AGRIS (FAO)

Aquatic Sciences and Fisheries Abstracts (ASFA - FAO)

BIOSIS Previews

CAB Abstracts

CrossRef

EBSCO

Electronic Resources from Smithsonian Institution Libraries (USA)

Google Acadêmico (Google Scholar) 

Index Copernicus International

ISI Web of Knowledge

Portal de Periódicos CAPES (Brasil)

ReseachGate

ROAD - Diretory of Open Accesss Scholary Resources

Science Citation Index Expanded

SCOPUS

Sherpa/Romeo

Sistema Regional de Información en Línea para Revistas Científicas de América Latina (Latindex)

Sumários de Revistas Brasileiras (Sumarios.org)

Zoological Record