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الحيوانات التي يحمل فيها الذكر

24 ديسمبر 2012

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الحيوانات التي يحمل فيها الذكر

هناك نوعان في المملكة الحيوانية الذي يحمل فيها الذكر: فرس البحر و السمكة الانبوبية.
قد يعجبك ايضا

يحتوي جسم فرس البحر على حقيبة حاضنة يحمل فيها البيض التي تضعها الاناث،عند التزاوج يلتف ذيلي الذكر والأنثى على بعضهما، ثم تقوم الانثى بمحاذاة أنبوب طويل مع حقيبة الذكر الحاضنة، وتنقل البيض خلال الانبوب الى الحقيبة حيث يقوم بتلقيحها.
ويتطور الجنين خلال فترة تتراوح بين 10 أيام و 6 اسابيع اعتمادا على النوع وحالة الماء.
الحقيبة الحاضنة تنظم درجة الملوحة للبيوض، حيث تزداد تدريجيا لتتلائم مع درجة الملوحة في الماء. وعندما يخرج الصغار يكونون مستقلين عن الأبوين.

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