title: Reproductive patterns in the deep-sea benthos.
abstract: The reproductive condition of a variety of benthic invertebrates from the bathyal San Diego Trough was monitored periodically. In this physically seasonless, deep-sea environment most species reproduce throughout the year, and only a few display highly synchronous, annual reproductive cycles. These few are not typical deep-sea species; they are known from shallow water and belong to groups which are relatively unimportant in abyssal depths. Of the 11 species examined, 3 bivalves, 2 ophiuroids, 2 isopods, 1 amphipod, and 1 polychaete breed year-round, and 1 brachiopod and 1 scaphopod spawn seasonally.
mesh_terms: D000818:Animals; D000845:Annelida; D002140:California; D007448:Invertebrates / Q000502:physiology*; D008974:Mollusca; D010507:Periodicity; D012098:Reproduction; D012621:Seasons; D012623:Seawater