Age, growth rate and season of recruitment of Pinna nobilis (L) in the Croatian Adriatic determined from Mg:Ca and Sr:Ca shell profiles

Richardson, C. A.; Peharda, Melita; Kennedy, Hilary; Kennedy, Paul; Onofri, Vladimir

doi:10.1016/j.jembe.2003.08.012

Cited by 126 publications

(108 citation statements)

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“…Mollusc shells and corals tend to have even higher Mg:Ca, often above 1 mmol mol' (Carr6 et al, 2006;Shirai et al, 2008) with the calcitic portion of a deep-sea oyster shell reaching values of 22.5 mmol mol "1 (Wisshak et al, 2009); although Rio et al (1992) (Dorval et al, 2007), shells from Chione subrugosa had values as high as 3600 iimol mol "1 (Carr6 et al, 2006) and Acropora nobilis coral skeletons were even higher, ranging up to 9500 pmol mol~' (Shirai et al, 2008), yet the zoarcid values are still substantially higher. Sr:Ca incorporation can be influenced not only by the Sr:Ca concentration of the organisms environment, but also by environmental temperature (Bath et al, 2000;Elsdon and Gillanders, 2002;Richardson et al, 2004) and, at least for molluscs, growth rate (Stecher et al, 1996;Carr6 et al, 2006). Contrary to the results in the present study, Rio et al (1992) Nd and Gd data within this study make it difficult to assess whether they display the Eu anomaly that is indicative of rare earth element concentrations in hydrothermal fluids (Klinkhammer et al, 1994).…”

Section: -Th25contrasting

confidence: 82%

Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise

Buckman¹

2009

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A study of the ecology of fish endemic to hydrothermal vents on the East Pacific Rise was undertaken utilizing a variety of techniques, focusing on the bythitid Thermichthys hollisi. Stable isotope and gut content analyses were used to elucidate prey choice and trophic relationships. Otolith chemical signatures were investigated to determine whether this technique could be utilized to examine life history strategy and habitat use. Chemical characteristics of preferred fish habitat and gene expression responses habitat chemistry were explored. Gut contents indicated that T. hollisi specimens were actively feeding upon a combination of brachyuran crabs, Alvinocaris shrimp, polychaetes, and zoarcid fish with the majority of fish containing evidence of crustacean prey. Carbon, nitrogen, and sulfur stable isotopic measurements support a chemosynthetically based prey source and place T. hollisi in the uppermost trophic levels of vent communities. The influence of exposure to hydrothermal fluids was apparent in otoliths from both species of vent fish, most noticeably within the relatively elevated Sr:Ca and depleted Mg:Ca ratios. Otolith chemistry suggested that the zoarcid Thermarces cerberus experiences greater direct exposure to diffuse fluids than does T. hollisi, which is concurrent with apparent habitat preferences. Isotopic patterns across the span of the otolith suggested that T. cerberus spends its entire life within the vent system. In contrast, it appeared that T. hollisi exists outside of the influence of hydrothermal activity for some early portion of its life-cycle. Time-lapse photography and in situ electrochemistry indicated that T. hollisi are preferentially utilizing fish holes where there are elevated temperatures and sulfide levels, and variable oxygen levels in comparison to ambient bottom water. A fragment of Cu, Zn superoxide dismutase was successfully amplified from T. hollisi mRNA, but there were no differences in expression levels between tissue types or among individuals within the small sample examined. In general, it appears that T. hollisi is both influenced by and may exert a greater influence on hydrothermal vent communities to a greater degree than initially hypothesized.Thesis Supervisor: Timothy M. Shank Title: Associate Scientist, Biology Department, Wood Hole Oceanographic Institution Ackiowledgements This thesis could not have been accomplished without the support of a variety of people who have been there for me both personally and professionally throughout the past six years. My advisor, Tim, has provided me with innumerable opportunities to expand my horizons, and has always allowed me the freedom to pursue my own interests, even if the road I wanted to go down was not what many would have viewed as the logical choice. When he realized that yes, I really only wanted to work on fish, he helped make that dream a reality. He and the rest of my committee: Simon, Mark, Leona, and George, have always been helpful, supportive, and willing to answer any questions that I might ha...

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Section: -Th25contrasting

confidence: 82%

Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise

Buckman¹

2009

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“…The investigation of large underwater areas is often complicated by the large depth distribution of P. nobilis populations; individuals need to be carefully located by scuba diving and survey performance becomes constricted by working time, which involves great sampling efforts (Richardson et al 2004). Possibly for this reason, most studies indicating high P. nobilis densities have only been carried out in areas smaller than 10000 m -2 and the total population reported is usually much lower than 1000 individuals (e.g.…”

Section: Introductionmentioning

confidence: 99%

Habitat use by a large population of <em>Pinna nobilis</em> in shallow waters

Prado¹,

Caiola²,

Ibáñez³

2014

Sci. Mar.

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Summary:We investigated the habitat use and size structure of the fan mussel, Pinna nobilis L. in the Alfacs Bay (Ebro Delta, Spain, NW Mediterranean). Shore-parallel transects were conducted to assess the abundance, size, and orientation of individuals and to record habitat features along the Banya Sandspit, at depths of 20 to 130 cm. Results showed two distinctive areas in terms of population density, marked by the end of local salt pan dikes that we named Good Habitat (GH) and Bad Habitat (BH). To extrapolate these results to the full area of BH and GH, perpendicular transects were conducted to determine the local bathymetry. Then, the underestimation of individuals due to the effects of distance, depth and seagrass cover (Distance 6 computer package) was added to raw abundances to obtain a corrected population of 90303 individuals (12085 in the BH and 782018 in the GH), the largest so far reported at such low depths. Most recorded individuals were adults (40 to 60 cm shell length), with no occurrence of sizes <20 cm, and with a strong association with Cymodocea nodosa seagrass beds. Given the shallow distribution of the population, the absence of small sizes during the study period, and the presence of human activities that may damage P. nobilis and its habitat, the development of a management plan appears imperative for the conservation of the species.Keywords: fan mussel; endangered species; Cymodocea nodosa; habitat use; water depth; human activities. Uso del hábitat por una gran población superficial de Pinna nobilisResumen: El uso del hábitat y la estructura poblacional de la nacra, Pinna nobilis L. fue investigado en la bahía dels Alfacs (Delta del Ebro, Spain, Mediterráneo noroccidental). La abundancia, talla, y orientación de los individuos, así como las características del hábitat se evaluaron mediante transectos paralelos a la costa, a profundidades comprendidas entre los 20 y los 130 cm. Los resultados evidenciaron la presencia de dos áreas con densidades poblacionales diferenciadas, delimitadas por el final de los diques de las salinas locales, a las que se denominó Good Habitat (GH) y Bad Habitat (BH). Para extrapolar los resultados a toda el área del BH y el GH, se realizaron transectos perpendiculares para determinar la batimetría local. A continuación, las tasas de infravaloración de individuos debido al efecto de la distancia, la profundidad, y la cobertura de fanerógamas marinas obtenidas con el paquete informático Distance 6 se añadieron a los valores no corregidos, y resultaron en una estima de 90.303 individuos (12.085 en el BH y 78.2018 en el GH, la mayor hasta ahora registrada en aguas poco profundas. La mayoría de los individuos observados eran adultos (40 a 60 cm de longitud de valvas), sin ocurrencia de tallas <20 cm, y con una fuerte asociación a la pradera de Cymodocea nodosa. Dada su distribución poco profunda, la ausencia de individuos juveniles durante el periodo de estudio, y la presencia de actividades humanas en la zona que potencialmente pueden perjudicar a P. nobilis y a s...

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“…The pinnids age seems to be fluctuating due to environmental and biological conditions and may depend on the method used, observed and calculated/estimated. In all cases, the individuals with a length of 67-68 cm were mentioned as 10-27 years old (Morteau & Vicente 1982;Richardson et al 2004;Katsanevakis 2005;Galinou-Mitsoudi et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Genetic structure of the endangered species Pinna nobilis (Mollusca: Bivalvia) inferred from mtDNA sequences

et al. 2008

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This study examines the population genetic structure of the endangered bivalve Pinna nobilis (Mollusca: Bivalvia), based on novel mtDNA sequences (partial COI and 16S rDNA mtDNA genes). The analyzed nucleotide sequences of COI were 729 bp in size, coding for a 243 amino acid peptide, while the analyzed nucleotide sequences of 16S rDNA were 489 bp in size. These sequences of P. nobilis were the first DNA sequences of the species submitted to any Genetic Data Base. Population samples from four geographic regions from Greece, as well as a population sample of Atrina fragilis (as an outgroup) were used. High values of haplotypic diversity were found in the population samples of P. nobilis, based on the COI sequences. A single base in the analyzed 16S rDNA sequences was different in all analyzed individuals from a single population sample (Chios island) differentiating it from the other ones. These mtDNA sequences could be informative for further genetic analyses of the endangered species, contributing in conservation plans for its protection and/or aquaculture investigations.

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Age, growth rate and season of recruitment of Pinna nobilis (L) in the Croatian Adriatic determined from Mg:Ca and Sr:Ca shell profiles

Cited by 126 publications

References 19 publications

Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise

Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise

Habitat use by a large population of <em>Pinna nobilis</em> in shallow waters

Genetic structure of the endangered species Pinna nobilis (Mollusca: Bivalvia) inferred from mtDNA sequences

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