Document
type: Class

Relation of dental wear to the concentrations of essential minerals in teeth of the California sea lion Zalophus californianus californianus
chemicalscas: calcium, 7440-70-2, 14092-94-5; iron, 14093-02-8, 53858-86-9, 7439-89-6; magnesium, 7439-95-4; phosphorus, 7723-14-0; potassium, 7440-09-7; sodium, 7440-23-5; zinc, 7440-66-6, 14378-32-6
abstract: Tooth wear in marine mammals has been attributed to age, feeding habits, behavior, and contaminants. Advanced tooth wear in some California sea lions, including some of very young age (<5 yr), in the Gulf of California, suggests that there are variations in chemical composition of tooth parts, wherein the concentrations of certain trace minerals might be anomalous, making them more susceptible to erosion. The concentrations of the essential minerals Ca, P, K, Na, Fe, Mg, and Zn in the dentition of Zalophus c. californianus are documented for the first time and are compared for sea lion teeth with different degrees of wear. Canine teeth and molars from 45 skulls collected at 15 localities since 1978 were digested in perchloric acid and analyzed using atomic adsorption spectrometry, the results being expressed in milligrams per 100 g. An index of tooth wear (Id) was established, involving the average wear on the teeth and the age of the organism. No significant difference was detected in the variables, but there was one between ages (p ≤ 0.02). A higher degree of wear was observed up to 7 yr of age than from this age onward. Mineral concentrations did not explain the excessive wear observed (correlation, p > 0.09; ANOVA, p > 0.15); however, the Ca concentration of the teeth was inversely proportional to the age of the animal (sexes combined, p ≤ 0.026) and particularly significant for the females (r2 ≤ 0.112, r ≤ -0.335, p ≤ 0.039). Females could be more prone to decalcification because of their annual bone investment in their offspring. Animals of both sexes were susceptible to tooth wear as their age increased, but the higher frequency of animals between 4 and 7 yr suggests an impact on survival at early stages probably linked to deficient feeding and chronic malnutrition. © Copyright 2007 by Humana Press Inc. All rights of any nature, whatsoever, reserved.
pmid: 17435255
most specific type: Article
type: Document
date time value: article date 1769
type: Continuant
related by: authorship_10570
related by: authorship_10568
origen: scopus
issue: 2
related by: authorship_10569
crisid: 1769
type: Entity
type: Article
type: Thing
estado: published
freetext keyword: California sea lion; Dental wear; Essential minerals; Teeth; Zalophus californianus calcium; iron; magnesium; mineral; phosphorus; potassium; sodium; trace element; zinc; animal tissue; article; atomic absorption spectrometry; bone demineralization; canine tooth; controlled study; correlation analysis; malnutrition; molar tooth; nonhuman; nutritional deficiency; seal; tooth disease; Animalia; Mammalia; Otariidae; Zalophus; Zalophus californianus; Zalophus californianus californianus
page end: 126
type: Information Content Entity
page start: 107
has publication venue: Biological Trace Element Research
type: Generically Dependent Continuant
volume: 115
e iscopus: 2-s2.0-34247381106
doi: 10.1007/BF02686023
most specific type: Document

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date: 2026-08-28T03:07:50
publisher: vivo
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label: RDF description of Relation of dental wear to the concentrations of essential minerals in teeth of the California sea lion Zalophus californianus californianus - http://orbis.uaslp.mx/vivo/individual/scopus1768

Article
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Biological Trace Element Research
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publication venue for: Relation of dental wear to the concentrations of essential minerals in teeth of the California sea lion Zalophus californianus californianus
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