Invasive swimbladder parasite Anguillicoloides crassus: infection status 15 years after discovery in wild populations of American eel Anguilla rostrata

2014 ◽  
Vol 107 (3) ◽  
pp. 199-209 ◽  
Author(s):  
JL Hein ◽  
SA Arnott ◽  
WA Roumillat ◽  
DM Allen ◽  
I de Buron
Keyword(s):  
Anguilla Rostrata ◽  
Infection Status ◽  
Wild Populations ◽  
American Eel ◽  
Anguillicoloides Crassus

scholarly journals Infection of newly recruited American eels (Anguilla rostrata) by the invasive swimbladder parasite Anguillicoloides crassus in a US Atlantic tidal creek

2015 ◽  
Vol 73 (1) ◽  
pp. 14-21 ◽  
Author(s):  
Jennifer L. Hein ◽  
Isaure de Buron ◽  
William A. Roumillat ◽  
William C. Post ◽  
Allan P. Hazel ◽  
...  
Keyword(s):  
Tidal Creek ◽  
Parasite Prevalence ◽  
Anguilla Rostrata ◽  
American Eel ◽  
Glass Eel ◽  
The Usa ◽  
Advanced Stages ◽  
Glass Eels ◽  
American Eels ◽  
Anguillicoloides Crassus

Abstract Little is known about the infection status of glass eel and elver stages of the American eel Anguilla rostrata by the invasive swimbladder parasite Anguillicoloides crassus. This study examined infection by adult and larval A. crassus in glass eels (n = 274) and elvers (n = 199) collected during March–December 2013 from an eel ladder at a dammed creek near Charleston, SC, USA. Among all the eels examined [total lengths (TLs), 34–156 mm], the prevalence (±SE), mean abundance, and mean intensity of A. crassus worms was 29.4 ± 2.1%, 0.88 ± 0.12, and 2.98 ± 0.34, respectively. Infection by A. crassus was not detected in the earliest glass eel development stages (pigment stages 1–3), but it was detected in more advanced stages (pigment stages 4–7) and fully pigmented elvers. From March to July, parasite prevalence increased significantly with eel TL, and all eels 125 mm or longer (n = 13) were infected. From August–December, when fewer eels were caught, parasite prevalence was generally lower and less dependent on the eel TL. Our study demonstrates the potential risk of spreading A. crassus to new areas by transporting live glass eels and elvers. This is of particular relevance because our study site was located in the Cooper River drainage, one of the few locations in the USA that permits a glass eel harvest.

Relating American Eel Anguilla rostrata abundance to environmental DNA concentration in the Bronx River

2021 ◽  
Author(s):  
Sam C. Chin ◽  
John Waldman ◽  
Mike Bednarski ◽  
Merry Camhi ◽  
Jake LaBelle ◽  
...  
Keyword(s):  
Environmental Dna ◽  
Anguilla Rostrata ◽  
American Eel ◽  
Dna Concentration ◽  
Bronx River

scholarly journals American eel,Anguilla rostrata, growth in fresh and salt water: implications for conservation and aquaculture

2009 ◽  
Vol 16 (4) ◽  
pp. 306-314 ◽  
Author(s):  
H. M. LAMSON ◽  
D. K. CAIRNS ◽  
J.-C. SHIAO ◽  
Y. IIZUKA ◽  
W.-N. TZENG
Keyword(s):  
Salt Water ◽  
Anguilla Rostrata ◽  
American Eel

scholarly journals Behavioural guidance of yellow-stage American eel Anguilla rostrata with a light- emitting diode device

2018 ◽  
Vol 35 ◽  
pp. 159-168 ◽  
Author(s):  
CK Elvidge ◽  
MI Ford ◽  
TC Pratt ◽  
KE Smokorowski ◽  
M Sills ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Anguilla Rostrata ◽  
American Eel ◽  
Light Emitting

Artificial maturation, fertilization, and early development of the American eel (Anguilla rostrata)

2010 ◽  
Vol 88 (11) ◽  
pp. 1121-1128 ◽  
Author(s):  
K. Oliveira ◽  
W. E. Hable
Keyword(s):  
Early Development ◽  
Anguilla Rostrata ◽  
Sargasso Sea ◽  
American Eel ◽  
Important Species ◽  
Vitro Fertilization ◽  
Commercially Important ◽  
Elusive Species ◽  
American Eels

Spawning for the American eel ( Anguilla rostrata (Le Sueur, 1817)) takes place in secretive locations within the Sargasso Sea, which has thus far prevented investigations of gametogenesis and early development in this ecologically and commercially important species. Attempts to induce maturation and reproduction in this species have been few and have produced limited results, with a single report of the production of gastrula-stage embryos. Here we report the successful maturation of female American eels. Maturation occurred within 13 weeks and ovulation was induced with a single injection of 17α,20β-dihydroxy-4-pregnen-3-one (DHP). Following in vitro fertilization, embryogenesis through hatching was observed and larvae were maintained for up to 6 days. We show that a crucial factor for successful fertilization is the stage of the oocyte at the time of induced ovulation. Oocytes that had not reached the migratory nucleus stage, or had passed this stage, were not successfully fertilized. These findings demonstrate that American eel can reproduce in the laboratory and previously untestable hypotheses pertaining to the developmental biology of this elusive species can now be explored.

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