|
|
|
|
|
| Costa,Juan F; Cosio,Walter ; Cardenas,Maritza ; Yábar,Erick ; Gianoli,Ernesto . |
| Insects are attracted to plants by visual and olfactory cues. The quinoa moth, Eurysacca melanocampta Meyrick (Lepidoptera: Gelechiidae), is the main insect pest of the quinoa crop, Chenopodium quinoa Willd. (Chenopodiales: Chenopodiaceae), in the southern Peruvian Andes, causing grain yield losses. The aim of this study was to investigate the behavioural response of adult quinoa moths to olfactory stimuli. Specifically, the objectives of this study were: 1) to determine the capacity of E. melanocampta adults of searching for quinoa plants using plant olfactory cues; 2) to determine the preference of E. melanocampta females for the odours derived from two varieties of quinoa: Amarilla de Marangani and Blanca de Junín; and 3) to assess the attraction of... |
| Tipo: Journal article |
Palavras-chave: Attraction; Chenopodiaceae; Gelechiidae; Searching; Olfactometry; Quinoa. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000100009 |
| |
|
|
| Karp, Larry S.; Costello, Christopher. |
| We study the optimal quota sequence, in a stationary environment, where a regulator and a non-strategic firm have asymmetric information, The regulator is able to learn about the unknown cost parameter by using a quota that is slack with positive probability, It is never optimal for the regulator to learn gradually, In the first period, he either ignores the possibility of learning, or he tries to improve his information, Regardless of the outcome in the first period, he never experiments in subsequent periods. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Quotas; Asymmetric information; Searching; International Relations/Trade; D83; L50. |
| Ano: 2000 |
URL: http://purl.umn.edu/6245 |
| |
|
|
|
