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The present study was carried out in Diyarbakır (Sur district) province in Southeastern Anatolia Region of Turkey in 2019. Adults, nymphs and eggs of Heteroptera were collected on Alcea spp in Diyarbakır province of Turkey during September-October 2019 and brought to the laboratory for rearing. The nymphs were reared at the temperature of 26±1°C, r...
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... that the bugs congregate on walls of buildings without feeding; however, these aggregations produce an unpleasant odor. They are also attracted by light and made urban nuisance. New record host in Turkey: In this study, Oxycarenus hyalinipennis was found to fed on Alcea species (Magenta, white and pink flowering) during adult and nymph stages (Fig. ...
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Successive breeding was attempted for the Japanese westernmost population (inhabiting Municipal Kurosaki-Nagata Eco-park in Nagasaki City, Kyushu) of Limnoporus esakii (Miyamoto) (Insecta: Heteroptera: Gerridae) to investigate the immature forms and life history. We herein provide brief diagnoses of all immature stages (egg to final instar nymph) a...
Citations
... Originally from Africa, cotton seed bugs have rapidly expanded their distribution to encompass regions in Asia, Europe, the Middle East, South America, and Caribbean [5]. During outbreaks in Israel, this insect has been observed aggregating on a variety of trees and shrubs, such as palms, fig trees, avocado trees, and persimmon trees, causing severe damage to non-malvaceous fruits and seeds [6]. Adults and nymphs commonly aggregate in tight clusters, especially in seed pods or bolls that emit a pungent odor. ...
Understanding the fundamental life cycle and reproductive behavior of a pest insect is essential for developing efficient control strategies; however, much of this knowledge remains elusive for a multitude of insects, including the cotton seed bug, Oxycarenus hyalinipennis. Here, we report the results of our comprehensive study on the cotton seed bug’s life cycle, including mating behavior, adult lifespan, and egg-to-adulthood development. Our findings showed that adult males and females began mating as early as three days after emerging (75%), and the frequency of mating increased to 100% by the fifth day. Mated females commenced oviposition on cotton seeds as early as two days after mating, with a cumulative mean number of 151 fertile eggs oviposited during the first oviposition cycle. Furthermore, around 10% of eggs from both mated and unmated females remained unfertilized. The first instar nymphs began emerging approximately seven days following oviposition. To track their development, we monitored the newly hatched nymphs daily until they reached adulthood. There were five nymphal stages, which cumulatively took roughly 28 to 30 days. Notably, mating positively influenced the survivorship and lifespan of adult O. hyalinipennis. Mated males and females exhibited median lifespans of 28 and 25 days, respectively. In contrast, unmated males and females only lived for a median lifespan of 9.5 days, about one-third that of the mated O. hyalinipennis. Our study provides key insights into the O. hyalinipennis life history for new IPM strategies.
Cotton seed bug, Oxycarenus hyalinipennis (Hemiptera: Oxycarenidae), was discovered in southern California in 2019. Surveys have found it within 160 km of cotton producing areas. While often only a minor pest in its native range, there are justified concerns that O. hyalinipennis could become a major pest of US-grown cotton. To proactively prepare for this possibility, 12 US-registered formulations and 1 experimental formulation were assessed in the laboratory for efficacy against O. hyalinipennis, using both contact and ingestion bioassays. Six formulations, consisting of acephate, dinotefuran, flupyradifurone, and imidacloprid with initial efficacy against O. hyalinipennis were used for subsequent dose-response bioassays. These compounds had LC50 values well below maximum labeled rates, although LC99.9 values often exceeded maximum label rates. Results indicate that if O. hyalinipennis infests cotton production regions, both selective and broad-spectrum options will be available for management. These findings establish a baseline for developing an integrated pest management program that can reduce potential damage from O. hyalinipennis, preserve natural enemies, and contribute to resistance management in cotton production areas.