Insect Hormones: The Control of Moulting

Series

Biology: Form and Function, Course S203

Language

English

Country

Great Britain

Medium

Video; Videocassette. Standard formats. col. 24 min.

Year of production

1991

Availability

Off-air recording licence
Sale; 1998 sale: £145.00 (+VAT +p&p)

Documentation

Introduces insect anatomy and the various techniques used by insect endocrinologists, using as a case study the tobacco hornworm ‘Manduca sexta’. Explains the events that occur during moulting and shows various aspects of insect anatomy and how ligature experiments can be used to determine both the location of endocrine glands and the time of hormone release. Discusses the role of juvenile hormone and the detailed hormonal changes during the last larval instar and how these are correlated with the caterpillar’s behaviour. Also demonstrates the JH black larval assay. Finally, shows a larva parasitized by ‘Anapantelles congregatus’ and discusses the ways in which the larvae of this wasp alter the host’s hormone levels to their own advantage.

Subjects

Biology

Keywords

anatomy; caterpillars; endocrine system; hormones; insects; larvae; moulting; wasps

Credits

Producer

Andrew Crilly

Production Company

Name

BBC Open University Productions

Distributor

Name

Open University Worldwide

Web

http://www.ouw.co.uk External site opens in new window

Phone

+44 (0) 1908 274066

Address

Walton Hall
Milton Keynes
MK7 6AA

Notes

NB. As of May 2016 Open University Worldwide are no longer distributing DVDs. They have posted this message on their website: ‘Unfortunately Open University Worldwide Limited has decided that product sales are no longer viable given the reduced funding to Higher Education institutions and diminishing demand for the products we have traditionally stocked. At present the Open University Students Association (OUSA) will continue to sell the "Good Study Guide", and we are in discussion with other possible distributors to continue to make The Open University’s products available for purchase. As soon as we have any information on other channels of distribution we will update this notice’. Some products are still available via second hand dealers on Amazon.co.uk