Exploited marine living resources are at present assessed in the Mediterranean by refer‐ ring to 26 geographical sub‐areas (GSA: GFCM, 2009), mainly delimited on the basis of politi‐ In this paper, some life‐history estimates concerning the females of the Mediterranean hake Merluccius merluccius (L., 1758), i.e. the parameters of the von Bertalanffy growth function (L∞, K, and t0), the maximum‐...

Inferring growth for aquatic species is dependent upon accurate descriptions of age-length relationships, which may be degraded by measurement error in observed ages. Ageing error arises from biased and/or imprecise age determinations as a consequence of misinterpretation by readers or inability of ageing structures to accurately reflect true age. A Bayesian errors-in-variables (EIV) approach (...

Sepia pharaonis is an important commercial species endemic to the tropical Indo-Pacific region. Despite its commercial significance, only few information on natural populations is available. This study was aimed to describe the aspects of size-composition, length-weight relationship, catch rates, seasonal recruitment and inter-cohort growth patterns of S. pharaonis population (Clade C), distrib...

This work aims to compare different nonlinear functions for describing the growth curves of Nelore females. The growth curve parameters, their (co)variance components, and environmental and genetic effects were estimated jointly through a Bayesian hierarchical model. In the first stage of the hierarchy, 4 nonlinear functions were compared: Brody, Von Bertalanffy, Gompertz, and logistic. The ana...

The queen conch, Strombus gigas, is a gastropod of commercial importance in the Caribbean. Population studies are based on size frequency analysis, using either length or weight parameters for the whole live organism. This contribution used mark-recapture data to estimate the Von Bertalanffy equation parameters and population number variation within a non harvest population from a protected are...

Non-linear models were analysed to describe both the biological and commercial growth curves of the Segureña sheep, one of the most important Spanish breeds. We evaluated Brody, von Bertalanffy, Verhulst, logistic and Gompertz models, using historical data from the National Association of Segureña Sheep Breeders (ANCOS). These records were collected between 2000 and 2013, from a total of 129 61...

Ministry of Agriculture and Fisheries. Fisheries Research Centre P.O. Box 297. Wellington, New Zealand Present address: Department of Zoology. University of Canterbury Christchurch J. New Zealand Population Structure, Ageing, and Fishing Mortality of the New Zealand Abalone Haliotis iris Abstract. Populations of the New Zealand (NZ) black-footed abalone Haliotis iris were examined in two import...

Systems thinking is used in a variety of scientific and technological fields. Indeed, this paradigm has proved indispensable in disciplines as disparate as commerce, production, and the aviation industry. Aleksander Bogdanov (1873–1928) was probably the first exponent of systems thinking. In his ‘‘Tektology: Universal Organization Science’’ (1913–1922), Bogdanov ambitiously proposed that all ph...