Scotian Shelf and Cape Hake (Merluccius capensis) from Namibia Area
A comparison was made of some biological characteristics and abundance dynamics of silver hake (Merluccius bilinearis) from Scotian Shelf (Northwest Atlantic) and cape hake (Merluccius capensis) from Southeast Atlantic area (between 18°–28°S). Differences in size composition, growth rate and length-...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.628.927 http://archive.nafo.int/open/studies/s30/Rikhter.pdf |
| Summary: | A comparison was made of some biological characteristics and abundance dynamics of silver hake (Merluccius bilinearis) from Scotian Shelf (Northwest Atlantic) and cape hake (Merluccius capensis) from Southeast Atlantic area (between 18°–28°S). Differences in size composition, growth rate and length-at-maturity were most significant in late-1960s – first half of 1970s. During the subsequent period these parameters became more similar. Taking into consideration the approximately similar rates of natural mortality, these species may be described as belonging to similar abundance dynamics with high reproduction ability and strong fluctuation of abundance. During the period 1968–90 similarity of recruitment trends and total biomass of southern and northern species was found, along with evidence of a synchronous pattern of general trends under the impact of global climatic variations. |
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