First record of Cymatium keenae Beu, 1970 (Mollusca: Ranellidae) from Antofagasta Bay, northern Chile, in connection with El Niño events

Tom Ashton, Jose M. Riascos, Aldo Santiago Pacheco Velasquez

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Cymatium (Monoplex) keenae Beu, 1970, the neopolitan triton, is a Ranellidae predator distributed in tropical and subtropical waters. In this study we report this species for the first time in Antofagasta Bay, northern Chile. Adult specimens have been found since June 2003 at depths ranging from 5 to 15 m in La Rinconada Marine Reserve (23°28′18″S, 70°30′46″W) in Antofagasta Bay, near a scallop farming facility. The present findings clearly extend the geographic range of C. keenae, which previously had been reported from La Paz, Gulf of California (Mexico) to Galápagos Islands (Ecuador) in the SE Pacific. Previous evidence strongly suggests that the intrusion of this tropical immigrant can be related to warm El Niño episodes. We analyze the key role of the oceanographic characteristics of Antofagasta Bay as potential temporal refuge for this species.

Original languageEnglish
Pages (from-to)107-110
Number of pages4
JournalHelgoland Marine Research
Volume62
Issue number1
DOIs
StatePublished - Mar 2008
Externally publishedYes

Keywords

  • Antofagasta Bay
  • ENSO
  • Geographic distribution
  • Ranellidae
  • Range extension

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