CRASPEDACUSTA SOWERBII (LANKESTER, 1880) IS A CNIDARIAN THOUGHT TO ORIGINATE FROM THE YANGTZE RIVER VALLEY IN CHINA. HOWEVER, C. SOWERBII IS NOW AN INVASIVE SPECIES IN FRESHWATER SYSTEMS WORLDWIDE. IN CHILE, C. SOWERBII WAS FIRST RECORDED IN 1942 BY PORTER AND SCHMITT IN THE MARGA-MARGA RESERVOIR, IN VALPARAÍSO. SINCE THEN, THERE HAVE BEEN FEW FURTHER CHILEAN RECORDS OF THIS SPECIES. HERE, WE REPORT THE PRESENCE OF C. SOWERBII MEDUSAE IN SANTA ELENA LAKE, BULNES, REGIÓN DEL BÍO- BÍO, ALONG WITH LIMNOLOGICAL PARAMETERS.

EIGHT SPECIES OF FALCONS (FALCONIDAE) HAVE BEEN RECORDED IN CHILE. TO DATE, ALL RELEVANT STUDIES CONSIDERED BIRDS OF PREY IN GENERAL, WITH NO SPECIFIC FOCUS ON THIS FAMILY. BASED ON A COMPREHENSIVE REVIEW OF THE LITERATURE, AN UPDATED REPORT IS PRESENTED ON THE STATE OF KNOWLEDGE OF FALCONS IN CHILE. THIS DATA SET COMPRISES A TOTAL OF 165 STUDIES PUBLISHED FROM 1915 TO 2015. SCIENTIFIC PRODUCTIVITY WAS LOWEST IN 1945-1955 AND HIGHEST IN 2005-2015, WITH A STEADY INCREASE SINCE 1985. HOWEVER, THE FOCUS OF RESEARCH IN CHILE IS BIASED TOWARDS TWO SPECIES: MILVAGO CHIMANGO AND FALCO SPARVERIUS. TWO ADMINISTRATIVE REGIONS, SANTIAGO METROPOLITAN REGION AND ARAUCANÍA, WERE THE MOST STUDIED WHEREAS ARICA, TARAPACÁ, AND ANTOFAGASTA REGIONS ACCOUNTED FOR FEWER THAN 1% OF THE STUDIES. FAUNISTIC STUDIES (INCLUDING ABUNDANCE) WERE THE MOST COMMON RESEARCH TOPIC. IT IS SUGGESTED THAT THE LACK OF KNOWLEDGE REGARDING SPECIES IN THE GENUS PHALCOBOENUS MAY NEGATIVELY AFFECT THE CONSERVATION STATUS OF THESE SPECIES, AND BELIEVED THAT THE LACK OF PREFERENCE FOR CERTAIN RESEARCH TOPICS, SUCH AS SYSTEMATICS AND NATURAL HISTORY, ARE THE RESULT OF HISTORICAL FACTORS INCLUDING THE DECREASE OF FIELD BIOLOGY AND PERHAPS A BIASED INTEREST OF THE RESEARCHERS. FINALLY, THIS REVIEW HIGHLIGHTS THE PAUCITY OF INFORMATION ON FALCONS AND PROVIDES A FRAMEWORK FOR DIRECTING FUTURE RESEARCH.