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Fissiparity in Holothuria leucospilota from tropical Darwin waters, NT

Purwati, P (2004). Fissiparity in Holothuria leucospilota from tropical Darwin waters, NT. SPC Beche-de-mer Information Bulletin,20(August, 2004):26-32.

Document type: Journal Article
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Title Fissiparity in Holothuria leucospilota from tropical Darwin waters, NT
Author Purwati, P
Journal Name SPC Beche-de-mer Information Bulletin
Publication Date 2004
Volume Number 20
Issue Number August, 2004
Start Page 26
End Page 32
Total Pages 7
Place of Publication La Reunion, France
Publisher PIMRIS
HERDC Category C2 - Journal Article - Other contributions to refereed journal (internal)
Abstract Fission was studied in a population of Holothuria leucospilota at Darwin harbour. Fission resulted in smaller size anterior portions (A to P ca. 34.81%). A greater number of posterior individuals (P and Pa) may be assumed to mean a greater survival capacity than with anterior individuals (A and Ap). Monthly observations from September 1998 to September 1999 revealed that fission occurred throughout the year at an estimated rate of up to 28% at East Point and 8% at Nightcliff. At East Point, maximum fission occurred in April and coincided with a period of sexual reproduction, when annual precipitation was at a maximum and the reefs were exposed for less than 4 hrs day-1. This study suggests that H. leucospilota may use fission to maintain population level when sexual recruitment fails.
 
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Created: Fri, 12 Sep 2008, 08:35:25 CST by Administrator