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Bentarasko Benta Section 06
Page 02
We left at 7.30 a.m. under a limpid sky of gorgeous cobalt blue. We passed two islands--one 700 m. long (Leda Island), the other 2,000 m. (Leander Island). When we had gone but 11,500 m. we arrived at one of the most beautiful bits of river scenery I have ever gazed upon--the spot where the immense S. Manoel River or Tres Barras or Paranatinga met the Arinos-Juruena. The latter river at that spot described a sharp turn from 20 deg. b.m. to 320 deg. b.m. We perceived a range of hills before us to the north. Close to the bank gradually appeared a large shed with a clearing near it on a high headland some 200 ft. above the level of the river where the stream turned. On the left bank, before we arrived at the meeting-place of those two giant streams, we found a tributary, the Bararati, 30 m. broad.
In the south, this species extends to the Congo River, as I am told by native traders who have visited the coast, between the Gaboon and that river. Beyond that, I am not informed. This animal is only found at a distance from the coast in most cases, and, according to my best information, approaches it nowhere so nearly as on the south side of this river, where they have been found within ten miles of the sea. This, however, is only of late occurrence. I am informed by some of the oldest Mpongwe men that formerly he was only found on the sources of the river, but that at present he may be found within half a day's walk of its mouth. Formerly he inhabited the mountainous ridge where Bushmen alone inhabited, but now he boldly approaches the Mpongwe plantations. This is doubtless the reason of the scarcity of information in years past, as the opportunities for receiving a knowledge of the animal have not been wanting; traders having for one hundred years frequented this river, and specimens, such as have been brought here within a year, could not have been exhibited without having attracted the attention of the most stupid.
It is not surprising under these circumstances to learn that sticklebacks are successful and increasing animals. Their numbers are enormous, wherever they get a fair chance in life, because they multiply rapidly up to the extreme limit of the means of subsistence, and develop as fast as food remains for them. There the inexorable Malthusian law at last steps in: when there is not food enough for all some must starve; that is the long and the short of the great population question. But while provender is forthcoming they increase gayly. Sticklebacks live mainly on the spawn of other fish, though they are so careful of their own, and they are therefore naturally hated by trout-preservers and owners of fisheries in general. Thousands and thousands are caught each year; in some places, indeed, they are so numerous that they are used as manure. It is their numbers, of course, that make them formidable; they are the locusts of the streams, well armed and pugnacious, and provided with most remarkable parental instincts of a protective character, which enables them to fill up all vacancies in their ranks as fast as they occur with astonishing promptitude.
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