Small strawberry aphid

Systematic position: The small strawberry aphid (Chaetosiphon minus) is a member of the order Hemiptera and the family Aphididae. It is a specialized pest that has evolved to feed primarily on plants within the Rosaceae family, causing specific agricultural challenges for strawberry growers globally.

Host crops: The species is primarily associated with cultivated strawberries (Fragaria × ananassa). While it focuses on strawberry plants, it can occasionally be found on wild strawberry relatives, making integrated control essential for preserving the yield potential of commercial berry fields.

Biology and life cycle: The life cycle is characterized by rapid development and high reproductive rates. It typically overwinters as eggs on host plants. During the growing season, successive generations of aphids proliferate, with both apterous (wingless) and alate (winged) forms appearing to maximize colony expansion and colonization of new host tissues.

Damage and harm: Feeding activities lead to chlorosis, leaf curling, and stunted growth of the plant parts. Beyond direct physiological stress caused by nutrient depletion, Chaetosiphon minus is a significant vector for various plant viruses. These pathogens often cause long-term damage, leading to reduced fruit size and eventual plantation decline.

Protection measures: Management strategies focus on an integrated approach to maintain low aphid populations. Key actions include:

• Regular field scouting to detect early infestations;
• Ensuring the use of certified virus-free strawberry runners;
• Application of selective aphicides when economic thresholds are reached;
• Promoting biodiversity to support natural predators like ladybirds and lacewings.