| Автор | Velasco, E.M. |
| Автор | Jiménez-Tenorio, N. |
| Автор | Del Arbol, J. |
| Автор | Bruzón, M.A. |
| Автор | Baro, J. |
| Автор | Sobrino, I. |
| Дата выпуска | 2011 |
| dc.description | The biology, growth and reproduction of the axillary seabream, Pagellus acarne, was studied based on data obtained from the catches of the Andalusia commercial fleet operating off the coasts of southern Spain from October 2003 to September 2004. The axillary seabream had a very wide depth distribution, appearing from the surface down to 500 m depth. The length–weight relationship was given by TW = 0.0048 TL<sup>3.3207</sup> (R<sup>2</sup> = 0.98) (TW = total weight; TL = total length) for all fish from the Gulf of Cadiz and TW = 0.0093 TL<sup>3.1132</sup> (R<sup>2</sup> = 0.94) for all fish from the Alboran Sea. The proportion of females to males increases as length increases in both populations and the species is characterized by protandric hermaphroditism. Spawning males were present almost throughout the year although higher percentages were observed in spring and early summer. In females, the spawning period occurred mainly in spring. In both areas, the mean size at first maturity for males was smaller than for females. The mean lengths at first maturity were 18.04 cm for males and 21.7 cm for females from the Gulf of Cadiz, and 17.7 cm and 20.1 cm for males and females from the Alboran Sea, respectively. The average total fecundity was estimated at 290,070 and 173,509 oocytes for Atlantic and Mediterranean individuals, respectively. The parameters of the von Bertalanffy growth model were estimated by age readings of the 247 sagitta collected. Two rings, one opaque and one hyaline, were laid down each year on the otoliths. The opaque zone was formed during spring and summer and the hyaline one during the remaining months of the year. The relationship between otolith radius and total length of the fish was described by the equation: TL = 27.7 OR – 1.8 (r = 0.96) (where OR = otolith radius). The parameters of the fitted Von Bertalanffy growth equation were L<sub>∞</sub> = 31.65 cm, k = 0.21 yr<sup>−1</sup> in the Gulf of Cadiz and L<sub>∞</sub> = 32.14 cm, k = 0.17 yr<sup>−1</sup> in the Alboran Sea. |
| Формат | application.pdf |
| Издатель | Cambridge University Press |
| Копирайт | Copyright © Marine Biological Association of the United Kingdom 2010 |
| Тема | Pagellus acarne |
| Тема | age |
| Тема | growth |
| Тема | reproduction |
| Тема | maturity |
| Тема | Gulf of Cadiz |
| Тема | Alboran Sea |
| Название | Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain |
| Тип | research-article |
| DOI | 10.1017/S0025315410000305 |
| Electronic ISSN | 1469-7769 |
| Print ISSN | 0025-3154 |
| Журнал | Journal of the Marine Biological Association of the United Kingdom |
| Том | 91 |
| Первая страница | 1243 |
| Последняя страница | 1253 |
| Аффилиация | Velasco E.M.; Instituto Español de Oceanografía, Centro Oceanográfico de Cádiz |
| Аффилиация | Jiménez-Tenorio N.; I.F.A.P.A. El Toruño, Coto de la isleta, Camino Tiro Pichón s/n, 11500 El Puerto de Santa María (Cádiz), Spain |
| Аффилиация | Del Arbol J.; E.P. Desarrollo Agrario y Pesquero, Oficina Provincial, Estadio Ramón de Carranza, Fondo sur, Local 11, 11010 Cádiz, Spain |
| Аффилиация | Bruzón M.A.; I.F.A.P.A. El Toruño, Coto de la isleta, Camino Tiro Pichón s/n, 11500 El Puerto de Santa María (Cádiz), Spain |
| Аффилиация | Baro J.; Instituto Español de Oceanografía, Centro Oceanográfico de Málaga |
| Аффилиация | Sobrino I.; Instituto Español de Oceanografía, Centro Oceanográfico de Cádiz |
| Выпуск | 6 |
