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The adhesive strength of the palettes of males of a boreal water beetle, Dytiscus alaskanus J. Balfour Browne (Coleoptera: Dytiscidae)
 

Summary: The adhesive strength of the palettes of males of a boreal water beetle,
Dytiscus alaskanus J. Balfour Browne (Coleoptera: Dytiscidae)
R. B. AIKENAND A. KHAN
Department of Biology, Mount Allison University, Sackville, N.B., Canada EOA 3C0
Received September 30, 1991
Accepted January 27, 1992
AIKEN,R. B., and KHAN,A. 1992. The adhesive strength of the palettes of males of a boreal water beetle, Dytiscus alaskanus
J. Balfour Browne (Coleoptera: Dytiscidae). Can. J. Zool. 70: 1321- 1324.
The adhesive strength of specialized setae on the palettes of male Dytiscus alaskanus was investigated by recording the
mass that palettes were able to lift. Large primary and secondary adhesive setae were removed and the adhesive strength
of the palette was tested. The primary and secondary adhesive setae accounted for 59.5% of the adhesive strength of the
palette. The ability of the palette to hold nearly 4 times the mass of a female may be needed to overcome the force generated
by an accelerating female.
AIKEN,R. B., et KHAN,A. 1992. The adhesive strength of the palettes of males of a boreal water beetle, Dytiscus alaskanus
J. Balfour Browne (Coleoptera: Dytiscidae). Can. J. Zool. 70 : 1321- 1324.
La force d'accrochage de soies spCcialisCes sur les palettes du male de Dytiscus alaskanus a CtC CvaluCe par mesure des
masses que peuvent soulever les palettes. Les grosses soies adhCsives primaires et secondaires ont CtC enlevCes et la force
d'accrochage des palettes a CtC mesurCe. Les soies adhCsives primaires et secondaires assurent 59,5% de la force d'accrochage
de la palette. La capacitC des palettes de retenir prks de 4 fois la masse d'une femelle a peut-6tre pour but de contrer la force
engendrCe par une femelle en accC1Cration.

  

Source: Aiken, Ron - Biology Department, Mount Allison University

 

Collections: Biology and Medicine