Posted on: 02 March, 2017
Author: Alexander P
The wild rabbit is a gregarious species which forms social pheromones — colonies — occupying their own warren systems and grazing grounds. Colonies consist of sepa- rate groups each of whi... The wild rabbit is a gregarious species which forms social pheromones — colonies — occupying their own warren systems and grazing grounds. Colonies consist of sepa- rate groups each of which connes its activities to a group territory. Groups are made up of a few males and females among which a social hierarchy develops separately for each sex. The pheromone dominance hierarchy typical for the rabbit is indeed largely...
Posted on: 02 March, 2017
Author: Alexander P
Even slight differentiation between the respective pheromones by Marble and Wardle females was surprising because these populations are separated by a distance of only 20 miles over which tridens is c... Even slight differentiation between the respective pheromones by Marble and Wardle females was surprising because these populations are separated by a distance of only 20 miles over which tridens is continuously distributed. The extremely strong discrimination between Marble and Wardle males by females of Swan and Rodgers indicated that the volatiles produced by males of the two populations were even more different than could have been suspected from the...
Posted on: 02 March, 2017
Author: Alexander P
Verification of the interaction of the best pheromones and stridulation has been shown for Dendroctonus pseudotsugae (Rudinsky and Michael 1972). Males stridulate at or near the entrance to a female-o... Verification of the interaction of the best pheromones and stridulation has been shown for Dendroctonus pseudotsugae (Rudinsky and Michael 1972). Males stridulate at or near the entrance to a female-occupied gallery to produce a recog- nizable ‘courtship’ sound, distinguishable in oscilloscope traces from distress sounds. An identical sound is produced on exposure to frontalin, 3-methyl-2-cyc- lohexen-1-one (MCH) and transverbenol, all female-produced pheromones (table 8.1). A D. pseudotsugae female is able...
Posted on: 02 March, 2017
Author: Alexander P
The maximum distance over which a ‘receiver’ insect can orient to pheromone emitted by a ‘sender’ insect depends upon many factors including: 1) pheromone emission rate of the ... The maximum distance over which a ‘receiver’ insect can orient to pheromone emitted by a ‘sender’ insect depends upon many factors including: 1) pheromone emission rate of the sender; 2) behavioral threshold for response to the pheromone by the receiver; 3) wind velocity; 4) length of time the sender releases pheromone; 5) ight speed of the receiver. The first three factors establish the foundation for estimating the theoretical maximum distance of...
Posted on: 02 March, 2017
Author: Alexander P
Different patterns of pheromone distribution of sympatric genetically related species, capable of breeding under laboratory conditions, assist speciation. Young rabbits still at nestling stage, when g... Different patterns of pheromone distribution of sympatric genetically related species, capable of breeding under laboratory conditions, assist speciation. Young rabbits still at nestling stage, when given the choice between articial nests with and without rabbit odor, display apreference for the nests which had the scent of their own species (Gambale and Dudzinski, unpublished). Specific odor of Pheromones There is ample evidence that when animals enter the area of a strange population they can detect...
Posted on: 12 December, 2016
Author: Summit Lee
Sustainability is no longer an option; it’s a necessity. Industries face pressure from local, state, and federal regulations for environmental compliance with waste generation and management. ... Sustainability is no longer an option; it’s a necessity. Industries face pressure from local, state, and federal regulations for environmental compliance with waste generation and management. But sustainability is about more than just rules and restrictions. Intelligent, progress-minded companies understand the ecological importance, as well as the financial benefits, of optimizing their supply chain for sustainability. At January Environmental, environmental excellence isn’t a new-fangled “green” promise. It’s something they've always done, and something...
Posted on: 21 October, 2016
Author: mohamed shaker
There are so many different ways to use green energy in your home that you'll be shocked by how simple and cost-effective it can be. The intent of this article is to provide you with different methods to use green energy at home and benefit from it. Switch to a solar water heater to heat your pools, showers, hot tubs and kitchen faucets to save money. Heating water with electricity or natural gas is not very efficient, but solar water heaters harness energy from the sun to keep water at a steady temperature. Some of these upgrades, while more expensive...
Posted on: 08 October, 2016
Author: Kelly Page Smith
See 5 of the most common pests that inhibit the territory of New England and read my tips how to deal with them in an environment friendly way. New England has an abundance of beautiful homes, booming businesses, and is a wonderful place to live and pursue a career. Unfortunately, however, there are many common pests that also find New England an attractive place to make their home, and unless you enlist some professional help from a reputable New England pest control company, those "unwanted guests" could be with you for some time. Pest control experts in the area will...
Posted on: 03 October, 2016
Author: Lauren-Johnson
Flowers can last for more than 4 days if properly care is been taken. Also, the flower arrangement lasts for more than 4 to 7 days that also depends on the flowers used and the care they receive. However, not everyone know how well to take care of flowers. We make it simpler for you with some tips to take care of blooms and gifts that you receive from someone special. Since the beginning of human civilization, flowers have been viewed as graceful, beautiful and fragrant and have been an inspiration for beauty, poetry, song and dance and decoration. However,...
Posted on: 03 October, 2016
Author: Leo Alvin Alexander
Learn more about how bottled water is helping in the destruction of the environment and how it contributes to the big problem that is global warming. If any of the people who invented water piping and filtration systems would come back from their graves today, they would probably be surprised at how humanity has somehow taken two steps back as regards water management.Here we are, possessing advanced knowledge in harvesting water that were previously inaccessible to communities, and bringing them to where they could be treated to become potable. And yet, we have relinquished control of water systems to corporate...