منابع مشابه
Factors influencing male mating behaviour inGambusia affinis (Baird & Girard) with a coercive mating system
The effects of male and female body size, and correlated characteristics, on male mating behaviour were investigated in the western mosquitofish Gambusia affinis. Because larger females typically have larger broods in Gambusia sp., it was predicted that males would attempt more copulations with larger females. Two-way ANOVA showed that female body size was a significant predictor of male mating...
متن کاملCharacterization of Na+ uptake in the endangered desert pupfish, Cyprinodon macularius (Baird and Girard)
This study provided an initial characterization of Na(+) uptake in saline freshwater by the endangered pupfish, Cyprinodon macularius. This species occurs only in several saline water systems in the southwestern USA and northern Mexico, where salinity is largely controlled by water-management practices. Consequently, understanding the osmoregulatory capacity of this species is important for the...
متن کاملRepeatability of Individual Differences in Locomotor Performance and Body Size During Early Ontogeny of the Lizard Sceloporus Occidentalis (Baird & Girard)
The demonstration of repeatability of relative body size and of locomotor performance in growing lizards is relevant to the functional and genetic basis of these traits as well as to an understanding of how they are influenced by natural selection. Relative locomotor performance of hatchlings was strongly repeatable among body temperatures (28, 33 and 370C). We estimated the repeatabilities of ...
متن کاملCytogenetic divergence in two sympatric fish species of the genus Astyanax Baird and Girard, 1854 (Characiformes, Characidae) from northeastern Brazil
The fish genus Astyanax is widespread throughout the Neotropical region and is one of the most species-rich genera of the Characiformes. Cytogenetic studies of Astyanax have revealed marked intra- and interspecific diversity, with the identification of various species complexes. In this report, we describe the karyotypic structure of two sympatric species of Astyanax (Astyanax sp. and Astyanax ...
متن کاملIncidence of coliform bacteria in the intestinal tract of Gambusia affinis holbrooki (Girard) and in their habitat water.
were measured on nutrient agar plates. In all three species, 0.1, 0.5, and 1.0% lithium chloride progressively increased the colony sizes. On the other hand, 2.0, 3.5, and 5.0% LiCl progressively reduced the colony diameters, resulting in the isolation of predominantly small-colony variants (Table 1). It is probable that the higher concentrations of LiCl selected small-colony variants from the ...
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ژورنال
عنوان ژورنال: Baghdad Science Journal
سال: 2005
ISSN: 2411-7986,2078-8665
DOI: 10.21123/bsj.2.1.1-8