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osu1341894153.pdf (9.88 MB)
ETD Abstract Container
Abstract Header
Advances in Taxonomy and Systematics of Platygastroidea (Hymenoptera)
Author Info
Taekul, Charuwat
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=osu1341894153
Abstract Details
Year and Degree
2012, Doctor of Philosophy, Ohio State University, Evolution, Ecology and Organismal Biology.
Abstract
Wasps, Ants, Bees, and Sawflies one of the most familiar and important insects, are scientifically categorized in the order Hymenoptera. Parasitoid Hymenoptera display some of the most advanced biology of the order. Platygastroidea, one of the significant groups of parasitoid wasps, attacks host eggs more than 7 insect orders. Despite its success and importance, an understanding of this group is still unclear. I present here the world systematic revisions of two genera in Platygastroidea:
Platyscelio
Kieffer and
Oxyteleia
Kieffer, as well as introduce the first comprehensive molecular study of the most important subfamily in platygastroids as biological control benefit, Telenominae. For the systematic study of two Old World genera, I address the taxonomic history of the genus, identification key to species, as well as review the existing concepts and propose descriptive new species. Four new species of
Platyscelio
are discovered from South Africa, Western Australia, Botswana and Zimbabwe. Four species are considered to be junior synonyms of
P.
pulchricornis.
From nine valid species of
Oxyteleia
, the new species are discovered throughout Indo-Malayan and Australasian regions in total of twenty-seven species. The genus
Merriwa
Dodd, 1920 is considered to be a new synonym. To better understanding of the relationships of subfamily Telenominae, I reconstruct the phylogeny based on approximately 3.7 kb of DNA sequence from 4 molecular markers (18S, 28S, COI and EF1-¿¿¿¿) expanding 80 terminals: 6 genera (11 species groups), 5 broad-ranged out group genera. Results are drawn from both parsimony and statistical analyses (Bayesian and Maximum likelihood), and from 6 character coding and partitioning schemes. The molecular evidence showed that the subfamily is not monophyletic: one clade, the
Psix
group of genera, forms a monophyletic group with species of the tribe Gryonini, subfamily Scelioninae. Monophyletic clades were recovered with strong support including (
Psix
+
Paratelenomus
) and
Gryon
; Telenominae, s.str. (without
Gryon
and
Psix
group of genera);
Phanuromyia
and
Telenomus crassiclava
species group;
Telenomus laricis
species group; and
Telenomus longicornis
species group. The genera
Eumicrosoma
and
Platytelenomus
are nested within
Telenomus californicus
species complex. Pentatomoidea (Hemiptera) is the plesiomorphic host. The species in the clade
Phanuromyia
+
Telenomus crassiclava
species group all shared the same host group, Auchenorrhyncha (Hemiptera: Fulgoridae and Flatidae). The monophyly of the major genera
Telenomus
and
Trissolcus
is not supported; the interrelationships of their component species are largely unresolved.
Committee
Norman Johnson, Prof (Advisor)
Johannes Klompen, PhD (Committee Member)
John Freudenstein, PhD (Committee Member)
Marymegan Daly, PhD (Committee Member)
Pages
270 p.
Subject Headings
Biology
;
Entomology
Keywords
Platygastroidea
;
Platygastridae
;
Scelionidae
;
Hymenoptera
;
host finding
;
egg-parasitoid
;
Trissolcus
;
Eumicrosoma
;
Aholcus
;
Platytelenomus
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
Taekul, C. (2012).
Advances in Taxonomy and Systematics of Platygastroidea (Hymenoptera)
[Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1341894153
APA Style (7th edition)
Taekul, Charuwat.
Advances in Taxonomy and Systematics of Platygastroidea (Hymenoptera).
2012. Ohio State University, Doctoral dissertation.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=osu1341894153.
MLA Style (8th edition)
Taekul, Charuwat. "Advances in Taxonomy and Systematics of Platygastroidea (Hymenoptera)." Doctoral dissertation, Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1341894153
Chicago Manual of Style (17th edition)
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Document number:
osu1341894153
Download Count:
1,403
Copyright Info
© 2012, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.