Corpus ID: 37881498

Preliminary studies on the age and growth of blue (Prionace glauca), common thresher (Alopias vulpinus), and shortfin mako (Isurus oxyrinchus) sharks from California waters

@inproceedings{Cailliet1983PreliminarySO,
  title={Preliminary studies on the age and growth of blue (Prionace glauca), common thresher (Alopias vulpinus), and shortfin mako (Isurus oxyrinchus) sharks from California waters},
  author={G. Cailliet and Linda K. Martin and J. Harvey and D. Kusher and Bruce A. Welden},
  year={1983}
}
Two methods of enhancing growth bands on vertebral centra-silver nitrate impregnation and X -radiography -have proven to be successful when used on centra from 130 blue, Prionace glauca, 143 common thresher ,Alopias vulpinus, and 44 shortfin maim, Isurus oxyrinchus, sharks. Bands were counted and measured, and these data were used to construct growth curves based on the von Bertalanffy and logistic growth models. The problems of verification of these counts, and validation of the periodicity of… Expand

Figures from this paper

Age and growth of the blue shark, Prionace glauca Linnaeus, 1758, in the Northwest coast off Mexico Edad y crecimiento del tiburón azul, Prionace glauca Linnaeus, 1758, en la costa noroeste de México
The blue shark is one of the main species caught in the artisanal fisheries in the northwest coast of Mexico. The age and growth was estimated by counting the growth bands on vertebral centra stainedExpand
PRELIMINARY INVESTIGATIONS INTO THE AGE AND GROWTH OF THE SHORTFIN MAKO, ISURUS OXYRINCHUS, WHITE SHARK, CARCHARODON CARCHARIAS, AND THRESHER SHARK, ALOPIAS VULPINUS, IN THE WESTERN NORTH ATLANTIC OCEAN
TLDR
Preliminary analysis of the vertebrae of these three species indicate that the current processing method is adequate for counting bands and the vertebral centra are appropriate structures to use for aging these species. Expand
Age and growth of the blue shark Prionace glauca (Linnaeus, 1758) off northeastern Brazil
TLDR
It is demonstrated that growth curves did not differ significantly, even considering significant vertebral radius (VR)–TL regressions for males and females, and higher growth rates were found in the southern Hemisphere, leading to significant differences in VBGF when compared to other areas. Expand
Age and growth of the blue shark (Prionace glauca) in the Indian Ocean
TLDR
Results suggest that females have a slower growth than males, and further work is needed regarding P. glauca in the Indian Ocean, but this study adds important life-history information that can contribute for the management and conservation of the species. Expand
Age and growth estimates of the blue shark Prionace glauca in the central South Pacific Ocean
The age and growth of the blue shark Prionace glauca in the central South Pacific is described based on 267 specimens that were collected by scientific observers on board Taiwanese large-scale tunaExpand
AGE AND GROWTH OF THE BLUE SHARK, PRIONACE GLAUCA, IN THE NORTH ATLANTIC OCEAN
TLDR
The blue shark grows faster and has a shorter life span than previously reported in these waters and growth rates from tag-recaptures agreed with those derived from vertebral annuli for smaller sharks but appeared overestimated for larger sharks. Expand
Age and growth of the shortfin mako shark Isurus oxyrinchus from the western coast of Baja California Sur, Mexico
TLDR
The results suggest that shortfin makos are relatively slow growing sharks, which combined with other life-history traits such as a low fecundity and delayed reproduction, makes this species highly susceptible to overfishing. Expand
Age, growth and reproductive biology of the blue shark Prionace glauca in South African waters
TLDR
Growth estimates from this study fall within the reported ranges and confidence intervals for other studies on blue sharks, and Phi prime values showed little variation in the growth of the blue shark across its geographic range. Expand
Age and growth of the shortfin mako (Isurus oxyrinchus) in the south-eastern Pacific off Chile
TLDR
The results indicated that this species is highly vulnerable to exploitation and, thus, urgent conservation measures are required. Expand
Validated age and growth of the leopard shark, Triakis semifasciata, with comments on reproduction
TLDR
Seasonal changes in size modes of young-of-the-year leopard sharks, centrum edge characteristics, and growth and tetracycline mark-recapture from the field were used to validate annual deposition of vertebral centrum band pairs. Expand
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