Study of Pinna nobilis growth from inner record: How biased are posterior adductor muscle scars estimates?

Garcia-March, Jose R., Marquez-Aliaga, Ana, Wang, You-Gan, Surge, Donna and Kersting, Diego Kurt (2011) Study of Pinna nobilis growth from inner record: How biased are posterior adductor muscle scars estimates?. Journal of Experimental Marine Biology and Ecology, 407 2: 337-344. doi:10.1016/j.jembe.2011.07.016


Author Garcia-March, Jose R.
Marquez-Aliaga, Ana
Wang, You-Gan
Surge, Donna
Kersting, Diego Kurt
Title Study of Pinna nobilis growth from inner record: How biased are posterior adductor muscle scars estimates?
Formatted title
Study of Pinna nobilis growth from inner record: How biased are posterior adductor muscle scars estimates?
Journal name Journal of Experimental Marine Biology and Ecology   Check publisher's open access policy
ISSN 0022-0981
Publication date 2011-10-01
Sub-type Article (original research)
DOI 10.1016/j.jembe.2011.07.016
Volume 407
Issue 2
Start page 337
End page 344
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
Previous studies have shown that the external growth records of the posterior adductor muscle scar (PAMS) of the bivalve Pinna nobilis are incomplete and do not produce accurate age estimations. We have developed a new methodology to study age and growth using the inner record of the PAMS, which avoids the necessity of costly in situ shell measurements or isotopic studies. Using the inner record we identified the positions of PAMS previously obscured by nacre and estimated the number of missing records in adult specimens with strong abrasion of the calcite layer in the anterior portion of the shell. The study of the PAMS and inner record of two shells that were 6 years old when collected showed that only 2 and 3 PAMS were observed, while 6 inner records could be counted, thus confirming our working methodology. Growth parameters of a P. nobilis population located in Moraira, Spain (western Mediterranean) were estimated with the new methodology and compared to those obtained using PAMS data and in situ measurements. For the comparisons, we applied different models considering the data alternatively as length-at-age (LA) and tag-recapture (TR). Among every method we tested to fit the Von Bertalanffy growth model, we observed that LA data from inner record fitted to the model using non-linear mixed effects and the estimation of missing records using the calcite width was the most appropriate. The equation obtained with thismethod, L=57.3*(1−e−0.16(t−0.02)), is very similar to that calculated previously from in situ measurements for the same population.
Keyword Bivalvia
Endangered species
Mediterranean
Sclerochronology
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2012 Collection
 
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