| Autor: |
Anderson, Alyssa M., Friedges, Cody, Lozinski, Louis, Nyquist, Corrie, Durnin, Tessa, Ferrington Jr., Leonard C. |
| Předmět: |
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| Zdroj: |
Aquatic Insects; Mar2023, Vol. 44 Issue 1, p52-63, 12p |
| Abstrakt: |
Chironomidae (Diptera) are among the few insects with representatives that emerge during temperate winters; past work shows winter-emerging species are long-lived. We extend previous studies, examining the influence that varying air temperatures have on longevity and oviposition rates, and whether oviposition status impacts longevity. Adult chironomids (n = 339) were collected during winter of 2020 near a spring-fed stream in Camden State Park (Minnesota, USA). Insects were separated into 2 °C, 6 °C, and ambient outdoor (AO) temperature treatment groups to determine differential longevity and oviposition rates. Behaviours were monitored daily until death. The 2 °C group lived significantly longer than both 6 °C and AO groups, with mean longevities of 19.8, 14.9, and 13.9 days, respectively. Additionally, females held at 6 °C appear to have higher oviposition rates compared to 2 °C and AO groups. Results suggest low temperatures may delay or inhibit oviposition, suggesting a potential tradeoff of oviposition rate in favour of longevity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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