Some factors affecting the distribution of estuarine isopods (Crustacea)

Harvey, Clare E.; Jones, M. B.; Naylor, E.

doi:10.1016/0302-3524(73)90064-9

Cited by 24 publications

(15 citation statements)

References 36 publications

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“…In the Chafarinas Islands off Mediterranean Morocco they have been recorded from 0.0m down to 20.0 m on a variety of algae. Like Dynamene bidentata (Harvey et al 1973), Dynamene magnitorata adults were found to have a tolerance to high air temperatures, i.e., 38 °C (Holdich 1976). However, survival at 5 °C was much lower for Dynamene magnitorata compared to Dynamene bidentata (Holdich 1976) and this may be the reason it has not colonized more northerly regions.…”

Section: Resultsmentioning

confidence: 99%

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Distribution and species identification in the crustacean isopod genus Dynamene Leach, 1814 along the North East Atlantic-Black Sea axis

Vieira¹,

Queiroga²,

Costa³

et al. 2016

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Sphaeromatid isopods, such as Dynamene, are common and abundant members of the invertebrate fauna of littoral and shallow sublittoral substrates. Six species of Dynamene occur in the northern hemisphere. Only two species exist outside this range, in Australia. The distribution of the various species in the NE Atlantic-Black Sea axis has been controversial due to the difficulty in the identification of the different species. This has led to inaccurate records of their distribution, ultimately generating uncertain or faulty assessments on the biodiversity of these habitats. An update and a clarification about the distribution of this genus is therefore in order. In this study, we describe the distribution of Dynamene species in the light of new records from the NE Atlantic Ocean and its associated islands, and the Mediterranean, Black and Red Seas, and from re-examination of museum and several authors’ personal collections. Based on these observations, we extend the northern and southern limits of Dynamene bidentata (Adams); the western and southern limits of Dynamene magnitorata Holdich; the northern, eastern and western limits of Dynamene edwardsi (Lucas); and the eastern and western limits of Dynamene bifida Torelli. The range of Dynamene tubicauda Holdich is extended, but is still only known from the eastern Mediterranean. We also clarify the synonymy of Dynamene torelliae Holdich with Dynamene bicolor (Rathke), and the occurrence of Dynamene bicolor in the Black Sea. New distribution maps of the six Dynamene species are presented. Illustrated keys to the adult males and females of the northern hemisphere species are provided.

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Section: Resultsmentioning

confidence: 99%

“…Our observations extend the distribution of Dynamene bidentata further south, i.e., Akhfenir in Morocco and Tenerife and Gran Canaria in the Canary Islands. Because Dynamene bidentata can survive at temperatures up to 38 °C (Harvey et al 1973), it is possible that this species occurs further south.…”

Section: Discussionmentioning

confidence: 99%

Distribution and species identification in the crustacean isopod genus Dynamene Leach, 1814 along the North East Atlantic-Black Sea axis

Vieira¹,

Queiroga²,

Costa³

et al. 2016

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“…The ranges of fluctuation of temperature and salinity appear to be irrelevant in the control of the observed patterns of distribution since they are much lower than animals are able to survive without apparent damage (Naylor, 1955;Harvey et al, 1973). The differences in the physical parameters in the three zones are not thought to affect the distribution of the isopods.…”

Section: Discussionmentioning

confidence: 96%

Distribution of intertidal isopods in relation to geographical changes in macroalgal cover in the Bay of Biscay

Arrontes

Anadón

1990

J. Mar. Biol. Ass.

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The distribution of intertidal isopods with respect to algal species was investigated over a range of 250 km on the shores of north Spain. A survey of 25 localities included three zones with a distinct composition of algal species: a western zone comprising shores facing Atlantic waters and the outer part of the Bay of Biscay; a narrow transition zone (about 70 km in length); and an eastern zone extending to the inner part of the Bay of Biscay. Thirty two isopod species were collected, 11 of which were present in high densities. Response to geographical change was observed to occur clearly in three species, Ischyromene lacazei, Idotea pelagica and /. baltica, and to a lesser degree in /. granulosa; the former two and the latter two were abundant in the eastern and western zones respectively. All four species were found to be closely associated with macroalgae species which display geographical changes in abundance (e.g. Laminaria ochroleuca and Comllina elongata). In addition, Idotea species were found to inhabit a reduced number of algal species compared with other European shores. Spanish shore of the Bay of Biscay probably constitutes the geographic limit of the distribution of the four species. A sampling artefact might also be responsible to some extent for the patterns of distribution observed. Differences in the physico-chemical properties of sea water along the coast and circulation of coastal waters are not thought to influence the distribution of isopods.

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“…Often tolerance is only tested in dilute sea water to assess the ability of species to enter estuaries, but no decision in favour of types I1 or I11 can then be made (e.g. Wells, 1961 ; Lance, 1963 ; 1964; Sameoto, 1969; Thompson & Pritchard, 1969; Harvey, Jones & Naylor, 1973). Type I1 can have a largely extended plateau to both sides of the sea-water concentration as for the copepod Tipwpm f u l m , the brine shrimps ArtemM salina and Parartemia zietxiana, and the isopod Halmiscus searlei which tolerate equally well respectively 4 2 9 0 %~ S (Ranade, 1957), 10% seawater-saturated brine (Croghan, 1 9 5 8~) b), 6.2-267%, S (Geddes, 1975), and 10-1 1 0 %~ S ( (Dorgelo, 1974), the mysid Neomy.uk integer (Ralph, 1965)) and a fresh-water population of the isopod Mesidotea entomon (Lockwood & Croghan, 1957).…”

Section: Salt Tolerance In Crzcstacea and The Influence Of Temperaturmentioning

confidence: 99%

Salt Tolerance in Crustacea and the Influence of Temperature Upon It

Dorgelo

1976

Biological Reviews

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Some factors affecting the distribution of estuarine isopods (Crustacea)

Cited by 24 publications

References 36 publications

Distribution and species identification in the crustacean isopod genus Dynamene Leach, 1814 along the North East Atlantic-Black Sea axis

Distribution and species identification in the crustacean isopod genus Dynamene Leach, 1814 along the North East Atlantic-Black Sea axis

Distribution of intertidal isopods in relation to geographical changes in macroalgal cover in the Bay of Biscay

Salt Tolerance in Crustacea and the Influence of Temperature Upon It

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