said to be stable structurally and chemically thus is considered an outstanding medium for soil organisms such as bacteria‚ fungi‚ protozoa‚ nematodes‚ arthropods‚ and earthworms. The potential habitats of these soil invertebrates are the spaces within the surface litter‚ holes in soil aggregates and pore spaces‚ root channels‚ etc. Soil arthropods are vital link in the food chain as decomposers. They play important roles in controlling the rate of litter decomposition and in altering nutrient and
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B04 Wong Lap Jack A0126596U Convergence or Coincidence??? Evolutionary convergence is the process by which unrelated or distantly related organisms of different lineages evolve similar smorphology‚ organs‚ and adaptations‚ but that were not present in the last common ancestor of those groups. Evolutionary convergence involving unrelated organisms living in similar environments but in different places or even in different environments. Similar or different environments have several challenges
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poriferans e. They are hollow-bodied animals 6. arthropods f. They are pore – bearing animals 7. worms g. animals with backbone 8. coelenterates h. animals without backbone D. 1. Arachnids a. worms having unsegmented bodies 2. insects b. worms having segmented bodies 3. crustaceans c. worms with flat bodies 4. myriapods d. arthropods with 8 legs 5. platyhelminthes e. arthropods with 6 legs 6. annelids f. arthropods with 10 legs 7. nematods g. more than 10 legs
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Insect Repellent Background of the study Rainy season here in the Philippines means bug bites and bug-borne diseases. Diseases like malaria‚ dengue fever‚ yellow fever and such are caused by a bite of an infected arthropod. There are several ways of getting rid of these pesky arthropods and the most common way is by using bug sprays. Bug sprays on the market – including the ones with DEET (diethyltoluamide) – have been deemed safe if used as directed. DEET is an active ingredient in many insect
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many there were of each. Introduction: Antonio Berlese was an Italian entomologist. He worked on pest insects (arthropods)‚ usually those of fruit trees. Arthropods are the most successful animals on the planet. They make up over three-fourths of all currently known living and fossil organisms. But‚ many still remained undocumented. Berlese funnels are used for extracting arthropods from soil and litter samples such as our leaf litter. They are supposed to prove that insects that normally live
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Insects are the most successful animal group. They are extremely diverse and abundant. They are present in the sea‚ in freshwater‚ on land and in the air. They occupy every ecological niche. Arthropods are not only extremely diverse but are also numerous as individuals. There are approximately 200 million insects for every human being on the Earth.(1) They have a huge impact on humans and our activities. They are pests of both food and animals‚ and are responsible for disease transmission. They also
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Introduction Forensic entomology is used to determine such crimes as murder‚ suicide‚ and other criminal acts by examining various insects instead of using human tissues. This forensic tool is used to determine the postmortem interval of a corpse and the cause of death of a corpse when all other forms of human evidence (human blood‚ tissues‚ hair‚ etc.) are not present at the scene. Forensic entomologists prefer using insects to determine these factors of death because the insects produce similar
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Dengue * Ebola * Lassa * Marburg * Yellow Fever VHFs Carriers and Transmission Most VHFs viruses naturally reside in an animal reservoir host or arthropod vector. They totally depend on the hosts for replication and survival. Usually rodents and arthropods are the main reservoirs for VHFs viruses. Notoriously arthropods and mosquitoes are the vectors of some of the illnesses. Viruses causing hemorrhagic fever most commonly occur in tropic areas of the world. VHFs are initially
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Spiders (order Araneae) are air-breathing arthropods that have eight legs‚ and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other groups of organisms.[1] Spiders are found worldwide on every continent except for Antarctica‚ and have become established in nearly every habitat with the exception of air and sea colonization. As of 2008‚ approximately 40‚000 spider species‚ and 109 families have been recorded by
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insects and mammals which we share this earth with has continuously evolved‚ allowing us to discover more families and species of arthropods and also their importance to both human and veterinary life. Within these discoveries entomologist have learned of the vectors and different ways of transmission from parasites to their host. For those of the parasites that are arthropods some of them have a medical importance and some don’t; but of those which do two of the very important genus include the mosquito
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