Results 121 to 130 of about 65,346 (303)

Selection against spermatozoa with fragmented DNA after postovulatory mating depends on the type of damage

Reproductive Biology and Endocrinology, 2010
Background Before ovulation, sperm-oviduct interaction mechanisms may act as checkpoint for the selection of fertilizing spermatozoa in mammals. Postovulatory mating does not allow the sperm to attach to the oviduct, and spermatozoa may only undergo some
Pintado Belén, Gutiérrez-Adán Alfonso, Fernández-González Raúl, Pérez-Crespo Miriam, Hourcade Juan D   +4 more
doaj   +1 more source

Casanovas are liars : behavioral syndromes, sperm competition risk, and the evolution of deceptive male mating behavior in live-bearing fishes [version 2; referees: 2 approved, 1 approved with reservations]

, 2013
Male reproductive biology can by characterized through competition over mates as well as mate choice. Multiple mating and male mate choice copying, especially in internally fertilizing species, set the stage for increased sperm competition, i.e., sperm ...
Geupel, Holger, David Bierbach, Ingo Schlupp, Holger Geupel, Schlupp, Ingo, Plath, Martin, Amber M Makowicz, Bierbach, David, Streit, Bruno, Bruno Streit, Makowicz, Amber M., Martin Plath   +11 more
core   +1 more source

Vitrification of Large Volumes of Stallion Sperm in Comparison With Spheres and Conventional Freezing: Effect of Warming Procedures and Sperm Selection

, 2019
Stallion sperm was vitrified using straws in comparison with spheres and conventional freezing. Vitrification was performed plunging 30 mL of sperm (spheres) or 0.5 mL straws into liquid nitrogen (LN2) and conventional freezing using 0.5 mL straws frozen ...
Dorado Martín, Jesús, Consuegra, Cesar, Morrel, Jane, Pereira Aguilar Blasa, Arenas, Regina, Díaz Jiménez María, Hidalgo Prieto Manuel, Crespo Castejón, Francisco   +7 more
core   +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, Maria Pia Morigi, Matteo Bettuzzi, Monica Carosi   +3 more
wiley   +1 more source

Male reproductive system in stenopodidean shrimps: Unveiling basal reproductive traits in shrimp‐like Pleocyemata (Stenopodidae and Spongicolidae)

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, Lucas Rezende Penido Paschoal, Fernando José Zara   +2 more
wiley   +1 more source

Ursolic Acid Alleviates Orchitis via Modulating Ferroptosis in Peritubular Myoid Cells of Testis

Animal Research and One Health, EarlyView.
Ursolic acid modulates key ferroptosis‐related pathways in the peritubular myoid cells of the testis in forest musk deer. ABSTRACT Chronic stress adversely affects reproductive health, increasing susceptibility to pathologies such as orchitis. Additionally, the maintenance of iron homeostasis is essential for preserving the function of the testicles ...
Yang Wang, Tianqi Jin, Zexin Chen, Ye Gong, Qimin Liu, Zifang Wu, Heran Cao, Yan Li, Yuyan Liu, Tianhao Yang, Zhihong Jiang, Wuzi Dong   +11 more
wiley   +1 more source

Association between hypo-osmotic swelling test-induced tail swelling patterns and sperm quality

Future Science OA
Aim: The current sperm selection procedure for intracytoplasmic sperm injection has limited ability to detect structural and functional abnormalities of the spermatozoa.
Salima Daoud, Olfa Abdelkefi, Afifa Sellami, Azza Bensalem, Nozha Chakroun, Tarek Rebai   +5 more
doaj   +1 more source

Variation in sperm whale (Physeter macrocephalus) coda vocalizations and social structure in the North Atlantic Ocean

, 2009
This study aimed at complementing studies of sperm whale social and vocal behaviour that were restricted to the Pacific Ocean. The characteristic multi-pulsed structure of sperm whale clicks allows for estimation of whales' size from measurements of ...
Antunes, Ricardo
core  

Stallion sperm selection prior to freezing using a modified colloid swim-up procedure without centrifugation

, 2017
The aims of this study were to: 1) develop a new method for stallion sperm selection using a modified swim-up procedure through a colloid and 2) evaluate its impact in good quality eja-culates from bad freezers in comparison to methods involving ...
Dorado Martín, Jesús, Gosálvez Berenguer, Jaime, Hidalgo Prieto, Manuel, Morrel, Jane M, Diaz Jimenez, María, Consuegra González, Cesar, Ortiz Jaraba, Isabel, Pereira Aguilar, Blasa, Crespo Castejón, Francisco   +8 more
core   +1 more source

The Role of miRNAs in Chicken Immune Regulation and Prospects for Disease‐Resistant Breeding

Animal Research and One Health, EarlyView.
A schematic workflow illustrating the screening of disease‐resistant miRNAs and the generation of miRNA‐based disease‐resistant chickens via PGC‐mediated germline genome editing. ABSTRACT MicroRNAs (miRNAs) are emerging as pivotal regulators of the immune system, playing a decisive role in shaping disease resistance in chicken.
Qiangzhou Wang, Weiran Wu, Qingqing Cai, Jiaxing Wang, Qi Gao, Muhammad Iftikhar, Yulin Bi, Hao Bai, Lihong Gu, Guobin Chang, Shihao Chen   +10 more
wiley   +1 more source