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1 June 2009 Life Cycle, Reproductive Maturation, and Wing Color Changes in Nomadacris septemfasciata (Orthoptera: Acrididae) in Madagascar
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Abstract

Red locusts, Nomadacris septemfasciata (Serville, 1838), frequently damage crops in Madagascar, and this problem has worsened in recent years, likely because of intensive deforestation. Little is known about this pest in Madagascar, contrary to southern Africa. We studied the reproductive maturation in relation to climate and vegetation in northwestern Madagascar. Our results show that adults overwinter, with females undergoing a 6- to 7-mo-long reproductive diapause, followed by a variable quiescent period of 2–4 wk, depending on ecological conditions, during which vitellogenesis is delayed,. Food availability in response to good rains at the end of spring seems to be the key factor for triggering the end of quiescence and the beginning of rapid vitellogenesis (= reproductive maturation). Hind wing color in adults changes throughout the year and was correlated with age and reproductive state in females and seasonal climate change.

© 2009 Entomological Society of America
A. Franc and M. H. Luong-Skovmand "Life Cycle, Reproductive Maturation, and Wing Color Changes in Nomadacris septemfasciata (Orthoptera: Acrididae) in Madagascar," Environmental Entomology 38(3), 569-576, (1 June 2009). https://doi.org/10.1603/022.038.0308
Received: 23 January 2008; Accepted: 1 March 2009; Published: 1 June 2009
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