Results 51 to 60 of about 23,946 (247)

Skeletal pathologies in extant crocodilians as a window into the paleopathology of fossil archosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract Crocodilians, together with birds, are the only extant relatives to many extinct archosaur groups, making them highly important for interpreting paleopathological conditions in a phylogenetic disease bracketing model. Despite this, comprehensive data on osteopathologies in crocodilians remain scarce.
Alexis Cornille   +6 more
wiley   +1 more source

Experimental quantification of long distance dispersal potential of aquatic snails in the gut of migratory birds. [PDF]

open access: yesPLoS ONE, 2012
Many plant seeds and invertebrates can survive passage through the digestive system of birds, which may lead to long distance dispersal (endozoochory) in case of prolonged retention by moving vectors.
Casper H A van Leeuwen   +3 more
doaj   +1 more source

Stream pollution causes aggregation of wintering insectivorous birds through increased aquatic emergence

open access: yesFrontiers in Ecology and Evolution, 2022
Cross-boundary prey subsidies can propagate the effects of human impacts from streams to terrestrial ecosystems, but effects during winter are poorly known. Here I focused on this season and investigated the effects of pollution due to a sewage treatment
Fabio Lepori
doaj   +1 more source

Aquatic Bird Bornavirus 1 in Wild Geese, Denmark [PDF]

open access: yesEmerging Infectious Diseases, 2015
To investigate aquatic bird bornavirus 1 in Europe, we examined 333 brains from hunter-killed geese in Denmark in 2014. Seven samples were positive by reverse transcription PCR and were 98.2%-99.8% identical; they were also 97.4%-98.1% identical to reference strains of aquatic bird bornavirus 1 from geese in North America.
Thomsen, Anders F   +5 more
openaire   +4 more sources

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Distribution, composition and seasonality of aquatic birds in the Nhecolândia sub-region of South Pantanal, Brazil

open access: yesBrazilian Journal of Biology
Despite remarkable significance of Pantanal for the conservation of aquatic birds, the status of their populations, the spatiotemporal patterns of distribution and habitat use and structure of communities are little known.
RJ Donatelli, SR Posso, MCB Toledo
doaj   +1 more source

Escape or be Preyed: New Records and Current Knowledge on Predators of Pseudinae Frogs (Anura: Hylidae) in South America

open access: yesActa Biológica Colombiana, 2019
Neotropical amphibians play important roles as preys and predators in freshwater and terrestrial ecosystems. The subfamily Pseudinae includes small and medium-sized frogs within three genera representing 13 valid species.
Paulo Landgref Filho   +6 more
doaj   +1 more source

Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment

open access: yesThe Anatomical Record, EarlyView.
Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga   +4 more
wiley   +1 more source

Complementary role of environmental DNA for line-transect bird surveys: A field test in a Japanese rice landscape

open access: yesEcological Indicators
Monitoring and conserving bird biodiversity in rice landscapes is a global challenge. Although environmental DNA (eDNA) metabarcoding can potentially provide a sensitive and comprehensive assessment of bird biodiversity in farmlands, there is a lack of ...
Naoki Katayama   +4 more
doaj   +1 more source

Phylogenetic analysis of avian schistosome Trichobilharzia regenti (Schistosomatidae, Digenea) from naturally infected hosts in northern Iran

open access: yesVeterinary Medicine and Science, 2023
Background Trichobilharzia regenti (T. regenti) is an avian schistosomatid fluke species that causes human cercarial dermatitis (HCD) in areas of aquaculture in northern Iran.
Elham Kia Lashaki   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy