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The Existence of Deuterotokous Reproduction Mode in the T. tabaci (Thysanoptera: Thripidae) Cryptic Species Complex

Wondimagegn Atilaw Woldemelak
Wondimagegn Atilaw Woldemelak
   | 30. Juni 2020
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Online veröffentlicht: 30. Juni 2020
Seitenbereich: 21 - 28
Eingereicht: 01. Dez. 2019
Akzeptiert: 01. Mai 2020
DOI: https://doi.org/10.2478/johr-2020-0011
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© 2020 Wondimagegn Atilaw Woldemelak, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Mother and son inbreeding scheme in T lineage: 10 females were taken from the stock culture and reared them to produce F1 progeny. Then, 30 F1 virgin females were reared to produce son and when the son became an adult; both mother and son were confined in the same tube for 48 h. The male was removed from the tube after 48 h and its mother kept reared on tobacco leaf discs and named as the F1 generation. Since then, F1 female allowed to produce a son to continue the F2 mother and son inbreeding and similar procedures were used with F1 inbreeding line
Mother and son inbreeding scheme in T lineage: 10 females were taken from the stock culture and reared them to produce F1 progeny. Then, 30 F1 virgin females were reared to produce son and when the son became an adult; both mother and son were confined in the same tube for 48 h. The male was removed from the tube after 48 h and its mother kept reared on tobacco leaf discs and named as the F1 generation. Since then, F1 female allowed to produce a son to continue the F2 mother and son inbreeding and similar procedures were used with F1 inbreeding line

Fig. 2

(A) Indicated that the first instar larvae and the numbers are used to indicate the pairs of setae on the pronotum; (B) Indicated that the second instar larvae and the numbers are used to indicate the pair of setae on the pronotum
(A) Indicated that the first instar larvae and the numbers are used to indicate the pairs of setae on the pronotum; (B) Indicated that the second instar larvae and the numbers are used to indicate the pair of setae on the pronotum

Fig. 3

(C) Indicated that the first instar larvae and the numbers are used to indicate the pairs of setae on the ventral part of the abdomen; (D) Indicated that the second instar larvae and the numbers are used to indicate the pair of setae on the ventral part of the abdomen
(C) Indicated that the first instar larvae and the numbers are used to indicate the pairs of setae on the ventral part of the abdomen; (D) Indicated that the second instar larvae and the numbers are used to indicate the pair of setae on the ventral part of the abdomen

Fig. 4

First instar male. The numbers are used to indicate the pairs of setae on both dorsal and ventral abdominal segment IX
First instar male. The numbers are used to indicate the pairs of setae on both dorsal and ventral abdominal segment IX

Fig. 5

Second instar male. The numbers are used to indicate the pairs of setae on both dorsal and ventral abdominal segment IX
Second instar male. The numbers are used to indicate the pairs of setae on both dorsal and ventral abdominal segment IX

A sex ratio of progeny that were produced by deuterotoky virgin female for three consecutive generation

GenerationNo. of deuterotoky femaleNo. of progeny from deuterotoky femaleReproductive mode
MaleFemale
F0Da158Deuterotokous
F1Db1/8410Deuterotokous
F2Dc1/8662Deuterotokous
F3Dd2720Arrhenotokous

The sex of progeny produced from virgin L1 and T type females that were exposed to male adult at pupal stage

LineagesFirst instar maleSecond instar malePupae progenyAdult male progenyTotal male
L11879566118466
T25212122127522

The existence of deuterotokous mode of reproduction from F2 mother and son inbreeding

GenerationNo. of inbred femaleMaleFemaleReproduction modeDeuterotoky mother
F130✓Arrhenotoky0
F217✓✓Deuterotoky1/17
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Sprache:
Englisch
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