This volume offers a collection of papers on the quantitative assessment of age and growth in Chondrichthyan fishes. It details new hard parts for assessments of age, such as caudal thorns; new techniques like bomb radiocarbon for validation; and reexaminations of previous age and growth models. It also examines the importance of assessing the precision and accuracy of statistical formulas, analyses, and models used in age and growth studies.

InhaltsangabeAcknowledgment of referees.- Age and growth studies of chondrichthyan fishes: the need for consistency in terminology, verification, validation, and growth function fitting.- Age and growth of the sandbar shark, Carcharhinus plumbeus, in Hawaiian waters through vertebral analysis.- A re-examination of the age and growth of sand tiger sharks, Carcharias taurus, in the western North Atlantic: the importance of ageing protocols and use of multiple back-calculation techniques.- Comparing external and internal dorsal-spine bands to interpret the age and growth of the giant lantern shark, Etmopterus baxteri (Squaliformes: Etmopteridae).- The potential use of caudal thorns as a non-invasive ageing structure in the thorny skate (Amblyraja radiata Donovan, 1808).- Terminology for the ageing of chondrichthyan fish using dorsal-fin spines.- Do differences in life history exist for blacktip sharks, Carcharhinus limbatus, from the United States South Atlantic Bight and Eastern Gulf of Mexico?.- Evidence of two-phase growth in elasmobranchs.- Two Bayesian methods for estimating parameters of the von Bertalanffy growth equation.- A critical appraisal of marginal increment analysis for assessing temporal periodicity in band formation among tropical sharks.- Elemental signatures in the vertebral cartilage of the round stingray, Urobatis halleri, from Seal Beach, California.- Bomb dating and age validation using the spines of spiny dogfish (Squalus acanthias).- Investigations of ?14C, ? 13C, and ? 15N in vertebrae of white shark (Carcharodon carcharias) from the eastern North Pacific Ocean.- Application of bomb radiocarbon chronologies to shortfin mako (Isurus oxyrinchus) age validation.- Validated age and growth estimates for the shortfin mako, Isurus oxyrinchus, in the North Atlantic Ocean.- Validated age and growth of the sandbar shark, Carcharhinus plumbeus (Nardo 1827) in the waters off Western Australia.- Analysis of variability in vertebral morphology and growth ring counts in two Carcharhinid sharks.- Morphometric minefields-towards a measurement standard for chondrichthyan fishes.