Results 151 to 160 of about 489,854 (362)
Molecular Reproduction and DevelopmentABSTRACTBioenergetics plays a crucial role in sperm functions, including motility, capacitation‐related protein modifications, oocyte recognition and interaction, all of which are essential for fertilization. Sperm metabolism is recognized as flexible, responding to environmental cues and energetic demands during ejaculation, the journey along the ...
Giselle Adriana Abruzzese +2 more
openaire +2 more sources
Individual Effect of Bull Prevails over Sperm Characteristics in Predictive Models
BiomoleculesSperm quality influences bovine in vitro embryo production (IVEP). Linear regression is a statistical tool that models the relationship between a dependent variable and one or more independent variables. It can be used to predict outcomes, analyze trends,
Adriano Felipe Perez Siqueira +11 more
doaj +1 more source
Early stages of tooth development in the harbor porpoise Phocoena phocoena
The Anatomical Record, EarlyView.Abstract Here we describe the stages of tooth development in toothed whales on the basis of the harbor porpoise (Phocoena phocoena). The aim of the study was to find out whether these stages are identical to those of other mammals analyzed so far although toothed whales are homodont and monophyodont.
Lasse M. Mathes +2 more
wiley +1 more source
The Anatomical Record, EarlyView.This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti +2 more
wiley +1 more source
Tracing the evolutionary history of the morpho‐anatomy of baculum in primates
The Anatomical Record, EarlyView.Abstract Animal morphology reflects both evolutionary history and present‐day adaptation. Male mammal copulatory structures such as the baculum (penile bone) are ideal for studying these processes because of their complexity and high interspecific variability. In primates, however, research has focused mostly on baculum length.
Federica Spani +3 more
wiley +1 more source
, 1997 PURPOSE: We determined the prevalence of requests for postmortem sperm procurement and the degree to which procurement is performed by those working in the field of infertility.
O'Neill, Kathryn +5 more
core +1 more source
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 +4 more
wiley +1 more source
, 2016 Fern spores germinate into haploid fern gametophytes; small plants only a few millimeters in diameter. These gametophytes produce sperm by mitosis in small sacs called antheridia. When placed in water, the antheridium opens up, and the sperm are released.
Juarez, Cristina, Fink, Rachel
core +1 more source
The Anatomical Record, EarlyView.Abstract Stenopodidea represents one of the basal lineages within Pleocyemata, yet the male reproductive system (MRS) of this group remains poorly understood, with limited information available regarding its morphology and function. This study provides the first detailed description of the MRS in four stenopodidean shrimp species from two families ...
Caio Santos Nogueira +2 more
wiley +1 more source
, 2011 Fern spores germinate into haploid fern gametophytes; small plants only a few millimeters in diameter. These gametophytes produce sperm by mitosis in small sacs called antheridia. When placed in water, the antheridium opens up, and the sperm are released.
Juarez, Cristina, Fink, Rachel
core +1 more source