a study was conducted to determine some biological characteristics of a mudskipper (boleophthalmus dussumieri) such as length, weight frequencies, condition factor and growth parameters of von bertallanfy in the provinces neighboring to the persian gulf, i.e. bushehr and hormozgan, from january 2007 to april 2008.the sampling were carried out using a hand net as well as bare hands. 333 specimen...

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...

Annual von Bertalanffy growth parameters of the Caribbean spiny lobster (Panulirus argus) in Cuban waters were estimated from a long term study (40 years) by length-based methods ELEFAN and the new version of SLCA. Data of around 800 000 lobsters (with carapace length ranging 14 to 199mm) were randomly sampled in artificial shelters (a non selective fishing gear very common in the lobster fishe...

The von Bertalanffy rule (1960) predicts that low incubation temperature during larval development will result in larger adult body size. If larval development in social insects followed this rule, then low incubation temperature would induce the development of larger workers and possibly even sexuals. To test this prediction, the effect of incubation temperature on larval development, larval m...

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‐...

Ages of jolthead porgy (Calamus bajonado Schneider 1801) (n = 635) from Florida commercial and recreational fisheries from 2008-2016 were determined using sectioned sagittal otoliths. We determined, using edge-type analysis, that opaque zones were annular, forming March-June (peaking in April). Jolthead porgy ranged from 1-13 years, and the largest fish measured 680 mm TL (total length, mm). Bo...

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...

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...

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...