Publication: Metaphase chromosomes of parasitic wasp, Diachasmimorpha longicaudata (Hymenoptera: Braconidae) in Thailand
Issued Date
1999-01-01
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ISSN
00114545
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2-s2.0-0032945281
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Mahidol University
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SCOPUS
Bibliographic Citation
Cytologia. Vol.64, No.1 (1999), 111-115
Suggested Citation
Sangvorn Kitthawee, Siripong Singhapong, Visut Baimai Metaphase chromosomes of parasitic wasp, Diachasmimorpha longicaudata (Hymenoptera: Braconidae) in Thailand. Cytologia. Vol.64, No.1 (1999), 111-115. doi:10.1508/cytologia.64.111 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/25293
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Title
Metaphase chromosomes of parasitic wasp, Diachasmimorpha longicaudata (Hymenoptera: Braconidae) in Thailand
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Abstract
Diachasmimorpha longicaudata (Hymenoptera: Braconidae) is a larval endoparasitoid of the fruit fly, Bactrocera correcta (Diptera: Tephritidae) that is important in biological control. We have analysed the metaphase chromosomes of this parasitoid using simple air-drying and squashed air-drying techniques. We examined the karyotypes of reproductive organs of pre-emerged adults and the cerebral ganglia of prepupae. Both show that females are diploid with a chromosome number of (2n)=40, whereas males are haploid with chromosome number of (n)=20. The haploid metaphase karyotype of D. longicaudata comprises 5 metacentric, 13 submetacentric and 2 subtelocentric chromosomes. We could not distinguish the sex chromosomes. These findings are the first record of the metaphase karyotype of this endoparasitoid.