PMID- 17992690
OWN - NLM
STAT- MEDLINE
DCOM- 20080429
LR  - 20080226
IS  - 1059-910X (Print)
IS  - 1059-910X (Linking)
VI  - 71
IP  - 3
DP  - 2008 Mar
TI  - Ultrastructural study on the body surface of the acanthocephalan parasite 
      Dentitruncus truttae in brown trout.
PG  - 230-5
AB  - Scanning electron microscope (SEM) investigations on the holdfast elements, 
      proboscis hooks, and trunk spines of Dentitruncus truttae (Acanthocephala, 
      Palaeacanthocephala), an endoparasite of Salmo trutta (brown trout), provide more 
      data about the surface of these taxonomic relevant structures. In both 
      acanthocephalan sexes, the fully everted cylindrical proboscis possessed 18 
      longitudinal rows of hooks with 18 hooks per row (rarely 19-20). Hook length 
      varied according to position on the proboscis; apical hooks were 40-52 microm 
      long, middle hooks were 31.7-36.6 microm, and basal hooks were 38.1-40 microm. 
      Starting from the anterior end of the metasoma, numerous cuticular spines 
      (26.7-30 microm in length) were visible and their number progressively decreased 
      posteriorly. SEM observations of D. truttae hooks and spines revealed the 
      presence of many surface striations on each proboscis hook. These surface 
      striations were absent from trunk spines. From the base of the hook, the 
      striations ran parallel toward the point of convergence. Additionally, survey of 
      longitudinal and transversal sections of the hook using transmission electron 
      microscope confirmed that the hook surface was not smooth. SEM comparison with 
      the hooks of several palaeacanthocephalan species, as well as with the hooks of 
      species belonging to Eoacanthocephala and Polyacanthocephala, indicated that the 
      striations are currently exclusive to D. truttae proboscis hooks.
CI  - (c) 2007 Wiley-Liss, Inc.
FAU - Dezfuli, Bahram S
AU  - Dezfuli BS
AD  - Department of Biology and Evolution, University of Ferrara, 44100 Ferrara, Italy. 
      dzb@unife.it
FAU - Lui, Alice
AU  - Lui A
FAU - Giari, Luisa
AU  - Giari L
FAU - Boldrini, Paola
AU  - Boldrini P
FAU - Giovinazzo, Giancarlo
AU  - Giovinazzo G
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Microsc Res Tech
JT  - Microscopy research and technique
JID - 9203012
SB  - IM
MH  - Acanthocephala/*anatomy & histology/*ultrastructure
MH  - Animals
MH  - Female
MH  - Fish Diseases/*parasitology
MH  - Helminthiasis, Animal/*parasitology
MH  - Host-Parasite Interactions
MH  - Male
MH  - Microscopy, Electron, Scanning
MH  - Trout/*parasitology
EDAT- 2007/11/10 09:00
MHDA- 2008/04/30 09:00
CRDT- 2007/11/10 09:00
PHST- 2007/11/10 09:00 [pubmed]
PHST- 2008/04/30 09:00 [medline]
PHST- 2007/11/10 09:00 [entrez]
AID - 10.1002/jemt.20543 [doi]
PST - ppublish
SO  - Microsc Res Tech. 2008 Mar;71(3):230-5. doi: 10.1002/jemt.20543.