Seasonal Occurrence and Aggregation Behavior of the Sea Urchin Astropyga pulvinata (Echinodermata: Echinoidea) in Bahía Culebra, Costa Rica
作者： Juan José Alvarado
DOI: 10.2984/1534-6188(2008)62[579:SOAABO]2.0.CO;2
关键词: Astropyga pulvinata 、 Biology 、 Sea urchin 、 Fish species 、 Fishery 、 Ornamental plant 、 Ecology 、 Astropyga 、 Abundance (ecology) 、 Upwelling 、 Nutrient
摘要: Between October 2003 and July 2005, aggregation behavior of the sea urchin Astropyga pulvinta Lamarck was studied in Bahia Culebra, Costa Rica. This forms aggregations during part year then disappears. I quantified number individuals present a defined area each month, their between day night, size. Also, temperature nutrient concentrations water were sampled. There significantly more colder, upwelling season (December to April). Aggregations consisted adult that exploit food season. Moreover, these used as refuge by several fish species high commercial value for aquarium trade. These populations could suffer extraction ornamental fishes urchins increases. Their abundance should continue be monitored an indication ecological health community.
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