S e x m a turity a nd m a ting ha b its of H e licove rp a a rm ige ra (Hubne r)

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1998, 21 (2): 42 46 J ou rna l of N anj ing A g ricu ltu ra l U n iversity 3 α (, 210095), : (1), 0 1, ; ; 2 3, 4 (2),,, 4, 5, 6, 7 8 (3) 3, 1,, 4 (4), 10 0, 90%, 2.

1 1998, 21 (2): J ou rna l of N anj ing A g ricu ltu ra l U n iversity 3 α (, ), : (1), 0 1, ; ; 2 3, 4 (2),,, 4, 5, 6, 7 8 (3) 3, 1,, 4 (4), 10 0, 90%, 2. 4, , 2 d, ; ; ; ; S S e x m a turity a nd m a ting ha b its of H e licove rp a a rm ige ra (Hubne r) L i Guoqing, Chen Changkun, H an Zhao jun and W ang Y inchang (Key L ab of M on ito ring and M anagem en t of P lan t D iseases and In sects, M in istry of A gricu ltu re, N an jing A gric U n iv, N an jing ) ABSTRACT Rep roductive system s of the co tton bo llwom, H. arm ig era w ere dissected, and bioassay w as carried out in labo rato ry. It w as found that m ale accessary gland, dup lex, and p rim ary simp lex lengthened rap idly from nigh t 0 (the night of em ergence) to night 1 and incresed steadily from then on. Testis contracted gradually w ith the lap se of tim e, im 2 p lying the m aturity of m ale rep roductive system w as on nigh t 2 o r 3. A ll the 12day2o ld fem ales carried m ature eggs and the p re2rep roductive period w as from 0. 7 to 1. 7 day. Rate of ovipo siting fem ales and egg2depo sition kep t increasing until nigh t 7. The successful m ating of m ale started on nigh t 2 w ith m ating rate being 5. 6%, w h ile that of fem ale on nigh t 1 w ith m ating rate 16. 2%. Bo th peaked on nigh t 4. M o st 52 and 62day2o ld fem ales exh ibited unrecep tive behavio r to m at2 ing attemp ts of m ales, perhap s they carried too m any eggs and w ere very busy to ovipo siṫ N early 90% fem ales in group s including 10 pairs of 02day2o ld mo th s m ated successfully and each fem ale received an average num ber of sperm atopho re of 2. 4 th rough their lifetim es, m uch significantly mo re than tho se in group s com bined w ith 10 pairs of 02day2o ld m ales and 22day2o ld fem aleṡ Key words H elicoverp a arm ig era; mo th; sex m aturity; m ating; peak period α 3 :

2 2 : 43 (H elicoverp a a rm ig era),, Topper [1 ],,, 6, [2 ] :, [3 ] ;,,Bartlett [4 ] A rm es [5 ] [6 ] ; [7 ],,,,, (L C ) (XJ ) 26 28, 75% 80%, ( ) N 1J 1A rm es [5 ] [6 ] 100 ggl, 3, 20 cm 15 cm 15 cm 24 h, 2 d,, ( 0 ), 9 cm 11 cm, 100 ggl, 2 d (1),, 24 h ; (2),,, ; (3), ; (4) 10, 20 cm 15 cm 15 cm,, x θ t0. 05 SD 2 211, 0 1,, ( 1)

3 44 21 gd M o th age 1 (LC ) Table 1 Growth of male reproductive system of the cotton bollworm (LC stra in) N um ber gcm A ccessary gland gcm D up lex gcm P rim ary simp lex gmm 3 T estis , 3 4 h, 5 h 50%, 9 11 h 71%, 24 h 100% 24 h 9 11 h 1, 48 h, 1, 24 h, 017 d, 117 d, 1 10%, 2 50%, 3 90%, %, 1, 2 3, 4, 5 6, 7 8 ( 2) 2 Table 2 Reproductive character istics of female moths in the cotton bollworm (L C) L iaocheng population (XJ ) X injiang population N o. of mo th tested gd P re2rep roduction (% ) 1 12day2o ld R ate of 2 22day2o ld mo th s 3 32day2o ld laying 4 42day2o ld eggs 5 52day2o ld day2o ld Egg N o. 2 22day2o ld layed 3 32day2o ld per day 4 42day2o ld day2o ld day2o ld day2o ld day2o ld ,, 3 1 0, ; 2 4, ; 5, 2 3, 4

4 2 : 45 M ale age 3 (LC ) Table 3 Rate of successfully mated males with mature females (LC stra in) N o. of mo th s tested N o. of mo th s m ated (% ) R ate of m ated m ale 1 12day2o ld day2o ld day2o ld day2o ld day2o ld : ,, 3 3 3, and 3 show 3 ed sign ifican t (U > 1. 96) and m uch sign ifican t (U > 2. 58) difference. T he sam e as in T able 4 and ,, 1, 4 ( 4), 5 6, 7, Fem ale age 43 (LC ) Table 4 Rate of successfully mated females with mature males (LC stra in) (% ) N o. of mo th s tested N o. of mo th s m atedr ate of m ated fem ale 1 12day2o ld b 2 22day2o ld a day2o ld day2o ld day2o ld day2o ld day2o ld > 7 > 72day o ld : a b N + 0 N U N 5 T he U 2values of a and b line are the comparison of m ated rate of n2day2o ld to n+ 02day2o ld and 52day2 o ld fem ales , ,, 2140, 0174, ; 89%, 59% ; 5, 2 3, 3, 1 ( 5),

5 (LC ) Table 5 Compar ison of mated rate and rece ived spermatophores of females in differen t ages when pa ired with 0-day-old males (LC stra in) (% ) R ate of fem ale received different num bers of sperm atopho re R eceived sperm atopho res 02day2o ld m ale 22day2o ld fem ale02day2o ld m ale 02day2o ld fem ale Co lvin [7 ], 3 5, 8713% 1217% 5 5, 5 6,, 4 d [7 ],,, Co lvin,,,,,,,,,,,, 1 Topper C P. N octurnal behavio r of adults of H elioth is arm ig era (L ep idop tera: N octuidae) in the Sudan Gezira and pest contro l imp licationṡ Bull Entomo l R es, 1987, 77: T eak le R E. L abo rato ry culture of H elioth is species and identification of disease. In: Zaluck im P ed. H elioth is: research m ethods and p ro spects. N ew Yo rk: Sp ringer, B rook s W M. T ransovario l transm ission of N oesem a helioth id is in the co rn earw o rm, H elioth is z ea. J Invertebr Patho l, 1968, 11: Bartlett A C. Guide2lines fo r genetic diversity in labo rato ry co lony establishm ent and m aintenance. In Singh P, M oo re R F edṡ H andbook of insect rearing. V o l 1. N ew Yo rk: E lsevier, A rm es N J, Bond G S, Coo ter R J. T he labo rato ry culture and developm ent of H elicoverp a arm ig era. N R IBulletin, 1992, 57: ,,, 1 1, 1996, 19 ( ): Co lvin J, Coo ter R J, Patel S. L abo rato ry m ating behavio r and compatibility of H elicoverp a arm ig era (L ep idop tera: N octuidae) o riginating from different geograph ical regionṡ J Econ Entomo l, 1994, 87 (6): ()

EKOLOGIE EN SYSTEMATIEK. T h is p a p e r n o t to be c i t e d w ith o u t p r i o r r e f e r e n c e to th e a u th o r. PRIMARY PRODUCTIVITY.

EKOLOGIE EN SYSTEMATIEK. T h is p a p e r n o t to be c i t e d w ith o u t p r i o r r e f e r e n c e to th e a u th o r. PRIMARY PRODUCTIVITY. EKOLOGIE EN SYSTEMATIEK Ç.I.P.S. MATHEMATICAL MODEL OF THE POLLUTION IN NORT H SEA. TECHNICAL REPORT 1971/O : B i o l. I T h is p a p e r n o t to be c i t e d w ith o u t p r i o r r e f e r e n c e to