检索结果-南通市图书馆

Circadian rhythms of feeding, oviposition, and emergence of the boll weevil （Coleoptera： Curculionidae）

Insect Science 2006年第6期13卷 461-467页

作者： SHOIL M. GREENBERG j. SCOTT ARMSTRONG MAMOUDOUSETAMOU THOMAS W. SAPPINGTON randy j. coleman TONG-XIAN LIU USDA-ARS-SARC-BIRU Texas A&M University Agricultural Experiment Station Weslaco Texas USDA-ARS-CICGRU Ames Iow USA

Circadian rhythm of feeding, oviposition, and emergence of boll weevil adults were determined at five different photophases （24, 14, 12, 10, and 0 hours） and a constant 27℃ temperature, 65% RH in the laboratory. Squares from Petri dishes, where they were exposed to boll weevil females, were removed and examined for feeding and oviposition punctures every 4 hours during daylight （0700-1900 h） and every 12 h at night （1900-0700 h） over eight consecutive days. Cohorts of randomly selected egg-punctured squares were sampled from ovipositing females at 0700, 1100, 1500, and 1900 during 24 hours and under different photophase treatments, and maintained in Petri dishes at 27 ＋ I℃, 65% RH. Dishes were observed twice daily （1900 and 0700 h） for adults emerging at day or night. Circadian rhythm of oviposition was not affected by the length of the photophase. The boll weevil has round-the-clock circadian rhythm of oviposition, with a daytime preference. We observed that 82.4%-86.0% of the boll weevil eggs were deposited between 0700 and 1900 h, and 14.0%-17.6% between 1900 and 0700 h during a 24-h period. Feeding of boll weevil females in photoperiods 24：0 h （complete light） and 0：24 h （complete darkness） did not significantly change between 0700-1900 h versus 1900-0700 h, while the d .ally cycle of light and darkness in other photoperiods significantly increased the feeding punctures from 0700-1900 compared with 1900-0700 h. The circadian rhythm of emergence depended significantly on the time of oviposition and the length of the photophase. Investigation of boll weevil circadian rhythm provides a better understanding of boll weevil ecology and reveals potential weak links for improving control technologies targeting their reproductive strategies.

关键词： Anthonomus grandis emergence circadian rhythm oviposition photophase

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Survival of boll weevil （Coleoptera： Curculionidae） adults after feeding on pollens from various sources

引用

Insect Science 2007年第6期14卷 503-510页

作者： SHOIL M. GREENBERG GRETCHEN D. j.NES FRANK EISCHEN randy j. coleman j.HN j. ADAMCZYK, j.. TONG-XIAN LIU MAMOUDOU SETAMOU USDA-ARS KSARC-BIRU Weslaco USDA-ARS APMRU College Station USDA-ARS KSARC-Honey Bee Research Unit Department of Entomology Texas AgriLife Research Texas A&M University System Texas A&M University Kingsville Citrus Center Weslaco Texas USA

The survival of overwintering boll weevil, Anthonomus grandis grandis （Boheman）, adults on non-cotton hosts in the Lower Rio Grande Valley （LRGV） of Texas was examined from 2001 to 2006. The success of the Boll Weevil Eradication Program, which was reintroduced into the LRGV in 2005, depends on controlling overwintering boll weevil populations. Laboratory studies were conducted using boll weevil adults that were captured in pheromone traps from September through March. The number of adults captured per trap declined significantly in the field from fall to the beginning of spring （3.5-7.0-fold）. The proportion of trapped males and females did not differ significantly. The mean weight of boll weevil adults captured in September was 13.3 mg, while those of captured adults from November to February were significantly lower and ranged from 6.7 to 7.8 mg. Our results show that boll weevil adults can feed on different plant pollens. The highest longevity occurred when adults were fed almond pollen or mixed pollens （72.6 days and 69.2 days, respectively） and the lowest when they fed on citrus pollen or a non-food source （9.7 days or 7.4 days, respectively）. The highest adult survival occurred on almond and mixed pollens [88.0%-97. 6% after 1st feeding period （10 days）, 78.0%-90.8% after 3rd feeding period （10 days）, 55. 0%-83.6% after 5th feeding period （10 days）, and 15.2%-32.4% after lOth feeding period （10 days）]. The lowest adult survival occurred on citrus pollen [52.0%-56.0% after 1st feeding period （10 days）, 13.3% after 3rd and 5th feeding periods （10 days）, and 0 after 6th feeding period （10 days）]. Pollen feeding is not a behavior restricted to adult boll weevils of a specific sex or physiological state. Understanding how boll weevil adults survive in the absence of cotton is important to ensure ultimate success of eradicating this pest in the subtropics.

关键词： boll weevil Anthonomus grandis grandis Curculionidae subtropics pollen

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Individual consistency in spatiotemporal characteristics of migratory Whimbrels in the East Asian-Australasian Flyway

引用

Avian Research 2024年第3期15卷 308-315页

作者： Siwei An Fenliang Kuang Wei Wu Chris j.Hassell j.nathan T.coleman Zij.ng Gao Xuena Sun Yue Yuan Grace Maglio Kar-Sin K.Leung Xuesong Feng Zhij.n Ma Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering Coastal Ecosystems Research Station of the Yangtze River EstuaryInstitute of Biodiversity ScienceSchool of Life SciencesFudan UniversityShanghai200433China School of Chemistry and Environment Yunnan Minzu UniversityKunming650504China Shanghai Chongming Dongtan Nature Reserve Administration Center ChongmingShanghai202183China Global Flyway Network PO Box 3089BroomeWA 6725Australia Australasian Wader Studies Group BroomeWA6725Australia Queensland Wader Study Group Shailer ParkQLD4128Australia Hong Kong Waterbirds Ringing Group Hong Kong999077China

Many migratory birds exhibit interannual consistency in migration schedules,routes and stopover *** the interannual consistency in spatiotemporal characteristics helps understand the maintenance of migration and enables the implementation of targeted conservation *** tracked the migration of Whimbrel(Numenius phaeopus)in the East Asian-Australasian Flyway and collected spatiotemporal data from individuals that were tracked for at least two *** non-parametric tests were used to compare the interannual variations in the dates of departure from and arrival at breeding/nonbreeding sites,and the inter-annual variation in the longitudes when the same individual across the same *** exhibited a high degree of consistency in the use of breeding,nonbreeding,and stopover sites between *** variation of arrival dates at nonbreeding sites was significantly larger than that of the departure dates from nonbreeding and breeding *** used stopover sites by the same individuals in multiple years were concentrated in the Yellow Sea coast during northward migration,but were more widespread during southward *** stopover duration at repeatedly used sites was significantly longer than that at sites used only *** flying across the Yellow Sea,Whimbrels breeding in Sakha(Yakutia)exhibited the highest consistency in migration routes in both autumn and ***,the consistency in migration routes of Yakutia breeding birds was generally higher than that of birds breeding in *** results suggest that the northward migration schedule of the Whimbrels is mainly controlled by endogenous factors,while the southward migration schedule is less affected by endogenous *** repeated use of stopover sites in the Yellow Sea coast suggests this region is important for the migration of Whimbrel,and thus has high conservation value.

关键词： Consistency Migration route Migration timing Shorebird

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Habitat structure directly affects aggression in convict cichlids Archocentrus nigrofasciatus

引用

Current Zoology 2010年第1期56卷 52-56页

作者： Anthony j. BARLEY Ronald M. coleman Department of Biological Sciences California State University Sacramento California 95819-6077 USA

Aggressive behavior can be an important factor in determining how animals use and divide space and resources. Previous studies have shown that aggression in fishes can be influenced by a variety of factors, including water temperature and resource levels. In this study, we tested if the amount of habitat structure in the environment affected aggression levels in female convict cichlids Archocentrus nigrofasciatus. We performed a laboratory experiment in which we placed female convict cichlids into an aquarium with low or high amounts of habitat structure and monitored the dominant female＇s behavior toward the subordinate female. Aggressive behavior in convict cichlids primarily consists of chases and bites. We found that the total time the dominant female spent chasing the subordinate female was greater when there was a low amount of habitat structure as compared to when there was a high amount of habitat structure. We also found that both the average duration of a chasing bout and the number of bites directed at the subordinate fish increased when there was a low amount of structure, but the number of chases did not. These results indicate that increased habitat structural complexity decreases aggressive behavior in convict cichlids [Current Zoology 56 （1）： 52-56, 2010].

关键词： Neotropical Life-history Female-female competition Fish Resource competition

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Comparative morphometric and chemical analyses of phenotypes of two invasive ambrosia beetles （Euwallacea spp.） in the United States

引用

Insect Science 2017年第4期24卷 647-662页

作者： Yigen Chen Paul L. Dallara Lori j. Nelson Tom W. coleman Stacy M. Hishinuma Daniel Carrillo Steven j. Seybold Department of Entomology and Nematology University of California Davis USA USDA Forest Service Pacific Southwest Research Station Davis USDA Forest Service Forest Health Protection San Bemardino California USA Tropical Research and Education Center University of Florida Homestead Florida USA

The polyphagous shot hole borer （PSHB）, Euwallacea sp., was first detected in 2003 in Los Angeles County, California, USA. Recently, this invasive species has become a maj.r pest of many hardwood trees in urban and wildland forests throughout southern California. PSHB is nearly identical in morphology and life history to the tea shot hole borer （TSHB）, Euwallaceafornicatus, an invasive pest of hardwoods in Florida, USA and many other parts of the world. However, molecular studies have suggested that the taxa are different species. We conducted morphometric and chemical analyses of the pheno- types of Euwallacea sp. collected in southern California （Los Angeles County） and E. fornicatus collected in Florida （Miami-Dade County）. Our analyses indicated that PSHB has 3 larval instars. The third larval instar was separated from the first 2 instars by head capsule width with 0 probability of misclassification. The body length, head width, and pronotal width of PSHB adult males were significantly less than those of females. Head width and pronotal width of female PSHB were significantly less than those of female TSHB. In contrast, body length, and ratio of body length to pronotal width of female PSHB were significantly greater than those of female TSHB. However, females of these 2 species could not be separated completely by these 4 measurements because of the overlapping ranges. Cuticular hydrocarbons detected in both species were exclusively alkanes （i.e., n-alkanes, monomethylalkanes, dimethylalkanes, and trimethylalkanes）. Cuticular hydro- carbon profiles of PSHB males and females were similar, but they both differed from that of TSHB females. Cuticular hydrocarbons of PSHB were predominantly internally branched dimethylalkanes with backbones of 31 and 33 carbons, whereas cuticular hydro- carbons of TSHB females were dominated by internally branched monomethylalkanes and dimethylalkanes with backbones of 28 and 29 carbons. Multiple compounds within these classes appear

关键词： cuticular hydrocarbons Euwallaceafornicatus larval instars polyphagousshot hole borer Scolytidae tea shot hole borer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Reproductive potential of field-collected overwintering boll weevils （Coleoptera： Curculionidae） fed on pollen in the laboratory

引用

Insect Science 2009年第4期16卷 321-327页

作者： S. M. Greenberg G. D. j.nes j. j. Adamczyk, j.. F. Eischen j. S. Armstrong R. j. coleman M. Setamou Tong-Xian Liu USDA-ARS-KSARC-BIRU 2413 E. Hwy. 83 Weslaco Texas 78596 APMRU-SPA-ARS-USDA College Station Texas 77845 USDA- ARS-KSA RC-Honey Bee Research Unit Texas A&M University Kingsville Citrus Center Weslaco TX 78596 Department of Entomology Texas AgriLife Research Texas A&M University System Weslaco Texas 78596 USA

The reproductive potential of overwintering boll weevil, Anthonomus grandis grandis （Boheman）, females collected from pheromone traps in September, November and j.nuary, fed for 1, 3, and 5 weeks on plant pollens, and then provided cotton squares, was determined in the laboratory at 27 ~ I^C, 65% RH, and a photoperiod 13 ： 11 （L ： D） h. Duration of pollen feeding by overwintering boll weevils did not significantly influence egg and feeding punctures, or puncture ratios （egg to total punctures） for any of the three months of parent weevil collections when provided cotton squares on a daily basis. However, punctures and puncture ratios are significantly different when comparing mean data between months of boll weevil collections. When boll weevils were provided with cotton squares daily, the pre-ovipositional periods of female parents captured in September, November and j.nuary were 5, 9 and 14 days, respectively. The rate of eggs by females was significantly lower during November and j.nuary than September. Female parents collected in September produced a significantly higher percentage of eggs yielding adult progeny than those collected in November and j.nuary. Life table parameters indicated that net reproductive rate （Ro） of boll weevil females collected in September was 1.2- fold higher than those collected in November and 10.7-fold higher than those collected in j.nuary. Except for testes size, no differences in male reproductive parameters were observed during the cotton-free period compared with males captured during mid-cotton （j.ne）. The number of oocytes in the ovarioles and the number of ooeytes containing yolk were significantly lower during September, November and j.nuary compared with j.ne. The reproductive potential ofoverwintering boll weevil females collected in different months is an important consideration in determining the success of any control strategy.

关键词： Anthonomusgrandisgrandis overwintering boll weevil reproductive pollen

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Expanding the SDI environment:comparing current spatial data infrastructure with emerging indoor location-based services

引用

International j.urnal of Digital Earth 2016年第6期9卷 629-647页

作者： David j.coleman Abbas Raj.bifard Kris W.Kolodziej Department of Geodesy and Geomatics Engineering University of New BrunswickFrederictonCanada Centre for Spatial Data Infrastructures and Land Administration Department of Infrastructure EngineeringThe University of MelbourneMelbourneAustralia Indoor LBS LLC New YorkNYUSA

The authors compare key elements of the emerging field of Indoor Location-Based Services(Indoor LBS)to those currently found in spatial data infrastructure(SDI)*** a brief review of SDIs and Location-Based Services,the corresponding drivers,characteristics and emerging issues within the field of Indoor LBS are introduced and discussed.A comparative framework relates the two in terms of the criteria‘People’,‘Data’,‘Technologies’,‘Standards’and‘Policies/Institutional Arrangements’.After highlighting key similarities and differences,the authors suggested three areas–definition of common framework datasets in Indoor LBS,more effective use of volunteered geographic information by SDI programs and development of appropriate privacy policies by both communities–that may benefit from sharing‘lessons learned’.

关键词： Spatial data infrastructure location-based services indoor positioning mapping geospatial

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The thermal and storage stability of bovine haemoglobin by ultraviolet-visible and circular dichroism spectroscopies

引用

j.urnal of Pharmaceutical Analysis 2016年第4期6卷 242-248页

作者： Ruchir Bhomia Vivek Trivedi Nichola j.coleman j.hn C.Mitchell School of Science University of GreenwichCentral Avenue

The effects of temperature,pH and long-term storage on the secondary structure and conformation changes of bovine haemoglobin（bHb） were studied using circular dichroism（CD） and ultraviolet-visible（UV-vis） *** network software was used to deconvolute the CD data to obtain the fractional content of the five secondary *** storage stability of bHb solutions in pH 6,7 and8 buffers was significantly higher at 4 ℃ than at 23 ℃ for the first 3 days.A complete denaturation of bHb was observed after 40 days irrespective of storage temperature or *** bHb solutions were also exposed to heating and cooling cycles between 25 and 65 ℃ and structural changes were followed by UVvis and CD *** experiments demonstrated that α-helix content of bHb decreased steadily with the increasing temperature above 35 ℃ at all pH *** loss in a-helicity and gain in random coil conformations was pH-dependent and the greatest under alkaline ***,there was minimal recovery of the secondary structure content upon cooling to 25 ℃.The use of bHb as a model drug is very common and this study elucidates the significance of storage and processing conditions on its stability.

关键词： Bovine haemoglobin Circular dichroism Thermal stability Storage stability Ultraviolet-visible spectroscopy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

SOME DYNAMIC BEHAVIOURS OF TaS3 AND ITS POSSIBLE ELECTRONIC APPLICATIONS

引用

Science China Mathematics 1986年第10期29卷 1085-1095页

作者：陈倜嵘,朱维乐,P.D.coleman,j.TUCKER Chengdu Institute of Radio Engineering Chengdu Institute of Radio Engineering University of Illinois U.S.A. University of Illinois U.S.A.

Some dynamic behaviours of quasi-1-dimensional conductor TaS3under charge density waves （CDW's） state have been carefully examined. The presence of hysteresis and phase shift in the response of CDW's to ac signals has been revealed for the first time. It has been demonstrated that the strong nonlinear electrical properties of CDW's can be used in electronic circuit to perform a number of nonlinear transformations, such as frequency conversion, modulation and heterodyne detection. This makes the 1-dimensional conductor a very attractive material for the bulk effect electronic device.A circuit model has been proposed to explain phenomenologically the observed effects.

关键词： SOME DYNAMIC BEHAVIOURS OF TaS3 AND ITS POSSIBLE ELECTRONIC APPLICATIONS CDW MHz 卜尸 TTF

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Maternal body condition during latepregnancy is associated with in utero development and neonatal growth of Holstein calves

引用

j.urnal of Animal Science and Biotechnology 2021年第3期12卷 984-994页

作者： A.S.Alharthi D.N.coleman I.A.Alhidary M.M.Abdelrahman E.Trevisi j.j.Loor Department of Animal Production College of Food and Agriculture SciencesKing Saud UniversityRiyadh 11451Saudi Arabia Department of Animal Sciences and Division of Nutritional Sciences University of IllinoisUrbanaIL 61801USA Department of Animal Sciences Food and Nutrition(DIANA)Faculty of AgricultureFood and Environmental ScienceUniversitàCattolica del Sacro Cuore29122 PiacenzaItaly

Background:Nutritional management in the dry period can alter body condition score(BCS)in dairy cows,a subj.ctive measure of body *** such,differences in BCS during late-pregnancy not only mirror nutrient utilization by fat depots,but also can play important roles on the metabolic and hormonal *** investigated the association between cow BCS during late-pregnancy on developmental parameters and blood variables of neonatal ***-nine multiparous Holstein cows were retrospectively divided by prepartal BCS into normal BCS≤3.25(NormBCS;3.02±0.17,n=30)or high BCS≥3.75(HighBCS;3.83±0.15,n=19)*** samples were collected from cows at−10 d relative to *** weight,hip and wither height,hip width and body length were measured at birth and weekly through weaning(42 d of age)and until 9 weeks of *** blood samples were collected from the j.gular vein at birth(before receiving colostrum,0 d),24 h after first colostrum and at 7,21,42 and 50 d of *** data were subj.cted to ANOVA using the mixed procedure of *** statistical model included day,BCS,and their ***:Dry matter intake(kg/d or%of body weight)during the last 4 weeks of pregnancy was lower(P≤0.06)in HighBCS *** concentrations of fatty acids,ceruloplasmin,and nitric oxide were greater overall(P0.05)in daily starter intake and average daily gain due to maternal ***:Overall,results highlight an association between BCS during late-gestation on in utero calf development and postna

关键词： Metabolism Neonate Nutritional programming Transition cow

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：