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Studies on wild bees visiting alfalfa flowers in the Tokachi district

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Studies on wild bees visiting alfalfa flowers in the Tokachi district

その他(別言語等)

のタイトル

十勝地方におけるアルファルファ訪花性ハナバチ類 に関する研究

著者(英) Usui Masayuki, Nishijima Yutaka journal or

publication title

Research bulletin of Obihiro Zootechnical University. Series I

volume 11

number 1

page range 123‑132

year 1978‑10‑31

URL http://id.nii.ac.jp/1588/00002266/

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R e s .  B l l l l .   O b i h i r o  U n i v . ,  11  ( 1 978): 123‑132. 

S t u d i e s  o n  w i l d  b e e s  v i s i t i n g   a l f a l f a   f l o w e r s   i n   t h e  T o k a c h i  d i s t r i c t

Masayuki USUI and Yutaka .NISH l ] l MA  ( L a b o r a t o r y   0 1   E n t o

o l o g y , O b i h i r o  U n i v e r s i t y .  

O b i h i r o ,  H o k k a i d o ,  J a p a n )   R e c e i v e d  May 3 0 ,  1 9 7 8  

十勝地方におげるアノレ 7 7 レ ノ 7 7 訪花性ノ、ナパチ

1

類 に 関 す る 研 究

碓 井 正 行 料 ・ 西 島 浩柿

Introduction 

1 2 3  

The c u 1 t i v a t e d  v a r i e t i e s  and s t r a i n s  o f  a l f a l f a  a r e  u s u a l l y   s e l f ‑ s t e r i l e  and  l e s s   c a p a b l e   o f  a u t o m a t i c  t r i p p i n g ,  and  50  t h e i r   s e e d  y i e l d  d e p e n d s   on t h e   a c t i v i t y   o f   p o l l i n a t i n g '  b e e s .   The r e l a t i v e  i m p o r t a n c e  o f  honey and w i 1 d b e e s   d i 旺 e r s g r e a t l y   among d i f f e r e n t   l o c a l i t i e s .   I n  g e n e r a l ,  t h e r e  a r e  a  g r e a t  number o f  honey b e e s  on a l f a l f a畳 owers predomInan t 1 y ,  and  most o f  t h e  v i s i t i n g  honey b e e s  a r e  n e c t a r ‑ g a t h e r e r s  which do n o t  t r i p   t h e   f l o w e r s .   i n   t h e   c o o l e r  and humid a r e a s   (BOHART ,  1 9 5 7 ;  FREE ,  1 9 7 0 ;  MCGREGOR ,  1 9 7 6 ) .   In c o n t r a s t  most  s p e c i e s  o f  w i l d  b e e s   p o l l i n a t e   a l f a l f a   much more  e 伍 c i e n t l y t h a n   n e c t a r ‑ g a t h e r i n g   h o r i e y   b e e s  and somewhat more e f f i c i e n t l y 出 血 p o l l e 時 a t h e r i n ghoney b e e s  (BOHART ,  1 9 5 8 )  

Many s t u d i e s  on t h e  r e l a t i o n s h i p s  between v a r i o u s  f l o w e r s  and w i l d   b e e s   have  been  done i n  HoH 坦 i d o . These a r e  m a i n l y  d i v i d e d  i n t o  s u b j e c t s ,  namely ( 1 )   s u r v e y s  u n d e r t a k e n   f o r  t h e  p u r p o s e  o f  comparing w i t h   l o c a l   b e e   f a u n a   (SAKAGAMI  and  MATSUMURA ,  1 9 6 . 7 " ;   MATSUMURA and MUNAKATA ,  1 9 6 9 ;  SAKAGAMI and F 四日lD A , 1 9 7 2 ;  1 9 7 3 ;  SAKAGAMI e t  a l . ,  1 9 7 4 ;  USUI e t  a l . ,  1 9 7 6 ) ,  and ( 2 )   s t u d i e s  on t h e   p o l l i n a t i o n   o f   r e d   c ¥ o v e r   (YAM 血 I A and  EBARA ,  1 9 5 2 ;  MURAKAMI e t  a l . ,  1 9 5 7 ;  MURAKAMI ,  1 9 6 4 ) .   As a b e e   p o l l i n a t o r  o f  a l f a l f a ,  MAIITA e t  a l .   ( 1 9 7 3 )   i n t r o d u c e d  t h e  l e a f . c u t t i n g   b e e ,  Megachile  r o t u n d a t a ,  i n t o   Ho 地 a i d o from t h e  U. S .  A . .   However ,  no s t u d y   h a s   been  u n d e r t a k e n   on t h e   w i l d   b e e s   v i s i t i n g   a l f a l f a  i n  H o k k a i d o .   The p u r p o s e   o f   t h e   p r e s e n t   s t u d y   i s   t h e r e f o r e   t o   c I a r i f y   t h e   bee  f a u n a  and f i n d   some e 旺 " e c t i v epo l 1 i n a t o r s  on a l f a l f a .  

The p r e s e n t  p a p e r   d e s c r i b e s   some  b a s i c   i n f o r m a t i o n   on b e e   f a u n a   s u r v e y e d   a t   an  a l f a l f a  p l o t  d u r i n g  t h e  f l o w e r i n g  s e a s o n s  from 1 9 7 5  t o   1 9 7 7  i n  O b i h i r o  s i t u a t e d   i n   E a s t e r n   Hokkaido 

C o n t r i b u t i o nN o .  86 Irom t h e  L a b o r a t o r y   0 1   E n t o m o l o g y ,  O b i h i r o  U n i v e r s i t y   掛帯広畜産大学昆虫学教室

‑123 

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