Species of marine Isopoda (Crustacea, Peracarida) from southern Brazil

Moreira, Plínio Soares

doi:10.1590/s0373-55241972000100009

Cited by 10 publications

(2 citation statements)

References 13 publications

(4 reference statements)

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“…Sources for B, F, G, I, J, K, L, M, N, 0, P, S, U, and V are, respectively, 1975; Maine-Garz6n, 1946; Poore and Lew Ton, 1993; Giambiagi, 1922; Kumari and Shyamasundari, 1983; Poore and Lew Ton, 1993; Miers, 1881; Menzies and Miller, 1972; Nunomura, 1985; Monod, 1934;Moreira, 1972;Shen, 1955;Kussakin, 1982;and Pillai, 1963). A, Proportions of pereionite 4 width to body length in mm; B, pleotelson length to body length in mm; and C, pleotelson width to length in mm; of male (squares), female (triangles), and juvenile (circles) Synidotea laevidorsalis from Willapa Bay, Washington, San Francisco Bay, California, Gironde estuary, France, and paratypes of S. grisea and S. keablei indicated, respectively, by G and K and the same proportions (D, E, F) in mm, calculated from measurements of published illustrations of S. grisea (G), S. keablei (K), S. laevidorsalis (B, F, I, L, M, N, P, S, U), S. hanumantharaoi (J), and S. variegata (V, 0).…”

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confidence: 99%

Predicted Discoveries of the Introduced Isopod Synidotea laevidorsalis (Miers, 1881)

Chapman¹,

Carlton²

1994

Journal of Crustacean Biology

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confidence: 99%

Predicted Discoveries of the Introduced Isopod Synidotea laevidorsalis (Miers, 1881)

Chapman¹,

Carlton²

1994

Journal of Crustacean Biology

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“…Idotea , one of the largest genera within Idoteidae, has a cosmopolitan distribution (Rafi & Laubitz ), but in a biogeographic study, Brusca () showed that the genus is absent from the tropical seas in both the Pacific and the Atlantic oceans of the New World. Most of the Idotea species are endemic to one or a few coasts and are restricted to shorelines in Europe, North and South America, Australia, New Zealand and Asia (Naylor ; Moreira ; Brusca ; Poore & Lew Ton ; Wares ; Sano et al . ).…”

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confidence: 99%

A molecular phylogeny of the north‐east Atlantic species of the genus Idotea (Isopoda) with focus on the Baltic Sea

et al. 2016

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Today, the marine isopods of the genus Idotea Fabricius, 1798 consist of 26 accepted species. Most species can be found in the Northern Hemisphere. While some species have a cosmopolitan distribution, others are endemic to a few coastlines. In the Baltic Sea, Idotea species have a key role as important meso‐grazers. Only three species can be found in this brackish environment, I. balthica, I. chelipes and I. granulosa, while nine species are described from the whole European coast. The goal of the present study was to reconstruct the phylogeny of the genus Idotea and to test whether the Baltic low‐salinity tolerant species represent a single lineage within the genus. The phylogeny of north‐east Atlantic Idotea species was investigated based on a fragment of the nuclear gene 28S and the mitochondrial gene COI for eight Idotea species. The phylogenetic reconstructions showed that the genus Idotea might not be monophyletic. Neither I. linearis nor I. urotoma did belong to the separated and well‐supported Idotea clade of I. balthica, I. chelipes, I. emarginata, I. granulosa, I. metallica and I. pelagica. The three Idotea species found in the Baltic belonged to different lineages, with estimated COI‐based divergence time older than 7 Myr. This suggests that the tolerance to low salinity has likely evolved in the genus Idotea more than once.

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Behavioural and metabolic adaptations of marine isopods to the rafting life style

et al. 2006

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Rafting on floating objects is a common dispersal mechanism for many marine invertebrates. In order to identify adaptations to the rafting life style, we compared behavioural and metabolic characteristics of two isopods, the obligate rafter Idotea metallica and the facultative rafter Idotea baltica. In laboratory experiments, I. metallica showed low locomotive activity and a tight association to the substratum. Idotea baltica, in contrast, was more active with more frequent excursions in the surrounding water column. Oxygen consumption rates were similar in both species. Idotea metallica fed on zooplankton making this species widely independent of autochthonous food resources of the raft. Feeding rates and digestive enzyme activities were low in I. metallica. Reduced egestion rates may indicate slow gut passage and, thus, efficient resorption of nutrients. Efficient food utilization and the ability to accumulate high amounts of storage products, i.e. lipids, indicate a possible adaptation of I. metallica to low food availability or starvation. The feeding behaviour of I. baltica, in contrast, was more herbivorous and appeared wasteful and inefficient. Low lipid contents in I. baltica also indicate poor storage reserves. Thus, I. baltica requires a permanent access to food.

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Species of marine Isopoda (Crustacea, Peracarida) from southern Brazil

Cited by 10 publications

References 13 publications

Predicted Discoveries of the Introduced Isopod Synidotea laevidorsalis (Miers, 1881)

Predicted Discoveries of the Introduced Isopod Synidotea laevidorsalis (Miers, 1881)

A molecular phylogeny of the north‐east Atlantic species of the genus Idotea (Isopoda) with focus on the Baltic Sea

Behavioural and metabolic adaptations of marine isopods to the rafting life style

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