scholarly journals The Effects of Praziquantel on the Monogenean Gill Parasite Pseudodactylogyrus Bini

1987 ◽  
Vol 28 (3-4) ◽  
pp. 447-450
Author(s):  
Kurt Buchmann
Keyword(s):  
Gill Parasite

scholarly journals Gastrodermis ultrastructure of the different life stages of the polyopisthocotylean monogenean gill parasite Discocotyle sagittata

2021 ◽  
Author(s):  
Joanne Cable ◽  
Mohamed Mohamed El-Naggar
Keyword(s):  
Salmo Trutta ◽  
Structural Organization ◽  
Alimentary Tract ◽  
Blood Feeding ◽  
Life Stages ◽  
Variable Size ◽  
Digestive Cells ◽  
Gill Parasite ◽  
Apical Cytoplasm ◽  
Gill Lamellae

AbstractThe polyopisthocotylean Discocotyle sagittata is a blood-feeding monogenean that infects the gill lamellae of rainbow trout, Oncorhynchus mykiss, and brown trout, Salmo trutta. The ultrastructure of their alimentary tract, at different stages of the life cycle, was previously unknown. Here, we show that the gastrodermis of the oncomiracidium, subadult, and adult D. sagittata follows the same structural organization as that of other blood-feeding polyopisthocotyleans, being composed of digestive cells alternating with a connecting syncytium. Digestive cells of the oncomiracidium are found in three developmental forms: undifferentiated, developing differentiated, and differentiated (presumably functioning) cells whereas those of adult and subadult are present in a single functioning state with variable size and content. The apical cytoplasm of adult digestive cells forms conical outgrowths, a feature which is absent in the oncomiracidium. The connecting syncytium of the oncomiracidium has no evidence of metabolic activity, while that of adult and subadult is metabolically active. The lamellae of the connecting syncytium of adults and subadults are more numerous and larger, and their terminal portions are expanded, compared with those of the oncomiracidium. Parallel, tubular, membranous structures are characteristic of the apical cytoplasm of the connecting syncytium of the oncomiracidium. Luminal lamella in the oncomiracidium, subadult, and adult form balloon-like structures enclosing some luminal contents, but those of the oncomiracidium are larger, bounded by nucleated cytoplasmic layer, and enclose more luminal contents. The possible functions of these structures and mechanism of digestion in both oncomiracidium and adult are discussed.

Is reduced body growth of cod exposed to the gill parasite Lernaeocera branchialis a cost of resistance?

2006 ◽  
Vol 69 (5) ◽  
pp. 1281-1287 ◽  
Author(s):  
D. A. Lysne ◽  
W. Hemmingsen ◽  
A. Skorping
Keyword(s):  
Body Growth ◽  
Gill Parasite ◽  
Reduced Body ◽  
Cost Of Resistance

The microhabitat and morphology of Grubea cochlear on the gills of mackerel from lyme bay, Southern England

1994 ◽  
Vol 74 (3) ◽  
pp. 731-734 ◽  
Author(s):  
A.R. Lyndon ◽  
V.M. Martinez-Vidal
Keyword(s):  
Morphological Variation ◽  
Relative Size ◽  
Sympatric Species ◽  
Gill Arch ◽  
Southern England ◽  
Atlantic Mackerel ◽  
Gill Parasite ◽  
Scomber Scombrus

The microhabitat and morphology of Grubea cochlear (Monogenea), a rare gill parasite of Atlantic mackerel (Scomber scombrus), were investigated for a sample of fourteen parasite individuals obtained from Lyme Bay, southern England. Grubea cochlear showed a preference for the inner hemibranch of the fourth gill arch, this localization contrasting with that of the related and sympatric species Kuhnia scombri. The morphology of G. cochlear in this sample differed slightly from some of the previously documented specimens, especially with regard to the number of small genital hooks and the relative size of the haptor. It is suggested that geographical morphological variation may occur in this species.

Microhabitat preference, body size, and egg allocation in the gill parasite Naobranchia lizae (Copepoda)

2020 ◽  
Vol 119 (4) ◽  
pp. 1237-1242
Author(s):  
Sara R. Teemer ◽  
Isaure de Buron ◽  
Chelsea V. Gacula ◽  
Timothy C. Sparkes
Keyword(s):  
Body Size ◽  
Microhabitat Preference ◽  
Gill Parasite

scholarly journals A new species of Henneguya, a gill parasite of Astyanax altiparanae (Pisces: Characidae) from Brazil, with comments on histopathology and seasonality

2003 ◽  
Vol 98 (6) ◽  
pp. 761-765 ◽  
Author(s):  
Bianca Barassa ◽  
Nelson S Cordeiro ◽  
Sarah Arana
Keyword(s):  
New Species ◽  
Gill Parasite ◽  
A New Species

Hatschekia monacanthi Yamaguti, 1939 (Copepoda, Hatschekiidae), a gill parasite of black scraper, Thamnaconus modestus (Günther, 1877), cultured in Japan

Crustaceana ◽  
2018 ◽  
Vol 91 (6) ◽  
pp. 763-766
Author(s):  
Kazuya Nagasawa ◽  
Kazuhiro Hanyu ◽  
Daisuke Uyeno
Keyword(s):  
Gill Parasite ◽  
Thamnaconus Modestus

scholarly journals Ultrastructure of the anterior adhesive apparatus of the gill parasite Macrogyrodactylus clarii and skin parasite M. congolensis (Monogenea; Gyrodactylidae) from the catfish Clarias gariepinus

2019 ◽  
Vol 71 ◽  
pp. 151-159 ◽  
Author(s):  
Mohammed Mohammed El-Naggar ◽  
Safaa Zaky Arafa ◽  
Samir Ahmed El-Abbassy ◽  
Graham C. Kearn ◽  
Jo Cable
Keyword(s):  
Clarias Gariepinus ◽  
Gill Parasite

scholarly journals Paratrichodina africana (Ciliophora): A pathogenic gill parasite in farmed Nile tilapia

2013 ◽  
Vol 197 (3-4) ◽  
pp. 705-710 ◽  
Author(s):  
G.M.R. Valladão ◽  
S.B. Pádua ◽  
S.U. Gallani ◽  
R.N. Menezes-Filho ◽  
J. Dias-Neto ◽  
...  
Keyword(s):  
Nile Tilapia ◽  
Gill Parasite

Impact of a Gill Parasite Upon the MinnowNotropis telescopus

2012 ◽  
Vol 11 (1) ◽  
pp. 35-42 ◽  
Author(s):  
Andrew B. Adrian ◽  
Brittany Holmes ◽  
Bruce W. Stallsmith
Keyword(s):  
Gill Parasite
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