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Study and Determination of the Most Important Biological Parameters of the Predator, Nephus includens Kirch and Comparison with Parameters of the Famous Introduced Predator, Cryptolaemus montrouzieri Mulsant

دراسة قيم أهم المؤشرات البيولوجية و تحديدها لدى مفترس البق Nephus includens Kirch المحلي الدقيقي و مقارنتها مع مؤشرات المفترس الشهير المدخل Cryptolaemus montrouzieri Mulsant

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 Publication date 2006
  fields Plant Protecion
and research's language is العربية
 Created by Shamra Editor




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Cryptolaemus montrouzieri Mulsant and the local predator, Nephus includens Kirch were reared on the Planococcus citri Risso in Lattakia Insectary for Rearing Natural Enemies. A comparative study was done applying the most important biological parameters (Predation rate, life cycle, longevity, starvation tolerance, fecundity, sex ratio, adult emergence) for both predators under laboratory conditions. Research results proved the overpass of that predation rate of C. montro- uzieri males and females, was greater than that of males and females of N. includens, by three folds with significant differences. Similarly the perdition rate of the third instar, in first predator over passed three times the rate of the second predator, with significant differences reaching 10.53± 2.41, 30.87±3.76 nymphs (second nymphal instars)/day. The results proved a significant rise of fecundity index in females of C. monrtouzieri over that of predator, N. includens by 1.8 times (50.70±13.63, and 107.3±14.87, respectively), while both predators were equal in values of other biological parameters with no significant differences (biological development stages, longevity of males and females, adults emergence and sex ratio).


Artificial intelligence review:
Research summary
تتناول هذه الدراسة مقارنة بين المفترس المحلي Nephus includens Kirch والمفترس المدخل Cryptolaemus montrouzieri Mulsant، حيث تم تربيتهما على حشرة Planococcus citri Risso في مختبر الحشرات في اللاذقية. تم تقييم أهم المعايير البيولوجية لكلا المفترسين تحت ظروف المختبر، مثل معدل الافتراس، دورة الحياة، طول العمر، تحمل الجوع، الخصوبة، نسبة الجنس، ونسبة خروج البالغين. أظهرت النتائج أن معدل الافتراس للذكور والإناث من C. montrouzieri كان أكبر بثلاثة أضعاف من N. includens. كما أظهرت النتائج زيادة كبيرة في مؤشر الخصوبة لدى إناث C. montrouzieri مقارنة بـ N. includens. ومع ذلك، لم تكن هناك فروق ذات دلالة إحصائية في القيم الأخرى للمعايير البيولوجية بين المفترسين.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة في مجال مكافحة الآفات البيولوجية، حيث تقدم مقارنة شاملة بين مفترسين مختلفين. ومع ذلك، كان من الممكن أن تكون الدراسة أكثر شمولية إذا تم تضمين المزيد من التفاصيل حول الظروف البيئية التي تم فيها إجراء التجارب. كما أن الدراسة لم تتناول تأثير هذه المفترسات على الأنواع الأخرى من الآفات، مما قد يكون له تأثير كبير على فعالية المكافحة البيولوجية. بالإضافة إلى ذلك، كان من الممكن تحسين الدراسة من خلال تقديم تحليل اقتصادي لتكلفة تربية واستخدام كل من المفترسين في مكافحة الآفات.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي من الدراسة هو مقارنة المعايير البيولوجية بين المفترس المحلي Nephus includens والمفترس المدخل Cryptolaemus montrouzieri تحت ظروف المختبر.

  2. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    النتائج الرئيسية أظهرت أن معدل الافتراس والخصوبة لدى Cryptolaemus montrouzieri كانا أعلى بكثير من Nephus includens، بينما لم تكن هناك فروق ذات دلالة إحصائية في القيم الأخرى للمعايير البيولوجية بين المفترسين.

  3. ما هي التوصيات التي يمكن استخلاصها من الدراسة؟

    توصي الدراسة باستخدام Cryptolaemus montrouzieri كمفترس أكثر فعالية في مكافحة حشرة Planococcus citri نظراً لمعدل افتراسه العالي وخصوبته المرتفعة.

  4. هل تناولت الدراسة تأثير المفترسات على الأنواع الأخرى من الآفات؟

    لا، الدراسة لم تتناول تأثير المفترسات على الأنواع الأخرى من الآفات، وهو جانب يمكن أن يكون له تأثير كبير على فعالية المكافحة البيولوجية.


References used
Ahmed, S. (1961). The Punjab Fruit Journal. The quarterly Official Organ of the West Pakistan Co-Operative Fruit Development Board LTD. Ayub Agricultural Research Institute Lyallpur (West Pakistan). Ph. D. (Florida) pp469
Al-Khateeb, N. and Raie, A. (2001). A study of some Biological Parameters of the Predator, Cryptolaemus montrouzieri (Mulsant) Introduced to Planococcus citri Risso in Syria, and estimate of its predation rate in the Laboratory. Arab. J. Pl. Prot. 19, 131-134
Bodenheimer, F. S. (1928). Contribution towards the knowledge of the citrus insects in Palestine. Preliminary report on the work of the Palestine breeding laboratory at Petahtikwa, 1924-27. Palestine Citrog, 1, 3-16
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