Results 91 to 100 of about 3,056,753 (292)
Journal of Fish Biology, EarlyView.Abstract The plainfin midshipman (Porichthys notatus Girard, 1854) is a toadfish with two distinct reproductive male tactics: ‘guarder males’ and ‘sneaker males’. These two tactics are anatomically, physiologically and behaviourally distinct from one another at sexual maturity, but it remained unclear whether these two male types remain fixed or ...
Micah J. Quindazzi +4 more
wiley +1 more source
VON BERTALANFFY GROWTH CURVE OF THE RUDD (Scardinius erythrophthalmus L.) FROM THE LAKE KLJUČIĆ BRDO, CENTRAL CROATIA [PDF]
Croatian Journal of Fisheries, 2011 The rudd is a cyprinid herbivorous freshwater fish. The samples of rudd have been taken from the „Ključić brdo“ location. The arithmetic mean of length for each age group was determined according to Peterson, Danish ichthyologist.
Marina Piria +2 more
doaj
Mathematical Modelling of Population Growth: The Case of Logistic and Von Bertalanffy Models
, 2014 In this paper, some theoretical mathematical aspects of the known predator-prey problem are considered by relaxing the assumptions that interaction of a predation leads to little or no effect on growth of the prey population and the prey growth rate ...
M. Dawed, P. Koya, A. Goshu
semanticscholar +1 more source
Journal of Fish Biology, EarlyView.Abstract Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake are the focus of intensive conservation efforts due to the threat of predation by invasive lake trout Salvelinus namaycush. Suppression gillnetting has reduced the abundance of predatory lake trout, and the Yellowstone cutthroat trout population is recovering ...
Michelle A. Briggs +3 more
wiley +1 more source
Revista de Biología Tropical, 2013 Common snook Centropomus unidecimalis is an important commercial and fishery species in Southern Mexico, however the high exploitation rates have resulted in a strong reduction of its abundances.
Martha A. Perera-Garcia +5 more
doaj +2 more sources
STANDARD GROWTH CURVE FOR CHUB (Leuciscus cephalus L. 1758) IN CROATIA [PDF]
Croatian Journal of Fisheries, 1997 Chub (Leuciscus cephalus) is widely spread fish species and it inhabits most of Europe and some parts of Asia. It is also the dweller of different sections of rivers and stagnant waters and it eats both - animal and plant organisms.
Tomislav Treer +4 more
doaj
Estimating von Bertalanffy parameters with individual and environmental variations in growth
Journal of Biological Dynamics, 2012 Variation among individuals is an ubiquitous feature of natural populations. However, the relative roles of intrinsic individual differences and stochastic processes in generating variation remain poorly understood.
A. O. Shelton, M. Mangel
semanticscholar +1 more source
On boundaries and disciplines: constructing a set of key systems thinkers [PDF]
, 2006 Over the past four years, the Open University has been working on an internal project of systems scholarship, called 'Systems Thinkers'. We have examined the life and work of fifty key thinkers, held discussions on their significance, and are in the ...
Ramage, Magnus, Shipp, Karen
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Journal of Fish Biology, EarlyView.Abstract The European pilchard, Sardina pilchardus, is a key small pelagic fish sustaining Mediterranean ecosystems and fisheries. This study represents the first comprehensive biological and population dynamics assessment of the European pilchard by applying the length‐based spawning potential ratio (LB‐SPR) approach to S.
Mohab Badreldin +3 more
wiley +1 more source
Biology and assessment of the painted sweetlips (Diagramma pictum (Thunberg, 1792)) and the spangled emperor (Lethrinus nebulosus (Forsskål, 1775)) in the southern Arabian Gulf [PDF]
, 2006 The population biology and status of the painted sweeplips (Diagramma pictum) and spangled emperor (Lethrinus nebulosus) in the southern Arabian Gulf were established by using a combination of size-frequency, biological, and size-at-age data.
Al Abdessalaam, Thabit Z. +3 more
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