Results 31 to 40 of about 357,614 (293)
Neuronal Control of Swimming Behavior: Comparison of Vertebrate and Invertebrate Model Systems [PDF]
, 2011 Swimming movements in the leech and lamprey are highly analogous, and lack homology. Thus, similarities in mechanisms must arise from convergent evolution rather than from common ancestry.
Buchanan, James T. +3 more
core +2 more sources
PLoS ONE, 2012 BackgroundSeveral teleost species have evolved anterior extensions of the swim bladder which come close to or directly contact the inner ears. A few comparative studies have shown that these morphological specializations may enhance hearing abilities ...
Tanja Schulz-Mirbach +2 more
doaj +1 more source
Will souped up salmon sink or swim? [PDF]
Nature, 2000 A company in Massachusetts is seeking permission to market salmon genetically modified to grow faster than normal. Tony Reichhardt explores the potential ecological risks, should the fish escape from salmon farms.
openaire +1 more source
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2015 Neste estudo, 67 ejaculados foram avaliados, antes e depois da técnica de swim-up, em relação à qualidade seminal e à presença do CAEV. Das 67 amostras testadas por PCRn, antes do swim-up, 47 (70,15%) foram positivas para o DNA pró-viral.
A.A. Ávila +7 more
doaj +1 more source
The role of cross-training in swim-related injuries in master’s swimmers [PDF]
, 2019 Orthopedic injuries often interfere with Masters athletes’ pursuit of better performance and might place economic burden on these athletes. PURPOSE: We determined if the incidence of injuries increases with age and the economic burden associated with ...
Baker, Brett Donovan, Jr.
core +1 more source
Dramatic effect of pop-up satellite tags on eel swimming [PDF]
Naturwissenschaften, 2011 The journey of the European eel to the spawning area in the Sargasso Sea is still a mystery. Several trials have been carried out to follow migrating eels with pop-up satellite tags (PSATs), without much success. As eels are very efficient swimmers, tags likely interfere with their high swimming efficiency.
Burgerhout, Erik +5 more
openaire +2 more sources
Effect of the pH in the enrichment of X or Y sex chromosome-bearing sperm in bovine [PDF]
Veterinary World, 2019 Background and Aim: Studies have shown that the pH of the vagina during the course of fertilization may influence the migration of X- and Y-bearing spermatozoa and thus leading to skewness in the sex of the offspring. Hence, this study was carried out to
Nidhi P. Raval +3 more
doaj +1 more source
On the distribution and swim pressure of run-and-tumble particles in confinement [PDF]
, 2015 The spatial and orientational distribution in a dilute active suspension of non-Brownian run-and-tumble spherical swimmers confined between two planar hard walls is calculated theoretically. Using a kinetic model based on coupled bulk/surface probability
Alonso-Matilla, Roberto +2 more
core +1 more source
Evaluation of ram semen motility by a swim-up technique [PDF]
Reproduction, 1993 The turbidity formed as ram spermatozoa swam up into a clear medium was measured using a colorimeter and this was used as an objective index of sperm motility. Wavelengths of 470-475 nm yielded higher optical densities (OD) than did 520-640 nm. The recommended distance between the light beam and semen-medium interface, and operation temperature were 5 ...
P, Suttiyotin, C J, Thwaites
openaire +2 more sources
Effects of bovine spermatozoa preparation on embryonic development in vitro
Reproductive Biology and Endocrinology, 2006 The aim of our research was to examine the ability of density gradient preparation BoviPure® and swim up method on bull sperm separation and in vitro embryo production (IVP) systems.
Cergolj Marijan +5 more
doaj +1 more source