Titlebook: Studies on Large Branchiopod Biology and Aquaculture; Denton Belk,Henri J. Dumont,N. Munuswamy Book 1991 Springer Science+Business Media D

发芽

Multispecies coexistence of branchiopods (Anostraca, Notostraca & Spinicaudata) in temporary ponds o existence of a geographical area with a particularly diversified number of species. Over a few hectares, 11 species, among the 18 known in Morocco, are present. While most of them are usually allopatric and belong to distinct associations, indicative of particular ecological and climatic conditions

Alpha-Cells

Concrete

Uptake of lead, cadmium and zinc by the fairy shrimp, , (Crustacea: Anostraca)mg kg. wet weight) in the animals were determined at 2-day intervals by digestion in nitric acid followed by atomic absorption analysis. The shrimp were also subjected to 0.1 mg 1. media of Cd and Zn, separately..Uptake rates by the fairy shrimp for the three metal ions at 0.1 mg 1. were: 0.111, 0.0

commensurate

污秽

Sex ratio variation in female-biased populations of Notostracansbit sex-ratio polymorphism. One category of females (monogenics) produces only female offspring; the second category (amphigenics) produces clutches with a sex ratio of 3 females: 1 male. The relative proportions of the two categories of females varies significantly between populations and is correl

宠爱

Some aspects of , biology affected by cestode parasitismer survival of parasitized animals suggests that parasitism is not pathogenic. The most dramatic effect was host castration. Parasitized individuals showed higher total lipid levels, probably linked to carotenoid pigments conveying a red color to parasitized shrimps.

Vldl379

Intact

Influence of temperature on hatching of eggs of , (Crustacea, Notostraca)monstrated. Time required for successful hatching was shortest at 20 °C, with no discernible difference between 17 °C and 25 °C. Both short- and long-term survival of populations of the species appears to be fostered by the adaptive response to temperature shown by the eggs.

充满装饰

污秽