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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation
Other Titles: Distribución geográfica y descripción de cuatro especies de cirripedios pelágicos a lo largo de la costa chilena del Pacífico sur este - una aproximación zoogeográfica
Author(s): Hinojosa, Ivan A
Boltana, Sebastian
Lancellotti, Domingo
Macaya, Erasmo C
Ugalde, Pabla
Valdivia, Nelson
Vasquez, Nelson
Newman, William A
Thiel, Martin
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Keywords: zoogeography
Issue Date: Mar-2006
Citation: Hinojosa IA, Boltana S, Lancellotti D, Macaya EC, Ugalde P, Valdivia N, Vasquez N, Newman WA & Thiel M (2006) Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation, Revista Chilena de Historia Natural, 79 (1), pp. 13-27.
Abstract: The majority of zoogeographic studies along the Chilean Pacific coast have focused on benthic organisms and oceanographic conditions are considered the main factors influencing their distributions. Herein we examined the geographic distribution of pelagic barnacles of the family Lepadidae collected from floating macroalgae at seven sampling areas between 23 and 50° S. Four species were encountered and they are briefly described herein. The most abundant northern species was Lepas anatifera, and it diminished in abundance towards the south (33° S). Moreover, this species was not found in waters with a sea surface temperature (SST) of less than ~18 ºC. Lepas australis, primarily a circumpolar West Wind Drift species, diminished in abundance towards the north (33° S). This species was restricted to waters of < 18 ºC SST. A third species, L. pectinata, was encountered throughout almost the entire study area, but it was most abundant between 29 and 33° S. The fourth species, Dosima fascicularis, was only found at two sampling areas, namely at 27° S and 33° S, and this is the first record of this species from the central coast of Chile. The distributional pattern of the pelagic barnacles found herein corresponds to the three main zoogeographic regions as revealed by the majority of previous studies based on littoral organisms: the northern Peru-Chilean Province, the southern Magellanic Province, and the central Chilean Transition Zone where the two provinces overlap. Even though the present study only considers four species of pelagic barnacles, the results support the hypotheses on the importance of oceanographic conditions (in particular SST) in determining the zoogeographic patterns along the south east Pacific coast of Chile.
Rights: Publisher is open-access. Open access publishing allows free access to and distribution of published articles where the author retains copyright of their work by employing a Creative Commons attribution licence. Proper attribution of authorship and correct citation details should be given.

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