Results 171 to 180 of about 1,138,325 (289)

Design and Implementation of a Deep Learning System to Analyze Bovine Sperm Morphology. [PDF]

Vet Sci
Sevilla F, Araya-Zúñiga I, Méndez-Porras A, Alfaro-Velasco J, Jiménez-Delgado E, Silvestre MA, Molina-Montero R, Roldan ERS, Valverde A.   +8 more
europepmc   +1 more source

Early‐Life Telomere Length Negatively Covaries With Brood Size and Father Age, and Predicts Long‐Term Survival in Male Barn Swallows (Hirundo rustica)

Integrative Zoology, EarlyView.
In barn swallows, nestlings raised in larger broods or by older social fathers have shorter telomeres, and those with longer telomeres tend to live longer, suggesting that early‐life conditions may shape individual lifespan through telomere dynamics. ABSTRACT Parental decisions on breeding, such as brood size and timing of reproduction, influence the ...
Andrea Novelli, Manuela Caprioli, Roberto Ambrosini, Alessandra Costanzo, Diego Rubolini, Marco Parolini, Andrea Romano   +6 more
wiley   +1 more source

Effectiveness of short-term, high-intensive, WHO laboratory standard-based training in sperm morphology assessment: evidence from a national program in China. [PDF]

Asian J Androl
Zhou F, Guo Y, Wang XW, Qiu S, Xu JF, Zhao HB, Gu YQ, Fu LL, Lu WH.   +8 more
europepmc   +1 more source

After All, Size Does Matter: Size and Trachemys Scripta Reproduction Traits at the Western Limit of Its European Distribution

Integrative Zoology, EarlyView.
‐ Female T. scripta exhibit a clear size‐dependent reproductive investment, where larger plastron length is positively associated with all key reproductive traits. ‐ Female T. scripta reach sexual maturity at a plastron length of approximately 15–18 cm. ABSTRACT In invasive species, reproductive success may determine invasion outcomes and influence the
João Rato, Shaquille Matthys, Pedro Brandão, Olivia Hartmann, Stefano Canessa, Pedro Anastácio, Filipe Banha   +6 more
wiley   +1 more source

Unusual Sperm Morphology in Two Sedentary Songbird Species. [PDF]

Ecol Evol
Cramer ERA, Grønstøl G, Benham PM, Cicero C, Bowie RCK, Tobiansky DJ, Lifjeld JT.   +6 more
europepmc   +1 more source

Testicular histopathology and its association with germ cell numbers, serum concentrations of reproductive hormones, and semen quality

Andrology, EarlyView.
Abstract Background It is well‐established that spermatogenesis, semen quality, and reproductive hormones are interlinked. It is, however, less well‐described how various specific testicular histopathologies are linked to reproductive hormones and semen quality.
Gülizar Saritas, Nina Mørup, Trine H. Johannsen, Anders Juul, Lise Aksglaede, Sofia B. Winge, Kristian Almstrup   +6 more
wiley   +1 more source

The use of deidentified organ donor testes for research

Andrology, EarlyView.
Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova, Marnie W. Skinner, Juliana I. Candelaria, Stephen R. Wellard, Philip W. Jordan   +4 more
wiley   +1 more source

Unveiling the capabilities of vision transformers in sperm morphology analysis: a comparative evaluation. [PDF]

PeerJ Comput Sci
Aktas A, Serbes G, Ilhan HO.
europepmc   +1 more source

Semen quality in patients with testicular cancer is associated with age and with greatly elevated levels of beta human chorionic gonadotropin

Andrology, EarlyView.
Abstract Background Poor semen quality is a well‐known feature in patients with testicular germ cell tumours (GCTs) at the time of diagnosis but the underlying biological reasons are incompletely understood. Objectives This study aimed to identify GCT‐specific clinical factors that are involved with poor semen quality in GCT patients.
Klaus‐Peter Dieckmann, Johanna Hochmuth‐Tisch, Andrea Salzbrunn, Cord Matthies, Kathrein von Kopylow, Marta Godlewska, Christian Wülfing, Uwe Pichlmeier, Armin Soave, Christian Guido Ruf   +9 more
wiley   +1 more source

Deep-learning based model for sperm morphology assessment using the SMD/MSS dataset. [PDF]

Future Sci OA
Abdelkefi O, Maalej R, Rebai T, Sellami A, Daoud S.   +4 more
europepmc   +1 more source