Reproductive biology of the European Cuckoo Cuculus canorus: early insights, persistent errors and the acquisition of knowledge

The hermaphrodite duct of pulmonate snails connects the ovotestis to the fertilization pouch. The duct is typically divided into three zones; aproximal duct which leaves the ovotestis, the middle duct (seminal vesicle) and the distal ovotestis duct. The seminal vesicle forms the major portion of the duct and is thought to store sperm prior to copulation. In addition the duct may also play a role in sperm maturation and degredation. Although the structure of the seminal vesicle has been described for a number of snails at the light microscope level there appear to be only two descriptions of the ultrastructure of this tissue. Clearly if the role of the hermaphrodite duct in the reproductive biology of pulmonatesis to be understood, knowledge of its fine structure is required.Hermaphrodite ducts, both containing and lacking sperm, of species of the terrestrial pulmonate genera Sphincterochila, Levantina, and Helix and the marine pulmonate genus Siphonaria were prepared for transmission electron microscopy by standard techniques.

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SGI: A quarter century devoted to excellence in research in reproductive biology

Journal of the Society for Gynecologic Investigation ◽

10.1016/s1071-5576(97)00017-8 ◽

1997 ◽

Vol 4 (2) ◽

pp. 110-110

Author(s):

R LOBO

Keyword(s):

Reproductive Biology ◽

Quarter Century

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Morphology, classification, and reproductive biology ofVigna unguiculata (L.) Walpers (Papilionaceae) in Nigeria

Feddes Repertorium ◽

10.1002/fedr.4911000308 ◽

1989 ◽

Vol 100 (3-4) ◽

pp. 137-145

Author(s):

R. E. Ugborogho ◽

C. O. Agomo

Keyword(s):

Reproductive Biology

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Cuckoo chicks evicting their nest mates: coincidental observations by Edward Jenner in England and Antoine Joseph Lottinger in France

Archives of Natural History ◽

10.3366/anh.2011.0030 ◽

2011 ◽

Vol 38 (2) ◽

pp. 220-228 ◽

Cited By ~ 3

Author(s):

Spencer G. Sealy ◽

Mélanie F. Guigueno

Keyword(s):

Royal Society ◽

Cuculus Canorus ◽

Common Cuckoo ◽

Cuckoo Chick ◽

The Common ◽

Made In ◽

Royal Society Of London

For centuries, naturalists were aware that soon after hatching the common cuckoo (Cuculus canorus) chick became the sole occupant of the fosterer's nest. Most naturalists thought the adult cuckoo returned to the nest and removed or ate the fosterer's eggs and young, or the cuckoo chick crowded its nest mates out of the nest. Edward Jenner published the first description of cuckoo chicks evicting eggs and young over the side of the nest. Jenner's observations, made in England in 1786 and 1787, were published by the Royal Society of London in 1788. Four years before Jenner's observations, in 1782, Antoine Joseph Lottinger recorded eviction behaviour in France and published his observations in Histoire du coucou d'Europe, in 1795. The importance of Lottinger's and Jenner's observations is considered together.

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