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Thelytokous parthenogenesis in the fungus-gardening ant Mycocepurus smithii (Hymenoptera: Formicidae)
(2009-08-26)
The general prevalence of sexual reproduction over asexual reproduction among organisms testifies to the evolutionary benefits of recombination, such as accelerated adaptation to changing environments and elimination of ...
Thelytokous parthenogenesis in the fungus-gardening ant Mycocepurus smithii (Hymenoptera: Formicidae)
(2009-08-26)
The general prevalence of sexual reproduction over asexual reproduction among organisms testifies to the evolutionary benefits of recombination, such as accelerated adaptation to changing environments and elimination of ...
Male reproductive strategies in two species of spider crabs, Leurocyclus tuberculosus and Libinia spinosa
(Elsevier Gmbh, 2020-09)
Reproductive strategies vary according to season length, individual reproductive traits, and factors associated with the social context such as density and sex ratio of the individuals. The social context predicts the ...
A New Miniature Characid (Ostariophysi: Characiformes: Characidae), with Phylogenetic Position Inferred from Morphological and Molecular Data
(2013-01-02)
Erythrocharax altipinnis is described from the Serra do Cachimbo, Pará, Brazil. The new taxon is distinguished from all of the Characidae genera by having the pelvic bones firmly attached through the isquiatic processes; ...
Female-driven intersexual coevolution in beetle genitalia
(Wiley Blackwell Publishing, Inc, 2020-07)
Genital coevolution is a pervasive phenomenon as changes in one sex tend to impose fitness consequences on the other, generating sexual conflict. Sexual conflict is often thought to cause stronger selection on males due ...
The number of reproductive workers in highly eusocial Hymenoptera: monogyny and monandry
(FUNPEC-EDITORA, 2009)
Haplodiploidy results in relatedness asymmetries between colony members of highly eusocial Hymenoptera. As a consequence, queen and reproductive workers are more related to their own sons than to each other's male offspring. ...
High concentrations of glucose reduce the oxidative metabolism of dog neutrophils in vitro
(2013-02-06)
Background: Dogs are commonly affected by hyperglycemic conditions. Hyperglycemia compromises the immune response and favors bacterial infections; however, reports on the effects of glucose on neutrophil oxidative metabolism ...
High concentrations of glucose reduce the oxidative metabolism of dog neutrophils in vitro
(2013-02-06)
Background: Dogs are commonly affected by hyperglycemic conditions. Hyperglycemia compromises the immune response and favors bacterial infections; however, reports on the effects of glucose on neutrophil oxidative metabolism ...
Aggressive behavior of pregnant females of Akodon azarae: a strategy to reduce infanticide risk of their youngs next to be born?Comportamiento agresivo de las hembras preñadas de Akodon azarae: ¿una estrategia para reducir el riesgo de infanticidio de sus crías próximas a nacer?
(Unidad de Zoología y Ecología Animal, Instituto Argentino de Investigación de Las Zonas Aridas, Cricyt, Conicet, 2019-12)
El infanticidio por parte de machos es una estrategia adaptativa que incrementa el éxito reproductivo del agresor al aumentar sus posibilidades de reproducirse prontamente con la víctima. Así, se espera que en las hembras ...
Suppression subtractive hybridization analysis reveals expression of conserved and novel genes in male accessory glands of the ant Leptothorax gredleri
(BIOMED CENTRAL LTD, 2010)
Background: During mating, insect males eject accessory gland proteins (Acps) into the female genital tract. These substances are known to affect female post-mating behavior and physiology. In addition, they may harm the ...