claspers


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claspers

(ˈklɑːspəz)
pl n
1. (Zoology) a paired organ of male insects, used to clasp the female during copulation
2. (Zoology) a paired organ of male sharks and related fish, used to assist the transfer of spermatozoa into the body of the female during copulation
References in periodicals archive ?
Part I's single essay is a medical overview, John Claspers 'The Management of Military Wounds in the Middle Ages'.
David Clasper, whose great great grandfather Richard was Harry's brother and the coxswain in the championship-winning boat, wrote a book called Rowing: A Way of Life, which told of the Claspers of Tyneside and was published in 2003 by Gateshead Council.
Claspers long, subelliptic, with inner border strongly sclerotized, with setae as illustrated (Fig.
Males can be distinguished by the pair of claspers at end of abdomen, used to hold the female during copulation.
4%; anterior nasal flap short; labial furrows absent; postoral groove short, extending ventrolaterally from corners of mouth; first dorsal fin strongly raked, apex rounded, posterior margin truncate, fin larger than second dorsal fin, its origin over midbase of pelvic fin; second dorsal fin strongly raked, apex narrowly rounded, posterior margin truncate; anal fin much larger and taller than second dorsal fin, its origin ahead of origin of second dorsal fin; pectoral fin short and broad, anterior margin convex and with broadly rounded apex, posterior margin truncate, free tip broadly rounded; pelvic fins relatively small; anal fin larger than second dorsal; claspers cylindrical, elongate and reaching anal fin origin in the mature individual, surface covered with denticles except for tip.
Our finds show that these extinct armored fishes, the placoderms, had intimate copulation with males inserting claspers (a structure that is part of the pelvic fin) inside the female to deposit sperm," Long said.
Now the family face forking out thousands to get it finished and a row has broken out between the Claspers and builder Frank Cooper who started work on the extension.
Claspers begin to elongate when the males approach 120 cm FL, and rapid clasper growth begins at 135 cm FL and slows by about 170 cm FL when they have reached their maximum adult size of 19-24 cm.
Long said that the claspers were used by the ancient fish, an extinct class of armoured fish called placoderms, to grip inside the female while they were mating.
The Claspers of Tyneside, telling of these forgotten sporting heroes.
In this boat, the Claspers won a pounds 50 price at the Royal Thames Regatta in 1844 and might have wrested the championship away from the Thames rowers if Richard hadn't made a slight navigational error.