REPORT ON MOSQUITOES. 113 



"As destroyers of all other species in natural waters, all fishes 

 are of some value. 



"There is no necessity for stocking natural waters with fish 

 as few mosquitoes are developed in such as are already inhabited 

 by them. 



"The presence of bass, sunfish, pike and other predaceous 

 species is prejudicial to an abundance of the smaller and insect 

 feeding kinds. 



"Much the larger proportion of mosquitoes is developed in 

 insignificant places uninhabited by fishes. 



■M 



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v> -'.. 



Figure 34. 



Erimyzon siiccctta: the Chub-sucker. (From Jordan & Evermann, Bull. 47, U. 

 S. Nat. Mus.) 



"The number of mosquitoes developing where there is an 

 abundance of aquatic insects and their larvae is very small. The 

 great irruptions of mosquitoes come from places temporarily 

 filled by heavy rains." 



It appears then, that New Jersey is naturally provided with a 

 sufficient fish fauna to take care of nearly all the mosquitoes that 

 attempt to breed in natural waters. That the only lack is a top 

 minnow capable of taking care of Anopheles in bodies of water 

 filled with vegetation. That the top minnow, Gambiisia aifinis, 

 is a fish such as is needed and that there is at least a fair chance 

 of its successful introduction into the State. 



8 MO 



