Effects of host plant contaminated with heavy metals on the life history traits of aphids (Brevicoryne brassicae L.)

WOS: 000244977800011Heavy metal contaminations can be considered as one of the serious environmental pollution and may have adverse effects on different organisms. This study was carried out to search how rearing the cabbage aphid (Brevicoryne brassicae L.) on heavy metal contaminated host plants affects aphid life history traits. The results revealed that both radish and cabbage host plants (Raphanus sativus L., Brassica oleracea L) contaminated separately with copper (Cu) and lead (Pb) have an important effects on life history traits of aphids. The life history traits such as fecundity (number of offspring produced per day) and fitness (intrinsic rate of population increase) were reduced about 30% when aphids were reared on contaminated host plants. However, no concise effects were found in case of development time (from birth to beginning of first reproduction). Reproduction potential of aphid population signficantly decreased and their mortality tended to be higher about 20% on contaminated host plants. Cu and Pb had different impacts on life history traits of aphids living on the same host plant, and the same heavy metal had different effects on aphid life history traits across host plants. The uptake of Cu and Pb by cabbage aphids feeding on contaminated host plants affected life history traits due to direct toxity or reduced food quality of host plants. Results are discussed in the context of the possible effects of heavy metal pollution on herbivore-host plant relationships. This study indicates that aphid-host plant system has several advantages to study the heavy metal pollution effects on food chain in nature

Developmental instability in cabbage aphid (Brevicoryne brassicae) populations exposed to heavy metal accumulated host plants

WOS: 000241182400008Random deviations from the perfect symmetry of normally bilaterally symmetrical characters exist during individual development as a result of various environmental conditions. Fluctuating asymmetry (FA) is often used as a measurement of developmental instability, and within-environmental variation (CV(e)) is also considered as an indicator of developmental deviations. These two parameters may indicate the quality of the environmental habitat of organisms. For herbivore insects, such as aphids, any change in their host plants conditions is important and directly affects their development. The presented investigation revealed that both Lead (Pb) and Copper (Cu) accumulation in different host plants resulted in a significant amount of deviations from bilateral symmetry in cabbage aphid (Brevicoryne brassicae). Cabbage aphid populations showed higher FA and CV, on heavy metal accumulated cabbage and radish than on non-contaminated cabbage and radish plants. However, the pattern between developmental instability and fitness measurements was inconsistent. Thus, this study does not support the hypothesis that asymmetry is a valuable bioindicator of developmental instability. (c) 2005 Elsevier Ltd. All rights reserved

Zinc and cadmium accumulation in cabbage aphid (Brevicoryne brassicae) host plants and developmental instability

WOS: 000263246700008Developmental instability in morphological characters can occur during individual development due to various environmental stresses. Fluctuating asymmetry (FA) is often used as a measurement of developmental instability, but within-environment variation (CV(e)) is also considered an indicator of developmental instability. Cabbage aphid (Brevicoryne brassicae) populations were reared on zinc- (Zn) or cadmium- (Cd) contaminated cabbage and radish plants. Developmental instability indicators were measured and their relations with fitness were explored. Results revealed that cabbage aphids exposed to Cd and Zn displayed considerable developmental instability, particularly fluctuating asymmetry. Differences in developmental instability between the two metals were also detected, as well as differences between the two developmental instability measurements. For almost all measured traits, FA was greater on Cd- and Zn-contaminated compared to non-contaminated host plants. In contrast, CV(e) of some traits was greater on non-contaminated host plants, yet for other traits CV(e) was greater on contaminated host plants. There were also non-significant inverse relationships between FA and fitness of cabbage aphid populations. Due to weak correlations between FA and different patterns of two developmental instability measurements, this study does not support the hypothesis that developmental instability is a useful bioindicator of environmental quality

New records of aphid species (Hemiptera: Aphidoidea) for the Turkish fauna from Samsun province

WOS: 000281496500018Nine aphid species from the Ondokuz Mayis University Kurupelit campus in Samsun province, Turkey, were determined as new records for the Turkish fauna. These species were Aphis helianthi Monell in Riley & Monell, 1879; Macrosiphum impatientis (Williams, 1911); Macrosiphum mordvilkoi Miyazaki, 1968; Macrosiphum pallidum (Oestlunt, 1887); Uroleucon pseudoambrosiae (Olive, 1963); Cinara maghrebica Mimeur, 1934; Cinara wahluca Hottes, 1952; Stomaphis cupressi (Pintera, 1965); and Maculolachnus submacula (Walker, 1848)

Further contributions to the Turkey Aphid (Hemiptera: Aphidoidea) Fauna

WOS: 00029821680001011 aphid species are reported as new records for Turkey aphid fauna at the end of the study carried out in Samsun Province of Turkey between 2009 and 2010. New records are Aphis gerardianae Mordvilkoi, Aphis loti Kaltenbach, Aphis middletoni Thomas, Aphis pashtshenkoae Remaudiere, Aphis proffti (Borner), Aphis pseudocardui Theobald, Chaitophorus lapponum Ossiannilsson, Cinara watanabei Inouye, Lachnus longirostrum David and Ghosh, Sipha arenarii Mordvilko and Uroleucon kashmiricum (Verma). With these new records, the number of species of aphids listed for Turkey has increased to 475.Ondokuz Mayis University Scientific Research Projects Commission [PYO.FEN.1904.09.030]The financial support of the Ondokuz Mayis University Scientific Research Projects Commission for Project No. PYO.FEN.1904.09.030 is gratefully acknowledged. The authors also thank Gregory T. Sullivan of OYDEM at the same university for editing the English in an earlier version of this manuscript

Additions to the Turkish Aphid fauna (Hemiptera: Aphidoidea: Aphididae)

WOS: 000298720500021As a result of the study carried out between 2007 and 2009 in far Eastern part of the Black Sea Region of Turkey to determine aphid species on herbaceous plants, 17 species were determined as new records for Turkey aphid fauna. New recorded species are Aphis acanthoidis (Bonier 1940), Aphis brunellae Schouteden 1903, Aphis genistae Scopoli 1763, Aphis longituba Hille Ris Lambers 1966, Aphis molluginis (Bonier 1950), Aphis pseudocomosa Stroyan 1972, Aphis thomasi (Bonier 1950), Capitophorus inulae (Passerini 1860), Metopolophium tenerum Hille Ris Lambers 1947, Microlophium sibiricum (Mordvilko 1914), Sitobion miscanthi (Takahashi 1921), Uroleucon ambrosiae (Thomas 1878), Uroleucon compositae (Theobald 1915), Uroleucon kikioense (Shinji 1941), Uroleucon pulicariae (Hille Ris Lambers 1933), Uroleucon scorzonerae Danielsson 1973, Uroleucon siculum Barbagallo & Stroyan 1980. With these new records, the number of the species increased to 472 in Turkey aphid fauna.Turkish Scientific Council [TUBITAK-107T450]Authors thank to the Turkish Scientific Council (TUBITAK-107T450) for funding this project and number of aphid specialists for discussing the findings of the study during 8th Aphid Special Interest Group Meeting

New Records of Aphidoidea from Turkey

WOS: 000272196100001Six aphid species were determined as new records for Turkey aphid fauna from far Eastern Black Sea Region of Turkey, where no studies have been carried out related with aphids. These species are Adelges cooleyi, Adelges pectinatae, Aphis impatientis, Betulaphis quadrituberculata, Periphyllus aceris and Pterocallis albidus. With these new records, the total number of aphid species in Turkey comes up to 446, The findings of the presented study and other recent studies showed that a higher number of aphid species is expected in Turkey due to particular ecological, geographical, climatic, continental position and floristic features of Turkey.Turkish Scientific Council (TUBITAK)This study is supported by the Turkish Scientific Council (TUBITAK)

Aphid (Hemiptera: Aphididae) species determined on herbaceous and shrub plants in Bartin Province in Western Blacksea Region of Turkey

This study aimed to find out the Aphidoidea species feeding on herbaceous and shrub plants of Bartin province. As a result, total of 28 aphid species belonging to 14 genus and 4 tribes of the super family Aphidoidea were determined. Of these determined species, Aphis fabae Scopoli, Aphis farinosa J. F. Gmelin, Aphis gossypii Glover, Aphis nerii Boyer de Fonscolombe, Macrosiphum rosae ( Linnaeus), Myzus ( Nectarosiphon) persicae ( Sulzer) were previously recorded from study area while remaining of the identified species were new records for Bartin province in Turkey