Results 61 to 70 of about 25,867 (270)
Sperm Head–Tail Coupling Apparatus Diversity and Common Themes Among Species
Andrology, EarlyView.ABSTRACT Background A stable connection between the sperm head (containing the nucleus and acrosome) and tail (containing the axoneme, mitochondrial sheath, and periaxonemal structures) is critical for fertility. This connection is mediated by a series of nuclear, cytoplasmic, and centriole components that make up the head–tail coupling apparatus (HTCA)
Danielle B. Buglak +2 more
wiley +1 more source
Внутривидовая изменчивость серой жабы Bufo bufo. [PDF]
, 2015 В статье рассмотрены вопросы внутривидовой изменчивости популяций серой жабы. Установ-лена специфичность морфометрической структуры Bufo bufo,обитающей в Брестской, Витебской, Гомельской, Гродненской и Могилевской областях Республики Беларусь. Полученные
Хандогий (Khandogy A.V.), А.В.
core +1 more source
Hemoglobin affinity for oxygen in three subspecies of toads (Bufo sp.) living at different altitudes
Biological Research, 2000 Blood oxygen affinity and red blood cell properties were measured in three subspecies of genus Bufo: Bufo spinulosus limensis, collected at sea level and at an average day temperature of 20ºC; Bufo spinulosus trifolium, from 3100 m, average day ...
HRVOJ OSTOJIC +2 more
doaj
Tongue and Glottis Morphology of Cathartes aura and the Secret of Its Functional Adaptation
Acta Zoologica, EarlyView.ABSTRACT Cathartes aura, commonly known as the Turkey vulture, is a scavenger bird belonging to the family Cathartidae that is widely distributed throughout the Americas and classified as a New World vulture. Its diet primarily consists of small‐sized carcasses, predominantly of wild animals.
Jean Caio Figueiredo de Almeida +5 more
wiley +1 more source
Proteins of parotoid gland secretions from toads of the genus Bufo [PDF]
, 2000 Freeze-dried parotoid gland secretions from toads of the genus Bufo contained large proportions of protein (25-35% by weight). SDS-PAGE suggested that secretions from several species of Bufo contained mixtures of proteins in the relative molecular mass ...
Perry, D.
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Conservation Science and Practice, EarlyView.We evaluated the impacts of grazing, climatic variability, and vegetation productivity on the population dynamics of a northern Great Plains greater sage‐grouse population. We found winter temperature influenced annual population growth rates, but did not detect influences of drought, breeding season weather, vegetation productivity or short‐term ...
David Messmer +6 more
wiley +1 more source
Morphological comparison of Bufo Bufo and Bufo verrucosissimus species in Turkey [PDF]
, 2018 Bu tez çalışmasının amacı Türkiye'de dağılım gösteren Bufo cinsine ait olan Bufo bufo (Linneaus, 1758) ve Bufo verrucosissimus (Pallas, 1814) türleri arasındaki morfolojik farklılıkların belirlenmesidir.
Dursun, Cantekin
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, 2015 Bufo cinctus Wied Plate 54 1823 Abbildungen: Lief. 3 (views of two specimens). Reference is to Schinz, nothing to Wied. 1824 Isis: 672 (listed with reference to the Abbildungen).
Myers, Charles W., Vanzolini, Paulo E.
core +1 more source
Revista Peruana de Biología, 2013 Se describen los renacuajos de Bufo arequipensis y Bufo cophotis. Ningún carácter externo examinado permite distinguir la larva de las especies nominales B. arequipensis, B. flavolineatus y B. trifolium.
César Aguilar, Rocío Gamarra
doaj +1 more source
A neuro‐behavioural model of neophobia
Biological Reviews, Volume 101, Issue 4, Page 1863-1876, August 2026.ABSTRACT Fear can be defined as the internal neurological state that releases a repertoire of behaviours an animal performs to reduce the effect of an aversive factor. Neophobia, the fear of novelty, is a fundamental behavioural trait observed across a wide range of species from arthropods to humans.
Arik Dorfman, Aziz Subach, Inon Scharf
wiley +1 more source