scholarly journals Touch too much: aquatic disinfectant and steam exposure treatments can inhibit further spread of invasive bloody-red mysid shrimp Hemimysis anomala

2020 ◽  
Vol 28 (2) ◽  
pp. 397-402
Author(s):  
Neil E. Coughlan ◽  
Shane O’Hara ◽  
Kate Crane ◽  
Jaimie T. A. Dick ◽  
Hugh J. MacIsaac ◽  
...  
Keyword(s):  
Hemimysis Anomala ◽  
Mysid Shrimp

Swarms of the Ponto-Caspian mysid Hemimysis anomala in Montreal Harbour, St. Lawrence River, Canada

2012 ◽  
Vol 38 ◽  
pp. 25-31 ◽  
Author(s):  
Yves de Lafontaine ◽  
Jérôme Marty ◽  
Simon-Pierre Despatie
Keyword(s):  
Hemimysis Anomala ◽  
St Lawrence River

The Control of Eyestalk Movements in the Mysid Shrimp Praunus Flexuosus

1975 ◽  
Vol 62 (2) ◽  
pp. 487-504
Author(s):  
D. M. NEIL
Keyword(s):  
Light Beam ◽  
Visual Cues ◽  
Light Conditions ◽  
Free Swimming ◽  
Light Reaction ◽  
Gravity Receptors ◽  
Light Stimuli ◽  
Necessary And Sufficient ◽  
Tracking Response ◽  
Mysid Shrimp

The compensatory eyestalk movements of intact and statocystless mysid shrimps Praunus flexuosus have been measured under a variety of light conditions. The results indicate that the statocyst organs in the urppods are the major gravity receptors, and that they are both necessary and sufficient to produce sinusoidal compensatory eyestalk movements. The addition of visual cues (vertical light beam, optokinetic stimuli) modifies the eyestalk response to some extent, but does not alter its general form. When the statocysts are removed, however, light stimuli become important orientational cues, and the eyestalks perform a tracking response which is considered to be the experimental counterpart of the dorsal light reaction of the free-swimming animal.

scholarly journals Hemimysis anomala G.O. Sars, 1907 expands its invasive range to Northern Ireland

2015 ◽  
Vol 4 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Kevin Gallagher ◽  
Robert Rosell ◽  
Louise Vaughan ◽  
Yvonne McElarney ◽  
Warren Campbell ◽  
...  
Keyword(s):  
Northern Ireland ◽  
Invasive Range ◽  
Hemimysis Anomala

The Mechanism of Statocyst Operation in the Mysid Shrimp Praunus Flexuosus

1975 ◽  
Vol 62 (3) ◽  
pp. 685-700
Author(s):  
D. M. NEIL
Keyword(s):  
Body Tilt ◽  
Structural Constraints ◽  
Decapod Crustaceans ◽  
Before And After ◽  
Adequate Stimulus ◽  
Gravity Receptors ◽  
Mysid Shrimp

Analysis of the compensatory eyestalk responses of mysid shrimps before and after the removal of one statocyst has revealed, in the light of statocyst anatomy, that the two statocysts co-operate in their action at all angles of body tilt. Many features of statocyst operation in mysids are shared by decapod crustaceans, but an important difference exists between the geometries of the two statocyst systems. The consequences of this difference highlight the structural constraints on systems of statolithic gravity receptors for which shear magnitude is the adequate stimulus.

Marine and estuarine leeches (Hirudinida : Ozobranchidae and Piscicolidae) of Australia and New Zealand with a key to the species

2020 ◽  
Author(s):  
Eugene M. Burreson
Keyword(s):  
New Zealand ◽  
Endemic Species ◽  
Sea Turtles ◽  
Teleost Fishes ◽  
Mysid Shrimp

Marine leeches are sanguivorous parasites either on sea turtles (family Ozobranchidae) or on elasmobranch and teleost fishes (family Piscicolidae), with the exception of Mysidobdella, which may feed on mysid shrimp. The marine leeches of Australia and New Zealand are poorly known, especially those on teleost fishes. Collections of marine leeches from all major museums in Australia and New Zealand were examined, as well as many specimens sent to the author. Ozobranchus branchiatus and O. margoi were found on sea turtles in Australia. Seven genera and 14 species of fish leeches were found in Australia; 6 genera and 10 species of fish leeches were found in New Zealand. Two genera (Pontobdella and Branchellion) and four species (P. leucothela, P. moorei, B. australis and B. plicobranchus) occur in both Australia and New Zealand. No genus is endemic to Australia, but four species are endemic based on current records (Austrobdella bilobata, Austrobdella translucens, Trachelobdella leptocephali and Pterobdella platycephalus). Two genera (Bdellamaris and Leporinabdella) and three species (B. manteri, B. eptatreti, and L. digglesi) are endemic to New Zealand based on current records. The marine leeches of Australia and New Zealand are a mix of endemic species, those of tropical or subtropical origin, and those of subantarctic origin.

Polystyrene microplastics impaired the feeding and swimming behavior of mysid shrimp Neomysis japonica

2020 ◽  
Vol 150 ◽  
pp. 110660 ◽  
Author(s):  
Xiao Wang ◽  
Liuqingqing Liu ◽  
Hao Zheng ◽  
Mingxin Wang ◽  
Yuanxin Fu ◽  
...  
Keyword(s):  
Swimming Behavior ◽  
Mysid Shrimp

scholarly journals Habitat value of a developing estuarine brackish marsh for fish and macrocrustaceans

2003 ◽  
Vol 60 (2) ◽  
pp. 278-289 ◽  
Author(s):  
H Hampel ◽  
A Cattrijsse ◽  
M Vincx
Keyword(s):  
Carcinus Maenas ◽  
Environmental Parameters ◽  
Shore Crab ◽  
Total Biomass ◽  
Density Peak ◽  
Frequency Distributions ◽  
Species Dominance ◽  
Large Numbers ◽  
Mesopodopsis Slabberi ◽  
Mysid Shrimp

Abstract Marsh creation receives worldwide attention in mitigating loss of coastal wetlands and in management retreat of estuaries. In the Westerschelde, the former Selena Polder, south from the marsh of Saeftinghe, developed into the Sieperda marsh after several dyke breaches. Soon after the tides regained access to the polder, a tidal creek was formed. After 10 years, a developing marsh system was found adjacent to a mature marsh system. This situation offered the opportunity to compare the utilization by nekton species of a natural mature marsh with a recently created developing marsh under similar circumstances. Between April and October 1999, both the mature Saeftinghe marsh and the developing Sieperda marsh were sampled every 6 weeks on 2 consecutive days. Each sampling occasion covered the whole tidal cycle. The most important environmental parameters (water height, temperature, salinity, turbidity and dissolved oxygen) were similar in both marsh creeks. A distinct difference in nekton community structure between the two marshes was observed. The total biomass and densities of nekton species were higher in Saeftinghe. In Saeftinghe, a density peak occurred in July and was mainly due to large numbers of the mysid, Neomysis integer. In Sieperda, maximum abundance of the mysid, Mesopodopsis slabberi, caused the peak density in September. This difference in species dominance was observed in all samples. Biomass peaked in July in the mature marsh and in October in the developing marsh. Mysid shrimp (N. integer) and fish (mainly Pomatoschistus microps) were the main contributors to the biomass Saeftinghe. Herring, sprat (Clupeidae) and shore crab (Carcinus maenas) were more important in Sieperda. For P. microps, distinct differences in length–frequency distributions were noted between the marshes. While creek morphology influences the abundance and species composition of visiting nekton, the age of a marsh and its maturity are believed to be the prime factors in determining the habitat function of creek systems of developing and mature marshes.

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