Results 111 to 120 of about 19,844 (294)
Testes size, testosterone production and reproductive behaviour in a natural mammalian mating system [PDF]
, 2011 1. Testosterone (T) is a key mediator in the expression of numerous morphological and behavioural traits in mammals, but the factors underlying individual variation in circulating T levels are poorly understood. 2.
Monfort, Steven L. +11 more
core +1 more source
Extraocular Photoreception in Optic Lobes, Suckers, and Skin of Octopus vulgaris
Integrative Zoology, EarlyView.Evidence of extra‐ocular photoreception in Octopus vulgaris (a) Diagram of the O. vulgaris different tissues considered: SPB, sucker proximal big; SPL, sucker proximal large; SM, sucker medium; SD, sucker distal; SK, skin; OL, optic lobes; RT, retina; (b‐d) Gene expression analysis of Ov‐GRK1 (red), Ov‐retinochrome (green), Ov‐rhodopsin (blue) mRNA ...
Valeria Maselli +7 more
wiley +1 more source
, 2008 Some portions of this electronic text have been removed owing to copyright restrictionsThe European earwig exhibits a remarkable male-dimorphism in forceps morphology that is associated with alternative reproductive tactics under the control of a ...
Brown, Gordon S.
core
Integrative Zoology, EarlyView.Sexual cannibalism (SC), where one mating partner consumes the other in the context of mating, is especially prevalent among spiders. However, the evolution of SC in spiders is still not fully understood. We review key hypotheses for SC and explore how female‐initiated SC has driven the evolution of various male counter‐adaptations to mitigate its ...
Simona Kralj‐Fišer +3 more
wiley +1 more source
Journal of Biological Research - Thessaloniki, 2019 Background Postcopulatory sexual selection is very important in species with reproductive strategies that involve multiple mating and prolonged sperm storage.
Alexandra Staikou +1 more
doaj +1 more source
<i>Drosophila</i> Arc1 is not required for male fertility or sperm competition success. [PDF]
MicroPubl Biol, 2023 Gordon K +6 more
europepmc +1 more source
Bayesian Sperm Competition Estimates
Genetics, 2003 Abstract We introduce a Bayesian method for estimating parameters for a model of multiple mating and sperm displacement from genotype counts of brood-structured data. The model is initially targeted for Drosophila melanogaster, but is easily adapted to other organisms. The method is appropriate for use with field studies where the number
Beatrix, Jones, Andrew G, Clark
openaire +2 more sources
Allergy, EarlyView.ABSTRACT In the last decades, critical advancements in research technology and knowledge on disease mechanisms steered therapeutic approaches for chronic inflammatory diseases towards unprecedented target specificity. For allergic and chronic lung diseases, biologic drugs pioneered this goal, acquiring on the way—through the clinical use of monoclonal ...
F. Roth‐Walter +20 more
wiley +1 more source
Ecology and Evolution, 2018 A mismatch in synchrony between male and female gamete release in external fertilizers can result in reduced or failed fertilization, sperm competition, and reduced paternity.
Magnus B. Brattli +3 more
doaj +1 more source
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 +9 more
wiley +1 more source