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PARR , a name originally applied to the small Salmonoids abundant in See also:British See also:rivers, which were fcr a See also:long See also:- TIME (0. Eng. Lima, cf. Icel. timi, Swed. timme, hour, Dan. time; from the root also seen in " tide," properly the time of between the flow and ebb of the sea, cf. O. Eng. getidan, to happen, " even-tide," &c.; it is not directly related to Lat. tempus)
- TIME, MEASUREMENT OF
- TIME, STANDARD
time considered to constitute a distinct See also:species of See also:fish (See also:Salina salmulus). They possess the broad See also:head, See also:short snout and large See also:eye characteristic of See also:young Salmonoids, and are ornamented on the sides of the See also:body and tail with about eleven or more broad dark See also:cross-bars, the so-called parr-marks. However, See also:John See also:Shaw proved, by experiment, that these fishes represent merely the first See also:stage of growth of the See also:salmon, before it assumes, at an See also:age of one or two years, and when about six inches long, the silvery smolt-See also:dress preparatory to its first See also:migration to the See also:sea. The parr-marks are produced by a See also:deposit of See also:black pigment in the skin, and appear very soon after the exclusion of the fish from the See also:egg; they are still visible for some time below the new coat of scales of the smolt-stage, but have entirely disappeared on the first return of the young salmon from the sea. Although the juvenile See also:condition of the parr is now universally admitted, it is a remark-able fact that many male parr, from 7 to 8 inches long, have their sexual See also:organs fully See also:developed, and that their milt has all the fertilizing properties of the seminal fluid of a full-grown and sexually matured salmon. On the other See also:hand, no See also:female See also:part has ever been obtained with mature ova. Not only the salmon, but also the other species of Sallmo, the See also:grayling, and probably also the Coregoni, pass through a parr-stage of growth. The young of all these fishes arc barred, the salmon having generally eleven or more bars, and the parr of the migratory See also:trout from nine to ten, or two or three more than the See also:river-trout. In some of the small races or species of river-trout the parr-marks are retained throughout See also:life, but subject to changes in intensity of See also:colour.
End of Article: PARR
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