scholarly journals Life Tables ofBactericera cockerelli(Hemiptera: Triozidae) on Tomato Under Laboratory and Field Conditions in Southern Texas

2013 ◽  
Vol 96 (3) ◽  
pp. 904-913 ◽  
Author(s):  
Xiang-Bing Yang ◽  
Yong-Mei Zhang ◽  
Donald C. Henne ◽  
Tong-Xian Liu
Keyword(s):  
Life Tables ◽  
Field Conditions

scholarly journals Age-Dependent Fecundity and Fertility Life Tables of the Predator Brontocoris tabidus (Heteroptera: Pentatomidae) Under Field Conditions

2006 ◽  
Vol 99 (2) ◽  
pp. 401-407 ◽  
Author(s):  
J. C. Zanuncio ◽  
W. P. Lemos ◽  
M. C. Lacerda ◽  
T. V. Zanuncio ◽  
J. E. Serrão ◽  
...  
Keyword(s):  
Life Tables ◽  
Field Conditions ◽  
Age Dependent ◽  
Heteroptera Pentatomidae

scholarly journals Age-Dependent Fecundity and Fertility Life Tables of the Predator Brontocoris tabidus (Heteroptera: Pentatomidae) Under Field Conditions

2006 ◽  
Vol 99 (2) ◽  
pp. 401-407 ◽  
Author(s):  
J. C. Zanuncio ◽  
W. P. Lemos ◽  
M. C. Lacerda ◽  
T. V. Zanuncio ◽  
J. E. Serrão ◽  
...  
Keyword(s):  
Life Tables ◽  
Field Conditions ◽  
Age Dependent ◽  
Heteroptera Pentatomidae

scholarly journals Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions

2019 ◽  
Vol 86 ◽  
Author(s):  
José Edmir Girão Filho ◽  
Luiz Evaldo de Moura Pádua ◽  
Gilson Lages Fortes Portela ◽  
Francinalva de Morais Sousa
Keyword(s):  
Maximum Error ◽  
Life Tables ◽  
Field Conditions ◽  
Reproduction Rate ◽  
Daily Production ◽  
Thermal Requirements ◽  
Degree Day ◽  
Proposed Model ◽  
Time Of Year ◽  
Net Reproduction

ABSTRACT: Thermal requirements and life tables of insects are important tools in the ecological management of pests. Thus, this study aimed to construct age-specific life tables for Aphis craccivora at different times of the year and, based on their thermal requirements, predict the occurrence of adults under field conditions. To that end, aphids of known age were kept in cages over cowpea plants at different times of the year - November 2016 and March, April, and June 2017 - at the Agricultural Sciences Center of the Federal University of Piauí. Parameters of development, fertility, and mortality were observed daily, allowing us to construct age-specific life tables, as well as an accumulated degree-day model to predict adult occurrence. The time of year affected the first and second stages of development of the cowpea aphid, the nymphal and reproductive periods, longevity, the biological cycle, the number of nymphs produced per female, the daily production of nymphs per female, life expectancy (ex), and survival (Lx). However, the fertility life tables showed significant differences only in the net reproduction rate (R0). The proposed degree-day model reached an accuracy of one day or more than the observed value, with a maximum error of 12.9%. We concluded that the proposed model is adequate to predict the occurrence of adults in the field and that the population parameters of A. craccivora in cowpea are negatively affected during November and positively affected in June.

Ichthyotoxicity of the microalga Pseudochattonella farcimen under laboratory and field conditions in Danish waters

2015 ◽  
Vol 116 (3) ◽  
pp. 165-172 ◽  
Author(s):  
NG Andersen ◽  
PJ Hansen ◽  
K Engell-Sørensen ◽  
LH Nørremark ◽  
P Andersen ◽  
...  
Keyword(s):  
Field Conditions

Immobilization of Radionuclides on Iron Canister Material at Simulated Near-field Conditions

2008 ◽  
Author(s):  
Daqing Cui ◽  
Ylva Ranebo ◽  
Jeanett Low ◽  
Vincenzo Rondinella ◽  
Jinshan Pan ◽  
...  
Keyword(s):  
Near Field ◽  
Field Conditions
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