Animal Geography : the Faunas of the Natural Regions of the Globe
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As its shallowness makes Lake Balaton a mere pool, we find that here the fauna forms a unity. Necessarily there is no deep-water fauna, and it is not possible to discriminate accurately between httoral and pelagic faunas, as the bottom is everywhere so close to the surface. The total number of species does not differ greatly from that of the Scottish lochs, being about 475, including 38 kinds of fish, but exclusive of insects and air-breathing vertebrates. The fish show some, interesting pecuKa...rities. There are no trout, but the lake contains such common fresh-water forms as perch, gobies, pike, eels, roach, tench, gudgeon, &c., and in addition two forms of special interest. One is the cat- fish caUed ' Wels ' by the Germans {Silurus glanis), 200 THE ANIMALS OF LAKES AND RIVERS and the other the sterlet (Acipenser ruthenus). The cat-fish constitute a large family of fresh-water fish especially characteristic of the equatorial region. The wels is found only in Eastern Europe, and is the only member of its family in European waters.
What to read after Animal Geography : the Faunas of the Natural Regions of the Globe?
You can find similar books in the "Read Also" column, or choose other free books by Newbigin, Marion I. (Marion Isabel), 1869-1934 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
As its shallowness makes Lake Balaton a mere pool, we find that here the fauna forms a unity. Necessarily there is no deep-water fauna, and it is not possible to discriminate accurately between httoral and pelagic faunas, as the bottom is everywhere so close to the surface. The total number of species does not differ greatly from that of the Scottish lochs, being about 475, including 38 kinds of fish, but exclusive of insects and air-breathing vertebrates. The fish show some, interesting pecuKa...rities. There are no trout, but the lake contains such common fresh-water forms as perch, gobies, pike, eels, roach, tench, gudgeon, &c., and in addition two forms of special interest. One is the cat- fish caUed ' Wels ' by the Germans {Silurus glanis), 200 THE ANIMALS OF LAKES AND RIVERS and the other the sterlet (Acipenser ruthenus). The cat-fish constitute a large family of fresh-water fish especially characteristic of the equatorial region. The wels is found only in Eastern Europe, and is the only member of its family in European waters.
What to read after Animal Geography : the Faunas of the Natural Regions of the Globe?
You can find similar books in the "Read Also" column, or choose other free books by Newbigin, Marion I. (Marion Isabel), 1869-1934 to read onlineMoreLess
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