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Population biology and habitat of the stauromedusa Haliclystus auricula in southern Chile

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Zagal, CJ 2004 , 'Population biology and habitat of the stauromedusa Haliclystus auricula in southern Chile' , Journal- Marine Biological Association of the United Kingdom, vol. 84, no. 2 , pp. 331-336 , doi: 10.1017/S0025315404009233h.

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Abstract

The population biology and habitat of Haliclystus auricula was studied from samples taken every two months in southern Chile between November 2001 and November 2002. A total of 3790 medusae were collected and examined. The abundance of H. auricula varied seasonally. Maximum densities occurred in summer (1405/m2) and minimum densities during the winter, when the population gradually disappeared. Gonads were observed in medusae starting from a size of 2·0 mm. Stauromedusae were found most often on the red filamentous alga Ceramium rubrum (69%), followed by Gymnogongrus furcellatus (12%) and Ulva sp. (10%). There were highly significant differences in mean abundance of medusae on these three algae (P<0·05). The remaining 9% of medusae were found on other seaweeds. The smallest medusae (0·08–0·9 mm umbrella height) were found exclusively on C. rubrum. The highest densities were recorded in the midlittoral zone.

Item Type: Article
Authors/Creators:Zagal, CJ
Journal or Publication Title: Journal- Marine Biological Association of the United Kingdom
ISSN: 0025-3154
DOI / ID Number: 10.1017/S0025315404009233h
Additional Information:

© 2004 Marine Biological Association of the United Kingdom

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