TitleSynergistic predation, density dependence, and population regulation in marine fish
Publication TypeJournal Article
Year of Publication1997
AuthorsHixon, MA, Carr, MH
JournalScience
Volume277
Pagination946-949
Type of ArticleJournal Article
ISSN0036-8075
Abstract

Understanding natural causes of density dependence is essential for identifying possible sources of population regulation. Field experiments on a model system of coral reef fishes showed that small juveniles of Chromis cyanea suffer heavy mortality that is spatially density-dependent only in the presence of two suites of predators: transient piscivores attacking from above, and reef-resident piscivores attacking from below. In the absence of either kind of predator, early mortality of Chromis is virtually density-independent. Because piscivores may have regulatory roles in this and similar marine systems, overfishing these predators may have ramifications for the remainder of the exploited community.

URL<Go to ISI>://WOS:A1997XQ98500039
DOI10.1126/science.277.5328.946