Morphology of the Infusoriform Larva of Dicyema aegira (Mesozoa: Dicyemidae)

Short, Robert B.; Damian, Raymond T.

doi:10.2307/3276448

Cited by 37 publications

(16 citation statements)

References 2 publications

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“…Dicyema shorti was described from the southern Gulf of Mexico (off Veracruz, Mexico) based on a single host specimen of A. burryi (see Furuya et al, 2002). In contrast, seven dicyemid species are known to occur off Florida, USA, in the northern Gulf of Mexico (Short, 1961(Short, , 1962Couch & Short, 1964;Short & Damian, 1966;Furuya et al, 2002;Overstreet & Hochberg, 2009). Until now, the dicyemid fauna of the Mexican territorial waters of the Gulf of Mexico has been poorly studied.…”

Section: Discussionmentioning

confidence: 97%

“…The terminology for cell nomenclature used in the description of infusoriform larvae is based on Nouvel (1948), Short & Damian (1966), Furuya et al (1992Furuya et al ( , 1997 and Furuya (1999). Syntypes of the two dicyemids are deposited in the Colección de Invertebrados of the Universidad Nacional Autónoma de Mexico (CI-IBUNAM 0001-0004), in the collection of the Department of Invertebrate Zoology, Santa Barbara Museum of Natural History, Santa Barbara, California, USA , in the Colección Helmintológica del CINVESTAV-Merida (CHCM 524,524.2,524.3,524.4) and in the author's collection.…”

Section: Methodsmentioning

confidence: 99%

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Two new species of dicyemid mesozoans (Dicyemida: Dicyemidae) from Octopus maya Voss & Solis-Ramirez (Octopodidae) off Yucatan, Mexico

Castellanos-Martínez¹,

Aguirre-Macedo

Furuya

2016

Syst Parasitol

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Two new dicyemid species are described from the endemic cephalopod Octopus maya Voss & Solis-Ramirez collected off Yucatan, Mexico. The renal sacs of 40 juvenile and adult octopuses from four localities were examined. Dicyema hochbergi n. sp. is a medium-sized species that reaches 2,245 µm in length. The vermiform stages consist of 18-24 peripheral cells, a conical calotte and the extension of the axial cell between the base and middle of the metapolar cells. Infusoriform embryos consist of 39 cells with urn cell containing one germinal cell, two nuclei and solid refringent bodies. Dicyema mexcayae n. sp. is a relatively small species that reaches 1,114 µm in length. The vermiform stages are constituted by 14-16 peripheral cells, an elongate calotte and the axial cell extending forward to the middle of the metapolar cells. The infusoriform embryos consist of 37 cells, two solid refringent bodies and urn cells with two nuclei each. The present study represents the first description of a dicyemid species from O. maya and increases the number of described species from Mexican waters to 11.

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Section: Discussionmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Two new species of dicyemid mesozoans (Dicyemida: Dicyemidae) from Octopus maya Voss & Solis-Ramirez (Octopodidae) off Yucatan, Mexico

Castellanos-Martínez¹,

Aguirre-Macedo

Furuya

2016

Syst Parasitol

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“…Measurements and drawings were made with the aid of an ocular micrometer and a drawing tube (Olympus U-DA), respectively. Nouvel (1948), Short and Damian (1966), Furuya, Tsuneki and Koshida (1992b, 1997 and Furuya (1999) give the terminology for cell names used in the description of infusoriform larvae.…”

Section: Methodsmentioning

confidence: 99%

A new species of Dicyemennea Whitman, 1883 (Phylum Dicyemida) from Sepia latimanus (Mollusca: Cephalopoda: Decapodidae) off Okinawa, Japan

Furuya

2006

Syst Parasitol

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A new species of dicyemid mesozoan is described from a cuttlefish Sepia latimanus Quoy and Gaimard collected off Nago, Naha and Onnason, Okinawa Islands, Ryukyu Islands, Japan. Dicyemennea ryukyuense n. sp. is a large species that reaches about 5 mm in length. The vermiform stage is characterised by 23 peripheral cells, a conical calotte and an axial cell that extends to the base of the propolar cells. The infusoriform embryo consists of 37 cells; two nuclei are present in each urn cell and the refringent bodies are solid. In the type of reproductive strategy, rhombogens of D. ryukyuense form a small number of infusorigens and produce a relatively large number of gametes per infusorigen. In the family Dicyemidae, Dicyemennea Whitman, 1883 is the largest group after Dicyema von Kölliker, 1849. Other dicyemid species, including those belonging to Dicyema, were not detected. Dicyemids have never previously been detected in cephalopods living on corals and rocks off the Ryukyu Islands, even though they are benthonic in habitat. This is the first report of a dicyemid mesozoan from S. latimanus and also from off the Ryukyu Islands. S. latimanus inhabits coral reefs, often swimming over the coral but usually lying on the sandy bottom. Dicyemids cannot possibly infect cephalopods which live exclusively over coral and rock.

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“…The terminology for cell names used in the description of infusoriform larvae is based on Nouvel (1948), Short and Damian (1966), Furuya et al (1992a, 1997), and Furuya (1999 (Table I); trunk cells arranged in opposed pairs. Anterior end of calotte rounded.…”

Section: Methodsmentioning

confidence: 99%