Explain the methods of entrainment to food and survival, Biology

Assignment Help:

Methods of entrainment to food and survival advantages

  • Because of weak zeitgeber of light (during winter and summer months where there is very little change in photoperiod, while in autumn, photoperiod decreases rapidly) and only periodic access to food during winter months, it is advantageous for birds to be more strongly entrained to food as a zeitgeber to anticipate its availability
  • Having food as the main zeitgeber also means a longer feeding period in autumn (when day length is rapidly decreasing) than if controlled by light. This enables better fat stores before winter.
  • In spring the birds may stock up on food to facilitate successful reproduction before competitors (other non-resident birds) arrive back.

 


Related Discussions:- Explain the methods of entrainment to food and survival

Explain pasteurization - method of food preservation, Explain Pasteurizatio...

Explain Pasteurization (temperature below 100° C) - method of food preservation? Pasteurization is a heat treatment that kills a part but not all the microorganisms present and

Implementation of nursing care, Implementation of Nursing Care   Admin...

Implementation of Nursing Care   Administration of Appropriate Drugs  If  the surgery is not necessary or if  it is postponed for some time then diuretics and digoxin are

Some species of plant are strongly adapted to pollination, Some species of ...

Some species of plant are strongly adapted to pollination by certain insects.   Characteristics which are regarded as adaptations to pollination by bees are: ( a) white o

Cytokinins - apical dominance, Cytokinins - Apical Dominance Cytokinin...

Cytokinins - Apical Dominance Cytokinins are also involved in the regulation of apical dominance. Wickson and Thimann studied the interaction of cytokinins and auxins in contr

Describe shunts, Q. Describe Shunts? Detection, localization and quanti...

Q. Describe Shunts? Detection, localization and quantification of intracardiac shunts are one of the most important exercises in cardiac catheterization. In most cases a prelim

Man-made disasters- chemical disasters, Chemical disasters arise from harm...

Chemical disasters arise from harmful and potentially hazardous chemicals, which if released of misused can pose a threat to the environmental. Its range depends upon military and

Define the chromosome region, Q. How is the chromosome region where the cen...

Q. How is the chromosome region where the centromere is located called, and how chromosomes classified in the relation to the position of their centromere? The chromosome regio

Ilustrate the binding of atp to actin, Which of the following is true in a ...

Which of the following is true in a skeletal muscle? A. Movement of the cross-bridge occurs only when the myosin head is detached from the actin molecule. B. The binding of

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