144 TecbBull．Kagawa Agr‖ Coll
互NVEST王GAT10NS ON THE PARASITIC ACTIVITIES
OF APANTELES GIJOMERATUS
II・On the parasitic ac七ivities of A夕anieles gわmeratus at thelow・1ying1andof Kagawa Prefecture．ヰ
HiroshiMATSUZAWA，Y缶Z6MIYAMOTO，HidetoshiOKAMOTO （Laboratory of Applied Entomology）
（Received September’13，1955・Accepted October26，i955．）
INTROI）UCT‡ON
Generally，tWOPeaks ofparasitic activitiesofApanteleFg10merOt椚againstPieYisra9aecrueivora aIe Seen
in sp血g and autumnin ayear atSouth−WesternJapanTheremarkablecaseaboutitis seeninMiyazkai
り
and some other pIefecturesBut onlyonepeakofactivitiylS Seeninsprlngatthelow−1yinglandofKagawa
l，2）
Prefectureinspiteofthelargenumberof hostsin autumn As we tookinterestin this fact we tried some Cねsuses on the realstate of this，Startinglast year（1954）Describingin this paper the outline of the result we obtained，We Want tO make some discussions aboutit
RESIJLTS AND DISCUSS‡0別S
l）Seasonalprevalence of PieYiS r（ゆae cYuCivo
There are two remaIkable appearances of Pieris rabae〃ucivorain spring andin autumnin a yearin
Kagawa Prefecture anditis very simi1ar・tO Southern K押S旭Itis shownin Figユ But disappearance of merisタ・abaecYuCivorain sum・ meIis verylate andirregularin comparison with that of SouthernKydsh（i，andaccordingly theeggsorlarvae can be found o11t Very Often in mid−Summer．This factin Kagawa Pre− fectureis a very noticeable thing and ou工at ten十ion foItheinvestigation of the ecoioglCal Phenomena must bedirectedtothisatanyrate， becauseitis supposed that the relationofthis
SpeCies o壬 butterflies toits enemies or the
Climatic conditions may be ver・y SpeCialinKa− g？Wa Prefecture，eSPeCia11y at the 王ow・lylng
land
It seems to us that the activities ofApan
″﹁ヒ L P
ZUM胃R笥≡望く声
lll州IV V V＝川V…は X X＝川
MON丁目S
Figl Seasonalprevalence of PYa♪aecYuCivora at Mikich6，Kagawa（1954−1955）
E：Egg stage，L：Larvalstage P：Pupalstage telesglomeYaiusin early summer are suspended
in aninsu伍cient state tillthe end ofJune or the beginningofJulyandonlytheactivitiesofPolistesWaSpS CanbeseenafterthatAccordingLy，the activities ofAbantelesglomeratusinlate spring orin early summer do not seem to be so grear
ヰContributions fromtheLaboratory ofAppliedEntomology，KagawaAgziculttlralCollege，Noll
OLIVE 香川大学学術情報リポジトリ
Volフ，No∴2（1956） 145 The activities oL zbhsies waspsillthe重eld ar・e COnSidelabl．y weuin sprlng Oli111ate sl）Ilng，1）ut nOt noticeablein ear・1y summe工0Iin mid−SummeIMost ofthe eggs orlarvae of Pieris？aPae crucivora which
are fopnd outin summ甲CannOt develop to pupae or adultsin natuIalcondition Consequently，the disap・ peaIarLCe OfPieYi・S Ya9aecrucivoracan be seeninmid orlate s11mmeIalthot喝hitjs not solongHowever， itis not due to the e庁ect ot Polistes wasp only，but to the e茸ect of the climatic and food conditions Appearance of PieYilS r（ゆaecYuCivorain autumn beginsin Septemberin general，butitis not so muchlike that of Southern Ky江Sh缶
2）Activities of．4♪α〃fβ／βSgわ研β㌢αf〝S
W6dealtwiththe seasonalprevalenceof pieris rq？ae crucivora at thelow−1yinglandofKagawaPre・ fecture and pointed out somel町pOrtant pOints concemng theIelation of this species of butteray toits
enemiesintheabovedescriptions′ Now，WearegOingtodescribetheoutlineoftheactivitieso董Abanieles glomeratus at this districtalthough
the result ofourIeSearChis shown
inFig2Firstofall，theactivities in sprlng muSt be dealt with
At thelow−1yingiand ofKaga− Wa Prefecture，thebeginnlngOfac− tivities o王A♪α油わ15gわ〝好7・めSip Springis much related with Fig2 and so most of thehostsin the first generation arenotpa羊・aSitized The gradualincreasein number of the paIaSitesdependsuponthehost Of the＄早COnd or third generation， b11t aCtually t‡1e‡、声is not so、muCh appea亨anCe Of cabbage wormSin this districtMoreoveI，there are
菅︺E OF浮雲SヨSMボ
l∴＝llトlV V VlVllVl‖ ＝く）く）‖ Xll
M O N T H SFig2Rate of paIaSitism of Ah glomeratusagainst PTaPae
crucivora through out a yeaIat Takamatsu andIkenobe
（Mikich引，Kagawa′ノ（1955）remarkablegaps among the activities ofparasites and thegenerationpIOgreSSionofthe hostlThese two
factsare very noticeable for the consideration of activities of this waspin spring at this district and the result of Fig2must be considered as the ground foritEspeciallyit seems that the bio】ogicalgaps among the host and parasites may bring the stop of activitiesin early summer too early，COmbined with thelongevity of this parasitesh Accordingly，it must be considered also that these things may have a StrOnge庁ect on the non・aCtivities of Apantelesglomeratusin autumn
As previously describedin this paper，theIeis a disappea【anCe Of Pieris ra？ae cru（ivorain summer at this districtOf course，the activities of Apanielesg10meratuSin this season cannot be seen，buttheymust naturallybeseeninautumnHowever，the activities of this parasitesin autumn cannot be seen at a111ike Fig 2TheIefore，it must be consideTed that there areindeed no parasite wasps sincesummerinthelow lyingland oE Kagawa Prefecture，althougha very slight activities aIe found at rakamatsudistrictin some
year
In other work connected with this，it was found out that the activities of Ai，anieles glomeratus are continued from sprlngtO autumnwithout a breakin the mountainous district of Kagawa Prefecture which
is shownin Fig3Accordingly，itis suppose卓that the parasites，A♪anieねs glo7WatuS，COme down spnng from the mountainous district to thelow−1yingland，but，in autumn they cannot reach there even
if they try to come，andit has been found otlt nOW afterthese practicalcensuses that this presumption as mentioned aboveis very reliable．
146 Te℃bBull王（agawa AgI＼Coll Lastly，We Wan土to describea Iittle about the disappeaIanCe Of
A加7ガfeJβ∫gわ，彫′〃J〝ゞin summer at
thelow・1yingland oiKagawait is veryinteresting that they dis・ SappeaIfrom the重eldin summer in Kagawain spite of the exis・ t声nCein summerinSouthernKy缶− S王滝． We can not believe that the parasite wasp，Aba7deh？S glo・ 1neraius may go up to the moun・ tainous districtin summer，butit is supposed that they may dieiil
this season小
ConceIning this，SOme factors Can be pointed out as follows： エ）BiologicalinteトIelationsofthe
parasitites to their hosts 2）Climaticfactors，SpeCiallythe
influencesofthetempeIature＋ 3）Places ofliving or ciICum
StaIICeS，
4）Artificiale＃ects，eSpeCiallythe effects ofinsecticides
These fムctors are veryim・ poItant and none of theぬ Can be lgnOred‖ Accordingly，it seems a Very nAturaland truthfulcognl tionthatwerecognizetheaboveas a wholeItis not clear whether
theparasite，AbanteleSglomeraiu．sin Kagawais a characteristiclocal Strain ornotWe are studyingits physiologicalcharacter
■汀汀・・・・＝・ THE LOWESTBORDER（ABOUTlOOMEV）
Fig．3小 Showing a part of Kagawa Prefecturein which the
lowestbordersofthe place ofliving of A∴glomeraius
throughout every season aIe Shown
R る s u m畠
In ordertoknow the realstateofthe parasitic activities of4i・anteles glomeT・atusagainst Pi’eris r郎ae
CruCivora at thelow−1yingland of KagawaPrefecture，thisresearch（1954T1955）was carriedoutandacquired
the resultsin Figl−31Some considerations and discussions concernlng these results were madein this
paper and especially we dealt with the disappearance of theseparasitesfrom summertoautumn．Itseemstousthattheparasites，ApanteleSglomeraius atthelow−1yingland of KagawaPェefecturein spring andin early summer come down from the motlntainous district（OVer10C）m EⅤ〉every yeaI＼Butitis not
presumable that they go up to the mountainous districtin summer。Perhaps they may diein this season
♯Daily maximum temperaturein summer at thelow・・1yingland of Kagawais vezLy highandit reaches
3120−31∴フOC，and this high tempeIature GOrItin粥S fq！・卑long time eve工y dayillthe afternoon
OLIVE 香川大学学術情報リポジトリ
14フ
Vol．7，No‖2（ユ956）
Moreover，itis supposed thatin autumn they aIe nOt at a王亘seen at the王0Ⅵ−1yingぬnd，beca11Setheycannot
get theIe eVenif they come down from the mountainous district
LIT王弓RATURE C‡TED
l）MATSUZAWA，Hl：BionomicalNotesonAbdniejbs 2）MrYAMOTO，Y∧，SIMA王）A，Y：Transition of
gわ研eraius・・Tech・Bull・Kagawa Agr Coll7（l）， aCtivity aIeaOfAbaniele・SglomeratuSinautumn
Presented before the Annual Meeting of the Nippon Society ofAppl・Ent（1954）
60（1955）． アオムシコマユノヾチの寄生活動に関する研究 Ⅱ 香川県嘩他におけるアオムレコマユバチの寄生蒔動
