Results 41 to 50 of about 25,867 (270)

Concordant morphological and molecular clines in a contact zone of the Common and Spined toad (Bufo bufo and B. spinosus) in the northwest of France

open access: yesFrontiers in Zoology, 2016
Hybrid zones are regions where individuals of two species meet and produce hybrid progeny, and are often regarded as natural laboratories to understand the process of species formation. Two microevolutionary processes can take place in hybrid zones, with
J. Arntzen   +6 more
semanticscholar   +1 more source

Bufo bufo

open access: yes
BUFO BUFO (Linnaeus, 1758) Bufo gr. bufo Figure 21 Material. Hambach 11: one sacral vertebra (IPB-HaR 2020). Description. IPB-HaR 2020 is a medium-sized sacral vertebra provided with an anterior cotyle and two posterior condyles. The neural canal is subelliptical.
Villa, Andrea   +2 more
openaire   +3 more sources

Rediscovery of Pelobates fuscus insubricus in the Asti Province, north-western Italy

open access: yesActa Herpetologica, 2006
The amphibians of the pond complex “Stagni di Belangero” in the Po Plain, Asti Province, have been studied. The species living in the pond are Bufo bufo, Bufo viridis, Hyla intermedia, Pelobates fuscus, Rana dalmatina, Rana synklepton esculenta, Rana cf.
Vincenzo Mercurio, Fabrizio Li Vigni
doaj   +1 more source

Proarna bufo Distant 1905 [PDF]

open access: yes, 2019
Proarna bufo Distant, 1905d Proarna bufo Distant 1905d: 312. (Argentina and Bolivia) REMARKS. Sanborn & Heath (2014) determined there is a geographical separation between P. bergi and P. bufo. Specimens of P.
Sanborn, Allen F.
core   +1 more source

In vitro haemostatic effect of amphibian crude skin secretions in rabbit blood plasma

open access: yesJournal of Biological Research, 2019
In this research we have studied whether the amphibian crude skin secretions can modify some parameters of haemostatic system. We prepared the samples of crude skin secretions of Bombina bombina, Bombina variegata, Bufo bufo, and Bufotes viridis and ...
Iryna Udovychenko   +6 more
doaj   +1 more source

Morphological and molecular data to describe a hybrid population of the Common toad ( Bufo bufo ) and the Spined toad ( Bufo spinosus ) in western France

open access: yes, 2017
The use of hyper-variable markers across species is often hin- dered by low cross-species amplification success, a reduced level of polymorphism or a high frequency of null alleles.
Tania Trujillo   +3 more
semanticscholar   +1 more source

C-banding karyotypes and location of NOR's in the toad species Bufo bufo and Bufo viridis from Yugoslavia [PDF]

open access: yes, 2000
The karyotypes, C-banding patterns and positions of nucleolus organizer regions (NORs) of two European species of toads, Bufo bufo and Bufo viridis from seven localities in Yugoslavia were investigated.
Vujošević, Mladen   +3 more
core   +3 more sources

Convergent Total Synthesis of 16β‐Hydroxylpseudobufarenogin

open access: yesAngewandte Chemie, Volume 138, Issue 23, 1 June 2026.
We present a novel convergent strategy that integrates Pd/Ag‐promoted Suzuki–Miyaura coupling with Ir‐catalyzed radical‐relay cyclization, enabling the first total synthesis of 16β‐hydroxylpseudobufarenogin. This approach is broadly applicable to the total synthesis of various oxygenated bufadienolides by simply modifying the fragment structures ...
Wataru Shigematsu   +3 more
wiley   +2 more sources

Assessing the Presence, Pattern, and Environmental Correlates of Seasonal Skin Thickening in Anurans

open access: yesIntegrative Zoology, EarlyView.
Histological sections, like that of the ventral pectoral skin of Lithobates pipiens, were measured to assess variation in skin thickness throughout the year in three North American anuran species. After correcting for individual body size, we test whether skin thickness changes throughout the year and which factors (environment or life history) explain
Collin S. VanBuren   +3 more
wiley   +1 more source

Conservation genetics of an island toad: Bufo bufo in Jersey [PDF]

open access: yes, 2007
On Jersey (British Channel Islands), common toads often reproduce in small, urban ponds. This atypical breeding strategy has implications for their persistence and they have declined on the island in recent times.
John W Wilkinson (16063541)   +5 more
core  

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