Occurrence of Cymbasoma longispinosum Bourne, 1890 (Copepoda: Monstrilloida) in the Curuçá River estuary (Amazon Littoral)

Leite, Natália da Rocha; Pereira, Luci Cajueiro Carneiro; Abrunhosa, Fernando Araújo; Pires, Marcus Alexandre Borges; Costa, Roberto Cezar Lobo da

doi:10.1590/s0001-37652010000300005

Cited by 14 publications

(19 citation statements)

References 3 publications

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“…rigidum (up to 1.62 mm). Leite et al (2007) found males and females of C. longispinosum in a tropical Amazon estuary in northern Brazil. This occurrence expands the knowledge of their distributional range.…”

Section: Resultsmentioning

confidence: 91%

New records of Monstrilloida Sars, 1901 (Crustacea: Copepoda) from Rio Grande do Norte (northeastern coast of Brazil)

2008

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During a series of zooplankton surveys carried out during 1984, off the south coast of the state of Rio Grande do Norte, Brazil, several species of monstrilloids were present in the samples. A total of 50 individuals of monstrilloid copepods were collected. These belong to four species (Monstrilla brasiliensis Suárez-Morales & Dias, Cymbasoma cf. longispinosum, Cymbasoma cf. rigidum, and Cymbasoma gracilis Gurney). The taxonomic complexes formed by the species C. cf. longispinosum and C. cf. rigidum in Brazilian waters are discussed. The lengths of the specimens are provided in order to contribute to studies and revisions of the specimens belonging to these species-complexes. The species Monstrilla brasiliensis is recorded for the first time in the Rio Grande do Norte coastal region, thus expanding its geographical range in the Brazilian northeastern coast. The results presented herein increase to four the number of species of Monstrilloida known from off Rio Grande do Norte state.

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Section: Resultsmentioning

confidence: 91%

New records of Monstrilloida Sars, 1901 (Crustacea: Copepoda) from Rio Grande do Norte (northeastern coast of Brazil)

2008

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“…2D), whereas this lobe is poorly developed in the new species and is represented by a small rounded lobe arising from the middle inner margin of the outer lobe, as occurs in C. cf. longispinosum from Brazil (Leite et al 2010: fig. 2H).…”

Section: Etymology the Species Is Warmly Dedicated To Mario Eduardo mentioning

confidence: 99%

“…49B) is a character shared by C. morii, C. chelemense, C. californiense, and C. sinopense but it differs from C. janetae (Mageed 2010), C. longispinosum (Bourne 1890) (original illustrations), and also from C. longispinosum from Norway (Sars 1921) and C. cf. longispinosum from Brazil (Leite et al 2010: fig. 2H).…”

Section: Etymology the Species Is Warmly Dedicated To Mario Eduardo mentioning

confidence: 99%

“…205Dd) and some additional characters discernible from their illustrations, like the large, wide anal somite and the presence of four caudal setae are reminiscent of the male of C. jinigudira. In addition, all males believed to represent species of the C. longispinosum species group in the literature, based either by their co-occurrence with conspecific females or by explicit designation (Giesbrecht 1893;Sars 1921;Martin Thompson 1973;Leite et al 2010) have four caudal setae and a similar genital complex, so these characters inclined us to attribute Dakin & Colefax's (1940) male specimen to C. jinigudira despite the fact that it was collected at the opposite side of the country. Pending further investigations it is here tentatively assigned to this species.…”

Section: Etymology the Species Is Warmly Dedicated To Mario Eduardo mentioning

confidence: 99%

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The Australian Monstrilloida (Crustacea: Copepoda) II. Cymbasoma Thompson, 1888

Suárez‐Morales

McKinnon

2016

Zootaxa

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Monstrilloid copepods collected during the past two decades from zooplankton surveys in reef and coastal areas of Australia were analyzed. A first contribution included the taxonomic analysis of three genera of the Monstrilloida, Monstrillopsis Sars, 1921, Maemonstrilla Grygier & Ohtsuka, 2008, and the newly described Australomonstrillopsis Suárez-Morales & McKinnon, 2014. In this document a taxonomic analysis of the species belonging to the genus Cymbasoma Thompson, 1888 is provided. A total of 28 species were found, most of them being undescribed. Seventeen species were described based on females only and eight on male specimens while three species were described from both sexes. Males of Australian species of Cymbasoma are distinguished by details of the genital complex, body size and proportions, ornamentation and processes of the cephalic region, number of caudal setae, and the characteristic structure or ornamentation of the genital lappets. Two main groups of males were distinguished on the basis of the number of caudal setae (3 or 4). As for the females, 20 of the 25 new species of Cymbasoma have fifth legs with an unarmed inner lobe and three setae on the outer lobe; one of these species (C. jinigudira sp. nov.) belongs to the C. longispinosum species-group (sensu Üstün et al. 2014). Another group, consisting of five species, has only two setae on the outer (exopodal) lobe. There were no Australian species of Cymbasoma with a single lobe. A species group, named after C. agoense, is proposed to include species sharing a globose body and a female fifth leg with a large endopodal lobe and an outer (exopodal) lobe with two setae. The females of the new species of Cymbasoma from Australia can be distinguished from their known congeners by unique combinations of characters including the type of body ornamentation, body size and shape, antennule armature and proportions, the presence of distinctive features of the legs 1–4, the presence/absence of processes on the genital compound somite, and the presence/absence of a constriction of the anal somite. We report the occurrence of two previously described species, C. agoense Sekiguchi, 1982 from Japan and C. bali Desai & Krishnaswamy, 1962 from India in Australian waters. Considering the addition of the 25 new species here described, the number of nominal species of the genus is now 66. A key to the Australian species of Cymbasoma (males and females) and a map showing their occurrence in Australia are also provided.

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“…In recent years, research into the region's zooplankton (Krumme and Liang 2004;Costa et al 2008) and especially its copepods Magalhães et al (2006Magalhães et al ( , 2009aMagalhães et al ( , b, 2011Leite et al 2010) has increased considerably. In temperate waters, the seasonal relationship of phytoand mesozooplankton populations often shows what resembles coupled oscillations which might suggest a classical Lotka-Volterra predator-prey relationship (Kiør-boe 1997), i.e., the phytoplankton populations are limited by predation, while the zooplankton (predator) populations are limited by the availability of feeding resources.…”

Section: Introductionmentioning

confidence: 99%

Relationships between copepod community structure, rainfall regimes, and hydrological variables in a tropical mangrove estuary (Amazon coast, Brazil)

2015

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The influence of rainfall and hydrological variables on the abundance and diversity of the copepod community was investigated on a monthly basis over an annual cycle in the Taperaçu mangrove estuary. In general, the results show that there were no clear spatial or tidal patterns in any biological variables during the study period, which was related to the reduced horizontal gradient in abiotic parameters, determined mainly by the morphological and morphodynamic features of the estuary. Nevertheless, seasonal and monthly trends were recorded in both the hydrological data and the abundance of the dominant copepod species. In particular, Pseudodiaptomus marshi (6,004.6 ± 22,231.6 ind m -3 ; F = 5.0, p \ 0.05) and Acartia tonsa (905.6 ± 2,400.9 ind m -3 ; F = 14.6, p \ 0.001) predominated during the rainy season, whereas Acartia lilljeborgii (750.8 ± 808.3 ind m -3 ; U = 413.0, p \ 0.01) was the most abundant species in the dry season. A distinct process of succession was observed in the relative abundance of these species, driven by the shift in the rainfall regime, which affected hydrological, in particular salinity, and consequently the abundance of copepod species. We suggest that this may be a general pattern governing the dynamics of copepod populations in the estuaries of the Brazilian Amazonian region.

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Occurrence of Cymbasoma longispinosum Bourne, 1890 (Copepoda: Monstrilloida) in the Curuçá River estuary (Amazon Littoral)

Cited by 14 publications

References 3 publications

New records of Monstrilloida Sars, 1901 (Crustacea: Copepoda) from Rio Grande do Norte (northeastern coast of Brazil)

New records of Monstrilloida Sars, 1901 (Crustacea: Copepoda) from Rio Grande do Norte (northeastern coast of Brazil)

The Australian Monstrilloida (Crustacea: Copepoda) II. Cymbasoma Thompson, 1888

Relationships between copepod community structure, rainfall regimes, and hydrological variables in a tropical mangrove estuary (Amazon coast, Brazil)

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