population density of major insect pest as influenced by spatial arrangement in pechay by ABSTRACT Spatial arrangement in pechay production could be used as an strategic pest management. Three different spacing were used to determine the effects of spatial arrangement in the population density of pechay. The spacing were 2.5 x 5 in‚ 3.5 x 5 in and 5 x 5 in per plant. Collections of insect pests were done starting five days after transplanting and continued every three days until harvest. Damage
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Meinwald‚ Jerrold (1978)‚ Lucibufagins: Defensive steroids from the fireflies Photinus ignitus and P. marginellus (Coleoptera: Lampyridae)‚ The National Academy of Sciences of the USA 6 11. ^ De Cock‚ R.; Matthysen‚ E. (2005)‚ Sexual communication by pheromones in a firefly‚ Phosphaenus hemipterus (Coleoptera: Lampyridae)‚ Animal Behaviour Further reading • Branham‚ M. A.; Wenzel‚ J. W. (2003)‚ "The origin of photic behavior and the evolution of sexual communication in fireflies (Coleoptera: Lampyridae)"
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Biological vs Chemical Pest Control All living things strive to survive‚ but unfortunately the needs of other creatures sometimes conflict with our needs. An example of this conflict is the struggle between pests and humans. Pests are creatures that injure or kill plants or domestic animals‚ transmit disease‚ cause economic damage or are a nuisance in some other way. They eat our food crops or ornamental plants‚ infect plants that are useful to us‚ make us sick by transmitting infectious organisms
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always a bad thing. They control weed growth‚ increase the life in greens. Also there are pesticides made from natural resources. For example‚ (E)-5-Decenol acetate is a Lepidopteron Pheromone that when released attract the males to the females but get confused because they cant find the females(Pesticides).Pheromones’ are a natural chemical released by insects naturally. The Decenol Acetate doesn’t kill the insects‚ but divert them from the plants. Although there
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Rick Gustina Roy McGinnis English 111 - Mon/Wed 2 September 2013 Komodo Dragons and Mojave Rattlesnakes Both being of the reptilian phylum‚ and being the most dominant of that class in their area‚ the Komodo Dragon and Mojave Rattlesnake have seemingly nothing in common other than their physical scaliness. However‚ the similarities between these two animals go much further than mere appearance. Despite their positions on opposites sides of the globe‚ the Komodo Dragon and Mojave Rattlesnake
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ANT COLONY OPTIMIZATION FOR ROUTING IN WIRELESS SENSOR NETWORKS A SEMINAR REPORT Submitted In partial fulfillment for the requirement for the award of the Degree of MASTER OF TECHNOLOGY IN INFORMATION TECHNOLOGY Under the guidance of Submitted By Mr. ASHISH PAYAL MEHAK KHURANA Assistant Professor TABLE OF CONTENTS Chapter
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The desire for the marmots to mate is caused by pheromones. Pheromones are released from the marmots anal scent glands. They have seasonal breeding. As a result Breeding occurs once every year typically around the time there hibernation ends. The gestation period last for five to six weeks at most. As mammals
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Discuss the role of endogenous pacemakers and exogenous zeitgebers in biological rhythms A rhythm is something that is regularly repeated e.g. eating several times a day. These rhythms are repeated over different intervals and they are governed by both internal (endogenous) and external (exogenous) factors. An endogenous pacemaker is something internal that sets the rhythm‚ and an exogenous zeitgeber is something external that affects / sets the rhythm e.g. light. A biological rhythm that
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Ashley Black The Integumentary System Exercise 1: Structures of the Skin Fill in the names of the numbered structures in the diagram in the table below the picture. 1 Hair Shaft|7 Hypodermis| 2 Arrector pilli muscle|8 Dermis| 3 Sebaceous(oil) gland|9 Epidermis| 4 Hair follicle|10 Subpapillary vascular plexus| 5 Eccrine sweat gland|11 Dermal papillae| 6 Hair follicle receptor(root hair plexus)|12 Pore| QUESTIONS: A. How does the skin tan when exposed to ultraviolet
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Background of Research Why is it that women love perfumes as much as men love cars? According to (Smith and Wade‚ 2008) “There are studies that most of women’s reason for loving perfume is because of the pheromones their bodies produce. Often these scents or perfumes trigger the increase of how much pheromone a woman’s body will produce” (p.12) In studies carried out‚ nearly 80% of all women will make a perfume purchase at least each year. Not only does smelling great make a woman feel good about herself
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