Precopulatory mate assessment in relation to body size in the earthworm Lumbricus terrestris: avoidance of dangerous liaisons?
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چکیده
منابع مشابه
Ceramide glycanase from the earthworm, Lumbricus terrestris.
Ceramide glycanase (CGase) is an enzyme that cleaves the linkage between the sugar chain and the ceramide. To make this enzyme readily available, we have developed a simple method for preparing it from the earthworm, Lumbricus terrestris. The method involves Bio-Gel A-0.5m, octyl-Sepharose and p-aminophenylthiogalactoside-agarose column chromatography. By gel filtration, the molecular mass of e...
متن کاملOntogenetic scaling of burrowing forces in the earthworm Lumbricus terrestris.
In hydrostatic skeletons, it is the internal fluid under pressure surrounded by a body wall in tension (rather than a rigid lever) that enables the stiffening of the organism, the antagonism of muscles and the transmission of force from the muscles to the environment. This study examined the ontogenetic effects of body size on force production by an organism supported with a hydrostatic skeleto...
متن کاملScaling of the hydrostatic skeleton in the earthworm Lumbricus terrestris.
The structural and functional consequences of changes in size or scale have been well studied in animals with rigid skeletons, but relatively little is known about scale effects in animals with hydrostatic skeletons. We used glycol methacrylate histology and microscopy to examine the scaling of mechanically important morphological features of the earthworm Lumbricus terrestris over an ontogenet...
متن کاملThe fine structure of obliquely striated body wall muscles in the earthworm, Lumbricus terrestris Linn.
The fine structure of obliquely striated muscle fibres from the body wall of the earthworm has been investigated. Certain details of the structure have been confirmed by cutting serial sections. The fibres contain both thick and thin myofilaments. The latter are attached to Zmatenal and the 2 types of myofilament are arranged in interdigitating arrays to give rise to Aand I-bands and an H-zone ...
متن کاملThe contractile mechanism in obliquely striated body wall muscle of the earthworm, Lumbricus terrestris.
Obliquely striated muscle fibres from the longitudinal and circular layers of the body wall of the earthworm were prepared in extended and contracted states for study in the electron microscope. Contracted fibres differ from extended ones in the following respects: (i) the I-bands are narrower, (ii) the A-bands are wider, and (iii) there are more rows of thick myofilaments in each A-band. The a...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2001
ISSN: 1465-7279
DOI: 10.1093/beheco/12.5.612