Sharks and other chondrichthyans are often described as long lived, slow growing and
producing few offspring. These biological characteristics, together with the common …

Bycatch in fisheries can have profound effects on the abundance of species with relatively
low resilience to increased mortality, can alter the evolutionary characteristics and …

A general statistical methodology for analysis of selectivity data from any type of fishing gear
is presented. This formal statistical modelling of selectivity is built on explicit definitions of the …

A demographic technique is used to compare the intrinsic rates of population increase of 26
shark species hypothetically exposed to fishing mortality. These rates (r2M) are used as a …

The log-linear modelling capabilities of existing statistical software permit a generalization of
Holt's indirect estimation method by allowing several different selection curve models to be …

Synopsis (short abstract) This manual defines methods for estimating selectivity of gillnet
and longline gears, with particular reference to the use of these gears in abundance …

Shark nets have been set off the beaches of KwaZulu–Natal, South Africa, since 1952 to
reduce the risk of shark attack. The nets fish in fixed localities 400 m from shore and both …

The methods used to develop catch rate based indices of relative abundance for the school
shark Galeorhinus galeus resource off southern Australia are outlined. These methods are …

Most sharks, rays and chimaeras (chondrichthyans) taken in commercial fisheries are
discarded (ie returned to the ocean either dead or alive). Quantifying the post-capture …

A full-scale fishing experiment on north-east Arctic cod (Gadus morhua) and haddock
(Melanogrammus aeglefinus), involving a trawler, a longliner and a gillnetter was conducted …