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ppt on communication in social insects

ppt on communication in social insects



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  • Your logo
  • Your logo COMMMUNICATION SKILLS OF SOCIALS INSECTS Mathematical modelling on social insects such as honeybees,ants,etc. To know how they use local information to generate complex and functional pattern of communication.
  • INTRODUCTION  Many insects exhibit "social" behaviors (e.g. feeding aggregations, parental care of the young, and communal nest sites).  In a broad sense, any insect that interacts with another member of its own species could be called a social insect.  But as a rule, entomologists do not regard these behaviors as sufficient justification for classifying a species as truly social (i.e. eusocial).  In order to qualify as eusocial, a species must exhibit the following characteristics: View slide
  • TOWER OF HANOI •The tower of Hanoi commonly also known as the "towers of Hanoi", is a puzzle invented by E. Lucas in 1883 Disks are arranged from largest on the bottom to smallest on top placed on a rod, together with two empty rods, the towers of Hanoi puzzle asks for the minimum number of moves required to move the stack from one rod to another, where moves are allowed only if they place smaller disks on top of larger disks. The puzzle with pegs and disks is sometimes known as Reve's puzzle. View slide
  • Ants perform their task into a graph of possible moves and convert that in turn into a maze of hexagons. Having initially allowed a colony of ants to explore the maze and lay down pheromones (short-lived foraging pheromone and long-lasting exploration pheromone), the team then placed food at the end of the maze and filmed the ants as they tried to identify the optimal route through the maze to the food while the team blocked off routes and opened up alternatives.
  • MAZE OF HEXAGON The ants had little problem coping with change. Initially, the insects found the shortest route, scurrying along the outer edge of the maze to the food source. However, when the team blocked this route and opened up another through the middle of the maze, the ants changed course, zigzagging across the maze, perpendicular to their original route until they found the alternative. The team suspects that both pheromones played critical roles, with short-lived foraging pheromone allowing the ants to respond quickly. Here comes your footer  Page 9
  • Bees and math Bees have not studied tessellations theory. However, some of their behavior patterns can be explained mathematically. One such phenomena which mother nature instilled in the bee is the nature to use the least expenditure of energy and materials. The hexagon has the smallest perimeter for a given area. So, when bees are constructing hexagonal prism cells in the hive, they use less wax and do less work to enclose the same space than if tessellating space with prisms of square or triangular bases.
  • COMPARISON Area and Perimeter Formulas A = s^2 P = 4 x s A = 1/2as P = 3 x s A = 1/2a(6s) = 1/2ap P=6xs . Area Area is constant and should be around 36 The area of the three Side = 6 Area = 6 x 6 Side = 9 Area = 1/2 x Side = 3.6 Area = 1/2 polygons should be = 36 9 x 7.79 = 35.05 x 3.5 x 21.6 = 37 approximately similar. i.e, around 36. . Perimeter If the area is equal and we compare the perimeter of the Side = 6 Perimeter = Side = 9 Perimeter = Side = 3.5 Perimeter square, triangle, and 4 x 6 = 24 3 x 9 = 27 = 6 x 3.6 = 21.6 hexagon, the hexagon has the smallest perimeter. Area If the perimeter is equal and Side = 4 Area = 1/2 x we compare the area of the Side = 3 Area = 3 x 3 Side = 4 Area = 1/2 x 1√3 x 6 x 2 = 6√3 = square, triangle, and =9 4 x 2√3 = 4√3 = 6.9 10.4 hexagon, the hexagon has the largest area. . . Perimeter . . . Tessellations Perimeter is constant and Side = 3 Perimeter = Side = 4 Perimeter = Side = 2 Perimeter = is equal to 12 3 x 4 = 12 4 x 3 = 12 2 x 6 = 12
  • VECTOR DANCE  Honeybees have a unique  When the distance of resource communication style called dance location is closer to the hive,forger language. The dance communication bees dance rapidly.the waggle is revealed in detail since CARLVON dance thus have two kind of FRISCH‘S work and the dance of information for food direction and honeybees is a body language to distance to the nectar resource. communicating the resource direction and distance.a forager be seeks flower for her nectar and returns to the hive.when she arouses the other colleagues bees for the location of flowers.she uses her waggle dance by walking in a straight line and wagging her abdomen from side to side.
  • More about bee dance.... by dance Bees communicate language. Bees use dance as a form of communication for distance and direction of food sources or nest sites. 1- Round dance (running in a circle, is performed for close sites)
  • DISTANCE When food is within 50–75 meters of the hive, the scouts dance the "round dance " on the surface of the comb (left). But when the food is farther than 75 meters from th e hive, the scouts dance the "waggle dance" (right). The waggle dance has two components: •a straight run — the direction of which conveys information about the direction of the food •the speed at which the dance is repeated which indicates how far away the food is.
  • Thank You We look for your suggestions and remarks NAME OF PERSON/ ORGANISATION Here comes your footer  Page 16 Suggestions Signature