Meeting the Challenge of Exotics in the Great Lakes: the Role of an International Commission

1991 ◽  
Vol 48 (S1) ◽  
pp. 171-176 ◽  
Author(s):  
Margaret Ross Dochoda
Keyword(s):  
Genetic Diversity ◽  
New Species ◽  
Great Lakes ◽  
Fish Species ◽  
Fish Community ◽  
Sea Lamprey ◽  
International Commission ◽  
Aquatic Community ◽  
New Fish Species

The Great Lakes Fishery Commission has traditionally supported the conservation of genetic diversity native to the Great Lakes, and counseled caution in adding new species to the Great Lakes aquatic community. Since extinction of sub-specific taxa and establishment of new species in the Great Lakes have proven irreversible, caution and conservatism are warranted. The Commission's mandate has served the Great Lakes well in preventing, controlling, and managing exotics. For example, the Commission (1) provides a forum for interjurisdictional consultation prior to planned introduction of new fish species; (2) represents fishery agency concerns for inadvertent introductions to outside interests, as in the case of ship ballast introductions; (3) champions the conservation of genetic diversity native to the Lakes; and (4) controls the exotic sea lamprey at levels which permit fishery agencies to attain their fish community objectives.

A new species of Pegasus (Syngnathiformes: Pegasidae) from the South China Sea

Zootaxa ◽  
2020 ◽  
Vol 4894 (4) ◽  
pp. 521-534
Author(s):  
RONGRONG ZHANG ◽  
XIN WANG ◽  
SHIMING WAN ◽  
SHAOBO MA ◽  
QIANG LIN
Keyword(s):  
New Species ◽  
South China Sea ◽  
Fish Species ◽  
South China ◽  
The South China Sea ◽  
The South ◽  
Genetic Studies ◽  
China Sea ◽  
A New Species ◽  
New Fish Species

A new fish species from the South China Sea, Pegasus nanhaiensis sp. nov., is described herein. The new species is readily distinguished from all other species of the genus Pegasus with the following characteristics: A rounded hump-like tubercle on each of dorsal plates I, II, and III. Noticeable hexagonal patterns on the dorsal carapace with a clear boundary, and two paired caudolateral plates overlapping the junctions between tail rings II and III, and between tail rings IV and V. The integrated evidence from both morphological and genetic studies indicates that P. nanhaiensis represents an independent lineage within the genus Pegasus. 

The role of social media in compensating for the lack of field studies: five new fish species for the Mediterranean Egypt

2021 ◽  
Author(s):  
Sara A.A. Al Mabruk ◽  
Abdulghani Abdulghani ◽  
Ola Mohamed Nour ◽  
Mohammed Adel ◽  
Fabio Crocetta ◽  
...  
Keyword(s):  
Social Media ◽  
Fish Species ◽  
Field Studies ◽  
The Mediterranean ◽  
New Fish Species

scholarly journals A new fish species of genus Garra (Teleostei: Cyprinidae) from Nagaland, India

2021 ◽  
Vol 13 (6) ◽  
pp. 18618-18623
Author(s):  
Sophiya Ezung ◽  
Bungdon Shangningam ◽  
Pranay Punj Pankaj
Keyword(s):  
New Species ◽  
Fish Species ◽  
Lateral Line ◽  
Brahmaputra Basin ◽  
New Fish Species

A species of the genus Garra is described from the Langlung River, Brahmaputra basin, Nagaland, India.  The new species is distinguished from its congeners in having weakly-developed unilobed proboscis, a distinct transverse lobe with 8–12 small sized unicuspid acanthoid tubercles, 30–32 lateral line scales, and 13–15 circumpeduncular scales.

Development of Sea Lamprey (Petromyzon marinus) Larvicides

1980 ◽  
Vol 37 (11) ◽  
pp. 2103-2107 ◽  
Author(s):  
John H. Howell ◽  
John J. Lech ◽  
John L. Allen
Keyword(s):  
Great Lakes ◽  
Fish Species ◽  
Petromyzon Marinus ◽  
Chemical Compounds ◽  
Sea Lamprey ◽  
Transferase Activity ◽  
Selective Toxicity ◽  
Glucuronyl Transferase ◽  
Glucuronide Conjugation

Larvicides are used to control sea lamprey (Petromyzon marinus) in the Great Lakes. These larvicides are useful because they are more toxic to sea lamprey than fish species found in the same habitat. The lampricides come from two classes of chemical compounds: (1) halonitrophenols, and (2) halonitrosalicylanilides. Selectivity of the larvicides appears to be based on the differences in the ability of sea lamprey larvae and fishes to detoxify and/or excrete the chemicals. Glucuronide conjugation is an important mechanism for detoxification of these larvicides by fish, and selectivity of larvicides may be due to differences in glucuronyl transferase activity between lamprey and fishes. If more detailed information were available on uptake, metabolism, excretion, and the biochemistry and physiology of lamprey as compared to fishes, it might be possible to design chemicals that would be more selective than those now in use.Key words: sea lamprey, larvicides, selective toxicity, uptake, metabolism, excretion, halonitrophenols

First record of albino lowland tapirs (Tapirus terrestris Linnaeus 1758) in an important Brazilian Atlantic Forest hotspot

Mammalia ◽  
2020 ◽  
Vol 84 (6) ◽  
pp. 601-604
Author(s):  
Mariana Bueno Landis ◽  
Luciano Candisani ◽  
Leticia Prado Munhoes ◽  
João Carlos Zecchini Gebin ◽  
Frineia Rezende ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Atlantic Forest ◽  
Scientific Research ◽  
First Record ◽  
Brazilian Atlantic Forest ◽  
Tapirus Terrestris

AbstractAlbinism is the absence of pigmentation or coloration and is rarely found in nature. In this study we examined photos and videos obtained by cameras traps in the Legado das Águas Reserve. In the images, we identified two albino lowland tapirs. The results highlight the necessity of understanding the genetic diversity of lowland tapir populations and the important role of the professional photography associated with scientific research.

scholarly journals On the role of local depth and latitude on surface warming heterogeneity in the Laurentian Great Lakes

Inland Waters ◽  
2021 ◽  
pp. 1-15
Author(s):  
Elisa Calamita ◽  
Sebastiano Piccolroaz ◽  
Bruno Majone ◽  
Marco Toffolon
Keyword(s):  
Great Lakes ◽  
Laurentian Great Lakes ◽  
Surface Warming ◽  
Local Depth

scholarly journals Nitrogenous compounds characterized in the deterrent skin extract of migratory adult sea lamprey from the Great Lakes region

PLoS ONE ◽  
2019 ◽  
Vol 14 (5) ◽  
pp. e0217417 ◽  
Author(s):  
Amila A. Dissanayake ◽  
C. Michael Wagner ◽  
Muraleedharan G. Nair
Keyword(s):  
Great Lakes ◽  
Sea Lamprey ◽  
Skin Extract ◽  
Great Lakes Region ◽  
Nitrogenous Compounds

Classification of Sea Lamprey (Petromyzon marinus) Attack Marks on Great Lakes Lake Trout (Salvelinus namaycush)

1980 ◽  
Vol 37 (11) ◽  
pp. 1989-2006 ◽  
Author(s):  
Everett Louis King Jr.
Keyword(s):  
Great Lakes ◽  
Lake Trout ◽  
Petromyzon Marinus ◽  
Attachment Site ◽  
Sea Lamprey ◽  
Salvelinus Namaycush ◽  
Oral Disc ◽  
Field Assessment ◽  
Sea Lampreys

Criteria for the classification of marks inflicted by sea lamprey (Petromyzon marinus) into nine categories were developed from laboratory studies in an attempt to refine the classification system used in field assessment work. These criteria were based on characteristics of the attachment site that could be identified under field conditions by unaided visual means and by touching the attachment site. Healing of these marks was somewhat variable and was influenced by the size of lamprey, duration of attachment, severity of the wound at lamprey detachment, season and water temperature, and by other less obvious factors. Even under laboratory conditions staging of some wounds was difficult, especially at low water temperatures. If these criteria are to be used effectively and with precision in the field, close examination of individual fish may be required. If the feeding and density of specific year-classes of sea lampreys are to be accurately assessed on an annual basis, close attention to the wound size (as it reflects the size of the lamprey's oral disc) and character of wounds on fish will be required as well as consideration of the season of the year in which they are observed.Key words: sea lamprey, attack marks, lake trout, Great Lakes

Fish community change in Lake Superior, 1970–2000

2003 ◽  
Vol 60 (12) ◽  
pp. 1552-1574 ◽  
Author(s):  
Charles R Bronte ◽  
Mark P Ebener ◽  
Donald R Schreiner ◽  
David S DeVault ◽  
Michael M Petzold ◽  
...  
Keyword(s):  
Great Lakes ◽  
Native Species ◽  
Fish Community ◽  
Lake Trout ◽  
Community Change ◽  
Osmerus Mordax ◽  
Rainbow Smelt ◽  
Additional Species ◽  
Community Agencies ◽  
Natural Reproduction

Changes in Lake Superior's fish community are reviewed from 1970 to 2000. Lake trout (Salvelinus namaycush) and lake whitefish (Coregonus clupeaformis) stocks have increased substantially and may be approaching ancestral states. Lake herring (Coregonus artedi) have also recovered, but under sporadic recruitment. Contaminant levels have declined and are in equilibrium with inputs, but toxaphene levels are higher than in all other Great Lakes. Sea lamprey (Petromyzon marinus) control, harvest limits, and stocking fostered recoveries of lake trout and allowed establishment of small nonnative salmonine populations. Natural reproduction supports most salmonine populations, therefore further stocking is not required. Nonnative salmonines will likely remain minor components of the fish community. Forage biomass has shifted from exotic rainbow smelt (Osmerus mordax) to native species, and high predation may prevent their recovery. Introductions of exotics have increased and threaten the recovering fish community. Agencies have little influence on the abundance of forage fish or the major predator, siscowet lake trout, and must now focus on habitat protection and enhancement in nearshore areas and prevent additional species introductions to further restoration. Persistence of Lake Superior's native deepwater species is in contrast to other Great Lakes where restoration will be difficult in the absence of these ecologically important fishes.

Optimizing Larval Assessment to Support Sea Lamprey Control in the Great Lakes

2003 ◽  
Vol 29 ◽  
pp. 766-782 ◽  
Author(s):  
Michael J. Hansen ◽  
Jean V. Adams ◽  
Douglas W. Cuddy ◽  
Jessica M. Richards ◽  
Michael F. Fodale ◽  
...  
Keyword(s):  
Great Lakes ◽  
Sea Lamprey
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