|
|
|
|
|
| Zavatteri, A.; Abachian, V.E.; Giussi, A.R.; Di Leva, I.V.. |
| Estimate of age, growth and natural mortality of longtail hake (Macruronus magellanicus) in the Southwest Atlantic Ocean during summer 2010. Longtail hake (Macurornus magellanicus) total length (TL) and weight (W) growth parameters were estimated and age structure and natural instantaneous mortality coefficient (M) analyzed. Data were obtained within the framework of the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) “Observers on Board of Commercial Vessels” Subprogramme. The information, derived from the area comprised between 46° S-54° S, was collected during the February-April 2010 period. Sagittae otoliths reading of 5,034 individuals (2,429 males and 2,605 females) between 28-99 cm TL was performed. The maximum ages observed in... |
| Tipo: Journal Contribution |
Palavras-chave: Age determination; Growth; Natural mortality. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5504 |
| |
|
|
| Gorini, F.L.; Abachian, V.E.; Giussi, A.R.. |
| Southern hake (Merluccius australis) age and growth were estimated using sagittae otoliths obtained in research cruises and observers programs in the Argentine Sea (SW Atlantic). The only annual growth ring observed, formed by two bands, one hyaline and another opaque, corresponded to winter and summer growth, respectively. According to the analysis of otoliths edge, birthday was established on 1st July. Within the age range observed, that comprised 3-18 year old specimens, age groups 7, 8 and 9 were the most frequently identified in both sexes. Growth parameters estimates showed significant differences between them. |
| Tipo: Journal Contribution |
Palavras-chave: Age determination Age groups Growth rings Otoliths Merluccius australis Atlántico Sudoccidental; Argentina marine environment. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4223 |
| |
|
|
|
