Endohelminths of a Snake Mackerel, Gempylus serpens (Trichiuroidea: Gempylidae), from the Gulf of Mexico

Endohelminths are reported from a female snake mackerel, Gempylus serpens (Trichiuroidea: Gempylidae), captured from a depth of 61 m in the Gulf of Mexico 140 km south of the mouth of Mobile Bay, AL, in August 1998. A diverse endohelminth parasite fauna was found: 29 plerocercoid type I tetraphyllideans from the lower intestine; 4 didymozoid metacercariae allocated to the collective group Monilicaecum and one didymozoid metacercaria of the collective group Torticaecum from the pyloric cecum; one juvenile Gonocerca phycidis from the stomach; and 5 larvae (L3 stage) comprising 3 species of Anisakis from the pyloric cecum. These nematodes were identified as species of Anisakis due to the presence of an oblong ventriculus lacking an appendix, no intestinal cecum or interlabia, 3 lips with dentigerous ridges, and an excretory pore located between the lateroventral lips. Differences in overall size and in the lengths of the ventriculus and esophagus in relation to total body length were used to distinguish the 3 species of Anisakis collected. Seven specimens of a possibly unnamed species of parasitic copepod representing Bomolochus infected the gill chamber. Stomach contents included 6 early-juvenile flatfish (Pleuronectiformes). All of the helminths are measured and illustrated, and for some of the parasites recovered, we are unaware of any reports from this host species

PCR-based detection of mobile genetic elements in total community DNA

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Parasites of non-native freshwater fishes introduced into england and wales suggest enemy release and parasite acquisition

When non-native species are introduced into a new range, their parasites can also be introduced, with these potentially spilling-over into native hosts. However, in general, evidence suggests that a high proportion of their native parasites are lost during introduction and infections by some new parasites from the native range might occur, potentially resulting in parasite spill-back to native species. These processes were investigated here using parasite surveys and literature review on seven non-native freshwater fishes introduced into England and Wales. Comparison of the mean numbers of parasite species and genera per population for each fish species England andWaleswith their native ranges revealed\9 % of the native parasite fauna were present in their populations in England and Wales. There was no evidence suggesting these introduced parasites had spilled over into sympatric native fishes. The non-native fishes did acquire parasites following their introduction, providing potential for parasite spill-back to sympatric fishes, and resulted in non-significant differences in overall mean numbers of parasites per populations between the two ranges. Through this acquisition, the non-native fishes also had mean numbers of parasite species and genera per population that were not significantly different to sympatric native fishes. Thus, the non-native fishes in England and Wales showed evidence of enemy release, acquired new parasites following introduction providing potential for spill-back, but showed no evidence of parasite spill-over

Patagifer lamothei n. sp. (Digenea: Echinostomatidae: Nephrostominae) from the white ibis Eudocimus albus (Threskiornithidae) from Texas, USA Patagifer lamothei n. sp. (Digenea: Echinostomatidae: Nephrostominae) del ibis blanco Eudocimus albus (Threkiorni

Abstract. During a study of the endohelminths of wading birds from the Texas Gulf coast, 12 specimens of an undescribed species of Patagifer Dietz, 1909 (Echinostomatidae: Nephrostominae) were collected from 2 of 8 white ibis, Eudocimus albus (Linnaeus) (Threskiornithidae), from the Galveston and Brazos County areas of Texas, USA. Patagifer lamothei n. sp. can be distinguished from P. bilobus (Rudolphi, 1819), P. brygooi Key words: Digenea, Echinostomatidae, Patagifer lamothei n. sp., Eudocimus albus, white ibis, Texas, USA. Resumen. En un estudio de endohelmintos de aves de los humedales de la costa de Texas, se recolectaron 12 ejemplares de una especie no descrita de Patagifer Dietz, 1909 (Echinostomatidae: Nephrostominae) en 2 ibis blancos de 8 examinados Eudocimus albus (Linnaeus) (Threskiornithidae) procedentes de los condados de Galveston y Brazos, Texas, EUA. Patagifer lamothei n. sp. se puede distinguir de P. bilobus (Rudolphi, 1819), P. brygoo

Updated keys to the genera in the subfamilies of Cyclocoelidae Stossich, 1902, including a reconsideration of species assignments, species keys and the proposal of a new genus in Szidatitreminae Dronen, 2007

Dronen, Norman O., Blend, Charles K. (2015): Updated keys to the genera in the subfamilies of Cyclocoelidae Stossich, 1902, including a reconsideration of species assignments, species keys and the proposal of a new genus in Szidatitreminae Dronen, 2007. Zootaxa 4053 (1): 1-100, DOI: 10.11646/zootaxa.4053.1.

Re-evaluation of Tellervotrema katadara (Kuramochi, 2001) Kuramochi, 2009 (Opecoelidae: Plagioporinae) and supplementary morphological data for T. beringi (Mamaev, 1965) Gibson & Bray, 1982 with new host and locality

Blend, Charles K., Kuramochi, Toshiaki, Dronen, Norman O. (2015): Re-evaluation of Tellervotrema katadara (Kuramochi, 2001) Kuramochi, 2009 (Opecoelidae: Plagioporinae) and supplementary morphological data for T. beringi (Mamaev, 1965) Gibson & Bray, 1982 with new host and locality. Zootaxa 3986 (4): 435-451, DOI: http://dx.doi.org/10.11646/zootaxa.3986.4.

Macrourimegatrema brayi n. gen., n. sp. (Digenea: Opecoelidae) from four species of deep-sea macrourid fishes from the Gulf of Mexico and Caribbean Sea, with a list of endohelminths reported from species of Bathygadus and Gadomus (Macrouridae)

Blend, Charles K., Dronen, Norman O., Armstrong, Howard W. (2004): Macrourimegatrema brayi n. gen., n. sp. (Digenea: Opecoelidae) from four species of deep-sea macrourid fishes from the Gulf of Mexico and Caribbean Sea, with a list of endohelminths reported from species of Bathygadus and Gadomus (Macrouridae). Zootaxa 566 (1): 1-18, DOI: 10.11646/zootaxa.566.1.1, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.566.1.

FIGURES 4–6 in Re-evaluation of Tellervotrema katadara (Kuramochi, 2001) Kuramochi, 2009 (Opecoelidae: Plagioporinae) and supplementary morphological data for T. beringi (Mamaev, 1965) Gibson & Bray, 1982 with new host and locality

FIGURES 4–6. Tellervotrema beringi (Mamaev, 1965) Gibson & Bray, 1982 from the longfin grenadier, Coryphaenoides longifilis Günther. 4. Composite drawing of whole specimen, dorsal view (Note: Ceca are dorsal to features herein but are illustrated ventral for ease of observation). 5. Male terminal genitalia, ventral view. 6. Composite drawing of oötype region, dorsal view (Note: Oviduct is ventral to transverse vitelline ducts but illustrated dorsal to view former). Abbreviations: At, anterior testis; C, cecum; Cp, cirrus pouch; Dsc, dark-stained cells; E, egg; Ep, excretory pore; Ev, excretory vesicle; Gp, genital pore; Lc, Laurer's canal; M, metraterm; Mg, Mehlis' gland; O, ovary; Oes, oesophagus; Os, oral sucker; Ov, oviduct; P, pharynx; Pc, prostate gland-cells; Pp, pars prostatica; Pt, posterior testis; Sr, seminal receptacle; Sv, seminal vesicle; U, uterus; V, vitelline follicles; Vd, vitelline duct; Vr, vitelline reservoir; Vs, ventral sucker. Scale-bars: 4, 350 µm; 5, 185 µm; 6, 135 µm