Results 91 to 100 of about 19,844 (294)

Diving Deeper Into Mechanisms of Acrylamide‐Induced Toxicity: RNA Sequencing Reveals Transcriptomic Alteration and Retrotransposon Expression in Drosophila melanogaster

Environmental Toxicology, EarlyView.
ABSTRACT Given the inevitability of human and animal exposure to acrylamide, there is increasing concern regarding its potential health risks. While a number of molecular mechanisms have been proposed, the complexity of acrylamide toxicological pathways and interactions remains incompletely characterized.
Oluwabukola Mary Farodoye, Titilayomi Ayomide Otenaike, Daniela Moreira Mombach, Monica Medeiros Silva, Amos Olalekan Abolaji, Elgion Lucio Da Silva Loreto   +5 more
wiley   +1 more source

Data from: A cost for high levels of sperm competition in rodents: increased sperm DNA fragmentation

, 2016
Sperm competition, a prevalent evolutionary process in which the spermatozoa of two or more males compete for the fertilization of the same ovum, leads to morphological and physiological adaptations, including increases in energetic metabolism that may ...
Soler, Ana J., delBarco-Trillo, Javier, Garde, Julian, Garde, José Julián, Tourmente, Maximiliano, Soler, Ana, Roldan, Eduardo R. S., García-Álvarez, Olga   +7 more
core   +1 more source

Synergistic Toxicity of Low‐Concentration Metal Mixture on Male Rats: Reproductive, Renal, and Hepatic Effects

Environmental Toxicology, EarlyView.
ABSTRACT Mining plays a crucial role in economic development, but improper management can lead to severe environmental degradation. Particularly for iron ore, mining generates vast amounts of tailings often stored in unstable dams. This study aims to investigate the toxicological impacts of environmentally relevant concentrations of metals mixture ...
Kalinka Helóra Gomes de Almeida, Thalita Tofanin Sargiani D'Assumpção, Ana Priscila Gomes Silva, Carolina Rocha Moreira de Oliveira, Tailisi Hoppe Trevizani, Rubens Cesar Lopes Figueira, Lucas Buruaem Moreira, Juliana Elaine Perobelli   +7 more
wiley   +1 more source

Role of the epididymis in sperm competition

Asian Journal of Andrology, 2007
Although it is generally understood that the testes recruited kidney ducts for reproductive function during the evolution of vertebrates, little is understood of the biological significance of the adaptation. In the context of the evolution of the mammalian epididymis, this report provides evidence that a major role of the epididymis is to enhance a ...
Jones, Russell C, Dacheux, JL, Nixon, Brett, Ecroyd, Heath W   +3 more
openaire   +4 more sources

A cost for high levels of sperm competition in rodents: Increased sperm DNA fragmentation

, 2016
Spermcompetition, a prevalent evolutionary process inwhich the spermatozoa of two or more males compete for the fertilization of the same ovum, leads to morphological and physiological adaptations, including increases in energetic metabolism that may ...
Soler, Ana J., Garde, José Julián, Tourmente, Maximiliano, Josefa Soler, Ana, Delbarco-Trillo, Javier, Julián Garde, José, Roldán, Eduardo R. S., García-Álvarez, Olga   +7 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

Accessory gland size increases with sperm competition intensity in Cataglyphis desert ants

Frontiers in Ecology and Evolution
In many species, females have multiple mates, whose sperm compete for paternity. Males may subsequently invest in the increased production of sperm and/or seminal fluid. The latter is a complex mixture of proteins, peptides, and other compounds generated
Félicien Degueldre, Serge Aron
doaj   +1 more source

Male attractiveness is negatively genetically associated with investment in copulations

, 2011
In species with high male mating effort, there is a trade-off between mating effort spent in a current mating and resources left for future matings. Males are therefore expected to allocate resources prudently across successive matings.
Engqvist, Leif, Leif Engqvist, Engqvist, Leif ; https://orcid.org/   +2 more
core   +1 more source

Trade‐offs between surviving and thriving: A careful balance of physiological limitations and reproductive effort under thermal stress

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Balancing survival and reproduction presents a fundamental evolutionary challenge, especially in extreme and unpredictable environments. Thermoregulatory behaviour, in particular, imposes a costly trade‐off, as time spent maintaining optimal body temperature precludes ...
David L. Hubert, Ehren J. Bentz, Robert T. Mason   +2 more
wiley   +1 more source

Rival male relatedness does not affect ejaculate allocation as predicted by sperm competition theory.

PLoS ONE, 2008
When females are sexually promiscuous, the intensity of sperm competition for males depends on how many partners females mate with. To maximize fitness, males should adjust their copulatory investment in relation to this intensity. However, fitness costs
Melissa L Thomas, Leigh W Simmons
doaj   +1 more source