A field trial was carried out to study the effect of lambdacyhalothrin on Anopheles maculatus in trap huts in Jeram Kedah, Negeri Sembilan, Malaysia. Two trap huts were built, of which one was sprayed with lambdacyhalothrin at a dosage of 25 mg ai/m2 and the other served as control. Eight collectors commenced collecting mosquitos from 1900 to 2400 hours, two each indoors and outdoors. Bioassay ...

Five New World species of Chrysotus Meigen are redescribed, four of them herein transferred from Diaphorus Meigen: C. angustifrons (Robinson), comb.nov., C. maculatus (Parent), comb.nov. (= D. maculipennis Robinson), C. robustus (Robinson), comb.nov., C. spectabilis (Loew) and C. wirthi (Robinson), comb.nov. The female of C. maculatus is described for the first time. Terminalia of both males an...

Hemibarbus maculatus is a globally important species for its value in fisheries and aquaculture. There relatively little information available about this species' sexual development genes. Therefore, study, we used the technology of high-throughput RNA sequencing (RNA-seq), to investigate if ovary testis' differently expressed genes (DEGs) during sex differentiation H. maculatus. Our results re...

Ten polymorphic microsatellite markers (five tetra-, one compound tetra-, one octa- and three dinucleotides) were isolated and characterized for Galaxias maculatus, a fish species widely distributed in the Southern Hemisphere. Markers were tested in 89 individual samples from a single location and the number of alleles ranged between 2 and 28. Observed and expected heterozygosities ranged from ...

The cowpea weevil, Callosobruchus maculatus, is a major threat to stable production, especially in storage, and has been reported facilitate postharvest losses grains. Host resistance suggested as the best control method but with conflicting knowledge on source of resistance. Hence, study seeks evaluate seed storage proteins (SSPs) coat compounds (SCCs) associated tolerance C. maculatus. SSPs S...

We have isolated two major histocompatibility complex (MHC) class II B genes from the inbred fish strain Xiphophorus maculatus Jp 163 A. We mapped one of these genes, designated here as DXB, to linkage group III, linked to a malic enzyme locus, also syntenic with human and mouse MHC. Comparison of genomic and cDNA clones shows the gene consists of six exons and five introns. The encoded beta1 d...

Interspecific resource competition is expected to select for divergence in resource use, weakening interspecific relative to intraspecific competition, thus promoting stable coexistence. More broadly, because interspecific competition reduces fitness, any mechanism of interspecific competition should generate selection favoring traits that weaken interspecific competition. However, species also...

The enzymatic activities involved in the digestion of proteins and carbohydrates were compared among three organs of the digestive track of two Siluriformes fish species, and between two areas: a reservoir, and an area downriver of it. Our aim was to test the hypothesis that the digestive organs of species with varied feeding habits have different enzymatic activities, and that the enzymatic ac...