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Hashimoto Midori Kidokoro Hideaki Suyama Satoshi Fuji Taiki Miyamoto Hiroomi Naya Miyako Vijai Dharmamony Ueno Yasuhiro Kitakado Toshihide 《Fisheries Science》2020,86(3):445-456
Fishery-independent surveys using sea surface trawl nets for Pacific saury Cololabis saira in the western North Pacific since 2003 have enabled the investigation of their annual distribution patterns and total biomass during June and July, prior to the main fishing season in Japan. We compared biomass estimates and their associated variances derived based on five different post-stratification approaches in a swept area method, and then observed that these approaches have little effect on biomass estimates and their precision, owing to well-organized survey designs and homogeneously allocated sampling stations. We were able to utilize decreasing biomass estimates for 15 years as an essential abundance index in the ongoing stock assessment. Notably, examination based on stratification along with longitudinal survey lines indicated that the estimated biomass had decreased in the western survey area, resulting in an eastward shift in the gravity center of Pacific saury distribution after 2010. We recommend biomass estimation in an east–west direction based on longitudinal stratification as an effective measure to develop population dynamics models which reflect westward migration into the fishing grounds around Japanese coastal waters, and to forecast the expected catch during the subsequent fishing period.
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Sejian Veerasamy Maurya Vijai Prakash Naqvi Sayeed M. K. 《Tropical animal health and production》2010,42(8):1763-1770
A study was conducted to assess the effect of combined stresses (thermal and nutritional) on physiological adaptability and
growth performance of Malpura ewes. Twenty-eight adult Malpura ewes (average BW 33.56 kg) were used in the present study.
The ewes were divided into four groups, viz., GI (n = 7; control), GII (n = 7; thermal stress), GIII (n = 7; nutritional stress), and GIV (n = 7; combined stress). The animals were stall-fed with a diet consisting of 60% roughage and 40% concentrate. GI and GII
ewes were provided with ad libitum feeding, while GIII and GIV ewes were provided with restricted feed (30% intake of GI ewes)
to induce nutritional stress. GII and GIV ewes were kept in climatic chamber at 40°C and 55% RH for 6 h/day between 1000 and
1600 hours to induce thermal stress. The study was conducted for a period of two estrus cycles. The parameters studied were
feed intake, water intake, physiological responses (viz., respiration rate, pulse rate, and rectal temperature), body weight,
and body condition scoring (BCS) of ewes. Both thermal and combined stress significantly (P < 0.05) affected the feed intake, water intake, respiration rate, and rectal temperature. The feeding schedule followed in
the experiment significantly (P < 0.05) altered the body weight and BCS between the groups. The results reveal that when compared with thermal stress, nutritional
stress had less significant effect on the parameters studied. However, when both these stresses were coupled, it had a significant
influence on all the parameters studied in these ewes. It can be concluded from this study that when two stressors occur simultaneously,
the total cost may have severe impact on biological function. 相似文献
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Arvind Tiwari Vijai Pal Prachiti Afley Deepak Kumar Sharma Chandra Shekhar Bhatnagar Bhupendra Bhardwaj Ganga Prasad Rai Subodh Kumar 《Tropical animal health and production》2014,46(8):1519-1522
Bovine brucellosis is endemic in many parts of the world including India. The disease diagnosis and surveillance are usually carried out by serological tests, which however have drawbacks. This study was undertaken to evaluate the potential of real-time PCR (RT-PCR) targeting bcsp31 gene for surveillance of bovine brucellosis. A total of 461 samples, which included 408 stored serum and 53 prospective blood samples, were used. It was found that 33 (7.15 %) samples were positive by RT-PCR, whereas 149 (32.32 %) and 132 (28.63 %) were positive by Rose Bengal plate test (RBPT) or standard agglutination test (STAT), respectively. The results of this study suggest that RT-PCR targeting bcsp31 gene carried out on DNA extracted from serum or blood may not be a suitable method for surveillance of brucellosis in bovines. 相似文献
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Ajit Kumar Passari P. C. Lalsiamthari Zothanpuia Vincent Vineeth Leo Vineet Kumar Mishra Mukesh Kumar Yadav Vijai Kumar Gupta Bhim Pratap Singh 《European journal of plant pathology / European Foundation for Plant Pathology》2018,150(4):831-846
In the present study, 129 rhizospheric bacteria isolated from Curcuma longa were screened for their antagonistic potential against six fungal phytopathogens. Among them, 32 isolates that showed significant antagonistic potential were screened for their in vitro plant growth promoting (PGP) traits. The identification of potential isolates was confirmed by 16S rRNA gene sequencing and results revealed Bacillus as the dominant genus followed by Staphylococcus, Pseudomonas, Sphingomonas and Achromobacter. Based on the antagonistic activity and PGP traits; two strains (BPSRB4 and BPSRB14), identified as Bacillus amyloliquefaciens, were further tested for their in vivo PGP and disease suppression potential on Capsicum annuum seedlings under greenhouse conditions. The results demonstrated that BPSRB4 and BPSR14 strains suppress fungal pathogen infection and promote plant growth. Further, the BPSRB4 strain was positive for the production of the phytohormone indole acetic acid (IAA) detected by thin layer chromatography (TLC). In addition, nitrogen fixation and plant growth promotion activity were also confirmed by amplification and sequencing of nitrogen fixation gene (nifH) and ACC (1-aminocyclopropane-1-carboxylate) deaminase (acdS) gene from strains BPSRB4 and BPSRB14. The present study demonstrated that the B. amyloliquefaciens strains BPSRB4 and BPSR14 possess antagonistic activity and PGP potential which could be explored for the development of biofertilizers and biocontrol agents for the growth of chilli seedlings. 相似文献
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Veerasamy Sejian Vijai Prakash Maurya Kamal Kumar Syed Mohammad Khursheed Naqvi 《Tropical animal health and production》2012,45(1):107-116
A study was conducted to assess the effect of multiple stresses (thermal, nutritional, and walking stress) on the adaptive capability of Malpura ewes in terms of changes in physiological mechanisms and blood biochemical changes. The study was conducted for a period of 35 days covering two estrous cycles during summer season (April–May). The ewes were randomly allocated into two groups of 12 animals each, viz., GI (n?=?12; control) and GII (n?=?12; multiple stresses). GI ewes were maintained in the shed while GII ewes were subjected to multiple stresses. GI ewes were maintained in shed while GII ewes were subjected to heat stress by exposing them to 32–44 °C (average 42 °C) and RH of 12–26 % for 6 h from 10:00 to 16:00 h in natural environment. GI ewes were provided with ad libitum feeding while GII ewes were provided with restricted feed (30 % of intake of GI ewes) to induce nutritional stress. Further, GII ewes were subjected to walking stress by forcing them to walk 14 km in two spans between 9:00 and 10:30 h and 15:00 and 16:30 h. Blood collection was done at weekly intervals. Multiple stresses significantly (P?<?0.01) affected body weight, respiration rate, pulse rate, rectal temperature, sweating rate, tri-iodo-thyronine, thyroxine, cortisol, hemoglobin, packed cell volume, glucose, and total protein. The findings from this experiment provide useful information to understand the ideal nutrient requirement for these animals to adapt to such stresses in the semi-arid tropical environment without compromising production. 相似文献
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Vijai Bhadauria Sabine Banniza Li-Xia Wang Yang-Dou Wei You-Liang Peng 《European journal of plant pathology / European Foundation for Plant Pathology》2010,126(1):81-95
Proteomics, the systematic analysis of the proteome, is a powerful tool in the post-genomic era. Proteomics studies have examined
global changes in proteomes of phytopathogenic fungi, oomycetes and their hosts during compatible or incompatible interactions.
This article compiles proteomics reports in order to decipher the molecular mechanisms underlying fungal development (infection-related
morphogenesis), fungal or oomycete—host plant interactions, and phytopathogenesis. 相似文献
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Poli Yugandhar Veronica Nallamothu Madhusmita Panigrahy Sitaramamma Tipireddy Vijai Pal Bhadana Sitapathi Rao Voleti 《Archives of Agronomy and Soil Science》2013,59(14):1975-1987
ABSTRACTA simple screening method is needed to identify rice genotypes tolerant to low phosphorus (P) in soil. Nagina 22 (N22) mutants were classified as gain of function (gof) and loss of function (lof) for tolerance to very low P (soil Olsen P 2.01 mg kg?1). Two gof and two lof mutants were grown in hydroponics and in pot experiment at three P levels (-P, +P and +2P). Comparing response at +P and +2P in hydroponics we found that shoot and root dry weight were significantly less in gof and significantly more in lof in +2P. In pots with soil, tiller number and yield/plant was 3 fold less in gof but 2.5 to 3 fold more in lof and N22 in +2P compared to +P. That 2P can be used to identify low-P tolerant genotypes was validated using 3 low-P tolerant and 3 sensitive varieties whose response to low P soil is well documented. Both shoot and root dry weight was significantly less in +2P than in +P in tolerant and significantly more in sensitive genotypes. Thus screening in hydroponics in +2P can help identify low-P- tolerant genotypes easily and rapidly avoiding field screening. 相似文献
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Rakesh Kumar Saurabh Sharma Swati Sood Munish Kaundal Vijai K. Agnihotri 《Journal of plant nutrition》2017,40(11):1604-1615
A field experiment was conducted to study different manures and inorganic fertilizers effect on damask rose during 2008–2012. The rose essential oil (EO) was obtained by hydro distillation in Clevenger type apparatus and the components in the rose oil were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS). Application of 90:80:90 kg nitrogen: phosphorus: potassium (NPK) ha?1 outshine all other treatments and recorded significantly higher flower and oil yield as compared to control. EO yield was also significantly correlated with flower yield plant?1, number of flowers plant,?1 and flower yield ha?1. The higher percentage of citronellol+nerol was obtained by the application of 120:40:90 kg NPK ha?1. Geraniol (26.2%) was maximum when the plants were fertilized with 90:40:90 kg NPK ha?1. Citronellol+nerol/geraniol ratio was also high in fertilized plots. Furthermore, manure application resulted in a marked improvement in chemical properties (pH, percent organic carbon, available N, P, and K) of the soil. 相似文献
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