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1. Differences in the sugar composition of the honeydew of polyphagous brown soft scale Coccus hesperidum (Hemiptera: Sternorrhyncha: Coccoidea) feeding on various host plants

Creator:
Golan, Katarzyna and Najda, Agnieszka
Type:
article, články, model:article, and TEXT
Subject:
Zoologie, entomologie, Coccoidea, Coccus hesperidum, brown scale insects, honeydew, host plants, soft scale, sugar composition, 2, and 59
Language:
English
Description:
Plant chemical composition is an important determinant of host plant-insect interactions. For many insects sugars are the main factors determining the acceptability of a plant. This study investigated changes in plant chemical composition and differences in sugar composition of different host plants induced by the feeding of Coccus hesperidum L. (Hemiptera: Sternorrhyncha: Coccoidea). Present in plant extracts and honeydew there were three monosaccharide sugars: glucose, fructose and arabinose, and one disaccharide - sucrose. Arabinose was only found in extracts of Ficus benjamina plants. The sugar content of the honeydew was greater than in the extracts of control plants and lower than that in the extracts of infested plants. The honeydew collected from C. hesperidum feeding on the three plant species differed significantly in sugar content. Extracts of coccid infested plants of the three species used in this study contained more sugar than the un-infested control plants. The results show that honeydew composition of scale insects differ and the differences reflect the chemical composition of the host plants. and Katarzyna Golan, Agnieszka Najda.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2. Ovaries of Puto superbus and Ceroputo pilosellae (Hemiptera: Coccoidea): morphology, ultrastructure, phylogenetic and taxonomic implications

Creator:
Michalik, Anna, Kalandyk-Kolodziejczyk, Malgorzata, Simon, Ewa, Kobialka, Michal, and Szklarzewicz, Teresa
Type:
article, články, model:article, and TEXT
Subject:
Zoologie, zoologie, entomologie, Hemiptera, Coccoidea, Puto superbus, Ceroputo pilosellae, ovariole, germ cells, trophocyte, oocyte, scale insects, 2, and 59
Language:
English
Description:
Ovaries of Puto superbus and Ceroputo pilosellae are composed of numerous short telotrophic ovarioles that are arranged around the distal part of the lateral oviduct. An individual ovariole consists of a distal trophic chamber (= tropharium) and proximal vitellarium. The tropharia enclose individual trophocytes (= nurse cells) and early previtellogenic oocytes termed arrested oocytes. A single oocyte develops in each vitellarium. Analysis of serial sections has shown that ovarioles of P. superbus contain from 16 to 51 germ cells (13–43 trophocytes, 2–7 arrested oocytes, 1 developing oocyte) while those of C. pilosellae from only 8 to 10 germ cells (5–7 trophocytes, 0–2 arrested oocytes, 1 developing oocyte). The classification and phylogeny of scale insects are discussed taking into consideration the results of this study., Anna Michalik ... [et al.]., and Obsahuje seznam literatury
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public