The Asian citrus psyllid (ACP), Diaphorina citri Kuwayama (Hemiptera: Liviidae), vector of citrus greening disease pathogen, Huanglongbing (HLB), is considered the most serious pest of citrus in the world. Prior molecular based studies have hypothesized a link between the D. citri in Iran and the USA (Florida). The purpose of this study was to collect morphometric data from D. citri populations...

the size composition, growth pattern, sex ratio and feeding habits of the blue swimming crab, portunus segnis from persian gulf in south of iran, was studied. sampling was performed by trawl net during a one- year period (july 2011 to may 2012) as processed 864 crabs was collection. the crabs carapace width ranged were from 7.5-17.5 cm for males and 7.0-16.5 cm for females. the crab carapace le...

The comb, as a secondary sexual character, is an important trait in chicken. Indicators of comb length (CL), comb height (CH), and comb weight (CW) are often selected in production. DNA-based marker-assisted selection could help chicken breeders to accelerate genetic improvement for comb or related economic characters by early selection. Although a number of quantitative trait loci (QTL) and ca...

to study yield and its components by the method of multivariate analysis, 25 genotypes of melon were sown on the basis of square lattice design of 2 replications in zahak agricultural research station. analysis of variance showed that there were significant differences among genotypes in some such characters as: fruit weight, width, and seed weight and yield. simple correlation coefficients sho...

abstract background: we aimed to describe morphological and morphometrical characteristics of fasciola spp. in livestock from ardabil province, northwest iran. methods: forty adult flukes were collected from different definitive hosts (cattle and sheep). previously specimens were identified as f. hepatica or f. gigantica based on pcr-rflp of the its-1 region with rsai enzyme.  we identified fas...

Abstract Although Carcinus maenas as a species is widely studied, research focusing on fecundity still scarce. The main objective of this study was to evaluate size-fecundity relationships across different lagoons and estuaries, along the Portuguese coast, understand how local environment affects reproductive patterns. Between 2019 2020, ovigerous females were collected from Southern (Ria Formo...

Effects of salinity on fertilization, embryonic stage, and early larval development and growth performances of short-spined white sea urchin, Salmacis sphaeroides were conducted under a controlled laboratory condition. The experiment was carried out with seven salinity treatments (15, 20, 25, 30, 35, 40 and 45 PSU), each of which was triplicated. Significantly highest fertilization success was ...

A new species of freshwater crab, Potamonautes danielsisp. n., is described from the southern region of the KwaZulu-Natal Province, South Africa. Potamonautes danielsi most closely resembles Potamonautes sidneyi which is re-described here, but can be distinguished by a suite of key morphological characters including carapace shape and width, slim pereopods, inflated propodi of the chelipeds, an...