The complete eradication of black rats on the atoll of Palmyra resulted in a documented, concomitant drop in the number of mosquitos also found on the atoll. Now, it appears that the same measure has conferred additional, considerable ecological benefits on Palmyra.The complete eradication of black rats on the atoll of Palmyra resulted in a documented, concomitant drop in the number of mosquitos also found on the atoll. Now, it appears that the same measure has conferred additional, considerable ecological benefits on Palmyra.