הם גורמים לעכברים לחפש חתולים, לג׳וקים ונמלים לוותר על רצונם החופשי, ולבני אדם להרגיש נוירוטיים ולבצע תאונות דרכים. מסתבר שלפחות שליש מאתנו נושאים טפיל קטן ומסוכן שמתמרן את מוחנו מבלי שנהיה מודעים. איך הם עושים את זה ומה ניתן לעשות נגד זה?

רקפת תבור | 2 בספטמבר 2014 | מדע וטכנולוגיה | 8 דק׳

הטפילים ששולטים בכם

ראיתם פעם עכבר שהולך ומחפש בשקיקה חתולים? לעכברים בדרך כלל יש סלידה מולדת מריח של חתולים, דבר שעוזר להם לשרוד. אפילו עכברי מעבדה שאבות אבותיהם מעולם לא נתקלו בחתולים מתאפיינים באותה סלידה מולדת. אבל יש יצור קטן שיכול לנטרל את הסלידה הזאת.

קוראים לו Toxoplasma gondii, טוקסופלזמה בקיצור - טפיל שנוהג להתארח אצל מגוון רחב של פונדקאים: ארנבים, דובים, ציפורים ואפילו אנשים. אבל יש מקום אחד שחביב עליו במיוחד - מעיים של חתולים. רק שם הוא יכול להתרבות מינית ולהשלים את מחזור החיים שלו. אבל מה הוא יכול לעשות אם הפונדקאי הנוכחי שלו הוא דווקא עכבר? התשובה למקרה הזה פשוטה יחסית - הטפיל צריך לבצע כמה מניפולציות על ההתנהגות של העכבר כדי שהחתול ימצא אותו במהרה, ואז דרכו של הטפיל לתוך המעיים של החתול תהיה קצרה.

רוצה לקרוא עוד?

להמשך קריאה הירשמו או התחברו

Toxoplasma gondii, Jitinder P. Dubey/Wikimedia Commons

Toxoplasma gondii, Jitinder P. Dubey/Wikimedia Commons

אילוסטרציה: מגזין אפוק

ויטמין חחח: התרופה שהרופאים שוקלים לרשום לכם

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מאיה מזרחי

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המחשבה כתרופה או כרעל – המחקרים שמראים שהכול באמת בראש

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אילוסטרציה: Shutterstock

״נדיר ביותר ובלתי סביר״: המדענים שחוקרים ילדים עם זיכרונות מחיים קודמים

מאיה מזרחי

איור אילוסטרציה: מגזין אפוק, Shutterstock

האם הסוד לחיי הנעורים נמצא במעמקי גופנו?

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הלב מזוהה אוניברסלית כסמל לאהבה, ובאופן מעניין, האהבה יכולה להשפיע באופן משמעותי על הלב עצמו | אילוסטרציה: מגזין אפוק, Shutterstock

חשבנו שאהבה היא רק רגש – המחקרים מראים שהיא גם תרופה

רקפת תבור

הירשמו לניוזלטר שלנו וקבלו תוכן חדש למייל מדי חודש

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