caa a22 4500 388035536 CHVBK 20180307125003.0 cr unu---uuuuu 161130e199808 xx s 000 0 eng 10.1017/S000748530004219X doi S000748530004219X pii (NATIONALLICENCE)cambridge-10.1017/S000748530004219X Survival and mortality of grasshopper egg pods in semi-arid cereal cropping areas of northern Benin [Elektronische Daten] Surveys of egg pods of agriculturally important grasshoppers were carried out in northern Benin between 1992 and 1995. Searches were made of oviposition sites under shrubs of the perennial legume Piliostigma thonningi along field margins. In 1993 and 1995, surveys were extended to include sorghum, Sorghum bicolor, and the perennial thatch grass Vetiveria nigritana. The four principal grasshopper species found at these oviposition sites were Hieroglyphus daganensis Krauss, Cataloipus fuscocoeruleipes Sjöstedt, Kraussaria angulifera (Krauss) and Tylotropidius gracilipes Brancsik comprising 86% of 4545 identified egg pods while 651 egg pods could not be identified to species level. Predation by meloid beetles (Epicauta, Mylabris and Psalydolytta spp.) varied between 0 and 50% for the four dominant grasshopper species. From 1993 and 1994 data, nymphal eclosion from egg pods damaged by meloids was significantly lower than emergence from undamaged egg pods. The hymenopterous parasitoids Scelio africanus Risbec and S. mauriticanus Risbec were reared from the four dominant grasshopper species and parasitism levels of 0.0-3.3% were recorded from these hosts. There were significant differences in nymphal emergences between parasitized and unparasitized egg pods of H. daganensis. Copyright © Cambridge University Press 1998 Shah P.A. Institute of Microbiology, Swiss Federal Institute of Technology, LFV E14, ETH-Zentrum, CH-8092 Zurich, Switzerland Godonou I. International Institute of Tropical Agriculture, Plant Health Management Division, Cotonou, BP 08-0932, Republic of Benin Gbongboui C. International Institute of Tropical Agriculture, Plant Health Management Division, Cotonou, BP 08-0932, Republic of Benin Hossou A. Service Protection des Végétaux, Porto Novo, BP 58, Republic of Benin Lomer C.J. International Institute of Tropical Agriculture, Plant Health Management Division, Cotonou, BP 08-0932, Republic of Benin Bulletin of Entomological Research Cambridge University Press 88/4(1998-08), 451-459 0007-4853 88:4<451 1998 88 BER https://doi.org/10.1017/S000748530004219X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S000748530004219X text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shah P.A. Institute of Microbiology, Swiss Federal Institute of Technology, LFV E14, ETH-Zentrum, CH-8092 Zurich, Switzerland NATIONALLICENCE 700 1- Godonou I. International Institute of Tropical Agriculture, Plant Health Management Division, Cotonou, BP 08-0932, Republic of Benin NATIONALLICENCE 700 1- Gbongboui C. International Institute of Tropical Agriculture, Plant Health Management Division, Cotonou, BP 08-0932, Republic of Benin NATIONALLICENCE 700 1- Hossou A. Service Protection des Végétaux, Porto Novo, BP 58, Republic of Benin NATIONALLICENCE 700 1- Lomer C.J. International Institute of Tropical Agriculture, Plant Health Management Division, Cotonou, BP 08-0932, Republic of Benin NATIONALLICENCE 773 0- Bulletin of Entomological Research Cambridge University Press 88/4(1998-08), 451-459 0007-4853 88:4<451 1998 88 BER CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge