The ultimate stadium larva of Neuraeschna claviforcipata is described and illustrated based on an F-0 exuvia of a reared female from northern Amazonas State, Brazil. This larva differs from the other two known larvae of the genus in lacking the spiny lateral prominence of the mandible, and in having only a short spine each side of the median cleft of the prementum; labium is shorter and cercus ...

Figure 1. The giant tubeworm Riftia pachyptila. (A) Dense aggregation at a hydrothermal vent of the East Pacific Rise. (B) Life cycle with aposymbiotic phase from fertilized egg to settled larva (blue), and symbiotic phase from larva in metamorphosis to adult (red). Infection of Endoriftia (red) from a free-living microbial community occurs in the larva. (C) Relationships of siboglinids outlini...

An anisakid nematode larva found in cod sold in the state of Minas Gerais, Brazil was studied by light and scanning electron microscopy and by a molecular approach. Mitochondrial cytochrome c-oxidase subunit 2 (mtDNA cox-2), 28S rRNA and ITS1, 5.8S and ITS2 regions were amplified using the polymerase chain reaction and sequenced to evaluate the phylogenetic relationships of the larva. The genet...

The nurse cell-parasite complex of Trichinella spiralis is unlike anything else in Nature. It is derived from a normal portion of striated skeletal muscle cell and develops in a matter of 15 to 20 days after the larva invades that cell type. What are the molecular mechanisms at work that result in this unique relationship? Here, Dickson Despommier presents a hypothesis to account for its format...

I N addition to the principal imaginal discs (cephalic, labial, wing, haltere, leg and genital), the larva in Cyclorrhapha carries as discrete components the rudiments of the imaginal segmental abdominal hypodermis, salivary glands, fore-, midand hind-gut, lateral cerebral ganglia and segmental tracheal system (Snodgrass, 1924; Bodenstein, 1950; Shatoury, 19566; Anderson, 1964, etc.). The embry...

OBJECTIVE To determine the efficacy of combination treatment of Albendazole along with liquid nitrogen in cutaneous larva migrans. STUDY DESIGN Quasi-experimental study. PLACE AND DURATION OF STUDY Abbasi Shaheed Hospital and The Aga Khan Hospital, Karachi, from December 2008 to December 2010. METHODOLOGY Eighteen cases of cutaneous larva migrans were collected and divided into two groups...

Cutaneous larva migrans is a pruritic dermatitis due to the inoculation of helminths larvae in the skin, and it often occurs in children in tropical and subtropical areas. The authors describe an atypical case of cutaneous larva migrans in a 11 year-old child with scalp involvement, an unusual topography for this lesion.

In this study, we report the rearing of Brachyopa panzeri Goffe, 1945 from larva and elucidate its life circle with a duration pupal stage for first time. We describe puparium B. which morphology was unknown prior to current study. The study showed discrepancies between our observations original description. These allow us redescribe larva, explaining uncertainties that have existed in literatu...

two snail species belonging to genus lymnaea, l.auricularia and l.gedrosiana, were collected from 6 different districts of shadegan area of khoozestan. eight percent of the total collections of the snails revealed the occurrence of larva in them. the prevalence of larva within the snails varied in different districts may be due to different geoclimatic conditions and availability of fresh water...

To determine whether increased migration is associated with an increase in incidence of toxocariasis (visceral larva migrans), we analyzed clinical data obtained from immigrants from Latin America. Although infection with Toxocara sp. roundworm larvae is distributed worldwide, seroprevalence is highest in tropical and subtropical areas.