כלב ים רוס

קריאת טבלת מיוןכלב ים רוס
מצב שימור
conservation status: least concernנכחדנכחד בטבעסכנת הכחדה חמורהסכנת הכחדהפגיעקרוב לסיכוןללא חשש
conservation status: least concern
ללא חשש (LC)‏[1]
מיון מדעי
ממלכה: בעלי חיים
מערכה: מיתרניים
על־מחלקה: בעלי ארבע רגליים
מחלקה: יונקים
סדרה: טורפים
תת־סדרה: דמויי כלב
משפחה: כלבי ים
שבט: כלבי ים לובודונים
סוג: Ommatophoca
מין: כלב ים רוס
שם מדעי
Ommatophoca rossii
גריי, 1844
תחום תפוצה
לעריכה בוויקינתונים שמשמש מקור לחלק מהמידע בתבנית

כלב ים רוס (שם מדעי: Ommatophoca rossii) הוא מין של כלב ים, היחיד מהסוג Ommatophoca, אשר חי רק באנטארקטיקה. נקרא ע"ש מגלהו סר ג'יימס קלארק רוס, שנתקל בלהקות ממין זה בעת משלחתו באנטארקטיקה ב-1839–1843. נפוץ פחות משאר כלבי הים האנטארקטיים.

כלב ים זה הוא קרוב משפחתי למינים נוספים של כלבי ים אנטארקטיים כמו לובודון הסרטנים (Lobodon carcinophaga), כלב ים ודל (Leptonychotes weddellii) וכלב ים נמרי (Hydrurga leptonyx) - כולם מהשבט כלבי ים לובודונים (Lobodontini).

אורכו של כלב הים 1.68–2.09 מטרים ומשקלו 129–216 ק"ג. הנקבות גדולות יותר ומגיעות לאורך 1.96–2.5 מטרים. העיניים של כלב ים רוס גדולות מאוד יחסית ומקלות על זיהויו כמו גם קולותיו המגוונים שהוא משמיע מעל ומתחת לקרח, שיכולים להישמע למרחק רב.

כלב הים חי רק באנטארקטיקה ובאוקיינוס הסמוך לה, שם הוא ניזון מדגים ודיונונים ובעיקר מהדג Pleuragramma antarcticum. טורפיו היחידים הם אורקה וכלב ים נמרי.

קישורים חיצוניים

ויקישיתוף מדיה וקבצים בנושא כלב ים רוס בוויקישיתוף

הערות שוליים

  1. ^ כלב ים רוס באתר הרשימה האדומה של IUCN


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