Fresh Water Amphipods of North America

1907 ◽  
Vol 41 (484) ◽  
pp. 284-285
Keyword(s):  
North America ◽  
Fresh Water

Presence of the leech Placobdella costata in the south of the Iberian Peninsula

2014 ◽  
Vol 59 (2) ◽  
Author(s):  
David Romero ◽  
Jesús Duarte ◽  
Lucía Narváez-Ledesma ◽  
Miguel Farfán ◽  
Raimundo Real
Keyword(s):  
North America ◽  
Iberian Peninsula ◽  
Fresh Water ◽  
Mediterranean Area ◽  
Southern Spain ◽  
Freshwater Turtle ◽  
Emys Orbicularis ◽  
The North ◽  
Mauremys Leprosa ◽  
Fragmented Population

AbstractPlacobdella costata is a leech specific to freshwater turtle Emys orbicularis. Both genera are native to North America and have co-evolved and undergone dispersion through the Palearctic. The leech is present throughout the Mediterranean area, always associated with E. orbicularis. Their only known presence in the Iberian Peninsula is in the north and center of the peninsula. Here we present the first description of the leech in southern Spain (Andalusia) in association with a small fragmented population of fresh-water turtles in which E. orbicularis and Mauremys leprosa coexist. Unusually, the leech was found attached to the carapace of a male M. leprosa.

SUCCESSFUL REARING OF CENOCORIXA EXPLETA (HEMIPTERA: CORIXIDAE) IN FRESH WATER

1978 ◽  
Vol 110 (5) ◽  
pp. 559-559 ◽  
Author(s):  
S.G. Cannings
Keyword(s):  
North America ◽  
Fresh Water ◽  
Salinity Tolerance ◽  
Field Survey ◽  
Western North America

The water boatman Cenocorixa expleta (Uhler) is an inhabitant of saline ponds in the interior of western North America (Jansson 1972; Scudder 1976). In a field survey, Scudder (1969a) failed to find this species in ponds with surface conductivities less than 3900 μmhos/cm. Although it is apparently absent from fresh water, the osmotic responses of C. expleta are essentially those of a fresh water insect (Scudder et al. 1972). Also, salinity tolerance experiments carried out by Scudder (1969b) show that at 15°C adults of the species can survive almost a month in fresh water (less than 800 μmhos/cm) without food. However, it has not been shown that C. expleta can actually develop and breed successfully in fresh water.

Metazoan parasites of arctic char (Salvelinus alpinus L.) in a high arctic, landlocked lake in Canada

1978 ◽  
Vol 56 (2) ◽  
pp. 365-368 ◽  
Author(s):  
M. Beverley-Burton
Keyword(s):  
North America ◽  
Fresh Water ◽  
Salvelinus Alpinus ◽  
High Arctic ◽  
Arctic Char ◽  
Metazoan Parasites ◽  
Cornwallis Island

Seven species of parasitic metazoans were found in 71 arctic char (Salvelinus alpinus L.) taken in Char Lake, Cornwallis Island, N.W.T., Canada (74°42′ N, 94°50′ W): Tetraonchus alaskensis (Monogenea); Diphyllobothrium sp. (plerocercoids), Eubothrium salvelini, Eubothrium sp., and Proteocephalus longicollis (Cestoidea); Cystidicola cristivomeri (Nematoda) and Salmincola edwardsii (Crustacea: Copepoda). Except for S. edwardsii these reports, from a population of S. alpinus which is confined to fresh water, constitute new northerly distribution records for North America. Reports of P. longicollis and C. cristivomeri from S. alpinus in Canada have not been published previously.

A Species and Genus of Fresh-Water Bryozoon New to North America

Science ◽  
1934 ◽  
Vol 79 (2057) ◽  
pp. 510-510
Author(s):  
Ulric Dahlgren
Keyword(s):  
North America ◽  
Fresh Water
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