Biospeedotrema jolliveti is a species of
trematode
Trematoda is a class of flatworms known as flukes. They are obligate internal parasites with a complex life cycle requiring at least two hosts. The intermediate host, in which asexual reproduction occurs, is usually a snail. The definitive host ...
s inhabiting
hydrothermal vent
A hydrothermal vent is a fissure on the seabed from which geothermally heated water discharges. They are commonly found near volcanically active places, areas where tectonic plates are moving apart at mid-ocean ridges, ocean basins, and hotspot ...
fishes (particularly ''
Ventichthys biospeedoi'') in the south eastern
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
. It can be distinguished from its family by its symmetrical
testicular configuration; its
uterus
The uterus (from Latin ''uterus'', plural ''uteri'') or womb () is the organ in the reproductive system of most female mammals, including humans that accommodates the embryonic and fetal development of one or more embryos until birth. The uter ...
passing between the testes. Furthermore, it can be differentiated by
vitelline
Vitelline may refer to:
Embryology
* Vitelline arteries, arteries that bring blood to the yolk sac
* Vitelline circulation, the system of blood flowing between an embryo and its yolk sac
* Vitelline cyst, a developmental defect relating to the c ...
fields which extend slightly into its post-testicular region; its
intestinal
The gastrointestinal tract (GI tract, digestive tract, alimentary canal) is the tract or passageway of the digestive system that leads from the mouth to the anus. The GI tract contains all the major organs of the digestive system, in humans ...
bifurcation is dorsal to its ventral
sucker; its
genital pore is somewhat submedian or median; its
cirrus sac is short and the
caeca are large and overlap the testes.
References
Further reading
*Bray, Rodney A., et al. "The molecular phylogeny of the digenean family Opecoelidae Ozaki, 1925 and the value of morphological characters, with the erection of a new subfamily." Folia parasitologica 63 (2016): 013.
*Shedko, M. B., S. G. Sokolov, and D. M. Atopkin. "The first record of Dimerosaccus oncorhynchi (Trematoda: Opecoelidae) in fishes from rivers of Primorsky Territory, Russia, with a discussion on its taxonomic position using morphological and molecular data." ПАРАЗИТОЛОГИЯ 49 (2015): 3.
Plagiorchiida
Parasitic helminths of fish
Animals described in 2014
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