Results 11 to 20 of about 1,829,061 (296)
New Caledonian crows keep ‘valuable’ hooked tools safer than basic non-hooked tools
The temporary storage and re-use of tools can significantly enhance foraging efficiency. New Caledonian crows in one of our study populations use two types of stick tools – hooked and non-hooked – which differ in raw material, manufacture costs, and ...
Barbara C Klump +2 more
doaj +1 more source
The effects of familiarity on escape responses in the Trinidadian guppy (Poecilia reticulata) [PDF]
Predation is the main cause of mortality during early life stages. The ability to avoid and evade potential threats is, therefore, favoured to evolve during the early stages of life.
Hayley L. Wolcott +2 more
doaj +2 more sources
In a period of ongoing climate changes, identifying drivers of overall and endemic species diversity is a key element in constructing new ecological patterns and determining the main goals of conservation.
Małgorzata Raduła +5 more
doaj +1 more source
Justice and the Convention on Biological Diversity [PDF]
Benefit sharing as envisaged by the 1992 Convention on Biological Diversity (CBD) is a relatively new idea in international law. Within the context of non-human biological resources, it aims to guarantee the conservation of biodiversity and its ...
Pogge, Thomas W, Schroeder, Doris
core +1 more source
How many species in the United States warrant consideration for Endangered Species Act protection? [PDF]
The U.S. Endangered Species Act (“ESA”) currently protects 1,682 species as endangered or threatened. According to the independent scientific organization NatureServe, however, there are more than 10,000 imperiled species in the United States that may ...
Noah Greenwald +3 more
doaj +2 more sources
Family C1 cysteine proteases: Biological diversity or redundancy? [PDF]
Recent progress in the identification and partial characterization of novel genes encoding cysteine proteases of the papain family has considerably increased our knowledge of this family of enzymes.
Brömme D. +4 more
core +1 more source
Divergence and introgression among the virilis group of Drosophila
Speciation with gene flow is now widely regarded as common. However, the frequency of introgression between recently diverged species and the evolutionary consequences of gene flow are still poorly understood.
Leeban H. Yusuf +3 more
doaj +1 more source
From Beethoven to Beyoncé: Do Changing Aesthetic Cultures Amount to “Cumulative Cultural Evolution?”
Culture can be defined as “group typical behaviour patterns shared by members of a community that rely on socially learned and transmitted information” (Laland and Hoppitt, 2003, p. 151).
Natalie C. Sinclair +4 more
doaj +1 more source
Dicranota Zetterstedt, 1838 crane flies (Diptera, Pediciidae) of Korea [PDF]
Pediciinae crane flies belonging to the genus Dicranota Zetterstedt, 1838 of the Korean Peninsula were studied beginning in 1933, but only seven species have been recorded from North Korea so far; the genus was unknown from South Korea. Seventeen species
Sigitas Podenas +5 more
doaj +3 more sources
Whether a species declines under the current biodiversity crisis could partly depend on its range size. Here, the authors use replicated metacommunity data to identify global patterns in the relationship between species’ range size and changes in ...
Wu-Bing Xu +15 more
doaj +1 more source

