Results 31 to 40 of about 13,612 (173)

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  

Ecological analysis of the helminth fauna in Bufo bufo (Amphibia: Anura) from various habitats

open access: yesNature Conservation Research: Заповедная наука, 2020
In this study is made an ecological analysis of the species composition, structure of the helminth community and the invasion degree of Bufo bufo in different habitats in the National Park «Smolny» (Republic of Mordovia, Russia).
Igor V. Chikhlyaev   +2 more
doaj   +1 more source

Updated Chorotypes of Terrestrial Vertebrates Shed New Light on Zoogeographical Regions in China

open access: yesIntegrative Zoology, EarlyView.
Chorotype represents a fundamental concept for identifying groups of species that share similar distribution patterns. However, the last comprehensive revision of animal chorotypes in China was performed more than a decade ago. Here, we update the chorotype classifications for 1040 species and propose an updated zoogeographical regionalization scheme ...
Baoming Zhang   +6 more
wiley   +1 more source

High‐Altitude Adaptation of Frogs (Case Study: Nanorana parkeri): From Physiological Phenotypes to AltitudeOmics

open access: yesIntegrative Zoology, EarlyView.
High altitudes are challenging for the animals that inhabit these environments. The Xizang plateau frog (Nanorana parkeri) survives in high‐altitude environments through a synergistic strategy of metabolic remodeling and protein expression adjustment to optimize energy efficiency and enhance cellular protection.
Xuejing Zhang   +6 more
wiley   +1 more source

Primeras observaciones sobre la alimentación de sapos (Bufo bufo) juveniles durante la emergencia en el País Vasco [PDF]

open access: yesMunibe Ciencias Naturales, 1998
Se aportan las primeras observaciones sobre Bufo bufo, que vienen a completar los estudios de alimentación de anuros juveniles realizados en el País Vasco durante el periodo de emergencia.
VIGNES, J.C.
doaj  

The Wonder Years: A Demographic Approach to Revisit the Age‐at‐Size Conundrum in Amphibians

open access: yesIntegrative Zoology, EarlyView.
We combined repeated body size measurements of marked individuals of unknown age throughout their adult life with growth records of individuals marked as postmetamorphic juveniles and recaptured years later as sexually mature adults, focusing on 10 amphibian species in central Spain.
Gregorio Sánchez‐Montes   +5 more
wiley   +1 more source

Anomalías oculares en híbridos Bufo paranecmis ♂ x Bufo arenarum ♀ (Anura: bufonidae) [PDF]

open access: yes, 1994
The hybrids between Bufo paracnemis ♂ x Bufo arenarum ♀ are counted among tbe so called "vital hybrids". Our resu1ts have revealed relevant ocular anomalies in 90% of cases.
Pisanó, Armando   +2 more
core  

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