The natural mortality rate M is a key parameter in estimating the productivity of a fish stock.
However, it is quite difficult to estimate given its correlation with other parameters, variation …

Numerous studies have now demonstrated that the most common method of ageing sharks
and rays, counting growth zones on calcified structures, can underestimate true age. I …

The study of age and growth is a fundamental component of fisheries science with important
applications in fisheries management, conservation, and branches of ecology. This chapter …

The present study examined body length (precaudal length, PCL) and age at sexual
maturity, as well as fecundity and maternal investment in the Pacific spiny dogfish Squalus …

In addition to being an academic endeavour, the practical purpose of conducting age and
growth studies on fishes is to provide biological data to stock assessment scientists and …

The broadnose sevengill shark (Notorynchus cepedianus) is a large marine predator found
in temperate coastal marine habitats. Despite being commonly encountered, details of its …

Spiny dogfish (Squalus acanthias) are traditionally aged by counting band pairs on dorsal-
fin spines; however, wear and tear of the spines make obtaining accurate age estimates of …

The Pacific spiny dogfish, Squalus suckleyi, is a small shark species commonly found in the
North Pacific Ocean. Age determination for this species has historically been conducted by …

Historically, Pacific spiny dogfish (Squalus suckleyi) have been aged using dorsal fin spines,
a method that was validated through bomb radiocarbon analysis and oxytetracycline …

Globally, shark populations can be susceptible to overexploitation from fishing due to their
conservative life histories (eg, late maturity, slow growth, long gestation periods, and low …