Paramoebiasis in the Blue Crab, Callinectes sapidus

Johnson, Phyllis T.

doi:10.1016/s0022-2011(77)80036-0

Cited by 52 publications

(64 citation statements)

References 11 publications

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“…Hemocytes with cytoplasmic inclusions similar to those described as virus infections (Johnson 1985) were found in 19 crabs; a histophagous ciliate, Mesanophrys chesapeakensis (Messick & Small 1996), was found in 4; unidentified microsporidians (Sprague 1977) were found in 28; Paramoeba perniciosa (Sprague & Beckett 1966, Johnson 1977) was found in 35; and a haplosporidian-like organism (Newman et al 1976) was found in 2 sampled crabs. Some crabs which had Hematodinium sp.…”

Section: Additional Parasitesmentioning

confidence: 73%

Epizootiology of the parasitic dinoflagellate Hematodinium sp. in the American blue crab Callinectes sapidus

Messick¹,

Shields²

2000

Dis. Aquat. Org.

115

186

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Section: Additional Parasitesmentioning

confidence: 73%

Epizootiology of the parasitic dinoflagellate Hematodinium sp. in the American blue crab Callinectes sapidus

Messick¹,

Shields²

2000

Dis. Aquat. Org.

115

186

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“…More than 70 yr after the description of the type species of the genus Paramoeba Schaudinn, 1896 (P. eilhardi Schaudinn 1896), which was isolated from the water of a marine aquarium (information taken from Chatton 1953), another species, P. perniciosa Sprague, Beckett & Sawyer, 1969 was identified. It repeatedly caused mortalities of blue crabs Callinectes sapidus along the coast of North Carolina (USA), and was also identified as a parasite of the crustaceans Cancer irroratus and Homarus americanus (Sawyer 1976, Johnson 1977. P. invadens Jones, 1985, recovered from the green sea urchin Strongylocentrotus droebachiensis, inflicted massive kills along the Atlantic coast of Nova Scotia, Canada through the years 1980 to 1983 (Jones 1985).…”

Section: Abstract: Neoparamoeba Strains · Paramoeba Eilhardi · Phylomentioning

confidence: 99%

“…Unfortunately, the epizootic agents found in crustaceans and echinoids (Sprague et al 1969, Johnson 1977, Jones 1985 were not preserved in culture collections, and agents of more recent mortalities of American lobsters were not isolated (Mullen et al 2004(Mullen et al , 2005. The first and only SSU rDNA sequence of a strain representative of the genus Paramoeba (P. eilhardi, Culture Collection of Algae and Protozoa [CCAP] strain 1560/2) was deposited in GenBank in 2004.…”

Section: Abstract: Neoparamoeba Strains · Paramoeba Eilhardi · Phylomentioning

confidence: 99%

Phylogeny of Neoparamoeba strains isolated from marine fish and invertebrates as inferred from SSU rDNA sequences

Dyková¹,

Nowak²,

Pecková³

et al. 2007

Dis. Aquat. Org.

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“…La morfología del tracto reproductor masculino de U. uruguayensis es similar a la de los sistemas reproductivos descriptos para Decapoda en general (KROL et al, 1992) como por HINSCH (1988) para Brachyura en particular. Respecto de los testículos, estos son dos estructuras lobulares adheridas a la cara ventral del caparazón dorsal, que no presentan comisura, tal como se cita para Brachyura (JOHNSON 1980;GARCIA & SILVA, 2006). MANTELATTO & FRANSOZO (1999) analizando el desarrollo del testículo de Callinectes ornatus Ordway, 1863 observaron una gran proporción de cistos desarrollados o maduros en el testículo durante todo el año.…”

Section: Discussionunclassified

“…Así, las agrupaciones de células germinales rodeadas por un epitelio escamoso han sido designadas como "acinos" (BURTON, 1995), "acini" (HINSCH, 1988), "lóbulos" (JOHNSON, 1980) o "conductos seminíferos" (MORIYASU et al, 2002) y cistos testiculares (GARCIA & SILVA, 2006). Las células somáticas del testículo han sido denominadas "células acompañantes" (HALEY, 1984), "células epiteliales" (HINSCH, 1988), células "nurse" (KROL et al, 1992), "epitelio escamoso" (GARCIA & SILVA, 2006).…”

unclassified

[No Title Available]

Cuartas

Petriella

2010

Iheringia, Sér. Zool.

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ABSTRACT. Structure of the male reproductive tract of Uca uruguayensis (Decapoda, Ocypodidae). The structure of the male reproductive tract was described in Uca uruguayensis Nobili, 1901, by using histological methods, scanning electron microscopy techniques, and stereoscopic observations of fresh material. The aim of this work was to establish the functional changes associated with sexual maturation. The morphology of the first (G1) and second (G2) pair of gonopods was described. The male reproductive tract consists of paired organs: testes, and tubular and convoluted vas deferens (VD) ending with a terminal ampoule (TA).The (VD) is composed of three parts: anterior (AVD), medial (MVD) and posterior (PVD). The AVD and MVD are lined by a single layer of cubical cells. The PVD epithelial cells are columnar with elongated nuclei. The terminal ampoule comprises four interconnecting chambers and is externally surrounded by connective tissue. The study of testes and vas deferens at different times along the year suggests that U. uruguayensis has a single and continuous reproductive season from December to March. The TA has not been described in other brachyurans and this structure is novel to Brachyura. KEYWORDS.Male reproductive tract, functional morphology, Crustacea, Brachyura.RESUMEN. El objetivo de este trabajo es describir las estructuras del sistema reproductor de machos de Uca uruguayensis Nobili, 1901 y estudiar los cambios relacionados con la madurez sexual. Se trabajó con observación estereoscópica de material fresco, técnica histológica de rutina y observaciones en Microscopio Electrónico de Barrido. Se incluyó la caracterización de los gonopodos 1 (G1) y 2 (G2). El tracto reproductor del macho se compone de un par de testículos (T), un vaso deferente (VD) tubular y sinuoso y una ampolla terminal (AT). El VD tiene tres secciones, la anterior (VDA), la media (VDM) y la posterior (VDP). El VDA y VDM están conformadas por un epitelio simple de células cúbicas. El epitelio del VDP es columnar y con núcleos basales y alongados. El diseño tubular se modifica al ocuparse el lumen del VDP con líquido espermático durante el verano y la musculatura circular se hace más evidente. La porción terminal del VDP se ensancha formando una ampolla (AT) que comprende cuatro cámaras interconectadas. Todas las estructuras están rodeadas de una capa de tejido conectivo de poco espesor. Se identifican las modificaciones observadas en la histología de T y VD, definiendo como mas relevantes las observadas desde el mes de noviembre hasta marzo. Estas modificaciones sugieren que U. uruguayensis tiene, en la localidad estudiada, una única estación reproductiva durante el verano en esta latitud. La AT, tal como es descripta, es una estructura que hasta el momento no ha sido mencionada para los Brachyura. PALABRAS CLAVE.Tracto reproductor masculino, morfología funcional, Crustacea, Brachyura.

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Paramoebiasis in the Blue Crab, Callinectes sapidus

Cited by 52 publications

References 11 publications

Epizootiology of the parasitic dinoflagellate Hematodinium sp. in the American blue crab Callinectes sapidus

Epizootiology of the parasitic dinoflagellate Hematodinium sp. in the American blue crab Callinectes sapidus

Phylogeny of Neoparamoeba strains isolated from marine fish and invertebrates as inferred from SSU rDNA sequences

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