The naupliar development of Oithona oligohalina, Fonseca &amp; Björnberg, 1976

Fonseca, Vera Regina J. R. M.; Prado, M. S. de Almeida

doi:10.1590/s0373-55241979000200002

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“…In addition, other distinguishing characteristics were established. We refer to recent studies that have described the morphology of some caudal Oithonidae species (Oithona ovalis, Oithona oligohalina, Oithona hebes and Dioithona oculata) for which the species identification was confirmed for each development stage because of rearing under laboratory conditions (Fanta 1976, Fonseca & Almeida-Prado 1979, Zacarias & Zoppi-Roa 1981, Ferrari & Ambler 1992.…”

Section: Introductionmentioning

confidence: 99%

Morphology of the naupliar stages of some Oithona species (Copepoda: Cyclopoida) occurring in Toyama Bay, southern Japan Sea

Takahashi¹,

Uchiyama

2007

Plankton Benthos Res

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Adults of Oithona atlantica, Oithona plumifera and Oithona similis occurred throughout the year in Toyama Bay (0-500 m), but in the surface layers (0-50 m), the adults of O. atlantica and O. plumifera were observed in Toyama Bay during different seasons. Based on the differences in adult distribution, O. atlantica nauplii were found in samples collected during spring (April to May) while O. plumifera were found in samples collected during autumn (September to October). Identification of O. atlantica and O. plumifera nauplii and comparisons of their morphological differences were based on this temporal separation. Nauplii of O. atlantica, O. plumifera and O. similis differed in their ratio of body height (maximum length of dorsal-ventral axis) to length (H/L). This characteristic ratio was common to all naupliar developmental stages and is therefore useful as a basis for distinguishing between naupliar stages of the three species. The population and community structure and densities of these species of Oithona were investigated in the surface water layer (0-50 m depth) of Toyama Bay from 1997 to 1999. Major population structural changes occurred in different sampling seasons, and may have been influenced by changes in hydrographic conditions, including temperature and water current. In winter and spring (from February to June), many O. similis and O. atlantica nauplii appeared, and the former nauplii were more dominant. Oithona similis nauplii are suggested to may be the most important species as prey for fish larvae.

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Section: Introductionmentioning

confidence: 99%

Morphology of the naupliar stages of some Oithona species (Copepoda: Cyclopoida) occurring in Toyama Bay, southern Japan Sea

Takahashi¹,

Uchiyama

2007

Plankton Benthos Res

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“…Oithona oligohalina Fonseca & Bjornberg, 1976: 126;Medeiros & Bjornberg, 1978;Fonseca & Prado, 1979b (naupliar development); Bjornberg, 1981;Reid & Esteves, 1984 (SYN. N.).…”

Section: Figs 2-13 Oirhona Hebesmentioning

confidence: 99%

Copepods of the Genus Oithona Baird, 1843 from mangrove areas of Central and South America

Rocha¹

1986

Hydrobiologia

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The distribution of the cyclopoid Genus Oithona in waters bordered by mangroves along the coast of Central and South America was studied. Of the ten species previously registered only 0. hebes Giesbrecht, 0. oswaldocruzi Oliveira, 0. alvarezi Lindberg and 0. fonsecae Ferrari & Bowman remain valid. 0. hebes and 0. oswaldocruzi are redescribed and their synonymies extensively discussed. No representatives of 0. alvarezi and 0. fonsecae were examined.Integumental pore signature patterns of oithonid females are described for the first time. The importance of the pore signature of the cephalosomic flaps of the males as a taxonomic character is discussed. = Museu de Zoologia da Universidade de Sgo Paulo; A1 = antennule; A2 = antenna; B2 = basipodal segment 2; Enp = endopod; Enp2, Enp3 = second and third endopodal segment; Exp = exopod; Exp3 = third exopodal segment; Md = mandible; Mxl = maxillule; Mx2 = maxilla; Mxp = maxilliped, P1. . . P6 = first to sixth leg; Pr = prosome, Ur = urosome.Fig. I. Ranges of the species of Oithona in coastal areas of Central and South America bordered by mangroves as they appeared to be before (A) and as they remain after (B) the present report. AL = 0 . alvarezi, CH = 0 . canhanhae, FS = 0 . fonsecae, HB = 0 . hebes, NT = 0 . neotropica, OG = 0. oligohalina, OR = 0. oraemaris, OV = 0. ovalis, OW = 0 . oswaldocruzi, SA = 0. sapucaiae.

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The naupliar development of Oithona oligohalina, Fonseca & Björnberg, 1976

Abstract: The naupliar stages of O~hona o~gohalina are described and compared with those ofO. ov~.

Cited by 2 publications

References 1 publication

Morphology of the naupliar stages of some Oithona species (Copepoda: Cyclopoida) occurring in Toyama Bay, southern Japan Sea

Morphology of the naupliar stages of some Oithona species (Copepoda: Cyclopoida) occurring in Toyama Bay, southern Japan Sea

Copepods of the Genus Oithona Baird, 1843 from mangrove areas of Central and South America

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