The Freshwater co-occurrence of Eurytemora Affinis (Copepoda: Calanoida) and Manayunkia Speciosa (Annelida: Polychaeta): Possible relicts of a marine incursion

Croskery, Peter

doi:10.1007/bf00036503

Cited by 15 publications

(11 citation statements)

References 14 publications

(21 reference statements)

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“…Burkill and Kendall's (1982) in situ experiments suggested that E. affinis is capable of reproducing at 30%0 S, confirming laboratory experiments by Katona (1970), who recorded that this copepod reproduced at 33%0 S as equally successfully as at 5 or 20%0 S, and with no significant difference in generation times. In contrast, freshwater records for E. affinis are by no means infrequent (Croskery 1978). Heckman (1986) found breeding populations of E. affinis in freshwater areas of the Elbe estuary as well as in brackish-water areas.…”

Section: Discussionmentioning

confidence: 84%

Distribution and retention of the copepodEurytemora affinis hirundoides in a turbid estuary

Castel

Veiga

1990

Mar. Biol.

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Abstract. The spatial and temporal distribution of the copepod Eurytemora affinis hirundoides (Nordquist, 1888) in the Gironde estuary, southwest France, was investigated in 1976France, was investigated in , and between 1981France, was investigated in and 1983. The distribution pattern of the population bore a clear relationship to the patterns of water circulation and transport of particulate matter. Laboratory experiments suggested that E. affinis hirundoides is incapable of autonomous displacement against the direction of general circulation and behaves as passive particles. A major problem faced by species living in estuaries is that of the maintenance of endemic populations. Some authors have suggested that behavioural responses may play an important role in minimising population losses. Our study indicated that hydrodynamic processes are sufficient to explain the distribution and retention of E. affinis hirundoides, whose populations are retained in the estuary in the same manner as the suspended sediment. Since the outflow of particulate matter from the Gironde estuary to the sea is very sporadic, we hypothesize that most of the production of E. affinis hirundoides remains within the estuary, and does not fertilize the continental shelf, at least not in the form of particulate organic matter.

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Section: Discussionmentioning

confidence: 84%

Distribution and retention of the copepodEurytemora affinis hirundoides in a turbid estuary

Castel

Veiga

1990

Mar. Biol.

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“…Their ancestors may have been stranded during past, relatively recent, climatic (e.g., glaciations and marine transgressions) or eustatic (tectonic uplift) events. A freshwater relict is indicated when there is co-occurrence with unrelated taxa and both show close affinities with marine species in the region (e.g., Croskery, 1978; Schmidt Table 2 Numbers of polychaete species and genera (in parentheses) for each major habitat, arranged alphabetically by family Family Lake/River Estuary/Lagoon Inland Sea Oases/Springs Hyporheic zone Subterranean water Phytotelmata (Croskery, 1978;Hutchings et al, 1981;Schmidt & Westheide, 1999). Freshwater species of a third category are the temporary (either space or time) inhabitants of waters with fluctuating salinity such as estuaries and coastal lagoons, including many Nereididae, Spionidae, and the serpulids, Ficopomatus species.…”

Section: Phylogeny and Zoogeographymentioning

confidence: 99%

Global diversity of polychaetes (Polychaeta; Annelida) in freshwater

Glasby

Timm

2007

Hydrobiologia

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A literature review of Polychaeta (Annelida) including Aphanoneura (the oligochaete-like Aeolosomatidae and Potamodrilidae), living in freshwater yielded 168 species, 70 genera and 24 families representing all of the major polychaete clades, but less than 2% of all species. The best-represented families were, in order, Nereididae, Aeolosomatidae, Sabellidae, Spionidae and Histriobdellidae. Fourteen families were represented by a single species and genus. Regions supporting the highest diversity of freshwater polychaetes were in order, Palaearctic, Neotropical, Oriental, Nearctic, Australasian, and Afrotropical. More than half of all species and genera inhabitat lakes and rivers, followed by lagoons/ estuaries, which have a high proportion of euryhaline species, and inland seas. Less common, atypical polychaete habitats include subterranean waters, the hyporheic zone of rivers and plant container habitats (phytotelmata). At least three distinct ecological/ historical processes appear to account for the colonisation of continental waters: invasion of a clade prior to the break-up of Gondwana, as in Aphanoneura, Namanereis, Stratiodrilus, and Caobangia; relatively recent stranding of individual species (relicts); and the temporary visitation of euryhaline species.

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“…The species was then recorded in new localities, such as Lake St. Clair (Ontario, Michigan), St. Marys River (Ontario, Michigan), the Sevenmile Canal (Oregon), two lakes in northern Alaska, the Ottawa River, Cayuga Lake (New York), Simmon's Bayou (Mississippi), besides being collected again in Lake Erie (Hiltunen 1965;Britt 1965;Hazel 1966;Holmquist 1967;Mackie and Qadri 1971;Spencer 1976;Croskery 1978;Brehm 1978). Its distribution by that time covered the east-and west-coast river systems of North America, the Great Lakes region, and the coast of the Gulf of Mexico.…”

Section: Introductionmentioning

confidence: 99%

Manayunkia speciosa Leidy (Polychaeta: Sabellidae): introduction of this nonindigenous species in the Neotropical Region (Uruguay river, South America)

2010

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We report the migration of Manayunkia speciosa from its distribution in North America into the Neotropical Region (Argentina). We collected specimens from November 2007 to March 2009 in the lower Uruguay River-at 33°5.01 0 S 58°12 0 W, 33°5.9 0 S 58°25.2 0 W from sediments reaching densities of 2,890 ind. m -2 , at a mean abundance of 350 ind. m -2 . Introductions of nonindigenous species, resulting intentionally or accidentally from anthropic activities, cause significant changes in ecosystems. In aquatic environments, polychaetes are a key invasive group that increases the geographical range of several species through human activities. M. speciosa may have reached the Río de la Plata Basin through a shipping vector and thereafter the Uruguay River by self-navigation.

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The Freshwater co-occurrence of Eurytemora Affinis (Copepoda: Calanoida) and Manayunkia Speciosa (Annelida: Polychaeta): Possible relicts of a marine incursion

Cited by 15 publications

References 14 publications

Distribution and retention of the copepodEurytemora affinis hirundoides in a turbid estuary

Distribution and retention of the copepodEurytemora affinis hirundoides in a turbid estuary

Global diversity of polychaetes (Polychaeta; Annelida) in freshwater

Manayunkia speciosa Leidy (Polychaeta: Sabellidae): introduction of this nonindigenous species in the Neotropical Region (Uruguay river, South America)

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