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1. Henneguya cynoscioni sp. n. (Myxosporea: Bivalvulida), an agent of severe cardiac lesions in the spotted seatrout, Cynoscion nebulosus (Teleostei: Sciaenidae)

Creator:
Dyková, Iva, Buron, Isaure de, Roumillat, William A., and Fiala, Ivan
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Henneguya cynoscioni, Myxosporea, pathogenicity, cardiac henneguyosis, Cynoscion nebulosus, Cardicola laruei, and Atlantic Ocean
Language:
English
Description:
A new myxosporean species, Henneguya cynoscioni sp. n., is described from the spotted seatrout, Cynoscion nebulosus (Cuvier) (Sciaenidae) as a causative agent of cardiac henneguyosis. This new myxosporean species is characterized by the morphology of spores and the sequence of SSU rDNA. Examination of 227 spotted seatrout from four South Carolina estuaries in 2008-2010 revealed a 33.5% total prevalence of H. cynoscioni. Henneguya cynoscioni produces lesions in the bulbus arteriosus, its specific site of infection. The severity of lesions and their impact on the bulbus arteriosus is proportional to the number of plasmodial stages developing in this segment of the heart, being most pronounced in host reaction directed against spores liberated from plasmodia.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Ligophorus species (Monogenea: Ancyrocephalidae) from Mugil cephalus (Teleostei: Mugilidae) off Morocco with the description of a new species and remarks about the use of Ligophorus spp. as biological markers of host populations

Creator:
Hafidi, Fouzia El, Rkhami, Ouafae Berrada, de Buron, Isaure, Durand, Jean-Dominique, and Pariselle, Antoine
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Ligophorus maroccanus sp. n., cryptic species marker, geographical distribution, Atlantic Ocean, and Mediterranean Sea
Language:
English
Description:
Gill monogenean species of Ligophorus Euzet et Suriano, 1977 were studied from the teleost Mugil cephalus Linneaus (Mugilidae) from the Mediterranean and Atlantic coasts of Morocco. We report the presence of L. mediterraneus from both the Mediterranean and Atlantic coast and L. cephali and L. maroccanus sp. n. from the Atlantic coast only. The latter species, which is described herein as new, resembles L. guanduensis but differs from this species mainly in having a shorter penis compared to the accessory piece, a proportionally longer extremity of the accessory piece and a less developed heel. The utility of Ligophorus spp. as markers of cryptic species of the complex M. cephalus is discussed in the context of species diversity and geographical distribution of these monogeneans on this host around the world. Presence of different species of Ligophorus on M. cephalus sensu stricto from the Atlantic and Mediterranean coast of Morocco demonstrates the usefulness of these species as fine resolution markers of genetic populations of their host, which are known to inhabit those coasts.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Morphological and genetic description of two new species of philometrid nematodes (Philometridae) parasitic in needlefishes (Belonidae) from estuaries of Florida, USA

Creator:
Moravec, František, Bakenhaster, Micah D., Seyoum, Seifu, and Tringali, Michael D.
Format:
počítač and online zdroj
Type:
model:article and TEXT
Subject:
Parasitic nematode, Philometra, Barracudia, marine fish, Strongylura, Atlantic Ocean, North America, Tampa Bay, Apalachicola Bay, and integrated taxonomy
Language:
English
Description:
Two new species of philometrid nematodes (Philometridae) from needlefishes (Belonidae) in Florida are described based on morphological and genetic characteristics: Philometra aequispiculata sp. n. (males and females) collected from the ovary of Strongylura marina (Walbaum) (type host) and Strongylura notata (Poey), and Philometra notatae sp. n. (females) from the swimbladder of S. notata. Both species are described and illustrated based on light and scanning electron microscopical examinations. Morphologically, P. aequispiculata sp. n. differs from all congeners mainly in the unique structure of the distal tip of the gubernaculum, whereas P. notatae sp. n. is mainly characterised by the presence of eight markedly large cephalic papillae of the outer circle in gravid and subgravid females, the body length of the gravid female (54 mm) and by the absence of caudal projections. Molecular characterisation of the new species was assessed from phylogenetic analysis of mitochondrial cytochrome c oxidase I (COI) and SSU rRNA small-subunit ribosomal RNA (SSU) sequences among closely related philometrids by way of Bayesian inference. Phylogenetic reconstructions based on COI and SSU sequences show each of the new species comprise discrete ancestor-descendent lineages.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public