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Biologie und Fischerei des Kaisergranats in Algerien
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ISBN10: 6205638495
ISBN13: 9786205638491
Publisher: Verlag Unser Wissen
Published: Feb 8 2026
Pages: 160
Weight: 0.49
Height: 0.37 Width: 6.00 Depth: 9.00
Language: German
ISBN13: 9786205638491
Publisher: Verlag Unser Wissen
Published: Feb 8 2026
Pages: 160
Weight: 0.49
Height: 0.37 Width: 6.00 Depth: 9.00
Language: German
Diese Studie befasst sich mit dem Kaisergranat Nephrops norvegicus und wird am Küstenstreifen von Ain Témouchent durchgeführt, um den Mangel an Daten über seine Biologie und Fischerei zu beheben. Ziel ist es, seine biologischen Merkmale, seinen Fischfang und den Stand seiner Nutzung über einen Zeitraum von 12 Monaten zu beschreiben. Die Fortpflanzung findet von November bis April statt, mit maximaler Gonadenreifung im März und einer Grö e der ersten Geschlechtsreife bei den Weibchen von 33 mm. Die Männchen haben höhere Wachstumsparameter als die Weibchen, mit einer Lebensdauer von bis zu 18 Jahren. Der Kaisergranat ist in Tiefen zwischen 180 und 550 Metern verbreitet, wobei die höchste Dichte zwischen 280 und 400 Metern in der Nähe von Korallen erreicht wird. Die tiefsten Fanggebiete in Algerien werden kaum genutzt, was eine fischreichere Begleitfauna erklärt. Der Fischereiaufwand variiert zwischen den Mittelmeersektoren und der Region um Beni Saf. Die Analysen zeigen eine hohe Gesamtmortalität, wobei sich der Kaisergranatbestand an der minimalen Nutzungsgrenze befindet und eine umsichtige Bewirtschaftung erfordert. Diese Arbeit trägt zu einem besseren Verständnis dieser Art bei und unterstützt die Regulierung ihrer Fischerei im westlichen Mittelmeerraum.
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