| dc.contributor.advisor | Prof. Dr. Md. Alamgir Hossain | |
| dc.contributor.author | AMIR HOSSAIN, MD. | |
| dc.date.accessioned | 2022-04-23T04:12:49Z | |
| dc.date.available | 2022-04-23T04:12:49Z | |
| dc.date.issued | 2014-12 | |
| dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/550 | |
| dc.description | The population of Bangladesh is increasing tremendously day by day and the people
are heavily suffering from the need of food, specially proteinous food. Country bean
(Lablab purpureus Linn.) is a common and protein rich vegetable grown all over the
country. Locally it is known as “sheem” and is widely cultivated during the winter
season in Bangladesh. Its seed contains 20 to 28% crude protein (Cook et al., 2005) and
also appreciable amount of vitamins, calcium, phosphate, sulphur and sodium (Gopalan
et al., 1982). Its cultivation is wide spread ranging from homestead to the road side
areas, borders of agricultural fields. So, country bean is also known as income
generating crop. Besides, it is also important in the atmospheric nitrogen fixation
(Kalra, 1979). Both young pods and mature seeds are delicious food for the people of
Bangladesh. | en_US |
| dc.description.abstract | A detailed research work was carried out in the laboratory of the Department of
Entomology, HSTU, Dinajpur to study the life history and predation efficiency of
Menochilus sexmaculatus (Coccinellidae: Coleoptera) on bean aphid, Aphis craccivora
Koch. Aphididae: Homoptera during February to April 2014. Mating usually took place
within 3 to 4 days after emergence of the beetles. The pre-oviposition and oviposition
periods were found to vary from 3 to 6 days and 23 to 35 days respectively. The
number of eggs deposited per female ranged from 300 to 400 in their life time. The
eggs hatched within 2 to 3 days and the hatchability/viability of eggs varied from 92.98
to 98.78. The 1‘, 2", 3 and 4" larval instars lasted for 2.29, 2.58, 3.29 and 3.05 days
respectively. The total duration from egg to adult was completed within 15 to 23 days.
The average longevity of male was 34.29 days while female beetle was 37.52 days. The
predation efficiency of larvae increased gradually from 1* instar to 3 instar and then
sharply peaked in 4" instar. The average predation rate of 1%, 24, 3 and 4" instar
larvae were 4.82, 26.88, 64.29 and 93.88 aphids, respectively. They consumed on an
average 189.88 aphids during their entire larval period. The female beetle preyed on
more aphids than male. The total consumption rate of male and female beetles varied
from 1034 to 1097 aphids and 1162 to 1266 aphids, respectively. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | HAJEE MOHAMMOD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR | en_US |
| dc.subject | Biology, | en_US |
| dc.subject | bean aphid, | en_US |
| dc.subject | Menochilus sexmaculatus, | en_US |
| dc.subject | Functional response. | en_US |
| dc.title | BIOLOGY AND PREDATION EFFICIENCY OF MENOCHILUS SEXMACULATUS (COLEOPTERA: COCCINELLIDAE) ON BEAN APHID | en_US |
| dc.type | Thesis | en_US |
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