BB Actions and Sounds

The following are video supplements to papers that have appeared in The Biological Bulletin. To view the video you will need to download the VivoActive Player, a plug-in for your browser software. This plug-in should be placed in the "Plug-Ins" folder of your browser. The browser will need to be re-started. There are up to three versions of the video available. Modem users should click the icon labelled "28.8." Faster connections might want to try the "T1" version. The source QuickTime format is also available and constitutes the best resolution available. This file may be quite large (10+ MB).

Hanlon, Roger T., Michael R. Maxwell, and Nadav Shashar. 1997. Behavioral dynamics that would lead to multiple paternity within egg capsules of the squid Loligo pealei. Biol. Bull. 193: 000-000.

Video sequence of an extra-pair copulation by a large lone male Loligo pealei. At the start of the segment, the female is in the center of the screen, just to the right of the egg bed. Her paired male is just above her. As she begins to place her arms into the bed, a lone, large male darts in from the left, grabs her mantle, and proceeds to copulate in the parallel position. Seven seconds after first grabbing her, he reaches in to his mantle cavity with his hectocotylized arm and transfers a spermatophore to the female's mantle cavity. After 14 s of copulation, the female's paired male starts to wedge himself between her and the copulating male. Nevertheless, the copulation lasts for a total of 28 seconds, which is a typical duration for parallel copulations.