal cats was trapped by the LCA lectin tip, so that the dipstick protein ‘score’ changed from ‘positive’ (?30 mg/dL) for untreated urine to ‘negative’ (?10 mg/dL) for lectin tip-treated urine. In contrast, SDS–PAGE indicated that lectin tip-treated samples from 20 animals with renal disease contained high concentrations of albumin and low-molecular weight proteins; dipstick testing of lectin tip-treated urine resulted in a consistently positive protein score. The accuracy of the dipstick method for detecting cats with abnormal proteinuria is enhanced if dipsticks are used with urine samples that have first been passed through the LCA lectin tip.  相似文献   

Effects of thiosulfate addition on ammonia and nitrogen removal in biofilters packed with Oyaishi (pumice tuff)     

Tomoko Yasuda  Yasuyuki Fukumoto  Miyoko Waki  Toshimi Matsumoto  Hirohide Uenishi 《Animal Science Journal》2020,91(1)

Ammonia removal is achieved partly by absorption and nitrification in biofilters, resulting in the accumulation of nitrogen and the necessity of treating the effluent water. We investigated the effects of thiosulfate addition to a biofilter containing pumice tuff for ammonia and nitrogen removal in a laboratory‐scale experiment. The addition of thiosulfate to the circulating water led to a decreased nitrate and nitrite along with an increase of sulfate. The inorganic nitrogen in the circulating water decreased by up to 44% with thiosulfate addition compared to without thiosulfate. Batch experiments revealed that denitrification activity decreased exponentially along with increases in dissolved oxygen; however, approximately 30% of denitrification activity was maintained at dissolved oxygen concentration of 3.3 mg/L. Metabarcoding of 16S rRNA genes indicated that the genus Thiobacillus had a relative abundance of 0.002%–0.016% of total bacteria in the biofilter packing material. The circulating water pH was decreased below 5 with sulfur oxidation, and ammonium was accumulated without pH control resulting in a decrease in the relative abundance of the family Nitrosomonadaceae. Its relative abundance increased with control of pH to near neutral, indicating that ammonia‐oxidizing activity could be maintained by adjusting pH. Thiosulfate addition could stimulate nitrogen removal by sulfur‐dependent denitrification in biofiltration systems.  相似文献   

First report of anthracnose on tillandsia caused by Colletotrichum sp. in Japan     

Kumita  Kohei  Kitazawa  Yugo  Tokuda  Ryosuke  Miyazaki  Akio  Maejima  Kensaku  Namba  Shigetou  Yamaji  Yasuyuki 《Journal of General Plant Pathology》2021,87(4):254-258

Journal of General Plant Pathology - In July 2018, tillandsia (Tillandsia sp.) plants with brown to dark brown lesions on the leaves and pseudobulbs were found in Japan. Based on morphological and...  相似文献   

Determination of GHG and ammonia emissions from stored dairy cattle slurry by using a floating dynamic chamber     

Keiko MINATO  Yasuyuki KOUDA  Masaaki YAMAKAWA  Satoshi HARA  Tadashi TAMURA  Takashi OSADA 《Animal Science Journal》2013,84(2):165-177

We developed a system for measuring emissions from stored slurry by using a floating dynamic chamber. CH₄, CO₂, N₂O and NH₃ emitted from the storage tank of a dairy cattle farm in eastern Hokkaido were measured during summer 2008 (7/16–8/6), fall 2008 (10/2–10/26), spring 2009 (6/2–6/21) and winter 2009 (3/11). Average daily gas emission rates in summer, fall and spring were, respectively, 54.8, 54.2 and 34.3 g/m² for CH₄; 602, 274 and 254 g/m² for CO₂; 55.4, 68.2 and trace mg/m² for N₂O; and 0.55, 0.73 and 0.46 g/m² for NH₃. CH₄, CO₂ and NH₃ emission rates during the brief measurement period in winter were reduced to 1/4, 1/23 and 1/2, respectively, of summer emission rate levels. All gas emissions showed diurnal fluctuation and were greatest during the daytime, when the ambient temperature rose. CH₄, NH₃ and CO₂ emissions increased significantly during the daytime, and the daily emission (in grams) of each gas was positively correlated with maximum daily temperature. According to the combined spring, summer and fall measurements, the CH₄, N₂O and NH₃ annual emission factors were 1.42% (g CH₄/g volatile solids), 0.02% (g N₂O‐N/g total N) and 0.43% (g NH₃‐N/g total N), respectively.  相似文献   

LC-MS/MS Analysis of Canine Lipoproteins Fractionated Using the Ultracentrifugation-Precipitation Method     

Asuka SUTO  Masahiro YAMASAKI  Yukari TAKASAKI  Yasuyuki FUJITA  Riichiro ABE  Hiroshi SHIMIZU  Hiroshi OHTA  Mitsuyoshi TAKIGUCHI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2013,75(11):1471-1477

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Generalized Alopecia with Vasculitis-Like Changes in a Dog with Babesiosis     

Yumi TASAKI  Naoki MIURA  Keita IYORI  Koji NISHIFUJI  Yasuyuki ENDO  Yasuyuki MOMOI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2013,75(10):1367-1369

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