three species belonging to three genera of the family tylenchidae, namely, cephalenchus leptus, eutylenchus excretorius, and lelenchus leptosoma were discovered as first reports for iran's nematode fauna. they were characterized by morphological, morphometric and molecular phylogenetic studies. the two latter genera are new for iran. iranian population of cephalenchus leptus is characterized by...

in order to identify the plant parasitic nematodes associated with polianthes tuberosa in dezful regions, iran, 300 soil and root samples were collected from different parts of the region, during 2012-2014. the samples were washed and the nematodes were extracted by centrifugal flotation technique. the nematodes were fixed and transferred to glycerin, and then the permanent slides of the nemato...

Filenchus flagellicaudatus n. sp. and Lelenchus schmitti n. sp. are described from Pepe'opae bog on Molokai, Hawaii. Filenchus flagellicaudatus n. sp. is distinguished from all other Filenchus spp. by stylet length (10 microm), robust metacorpus, elongated basal bulb, and extraordinarily long, whip-like tail (c = 2.6, c' = 31.8). Lelenchus schmitti n. sp. differs from other Lelenchus spp. by it...

BACKGROUND The genus Aegialoalaimus de Man, 1907 includes 12 nominal species, of which three species are considered valid, two species were transferred to other genera and seven species have uncertain taxonomic status. NEW INFORMATION New species, Aegialoalaimus bratteni sp. n. was found in Skagerrak off the west coast of Sweden. It is particularly characterized by the 1.5-1.8 mm long body, s...

The climbing crab Sesarma leptosoma colonizes the mangrove roots and canopy of East African mangrove swamps, an intricate three-dimensional habitat in which it orients itself visually. To ascertain if vision helps this tree crab to detect dangers such as predators, we used dummy objects: (1) a preserved specimen of its predator, the crab Epixanthus dentatus in its typical ambush posture; (2) a ...

Mating system variability is known to exist between and within species, often due to environmental influences. An open question is whether, vice versa, similar environmental conditions entail congruent mating behavior, for example in terms of multiple paternity, in species or populations sharing largely comparable breeding modes. This study employed microsatellite markers to investigate the inc...

The tegumental ultrastructure of juvenile and adult Himasthla alincia (Digenea: Echinostomatidae) was observed by scanning electron microscopy. One-, 5- (juveniles) and 20-day-old worms (adults) were harvested from chicks experimentally fed metacercariae from a bivalve, Mactra veneriformis. The juvenile worms were elongated and curved ventrally. The head crown bore 31 collar spines, arranged in...