The Experts below are selected from a list of 147 Experts worldwide ranked by ideXlab platform
M.j. Verdú - One of the best experts on this subject based on the ideXlab platform.
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Seasonal trends, sampling plans and parasitoid complex of the Chinese wax scale, Ceroplastes sinensis Del Guercio (Hemiptera: Coccidae), in Mediterranean citrus groves.
Bulletin of entomological research, 2014Co-Authors: M.t. Martínez-ferrer, J.m. Campos-rivela, M.j. VerdúAbstract:Seasonal trends and the parasitoid complex of Chinese wax scale (Ceroplastes sinensis) was studied from July 2010 to February 2013. Six commercial citrus groves located in northeastern Spain were sampled fortnightly. Chinese wax scale completed a single annual generation. Egg oviposition started in May and continued until mid-July. Egg hatching began in mid-June, and in the first quarter of August, the maximum percentage of hatched eggs was reached. In the same groves, the parasitoid species of C. sinensis were determined together with their seasonal trends, relative abundance and occurrence on C. sinensis. Four hymenoptera were found parasitizing C. sinensis, mainly on third instars and females: Coccophagus ceroplastae (Aphelinidae), Metaphycus helvolus (Encyrtidae), Scutellista caerulea (Pteromalidae) and Aprostocetus ceroplastae (Eulophidae). The most abundant species was A. ceroplastae, corresponding to 54% of the parasitoids emerged. Coccophagus ceroplastae and M. helvolus represented 19%, whereas S. caerulea comprised 8% of the total. This study is the first published record of C. ceroplastae in Spain and the first record of M. helvolus on C. sinensis in Spain. Concerning the economical thresholds normally used, sampling plans developed for the management of C. sinensis in citrus groves should target population densities of around 12-20% of invaded twigs, equivalent to 0.2-0.5 females per twig. The sample size necessary to achieve the desired integrated pest management precision is 90-160 twigs per grove for the enumerative plan and about 160-245 twigs per grove for the binomial plan.
M.t. Martínez-ferrer - One of the best experts on this subject based on the ideXlab platform.
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Seasonal trends, sampling plans and parasitoid complex of the Chinese wax scale, Ceroplastes sinensis Del Guercio (Hemiptera: Coccidae), in Mediterranean citrus groves.
Bulletin of entomological research, 2014Co-Authors: M.t. Martínez-ferrer, J.m. Campos-rivela, M.j. VerdúAbstract:Seasonal trends and the parasitoid complex of Chinese wax scale (Ceroplastes sinensis) was studied from July 2010 to February 2013. Six commercial citrus groves located in northeastern Spain were sampled fortnightly. Chinese wax scale completed a single annual generation. Egg oviposition started in May and continued until mid-July. Egg hatching began in mid-June, and in the first quarter of August, the maximum percentage of hatched eggs was reached. In the same groves, the parasitoid species of C. sinensis were determined together with their seasonal trends, relative abundance and occurrence on C. sinensis. Four hymenoptera were found parasitizing C. sinensis, mainly on third instars and females: Coccophagus ceroplastae (Aphelinidae), Metaphycus helvolus (Encyrtidae), Scutellista caerulea (Pteromalidae) and Aprostocetus ceroplastae (Eulophidae). The most abundant species was A. ceroplastae, corresponding to 54% of the parasitoids emerged. Coccophagus ceroplastae and M. helvolus represented 19%, whereas S. caerulea comprised 8% of the total. This study is the first published record of C. ceroplastae in Spain and the first record of M. helvolus on C. sinensis in Spain. Concerning the economical thresholds normally used, sampling plans developed for the management of C. sinensis in citrus groves should target population densities of around 12-20% of invaded twigs, equivalent to 0.2-0.5 females per twig. The sample size necessary to achieve the desired integrated pest management precision is 90-160 twigs per grove for the enumerative plan and about 160-245 twigs per grove for the binomial plan.
J.m. Campos-rivela - One of the best experts on this subject based on the ideXlab platform.
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Seasonal trends, sampling plans and parasitoid complex of the Chinese wax scale, Ceroplastes sinensis Del Guercio (Hemiptera: Coccidae), in Mediterranean citrus groves.
Bulletin of entomological research, 2014Co-Authors: M.t. Martínez-ferrer, J.m. Campos-rivela, M.j. VerdúAbstract:Seasonal trends and the parasitoid complex of Chinese wax scale (Ceroplastes sinensis) was studied from July 2010 to February 2013. Six commercial citrus groves located in northeastern Spain were sampled fortnightly. Chinese wax scale completed a single annual generation. Egg oviposition started in May and continued until mid-July. Egg hatching began in mid-June, and in the first quarter of August, the maximum percentage of hatched eggs was reached. In the same groves, the parasitoid species of C. sinensis were determined together with their seasonal trends, relative abundance and occurrence on C. sinensis. Four hymenoptera were found parasitizing C. sinensis, mainly on third instars and females: Coccophagus ceroplastae (Aphelinidae), Metaphycus helvolus (Encyrtidae), Scutellista caerulea (Pteromalidae) and Aprostocetus ceroplastae (Eulophidae). The most abundant species was A. ceroplastae, corresponding to 54% of the parasitoids emerged. Coccophagus ceroplastae and M. helvolus represented 19%, whereas S. caerulea comprised 8% of the total. This study is the first published record of C. ceroplastae in Spain and the first record of M. helvolus on C. sinensis in Spain. Concerning the economical thresholds normally used, sampling plans developed for the management of C. sinensis in citrus groves should target population densities of around 12-20% of invaded twigs, equivalent to 0.2-0.5 females per twig. The sample size necessary to achieve the desired integrated pest management precision is 90-160 twigs per grove for the enumerative plan and about 160-245 twigs per grove for the binomial plan.
Nemmat A. Hussein - One of the best experts on this subject based on the ideXlab platform.
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Notes on the Parasitoids of the Soft Brown Scale, Coccus Hesperidum (Hemiptera: Coccidae) in Egypt
2016Co-Authors: Shaaban Abd-rabou, A. Anafi, Nemmat A. HusseinAbstract:NOTES ON THE PARASITOIDS OF THE SOFT BROWN SCALE, COCCUS HESPERIDUM (HEMIPTERA: COCCIDAE) IN EGYPT. Thirteen species of hymenopterous parasitoid were found in association with Coccus hesperidum at three locations in Egypt: 4 species of Aphelinidae (of which three were recorded for the first time); seven species of Encyrtidae (of which three were recorded for the first time), the first record of a species of Mymaridae, plus a species of Pteromalidae. The relative abundance of these parasitoids is discussed. Key words: survey, rearing methods, percentage parasitism, Coccophagus, Marietta, Diversinervis, Metaphycus, Microterys, Parachthrodryinus, Prochilonerus, Alaptus, Scutellista.
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Notes on the Parasitoids of the Soft Brown Scale, Coccus Hesperidum (Hemiptera: Coccidae) in Egypt
2016Co-Authors: Shaaban Abd-rabou, A. Anafi, Nemmat A. HusseinAbstract:NOTES ON THE PARASITOIDS OF THE SOFT BROWN SCALE, COCCUS HESPERIDUM (HEMIPTERA: COCCIDAE) IN EGYPT. Thirteen species of hymenopterous parasitoid were found in association with Coccus hesperidum at three locations in Egypt: 4 species of Aphelinidae (of which three were recorded for the first time); seven species of Encyrtidae (of which three were recorded for the first time), the first record of a species of Mymaridae, plus a species of Pteromalidae. The relative abundance of these parasitoids is discussed. Key words: survey, rearing methods, percentage parasitism, Coccophagus, Marietta, Diversinervis, Metaphycus, Microterys, Parachthrodryinus, Prochilonerus, Alaptus, Scutellista.
Panagiotis A Eliopoulos - One of the best experts on this subject based on the ideXlab platform.
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Biological and ecological aspects of Chinese wax scale, Ceroplastes sinensis Del Guercio (Hemiptera: Coccidae): a two-year study from Central Greece
Australian Journal of Entomology, 2003Co-Authors: G.j. Stathas, Nickolas G Kavallieratos, Panagiotis A EliopoulosAbstract:Biological and ecological aspects of the scale Ceroplastes sinensis are investigated on citrus in central Greece through regular samplings during 1999-2001 on Citrus sinensis (Sapindales: Rutaceae) in Attiki County. The scale was univoltine. Overwintering stages were the third-instar nymph and the adult female. From the end of May until the end of June the population comprised preovipositing females. Oviposition occurred from mid-June until mid-July and hatching took place during July. First- and second-instar nymphs were recorded from the end of July until the end of August, and from mid-August until the end of September, respectively. Third-instar nymphs appeared at the end of August and were present until the beginning of September. Some of the population of third-instar nymphs reached the adult stage during October and November, whilst the remainder completed development in the following April. Small numbers of male nymphs were recorded during October and November. The mean fecundity of adult females was 3260 ± 770 eggs per female. The most abundant natural enemy of C. sinensis was Scutellista caerulea (Fonscolombe) (Hymenoptera: Pteromalidae), whose eggs, larvae and pupae were found in up to 42% of the total live population of the scale. Two predators, Chilocorus bipustulatus (L.) and Exochomus quadripustulatus (L.) (Coleoptera: Coccinellidae), were also observed.
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Biological and ecological aspects of Chinese wax scale, Ceroplastes sinensis Del Guercio (Hemiptera: Coccidae): a two‐year study from Central Greece
Australian Journal of Entomology, 2003Co-Authors: G.j. Stathas, Nickolas G Kavallieratos, Panagiotis A EliopoulosAbstract:Biological and ecological aspects of the scale Ceroplastes sinensis are investigated on citrus in central Greece through regular samplings during 1999-2001 on Citrus sinensis (Sapindales: Rutaceae) in Attiki County. The scale was univoltine. Overwintering stages were the third-instar nymph and the adult female. From the end of May until the end of June the population comprised preovipositing females. Oviposition occurred from mid-June until mid-July and hatching took place during July. First- and second-instar nymphs were recorded from the end of July until the end of August, and from mid-August until the end of September, respectively. Third-instar nymphs appeared at the end of August and were present until the beginning of September. Some of the population of third-instar nymphs reached the adult stage during October and November, whilst the remainder completed development in the following April. Small numbers of male nymphs were recorded during October and November. The mean fecundity of adult females was 3260 ± 770 eggs per female. The most abundant natural enemy of C. sinensis was Scutellista caerulea (Fonscolombe) (Hymenoptera: Pteromalidae), whose eggs, larvae and pupae were found in up to 42% of the total live population of the scale. Two predators, Chilocorus bipustulatus (L.) and Exochomus quadripustulatus (L.) (Coleoptera: Coccinellidae), were also observed.
