Pheromones serving functions other than reproduction, Biology

Assignment Help:

Pheromones Serving Functions Other than Reproduction

Besides sexual responses as described above pheromones mediate several other types of behaviour. Alarm pheromones have been found in termites and bees. The termite soldiers liberate alarm pheromones attracting (communicating alarm signals) the aggressive workers that participate in attacking the intrusive individuals. Trait pheromones secreted by insects help social integrity during migration of colonies by orienting along an invisible chemical trail that has been laid out by one or more conspecific insects. Both aerial land terrestrial trails are possible. Some species of ants and termites deploy trait pheromones in the recruitment of workers to food sources. Aggregate pheromones make it possible for both sexes to aggregate.

They are produced by members of both sexes. Pheromone-mediated aggregation helps to aggregate insects for feeding, protection, reproduction etc. A pheromone, 2-methoxy-5- ethylaphenol is produced from faeces of the migratory locust, Locusta migratoria migratorioides. The pheromone causes the young hoppers to aggregate and is also associated with the induction of morphological and physiological changes that result in the transformation of the hoppers to the migratory phase. In cockroaches also, the pheromones released from various surfaces of the body and from the faeces cause aggregation. In the protozoan Dictyostelium discoideum (amoebae, also known as cellular slime molds) the amoebae release pulses of a pheromone, which has been identified as cyclic 3'-5'AMP resulting in the aggregation.


Related Discussions:- Pheromones serving functions other than reproduction

Phylum Protozoa, Make a detailed study on Phylum Protozoa taking an example...

Make a detailed study on Phylum Protozoa taking an example with clear labeled diagrams.

What are the hormones secreted by the neurohypophysis, Q. What are the horm...

Q. What are the hormones secreted by the neurohypophysis? What are their respective functions? The neurohypophysis secretes the antidiuretic hormone (ADH) and oxytocin. Oxytoci

Biodiversity and economics, With the survival and well-being of humans bein...

With the survival and well-being of humans beings so heavily dependent on biodiversity, its economic value assumes considerable importance. For instance the economic value of ecosy

What do you mean by insect control, Q. What do you mean by Insect control? ...

Q. What do you mean by Insect control? The insects can breed and hide in garbage and other places where there is availability of waste materials. The cockroach lives and breed

How does the contraceptive diaphragm work, How does the contraceptive diaph...

How does the contraceptive diaphragm work? What are the limitations of this contraceptive method? The contraceptive diaphragm is an artifact made of latex or plastic that when

Name the rich source of aerobic bacteria, 1. Biogas is produced by the acti...

1. Biogas is produced by the activity of aerobic bacteria on animal waste 2. Methanobacterium is an aerobic bacterium found in rumen of cattle 3. Biogas, commonly called goba

Oligosaccharides, OLIGOSACCHARIDES They are small-sized polymers of ...

OLIGOSACCHARIDES They are small-sized polymers of monosaccharides having 2 - 6 simple sugars, occasionally upto 9 - 10. Oligosaccharides are soluble in water, sweet to t

What is a population, What is a population? The population is a set of ...

What is a population? The population is a set of individuals of the same species found in a given place in a given time.

Explain fermented vegetable foods, Normal 0 false false fal...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Explain law of segregation, Which of the below terms laws best describes th...

Which of the below terms laws best describes the statement: Members of a homologous (pron: ho-MOL-eh-gus) pair of genes are separated at the time of meiosis (pron: my-O-sis) o

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd