Results 91 to 100 of about 504,977 (225)

Rheotaxis facilitates upstream navigation of mammalian sperm cells [PDF]

, 2014
A major puzzle in biology is how mammalian sperm maintain the correct swimming direction during various phases of the sexual reproduction process. Whilst chemotaxis may dominate near the ovum, it is unclear which cues guide spermatozoa on their long ...
Dunkel, Jörn, Raymond E Goldstein, Jörn Dunkel, Goldstein, Raymond E., Martyn Blayney, Kantsler, Vasily, Dunkel, Joern, Blayney, Martyn, Vasily Kantsler   +8 more
core   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source

Multi‐Platform Deployments of Low‐Cost Devices for Cetacean Passive Acoustic Monitoring

Remote Sensing in Ecology and Conservation, EarlyView.
Recent advances in affordable, user‐friendly devices offer new opportunities to overcome cost constraints of underwater passive acoustic monitoring (PAM) and expand acoustic data collection. In this study, we deployed low‐cost acoustic recorders and underwater cameras across a range of platforms in the Western Mediterranean, including fishing gear ...
Greta Jankauskaite, François Poisson, Irati Abascal, Javier Menéndez‐Blázquez, Clara Cánovas Pérez, Sofia Conti, Ricardo Sagarminaga, Juan Antonio Raga, David March   +8 more
wiley   +1 more source

Role of testicular fine‐needle aspiration in the modern male reproductive urologist′s practice

UroPrecision, EarlyView.
Abstract Background Azoospermia affects 10%–15% of infertile men, with non‐obstructive azoospermia (NOA) most often managed by microdissection testicular sperm extraction (mTESE). Despite AUA/ASRM guidelines recommending mTESE, some urologists employ testicular fine‐needle aspiration (TFNA) mapping as a diagnostic adjunct.
Parth Joshi, Jordan Kassab, Vivek Aslot, Richard Schoor   +3 more
wiley   +1 more source

Omics in Seminal Plasma: An Effective Strategy for Predicting Sperm Retrieval Outcome in Non-obstructive Azoospermia.

, 2021
Non-obstructive azoospermia (NOA) is a severe form of male factor infertility resulting from the impairment of sperm production. Surgical sperm retrieval followed by intracytoplasmic sperm injection (ICSI) is the only alternative for NOA patients to have
Nouri, Mohammad, Zarezadeh, Reza, Jafari-Gharabaghlou, Davoud, Ahmadi, Yadollah, Dittrich, Ralf, Nikanfar, Saba, Rastgar Rezaei, Yeganeh, Fattahi, Amir, Oghbaei, Hajar   +8 more
core   +1 more source

Quantification of steroid hormones in free‐ranging Apennine wolf Canis lupus italicus hair samples collected post‐mortem

Wildlife Biology, EarlyView.
After decades of dramatic reductions in their populations, Italian wolves have begun recolonizing parts of their historic range. This growth in populations can lead to potential conflicts with human activities, which remain the main cause of wolf mortality.
Ilaria Troisio, Carmela Musto, Nicola Acquisti Casi, Nadia Govoni, Giuseppe Merialdi, Domenico Ventrella, Alberto Elmi, Mauro Delogu, Maria Laura Bacci   +8 more
wiley   +1 more source

Clinical predictors of successful outcomes for couples with nonobstructive azoospermic male partners undergoing micro-TESE

Asian Journal of Andrology
Nonobstructive azoospermia (NOA) is the most challenging and complex clinical scenario for infertile men. Besides circumstances such as hypogonadotropic hypogonadism, surgical sperm retrieval is typically necessary, and microdissection testicular sperm ...
Parviz K Kavoussi, Nazim Gherabi, Ramadan Saleh   +2 more
doaj   +1 more source

Can Testicular Size Be a Predictive Factor for Successful Sperm Retrieval in Patients with Non Obstructive Azoospermia?

Gynecology Obstetrics & Reproductive Medicine, 2019
Objective: Non-obstructive azoospermia, defined as absence of spermatozoa in the ejaculate caused by impaired spermatogenesis, is the most severe cause of male infertility.
Omer yumusak, Mehmet Cinar, Serkan Kahyaoglu, Yasemin Tasci, Gul Nihal Buyuk, Aysegul Oksuzoglu   +5 more
doaj   +1 more source

Differential sperm expenditure reveals a possible role for post-copulatory sexual selection in a lekking moth [PDF]

, 2013
Cordes N, Yiğit A, Engqvist L, Schmoll T. Differential sperm expenditure reveals a possible role for post-copulatory sexual selection in a lekking moth. Ecology and Evolution.
Yiğit, Arzu, Tim Schmoll, Schmoll, Tim, Cordes, Nils ; https://orcid.org/, Arzu Yiğit, Leif Engqvist, Nils Cordes, Engqvist, Leif ; https://orcid.org/   +7 more
core   +1 more source

Reproductive Challenges of the Ageing Female: A Comprehensive Narrative Review

BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.
ABSTRACT Changes in societal norms over the last few decades have resulted in novel family planning trends, notably delayed childbearing and increased maternal age at the birth of the first child. Despite advances in reproductive medicine, ageing poses significant challenges.
Sofia Bitzika, Meletios P. Nigdelis, Angelos Daniilidis, Erich‐Franz Solomayer, Irene Lambrinoudaki, Efstratios M. Kolibianakis, Dimitrios G. Goulis   +6 more
wiley   +1 more source