Results 141 to 150 of about 58,012 (219)

The mechanism of labor in nonhuman primates: A look inside

The Anatomical Record, EarlyView.
Abstract While in humans, the flexed position of the fetus and its rotating course down the birth canal are well documented, in other primates the mechanism of labor is unknown. Despite the lack of comparative data, it is commonly assumed that the human obstetric mechanism is unique, and anthropologists have disputed when and why the transition to the ...
Melissa K. Stoller
wiley   +1 more source

Fungal endophytes of cactus (<i>Stenocereus</i> spp.) as a potential alternative to alleviate drought stress in juveniles of <i>Theobroma cacao</i> L. ICS95. [PDF]

mSphere
Trujillo-Ortigoza KS, Marbello-Santrich A, González-Tobón J, Rada F, Guevara-Suarez M, Restrepo S.   +5 more
europepmc   +1 more source

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

Regrowing the growth zone: metamorphosis kickstarts regeneration in the annelid Capitella teleta. [PDF]

Development
Boyd AA, Seaver EC.
europepmc   +1 more source

Postcranial anatomy and osteohistology of an early prozostrodont cynodont from the Upper Triassic of Brazil

The Anatomical Record, EarlyView.
Abstract Prozostrodon brasiliensis, a probainognathian cynodont of the clade Prozostrodontia, is recognized as a key taxon for understanding the origin of Mammaliaformes and mammals. Despite detailed investigations of its cranial anatomy, the postcranial skeleton has received comparatively less attention.
Iasmim M. Michelotti, Lívia Roese‐Miron, Brodsky Dantas Macedo Farias, Marina Bento Soares, Leonardo Kerber   +4 more
wiley   +1 more source

Stress Assessment in <i>Caretta caretta</i> During the Rehabilitation Period. [PDF]

Animals (Basel)
Lomonaco C, Schiró G, Galluzzo P, Disclafani R, Vazzana I, Dara S, Piccione G, Monteverde V, Giannetto C.   +8 more
europepmc   +1 more source

Developmental differences in cortical bone structure in chimpanzee and human femora reflect early locomotor independence in humans

The Anatomical Record, EarlyView.
Abstract The cortical bone structure of long bone diaphyses changes throughout growth via skeletal modeling and has important implications for bone strength and structural integrity. Ontogenetic trends in diaphyseal structure have been identified in both chimpanzees and humans but it is not yet clear how these trends compare given notable differences ...
Karen R. Swan, Rachel Ives, Zewdi J. Tsegai, Louise T. Humphrey   +3 more
wiley   +1 more source

Determinants of Soil Microarthropod Community Biodiversity in the Svalbard High Arctic: Locality or Vegetation Community? [PDF]

Ecol Evol
Seniczak S, Seniczak A, Kaczmarek S, Iturrondobeitia JC, Marquardt T, Coulson SJ.   +5 more
europepmc   +1 more source

Integrated microanatomy and microstructure of the maxillary tooth plate reveal a reinforced feeding system and tougher diet in Late Triassic Hyperodapedontinae (Rhynchosauria, Archosauromorpha)

The Anatomical Record, EarlyView.
Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini, Pedro L. B. Pruciano, Brodsky D. M. Farias, Marina B. Soares   +3 more
wiley   +1 more source

Analysis of Nematode Ventral Nerve Cords Suggests Multiple Instances of Evolutionary Changes to Neuron Number. [PDF]

Evol Dev
Han J, Ficca A, Lanzatella M, Leang K, Barnum M, Boudreaux JCT, Schroeder NE.   +6 more
europepmc   +1 more source