Results 151 to 160 of about 59,296 (338)

The velar chord and dynamic integration of the gular valve in crocodylians

The Anatomical Record, Volume 308, Issue 8, Page 2234-2249, August 2025.
Crocodilians have a unique gular valve that forms a seal between the oral cavity and the pharynx. The gular valve has traditionally been treated as two parts: a mobile ventral flap associated with the tongue and a fixed dorsal velum palatini. This work describes a connective tissue band, the velar chord, which functionally integrates the two parts of ...
Bruce A. Young, Michael Cramberg, Olivia G. Young   +2 more
wiley   +1 more source

Integrated evidence reveals a new subspecies of the genus Seuratascaris (Nematoda: Ascaridomorpha), with characterization of the complete mitochondrial genome

Parasite
Species of Seuratascaris Sprent, 1985 are a rarely reported group of ascaridoid nematodes, parasitising various frogs and toads. In the present study, a new subspecies of Seuratascaris, S. physalis bazhaiensis n. subsp.
Gu Xiao-Hong, Mu Jia-Tong, Chen Hui-Xia, Li Liang   +3 more
doaj   +1 more source

Individual Discrimination Within, but Not Between, Two Vocalization Types of the Black‐Capped Chickadee

Ethology, Volume 131, Issue 8, Page 1-12, August 2025.
Black‐capped chickadees' chick‐a‐dee calls and fee‐bee songs are individually distinct. We used an operant conditioning Go/No‐go paradigm to train chickadees to discriminate among four individuals' chick‐a‐dee calls or fee‐bee songs. Chickadees successfully learned this discrimination rule.
Sarah M. L. Smeltz, Moriah J. Deimeke, Carolina Montenegro, Prateek K. Sahu, Katharine H. Stenstrom, Andrés Camacho‐Alpízar, Christopher B. Sturdy   +6 more
wiley   +1 more source

‘Nature of the year’ in Germany: An effective policy to raise public awareness?

People and Nature, Volume 7, Issue 7, Page 1593-1604, July 2025.
Abstract Building public awareness for conservation can be done in different ways. However, the impact of the conservation marketing techniques is not well understood. The ‘nature of the year’ award is a public awareness building strategy for conservation in Germany, which aims to draw attention to annually selected species and their habitats. In order
Hilke Hollens‐Kuhr, Sascha Buchholz, Nadja Pernat   +2 more
wiley   +1 more source

In Vouchers We (Hope to) Trust: Unveiling Hidden Errors in GenBank's Tetrapod Taxonomic Foundations

Molecular Ecology, Volume 34, Issue 13, July 2025.
ABSTRACT Genetic repositories are invaluable resources foundational to various biological disciplines. While their data and metadata reliability are essential for robust research outcomes, numerous studies have highlighted data quality and consistency issues.
Albert Carné, David R. Vieites, Matthijs P. van den Burg   +2 more
wiley   +1 more source

First observation of facultative paedomorphosis in the Danube crested newt (Triturus dobrogicus Kiritzescu, 1903) and the occurrence of facultative paedomorphosis in two newt species from soda pans of the Danube-Tisza Interfluve (Kiskunság National Park, Hungary) [PDF]

, 2013
The first observation of paedomorphosis in Triturus dobrogicus and the occurrence of facultative paedomorphosis in two newt species (T.dobrogicus and Lissotriton vulgaris) from soda pans of the Danube- Tisza Interfluve, Hungary are reported in this ...
Cozma, Nastasia Julianna, Mester, Béla, Puky, Miklós   +2 more
core  

Head form variation in mountain newts of the genus Calotriton (Amphibia, Salamandridae) in a phylogeographic context

Zoologica Scripta, Volume 54, Issue 4, Page 473-486, July 2025.
Abstract Relief has a profound impact on the genetic structure of species. While the geographic ordination of genetic variation is assessed in many mountain species, the factors involved in phenotypic differentiation and its congruence with phylogeographic history have been largely underexplored. This is the case of the genus Calotriton.
Alejandro García‐Salmerón, Francesc Muñoz‐Muñoz, Anna Soler‐Membrives, Emilio Valbuena‐Ureña   +3 more
wiley   +1 more source

Risk posed by the HPAI virus H5N1, Eurasian lineage goose/Guangdong clade 2.3.4.4b. genotype B3.13, currently circulating in the US

EFSA Journal, Volume 23, Issue 7, July 2025.
Abstract The emergence of highly pathogenic avian influenza (HPAI) A(H5N1), clade 2.3.4.4b, genotype B3.13 in U.S. dairy cattle marks a significant shift in the virus' host range and epidemiological profile. Infected cattle typically exhibit mild clinical signs, such as reduced milk production, mastitis and fever, with morbidity generally below 20% and
European Food Safety Authority (EFSA), Julio Alvarez, Alessio Bortolami, Mariette Ducatez, Claire Guinat, Jan Arend Stegeman, Alessandro Broglia, Helene Jensen, Kamela Kryemadhi, Andrea Gervelmeyer   +9 more
wiley   +1 more source

Genetic identification of gastrointestinal parasites in the world's most endangered ungulate, the hirola (Beatragus hunteri)

Veterinary Record, Volume 196, Issue 12, 21/28 June 2025.
Abstract Background The hirola (Beatragus hunteri) is the world's most critically endangered antelope. Its parasitic fauna has never been genetically characterised, raising questions about its possible role in the species' population decline. This study aimed to assess the presence of gastrointestinal parasites in hirolas and their transmission ...
Susana Remesar, David García‐Dios, Giovanni Forcina, Abdullahi H. Ali, Mathew Ndunda, Michael J. Jowers   +5 more
wiley   +1 more source

On the Origin of the Pineal Body as an Amesial Structure, deduced from the study of its Development in Amphibia [PDF]

, 1904
John Cameron
openalex   +1 more source