Helmintos oxiuridae parasitos de Iguana iguana (Squamata, Lacertilia, Iguanidae) procedentes do Brasil

Abstract

Comunicação

Morphometrics and molecular analysis ofOzolaimus linstowin. sp. (Oxyuroidea: Pharyngodonidae) from the green lizardIguana iguana

“…Ozolaimus linstowi n. sp. described herein was found in I. iguana which was reported previously as a host for O. megatyphlon and O. cirratus (Linstow, 1906; Leussink, 1958; Munakata et al , 1999; Leukopoulos et al , 2007; Breves et al , 2011). The presence of a slender, cylindrical pharynx not divided into sections in O. linstowi n. sp.…”

“…Light microscope photographs show the presence of a narrow pharynx with anterior fusiform swelling in O. cirratus and a two-part pharynx of O. megatyphlon , with an anterior sac-like part and posterior slender one; parts differ in optical density, unlike in O. cirratus . It is also worth noting that the illustrations of pharynx morphology for O. cirratus and O. megatyphlon found in Leussink (1958) and Inglis et al (1960) contradict that of Breves et al (2011).…”

“…Inglis et al (1960) assumed that differences in pharynx morphology were mostly artefacts caused by fixation, while Leussink (1958) illustrated pronounced differences in the pharynx shape, even for the morphologically close O. megatyphlon and O. cirratus , often found parasitizing the same host specimen. The recent communication of Breves et al (2011) clearly illustrates the presence of two unequivocally different morphological shapes of the pharynx in O. cirratus and O. megatyphlon from I. iguana (Brazil). Light microscope photographs show the presence of a narrow pharynx with anterior fusiform swelling in O. cirratus and a two-part pharynx of O. megatyphlon , with an anterior sac-like part and posterior slender one; parts differ in optical density, unlike in O. cirratus .…”

“…In the author's opinion, pharynx morphology is indeed an important diagnostic feature, and morphological differences shown by Breves et al (2011) indicate the existence of two (or three?) possesses a narrow, slender pharynx; however, minor changes in its width caused by muscle contracture due to fixation have been observed in some specimens.…”

Nematodes associated with Iguana iguana (Linnaeus, 1758) (Squamata, Iguanidae) in Semi-arid areas of Northeastern Brazil

“…Parasitological investigations into these iguanids have shown that they host a diverse group of parasites, including nematodes (Breves et al, 2011;Lopes et al, 2006;Sarmiento et al, 1999;Freitas and Lent, 1937;Dyer et al, 1999), trematodes (Ávila and Silva, 2011;Freitas and Lent, 1937), cestodes (Ávila and Silva, 2010), and mites and ticks (Dantas-Torres et al, 2008).…”