A New Record of Parasitism in the Fantail Darter, Etheostoma flabellare Rafinesque (Percidae: Etheostomatini)

1987 ◽  
Vol 73 (5) ◽  
pp. 940
Author(s):  
Stephen R. Moulton II ◽  
Lawrence W. Hinck ◽  
George L. Harp
Keyword(s):  
New Record ◽  
Etheostoma Flabellare ◽  
Fantail Darter

Changes in the abundance of small littoral-zone fishes in Lake Mendota, Wisconsin

1989 ◽  
Vol 67 (12) ◽  
pp. 2910-2916 ◽  
Author(s):  
John Lyons
Keyword(s):  
Littoral Zone ◽  
Myriophyllum Spicatum ◽  
Single Species ◽  
Lake Mendota ◽  
Nearshore Area ◽  
Etheostoma Flabellare ◽  
Fundulus Notatus ◽  
Environmentally Sensitive ◽  
Fantail Darter ◽  
Banded Killifish

Since 1900, major changes have occurred in the assemblage of small littoral-zone fishes (maximum total length < 150 mm; usually encountered in the nearshore area) that inhabits Lake Mendota, Wisconsin. A diverse assemblage that included several environmentally sensitive species has been replaced by an assemblage dominated by a single species, the brook silverside (Labidesthes sicculus), whose abundance fluctuates dramatically from year to year. Between 1900 and 1981, eight species, the pugnose shiner (Notropis anogenus), common shiner (Notropis cornutus), blackchin shiner (Notropis heterodon), blacknose shiner (Notropis heterolepis), tadpole madtom (Noturus gyrinus), banded killifish (Fundulus diaphanus), blackstripe topminnow (Fundulus notatus), and fantail darter (Etheostoma flabellare), disappeared from the lake. The blackchin shiner and banded killifish were the most abundant small littoral-zone species in 1914–1916, and remained common until the late 1960's. Their decline was associated with the invasion and explosive increase in abundance of an exotic macrophyte, the Eurasian water milfoil (Myriophyllum spicatum), in the mid-1960's. The decline and disappearance of the blackchin shiner and banded killifish in three other Wisconsin lakes was also associated with the invasion of Eurasian water milfoil. Changes in the assemblage of small littoral-zone fishes in Lake Mendota indicate environmental degradation in the nearshore area, and may have important implications for the entire fish community of the lake.

Seasonal changes in the critical thermal maxima of fantail (Etheostoma flabellare), greenside (Etheostoma blennioides), and rainbow (Etheostoma caeruleum) darters

1985 ◽  
Vol 63 (7) ◽  
pp. 1629-1633 ◽  
Author(s):  
Ihor Hlohowskyj ◽  
Thomas E. Wissing
Keyword(s):  
Seasonal Changes ◽  
Acclimation Temperature ◽  
Seasonal Differences ◽  
Etheostoma Flabellare ◽  
Significant Relationships ◽  
Critical Thermal Maxima ◽  
Etheostoma Blennioides ◽  
Fantail Darter ◽  
Rainbow Darter ◽  
Etheostoma Caeruleum

Seasonal critical thermal maxima (CTMax) were determined for greenside (Etheostoma blennioides), fantail (Etheostoma flabellare), and rainbow (Etheostoma caeruleum) darters. Mean CTMax values for field-acclimatized greenside darters ranged from 26.2 °C in March to 35.1 °C in September. The values for fantail and rainbow darters were 30.8–36.0 °C (March–July) and 30.0–36.4 °C (April–July), respectively. CTMax values for the three species were significantly correlated (P < 0.05) with field water temperature (greenside darter, r = 0.970; rainbow darter, r = 0.964; fantail darter, r = 0.968). Fish acclimated at 10 and 20 °C in the laboratory exhibited significant seasonal changes in CTMax, with the highest values occurring in the summer. Except for fantail darters tested in summer, the three species showed significant relationships between CTMax and acclimation temperature. Seasonal differences were also observed in the slopes of the relationships between CTMax and acclimation temperature. The highest slopes occurred in spring, autumn, or both. Differences in the tolerance of darters to high temperatures and adjustment of tolerance to high temperature may influence their distributions in streams.

scholarly journals Use of Environmental DNA to Determine Fantail Darter (Etheostoma flabellare) Density in a Laboratory Setting: Effects of Biomass and Filtration Method

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Ramon A. Guivas ◽  
Ben F. Brammell
Keyword(s):  
Environmental Dna ◽  
Filter Method ◽  
Laboratory Setting ◽  
Widespread Application ◽  
Filtration Method ◽  
Etheostoma Flabellare ◽  
Real Time Quantitative Pcr ◽  
Species Specific ◽  
Filter Clogging ◽  
Fantail Darter

Estimating fish abundance/biomass holds great importance for freshwater ecology and fisheries management, but current techniques can be expensive, time-consuming, and potentially harmful to target organisms. Environmental DNA (eDNA) has proven an effective and efficient technique for presence/absence detection of freshwater vertebrates. Additionally, recent studies report correlations between target organism density/biomass and eDNA levels, although widespread application of this technique is limited by the number of studies examining this relationship in various species and settings. Additionally, filter clogging is a commonly encountered issue in eDNA studies in environments with significant sediment and/or phytoplankton algae. Frequently, a sample must be split into multiple aliquots and filtered separately in order to process the entire sample. The present study examines both the relationship between biomass and eDNA and the effects of single versus multiple filter sampling on eDNA concentrations of fantail darters (Etheostoma flabellare) in a laboratory setting. Tank tests were performed in quadruplicate at four environmentally relevant fantail biomass levels. eDNA samples were collected and processed in parallel (one as a whole through a single filter and one in parts through multiple filters). Species-specific primers and a probe were developed for E. flabellare from cytochrome b sequences obtained from locally collected specimens, and real-time quantitative PCR was used to analyze eDNA levels at each biomass. Significant correlations were observed with increasing biomass for both methods, although this relationship was stronger for samples processed by the multiple filter method. These data should be useful in eDNA studies in which turbidity necessitates the use of multiple filters per sample as well as in the use of eDNA to estimate darter populations.

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