Results 51 to 60 of about 14,937 (272)
The Anatomical Record, EarlyView.Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga +4 more
wiley +1 more source
Limnological ReviewFreshwater bivalves play essential ecological roles in ecosystems, but they are among the most threatened fauna worldwide. Despite receiving industrial and domestic wastes, the Guandu River is the main source of drinking water for more than nine million ...
Nathália Rodrigues +4 more
doaj +1 more source
Eciton Army Ants—Umbrella Species for Conservation in Neotropical Forests
Diversity, 2021 Identification of priority areas for conservation is crucial for the maintenance and protection of biodiversity, particularly in tropical forests where biodiversity continues to be lost at alarming rates.
Sílvia Pérez-Espona
doaj +1 more source
The Impact of Global Climate Change on Tropical Forest Biodiversity in Amazonia [PDF]
, 2002 Species’ ranges are configured according to their tolerance of environmental conditions, especially climate, and their history of dispersal since speciation.
Miles, Lera Jane
core
Ecology and evolution of pyrazines in insects
Biological Reviews, EarlyView.ABSTRACT Chemical communication is the oldest and most widespread form of signalling among and within organisms. Among the many compounds involved in such communication, pyrazines – nitrogen‐containing heterocyclic molecules – are especially intriguing due to their widespread occurrence across the tree of life, from bacteria and fungi to insects and ...
Zowi Oudendijk +2 more
wiley +1 more source
, 2021 A catalogue of Helobdella produced 46 nominal species reported to date from South America. Only 14 species of Helobdella had been registered for South America until 1981. Almost 90% of the present fauna is endemic to the South American continent. Only fi
Christoffersen, Martin Lindsey
core +1 more source
How wildlife respond to tropical cyclones: short‐term tactics and long‐term impacts
Biological Reviews, EarlyView.ABSTRACT From butterflies to lizards and from sharks to seabirds, wildlife exhibit tactics to survive the impacts of tropical cyclones, also known as hurricanes, cyclones, or typhoons depending on where they occur. Some species seek refuge during the storm by moving, some remain in place and ride it out, and others move longer distances, avoiding the ...
Erin L. Koen +15 more
wiley +1 more source
Preface: How far has Neotropical Ichthyology progressed in twenty years?
Neotropical Ichthyology, 2018 Studies on the diversity, taxonomy, phylogeny, and biogeography of Neotropical Fishes have thrived over the twenty years that have elapsed since the first symposium on their phylogeny and classification in Porto Alegre, Brazil.
José L. O. Birindelli +1 more
doaj +1 more source
Flight of the dragons: a global review of migration in Odonata
Biological Reviews, EarlyView.ABSTRACT Insects are the most abundant and ecologically important animal migrants. Yet, we know relatively little about the patterns and processes underlying insect migration. Dragonflies (Anisoptera) and damselflies (Zygoptera) comprise the ancient insect order Odonata, whose ancestors were the first organisms to fly on Earth.
Johanna S.U. Hedlund +3 more
wiley +1 more source
Impacts of small-scale engineering projects on Neotropical freshwater fishes [PDF]
Neotropical IchthyologyNeotropical freshwater ecosystems harbor some of the world’s most diverse fish communities, playing a fundamental role in ecosystem functionality and providing essential and free services to human societies.
Franco Teixeira de Mello +8 more
doaj +1 more source