Loading...
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 1.35 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Neste trabalho foi estimado o tamanho da pescada (Merluccius merluccius), na primeira maturação, na costa portuguesa pertencente à área de distribuição do stock sul (Divisões VIIIc e IXa do ICES).
Os dados recolhidos nos cruzeiros de primavera e outono de 2000 a 2010 foram analisados numa base anual, considerando em separado fêmeas, machos e sexos combinados. O L50 foi sempre superior para as fêmeas, com um valor médio de 41,3 cm para todos os anos estudados, e de 27,1 cm para os machos, o que se traduziu num comprimento médio de 34,5 cm dos dois sexos na primeira maturação para o período 2000-2010. Foram também analisados os valores da temperatura da superfície do mar, que registaram uma média de 16,7ºC para este período.
In this paper we estimated the size of the hake (Merluccius merluccius) at first maturity of the Portuguese coast, belonging to the distribution area of the southern stock (ICES Divisions VIIIc and IXa). The data collected in the spring and fall cruises from 2000 to 2010 were analyzed on an annual basis, considering separately females, males and sexes combined. The estimated L50 had values higher for females, with a mean value of 41.3 cm for all the years studied, and 27.1 cm for males, which resulted in 34.5 cm for both sexes as medium length at first maturity for the period 2000-2010. We also analyzed the values of sea surface temperature, which showed an average of 16.7 ºC for this period.
In this paper we estimated the size of the hake (Merluccius merluccius) at first maturity of the Portuguese coast, belonging to the distribution area of the southern stock (ICES Divisions VIIIc and IXa). The data collected in the spring and fall cruises from 2000 to 2010 were analyzed on an annual basis, considering separately females, males and sexes combined. The estimated L50 had values higher for females, with a mean value of 41.3 cm for all the years studied, and 27.1 cm for males, which resulted in 34.5 cm for both sexes as medium length at first maturity for the period 2000-2010. We also analyzed the values of sea surface temperature, which showed an average of 16.7 ºC for this period.
Description
Keywords
Pescada Merluccius merluccius Maturação Costa portuguesa
Pedagogical Context
Citation
Costa, A.M., 2014. Variação do comprimento da pescada na primeira maturação entre 2000 e 2010 na costa portuguesa. Relat. Cient. Téc. do IPMA, nº 1. 16 p.
Publisher
Instituto Português do Mar e da Atmosfera