A New Pest Thrips Species in Citrus in Adana Province: Scirtothrips dorsalis Hood (Thysanoptera: Thripidae)

Abstract

The chili thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae), was first detected on blueberry fruits in 2020 in Adana Province, Türkiye. In 2024, it was found to damage to citrus plants in Adana, specifically affecting fresh shoots in July, leading to stunted growth, leaf curling, and discoloration, all of which negatively impacted trees development. The surveys conducted on different citrus varieties (orange, mandarin, lemon, grapefruit) revealed that almost all shoots were infested, with all developmental stages of the pest, except the pupal stage, being observed. The thrips fed on young fruits, causing silvery ring-like scar tissue both on the fruit surface and around the fruit stem. It was noted that the population density of the pest was closely related to the growth and density of young shoots on trees. In this regard, significant damage caused by this thrips was observed, particularly in the W. Murcott mandarin and Meyer lemon varieties. The thrips was not found on leaves of older shoots. Several control measures were proposed, and the results were discussed.

Keywords

• Chili thrips
• citrus
• new pest
• Adana
• Türkiye.

Adana İli’nde Turunçgillerde Yeni Bir Zararlı Thrips Türü: Scirtothrips dorsalis Hood (Thysanoptera: Thripidae)

Abstract

Acı biber thripsi, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae), ilk olarak 2020 yılında Adana ilinde yaban mersini meyvelerinde tespit edilmiştir. Adana İlinde 2024 yılında turunçgillerde temmuz ayında oluşan taze sürgünlerdeki yapraklarda gelişme geriliği, yaprakların kıvrılması ve renk açılması gibi ağaç gelişmesini olumsuz bir şekilde etkileyen zarara neden olmuştur. Sürvey yapılan farklı turunçgil çeşitlerinde sürgünlerin neredeyse tamamının bulaşık olduğu belirlenmiş olup, zararlı thripsin pupa dönemi hariç diğer dönemleri saptanmıştır. Thrips beslenerek, genç meyvelerde gerek meyve yüzeyinde ve gerekse meyve sapının etrafında hale şeklinde gümüşümsü yara dokusu oluşturmuştur. Zararlının popülasyon yoğunluğunun ağaçlarda genç sürgün gelişmesi ve yoğunluğuyla yakından ilgili olduğu, bu bağlamada, özellikle W. Murcott mandarin ve Meyer limon çeşitlerinde bu thripsin zararının önemli düzeyde yoğun olduğu gözlenmiştir. Bu thrips yaşlı sürgünlerdeki yapraklarda bulunamamıştır. Zararlının mücadelesinde bazı öneriler sunulmuş olup, sonuçlar tartışılmıştır.

Keywords

• Acıbiber thripsi
• turunçgil
• yeni zararlı
• Adana
• Türkiye

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