Lake acidification assessed using chironomid pupal exuviae

2011 ◽  
Vol 178 (4) ◽  
pp. 267-286 ◽  
Author(s):  
Les Ruse
Keyword(s):  
Lake Acidification ◽  
Pupal Exuviae

Lake acidification and the distribution of males and females of a planktonic copepod

2002 ◽  
Vol 28 (2) ◽  
pp. 992-995
Author(s):  
Jan-Erik Svensson ◽  
Ragnar Lagergren ◽  
Jan A. E. Stenson
Keyword(s):  
Lake Acidification ◽  
Planktonic Copepod ◽  
Males And Females

Teratogenesis in Lake Trout (Salvelinus namaycush) in an Experimentally Acidified Lake

1980 ◽  
Vol 37 (12) ◽  
pp. 2355-2358 ◽  
Author(s):  
L. A. Kennedy
Keyword(s):  
Lake Trout ◽  
Indigenous Population ◽  
Dry Weight ◽  
Salvelinus Namaycush ◽  
Embryonic Mortality ◽  
Lake Acidification ◽  
Mortality And Morbidity ◽  
Acid Lake ◽  
Untreated Water

Embryonic mortality and morbidity were seen in an indigenous population of lake trout (Salvelinus namaycush) inhabiting a lake experimentally acidified over a period of 3 yr to a mean summer epilimnion pH of 5.84. The pH of the hypolimnetic zone where trout spend the summer and undergo gametogenesis was 6.2. Although fertilization appeared to be successful, 59% of eggs incubated in the acidified lake had died or failed to gastrulate by 15 d, and 60% of the surviving embryos displayed gross anatomical malformations. Prior to hatching only 6% of the eggs contained embryos and all were anomalous. In a control lake, 92.9% of eggs contained normal embryos prior to hatching. Both the volume and dry weight of eggs of fish inhabiting the acidified lake were significantly less than eggs from the control lake. When gametogenesis and fertilization occurred in the acid lake but embryogenesis occurred in untreated water in the laboratory, there was a 50% reduction in the viability of eggs of one fish by day 31, compared to controls.Key words: lake acidification, teratogenesis, lake trout

Littoral macroinvertebrates as indicators of lake acidification within the UK

2009 ◽  
Vol 20 (S1) ◽  
pp. S105-S116 ◽  
Author(s):  
Ben McFarland ◽  
Fiona Carse ◽  
Leonard Sandin
Keyword(s):  
Lake Acidification ◽  
The Uk

Mallomonadacean microfossils provide evidence of recent lake acidification

Nature ◽  
1984 ◽  
Vol 307 (5952) ◽  
pp. 628-630 ◽  
Author(s):  
John P. Smol ◽  
Donald F. Charles ◽  
Donald R. Whitehead
Keyword(s):  
Lake Acidification

Paleoecological Analysis of Lake Acidification Trends in North America and Europe Using Diatoms and Chrysophytes

1990 ◽  
pp. 207-276 ◽  
Author(s):  
Donald F. Charles ◽  
Richard W. Battarbee ◽  
Ingemar Renberg ◽  
Herman van Dam ◽  
John P. Smol
Keyword(s):  
North America ◽  
Lake Acidification

scholarly journals New genus and species of Schizomyiina (Diptera, Cecidomyiidae) from Brazil

2021 ◽  
Vol 61 ◽  
pp. e20216187
Author(s):  
Barbara Proença ◽  
Valéria Cid Maia
Keyword(s):  
New Species ◽  
Host Plant ◽  
New Genus ◽  
Gall Midge ◽  
New Genus And Species ◽  
Mato Grosso ◽  
Male And Female ◽  
Pupal Exuviae ◽  
Gall Inducer ◽  
A New Species

A new gall midge genus, Distinctamyia gen. nov., and a new species Distinctamyia matogrossensis sp. nov. (Diptera, Cecidomyiidae) are herein described and illustrated (larvae, pupal exuviae, male and female). The new species induces conical, green, hairy and one chambered galls on leaf and bud of Simarouba amara Aubl. (Simaroubaceae). Gall-inducer specimens, samples of gall and host plant were collected at Parque Nacional da Chapada dos Guimarães, in the state of Mato Grosso (Midwestern Brazil).

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