The present study investigated the existing relationship between computer assisted semen motility parameters and gametes motility duration, known to express semen quality and fertilizing capacity in fish. The objective was particularly to identify computer aided semen analysis (CASA) parameters that could be used as potential fertility predictors. Semen samples were collected from the beginning...

There are errors in Fig 3, " Effect of land-use and season on Eco-Physiological (EP) index of cul-turable bacteria (A) and diversity indices from CD-DGGE profiles (B). " Please see the corrected Fig 3 here. open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the origin...

Abstract Active scent marking with urine has been described in a number of mammal species, including felids. In Eurasian lynx ( Lynx ), plays role intra-sexual competition and territory defence as well attracting sexual partners during the mating season. Marking is most frequent season least period when females give birth lactate. Males generally mark more frequently than resident animals dispe...

1. Trade-offs between reproduction and growth are central assumptions of life-history theory, but their implications for sexual size dimorphism (SSD) are poorly understood. 2. Adult male Yarrow's spiny lizards Sceloporus jarrovii average 10% larger than adult females. In a low-altitude (1700 m) population, this SSD develops because males grow more quickly than females during the first year of l...

Animals have to adjust their physiology to seasonal changes, in response to variation in food availability, social tactics and reproduction. I compared basal corticosterone and testosterone levels in free ranging striped mouse from a desert habitat, comparing between the sexes, breeding and philopatric non-breeding individuals, and between the breeding and the non-breeding season. I expected di...

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Abstract Investing in the current reproduction requires diverting energy resources from other metabolic functions, which may compromise future and lifespan. To solve this trade-off, an individual consider its labile state to decide how much invest reproduction. We tested experimentally whether “state quality” of male rock lizards influences their reproductive strategies. improve nutritional sta...

Competition among physiological processes for limited resources often results in trade-offs. Key among these processes is reproduction and immune function, and optimizing both appears to be difficult. To test the hypothesis that the resource demands of reproduction compromise immune function, we measured rates of wound healing, an integrated measure of innate immunity, across different reproduc...

Long-lived understory herbs experience a highly dynamic forest over space and time, yet can persist for more than a century. To understand how these populations persist, we examined effects of forest age and disturbance on potential sexual reproduction and clonal growth in the sexually labile perennial, Arisaema triphyllum. Potential sexual reproduction female:male ratio was significantly great...