publication . Article . 1980

La formacion de anillos de crecimiento en Fissurella crassa en el norte de Chile

Bretos,Marta;
Open Access
  • Published: 01 Dec 1980 Journal: Brazilian Journal of Oceanography, volume 29, pages 69-71 (issn: 1679-8759, Copyright policy)
  • Publisher: FapUNIFESP (SciELO)
Abstract
<abstract language="eng">Growth discontinuity in molluscs result in the formation of rings on their shells. Two kind of rings may be formed: disturbance and growth rings. Growth rings can be used to determine the age of molluscs with long life span. For this, it is necessary to know how many growth rings are formed per year. It has been demonstrated experimentally, using marked specimens, that F. crassa forms two growth rings per year at Huayquique, Northern Chile. They are formed during winter and summer. Disturbance ring formation has also been observed as a result of sawing marks on their shells. A growth curve for this species is proposed on the basis of Wal...
Subjects
free text keywords: Oceanography, Fissurella crassa, biology.organism_classification, biology, Ecology, Life span, Growth curve, Crassa, GC1-1581
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publication . Article . 1980

La formacion de anillos de crecimiento en Fissurella crassa en el norte de Chile

Bretos,Marta;