Behaviour of ‘Heterodera’ Species Through the Life Cycle

Synopsis

A field crop of potatoes stunted by attack from ‘Heterodera rostochiensis’ (now Globodera) exemplified the economic importance of this group of nematode pests. By means of high-power cinemicrography, larvae are shown penetrating roots of host plants, cutting a passage through cortical cells and in association with syncytial food cells which form in the plant in response to the nematodes’ saliva. Feeding and the action of the oesophageal pump are shown. The development of a vermiform male is shown in detail by time-lapse and the way he is attracted to the globular female. Females each produce about 300 eggs which hatch en masse only in response to secretions from host-plant roots. The behaviour of larvae within the eggs which leads to hatching is shown in detail at the highest powers of the light microscope.

Language

English

Country

Great Britain

Medium

Video; Videocassette. VHS. b&w. 30 min.

Year of production

1968

Availability

Sale (video - BUFVC); 1996 sale: £30.00 (+VAT +p&p)

Uses

Postgraduates. Degree-course students in zoology and agricultural science *

Subjects

Biology

Keywords

nematodes; parasitic animals

Credits

Director

Chris C Doncaster

Writer

Chris C Doncaster

Contributor

Audrey Shepherd; Chris C Doncaster; Chris Green

Cast

Chris C Doncaster

Distributor

Name

Higher Education Film & Video Library

Email

services@bufvc.ac.uk

Web

http://bufvc.ac. External site opens in new window

Phone

020 7393 1503

Fax

020 7393 1555

Address

c/o British Universities Film & Video Council
77 Wells Street
London
W1T 3QJ

Notes

Catalogue available from British Universities Film & Video Council.

Name

Learning on Screen - the British Universities and Colleges Film and Video Council

Email

services@bufvc.ac.uk

Web

http://bufvc.ac.uk External site opens in new window

Phone

020 3743 2345

Address

York House
221 Pentonville Road
London
N1 9UZ

Notes

The Learning on Screen distribution library is currently only available in part. Please contact us with any individual queries. The two series of InterUniversity History Film Consortium films which make extensive use of archive footage been digitised for free, online viewing by UK HE institutions - see Learning on Screen InterUniversity History Film Consortium Films (qv).