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- Title
Brooding in Psolus patagonicus (Echinodermata: Holothuroidea) from Argentina, SW Atlantic Ocean.
- Authors
Giménez, Juliana; Penchaszadeh, Pablo E.
- Abstract
The mode, season, and time of brooding, egg diameter, egg number per brood, and the characteristics of newly released juveniles of Psolus patagonicus were investigated off Mar del Plata, Buenos Aires, Argentina, between October 1999 and February 2001. Individuals were attached to the Patagonian scallop, Zygochlamys patagonica. Spawning occurs between February and March. The mean egg diameter, 887 ± 26 µm, is the highest reported for the family Psolidae. Eggs are brooded under the mother's sole until they develop into crawling juveniles within 7 months. The largest embryos reached a length of 1,941 ± 228 µm in September. During the brooding period (February-September) the number of brooded embryos decreased while their size increased. Our study confirms brooding behaviour in female P. patagonicus.
- Subjects
BUENOS Aires (Argentina); ARGENTINA; ATLANTIC Ocean; PSOLUS; EGG incubation; ECHINODERMATA
- Publication
Helgoland Marine Research, 2010, Vol 64, Issue 1, p21
- ISSN
1438-387X
- Publication type
Article
- DOI
10.1007/s10152-009-0161-z