The Resource Reproduction in the Red Algae, (online streaming)
Reproduction in the Red Algae, (online streaming)
Resource Information
The item Reproduction in the Red Algae, (online streaming) represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in Randwick City Library.This item is available to borrow from 1 library branch.
Resource Information
The item Reproduction in the Red Algae, (online streaming) represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in Randwick City Library.
This item is available to borrow from 1 library branch.
- Summary
- Reproduction in the red algae is unique. No flagellated stages are ever formed, and it is generally assumed that the various reproductive spores are inert. This video demonstrates that spores in many species are actively motile, either by gliding or amoeboid activity. This limited power of movement may turn out to be of considerable significance in survival strategies (e.g. dispersion, optimization of a germination site).. Sexual reproduction is also unique. The video briefly reviews the three-phase life cycle of red algae and then illustrates how sexual reproduction occurs. After release, male spermatia are passively carried to receptive female hairs, the trichogynes. Once attached, spermatia undergo a cycle of nuclear division (mitosis) without cell division. Then the wall between spermatium and trichogyne erodes away to form a fertilization pore. A little later, the two nuclei move through the pore into the trichogyne. We demonstrate that the behavior of the two nuclei is quite different. One (not always the first to emerge) moves toward the female cell for fertilization; the other moves toward the tip of the trichogyne where it appears to play no further role in reproduction. Thus, the two nuclei are subtly differentiated so as to interact with the motile systems of the trichogyne in different fashion.
- Language
- eng
- Extent
- 1 online resource (streaming video file) (21 minutes):
- Note
-
- In Process Record
- Title from title frames
- Film
- Label
- Reproduction in the Red Algae
- Title
- Reproduction in the Red Algae
- Language
- eng
- Summary
- Reproduction in the red algae is unique. No flagellated stages are ever formed, and it is generally assumed that the various reproductive spores are inert. This video demonstrates that spores in many species are actively motile, either by gliding or amoeboid activity. This limited power of movement may turn out to be of considerable significance in survival strategies (e.g. dispersion, optimization of a germination site).. Sexual reproduction is also unique. The video briefly reviews the three-phase life cycle of red algae and then illustrates how sexual reproduction occurs. After release, male spermatia are passively carried to receptive female hairs, the trichogynes. Once attached, spermatia undergo a cycle of nuclear division (mitosis) without cell division. Then the wall between spermatium and trichogyne erodes away to form a fertilization pore. A little later, the two nuclei move through the pore into the trichogyne. We demonstrate that the behavior of the two nuclei is quite different. One (not always the first to emerge) moves toward the female cell for fertilization; the other moves toward the tip of the trichogyne where it appears to play no further role in reproduction. Thus, the two nuclei are subtly differentiated so as to interact with the motile systems of the trichogyne in different fashion.
- Cataloging source
- VDU
- Characteristic
- videorecording
- Date time place
- Originally produced by Cytographics in 2000
- Language note
- In English
- http://library.link/vocab/relatedWorkOrContributorName
-
- Cytographics (Firm)
- Kanopy (Firm)
- Runtime
- 20
- http://library.link/vocab/subjectName
- Biology
- Technique
- live action
- Label
- Reproduction in the Red Algae, (online streaming)
- Note
-
- In Process Record
- Title from title frames
- Film
- Antecedent source
- unknown
- Carrier category
- online resource
- Carrier category code
-
- cr
- Carrier MARC source
- carrier
- Configuration of playback channels
- unknown
- Content category
- two-dimensional moving image
- Content type code
-
- tdi
- Content type MARC source
- rdacontent
- Control code
- kan1238408
- Dimensions
- unknown
- Extent
- 1 online resource (streaming video file) (21 minutes):
- File format
- unknown
- Form of item
- online
- Level of compression
- unknown
- Media category
- computer
- Media MARC source
- rdamedia
- Media type code
-
- c
- Medium for sound
- other
- Other physical details
- digital, .flv file, sound
- Publisher number
- 1238408
- Quality assurance targets
- not applicable
- Reformatting quality
- unknown
- Sound
- sound
- Sound on medium or separate
- sound on medium
- Specific material designation
-
- remote
- other
- System control number
- (OCoLC)956908488
- System details
- Mode of access: World Wide Web
- Video recording format
- other
- Label
- Reproduction in the Red Algae, (online streaming)
- Note
-
- In Process Record
- Title from title frames
- Film
- Antecedent source
- unknown
- Carrier category
- online resource
- Carrier category code
-
- cr
- Carrier MARC source
- carrier
- Configuration of playback channels
- unknown
- Content category
- two-dimensional moving image
- Content type code
-
- tdi
- Content type MARC source
- rdacontent
- Control code
- kan1238408
- Dimensions
- unknown
- Extent
- 1 online resource (streaming video file) (21 minutes):
- File format
- unknown
- Form of item
- online
- Level of compression
- unknown
- Media category
- computer
- Media MARC source
- rdamedia
- Media type code
-
- c
- Medium for sound
- other
- Other physical details
- digital, .flv file, sound
- Publisher number
- 1238408
- Quality assurance targets
- not applicable
- Reformatting quality
- unknown
- Sound
- sound
- Sound on medium or separate
- sound on medium
- Specific material designation
-
- remote
- other
- System control number
- (OCoLC)956908488
- System details
- Mode of access: World Wide Web
- Video recording format
- other
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<div class="citation" vocab="http://schema.org/"><i class="fa fa-external-link-square fa-fw"></i> Data from <span resource="http://link.randwick.nsw.gov.au/portal/Reproduction-in-the-Red-Algae-online/H7D4QYQ8wrI/" typeof="Book http://bibfra.me/vocab/lite/Item"><span property="name http://bibfra.me/vocab/lite/label"><a href="http://link.randwick.nsw.gov.au/portal/Reproduction-in-the-Red-Algae-online/H7D4QYQ8wrI/">Reproduction in the Red Algae, (online streaming)</a></span> - <span property="potentialAction" typeOf="OrganizeAction"><span property="agent" typeof="LibrarySystem http://library.link/vocab/LibrarySystem" resource="http://link.randwick.nsw.gov.au/"><span property="name http://bibfra.me/vocab/lite/label"><a property="url" href="http://link.randwick.nsw.gov.au/">Randwick City Library</a></span></span></span></span></div>
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<div class="citation" vocab="http://schema.org/"><i class="fa fa-external-link-square fa-fw"></i> Data from <span resource="http://link.randwick.nsw.gov.au/portal/Reproduction-in-the-Red-Algae-online/H7D4QYQ8wrI/" typeof="Book http://bibfra.me/vocab/lite/Item"><span property="name http://bibfra.me/vocab/lite/label"><a href="http://link.randwick.nsw.gov.au/portal/Reproduction-in-the-Red-Algae-online/H7D4QYQ8wrI/">Reproduction in the Red Algae, (online streaming)</a></span> - <span property="potentialAction" typeOf="OrganizeAction"><span property="agent" typeof="LibrarySystem http://library.link/vocab/LibrarySystem" resource="http://link.randwick.nsw.gov.au/"><span property="name http://bibfra.me/vocab/lite/label"><a property="url" href="http://link.randwick.nsw.gov.au/">Randwick City Library</a></span></span></span></span></div>