Niche Partitioning of the Sympatric Yellowcheek Darter Etheostoma moorei and Rainbow Darter Etheostoma caeruleum in the Little Red River, Arkansas

Weston, Michael R.; Johnson, Ronald L.; Christian, Alan D.

doi:10.1674/0003-0031-164.2.187

Cited by 6 publications

(5 citation statements)

References 36 publications

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“…Hence, hypotheses that no difference would occur in their characteristics are rejected. The present results are consistent with previous studies indicating that spatial and temporal partitioning plays an important role in facilitating the coexistence of closely related fish species (Baker & Ross, ; Ross, ; Jepsen et al , ; Weston et al , ). The summer period is a key growth period for gadoids at these latitudes (Mello & Rose, ); hence, summer separation is probably key to coexistence.…”

Section: Discussionsupporting

confidence: 94%

“…Niche partitioning explains the coexistence of similar species in fish communities, most often through different diets (Ross, ). Partitioning may also occur in the three‐dimensional water column (Baker & Ross, ; Goldschmidt et al , ) and in different temporal or spatial usage of habitat (Jepsen et al , ; Sala & Ballesteros, ; Weston et al , ). Testing hypotheses about spatial and temporal habitat partitioning has historically been logistically difficult, but advances in biotelemetry enable quasi‐continuous monitoring of free‐swimming individuals in two or three dimensions over time (Sauer et al , ; Cote et al , ; O'Dor et al , ; Klimley et al , ).…”

Section: Introductionmentioning

confidence: 99%

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Examination of fine‐scale spatial‐temporal overlap and segregation between two closely related congeners Gadus morhua and Gadus ogac in coastal Newfoundland

Knickle

Rose

2014

Journal of Fish Biology

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The spatial and temporal movement patterns of sympatric juvenile Atlantic cod Gadus morhua and Greenland cod Gadus ogac were studied using high-resolution radio-acoustic positioning in a coastal area of Newfoundland during the summers of 2009 and 2010. A total of 20 fish (10 G. ogac and 10 G. morhua) were equipped with acoustic transmitters and monitored for periods up to 23 days. Most fishes showed high site fidelity with mean residence times of 12·4 (G. morhua) and 14·4 days (G. ogac). A few individuals showed a transient use of the study area, ranging distances up to c. 4 km. Mean daily home ranges [95% kernel utilization distributions (KUDs)] and core activity areas were significantly larger for G. morhua (3·8 and 0·5 ha) than for G. ogac (2·7 and 0·3 ha). Home ranges were not related to total length (LT ) for G. morhua but showed a weak positive relationship for G. ogac. Gadus morhua occupied larger areas during the day while G. ogac occupied slightly larger areas at night. Mean rates of movement for G. ogac and G. morhua ranged from 0·83 to 1·24 and 0·76 to 1·76 LT s(-1) , respectively, and were highest during crepuscular periods. Overall, G. morhua were wider ranging, moved at faster rates and were active throughout the diel cycle compared to G. ogac of the same size. It is suggested that differential use of space and activity periods plays an important role in the successful coexistence of these two species.

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Section: Discussionsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Examination of fine‐scale spatial‐temporal overlap and segregation between two closely related congeners Gadus morhua and Gadus ogac in coastal Newfoundland

Knickle

Rose

2014

Journal of Fish Biology

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“…Yellowcheek darter densities were highly variable, which is similar to previous findings (Wine et al, 2008;Weston et al, 2010). The densities we found were within the range, but typically on the lower end, of those found in previous studies (Wine et al, 2008;Weston et al, 2010). However, we used a different kick seine sampling approach, and did not employ a density correction factor such as that used in previous studies (Robison and Harp, 1981;Wine et al, 2008).…”

Section: Discussionsupporting

confidence: 91%

“…Standard error, 95% confidence interval, and sample size (n; number of riffles per site) are also shown. Yellowcheek darter densities were highly variable, which is similar to previous findings (Wine et al, 2008;Weston et al, 2010). The densities we found were within the range, but typically on the lower end, of those found in previous studies (Wine et al, 2008;Weston et al, 2010).…”

Section: Discussionsupporting

confidence: 90%

Occupancy and Abundance Modeling of the Endangered Yellowcheek Darter in Arkansas

Magoulick¹,

Lynch²

2015

Copeia

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“…Weston et al . () found a positive correlation between embeddedness and the density of E. caeruleum, which commonly forages on the surface of the substrate rather than in the interstitial spaces. Thus, in spite of moderately elevated embeddedness , E. caeruleum may persist in sufficiently high densities to provide hosts for E. dilatata and facilitate its presence.…”

Section: Discussionmentioning

confidence: 99%

Associations between stream hydrogeomorphology and co‐dependent mussel–fish assemblages: evidence from an Ohio, USA river system

Bey

Sullivan

2014

Aquatic Conservation

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Understanding linkages among fluvial geomorphology, habitat, and aquatic biota is critical for effective stream ecosystem conservation. However, composite effects of hydrogeomorphic adjustment and condition, which collectively represent channel stability, on freshwater mussel and stream fish assemblages remain unresolved. Associations between stream hydrogeomorphic characteristics (channel geometry, substrate composition, stream flow) and mussel and stream fish assemblages were explored at 20 study reaches characterized by riffle–pool interfaces (RPIs) in Ohio, USA. At a coarse resolution using categorical classifications of equilibrium (i.e. stable) vs. adjusting (i.e. unstable) RPIs, overall fish and darter density was greater at adjusting RPIs (P = 0.048 and P = 0.024, respectively). Conversely, fish species richness was 1.2× greater at equilibrium than adjusting RPIs (P = 0.047). Analysis of quantitative hydrogeomorphic data collected with fine‐resolution surveys showed that hydrogeomorphic parameters explained from 20% (darter assemblage evenness) to 55% (density of mussels known to use darters as hosts) of the variation observed in all assemblages. Drainage area was significant in most models with variable influence: R2 = 0.10 for darter species richness to R2 = 0.41 for Simpson's diversity index of mussels with darter hosts. Other important predictor variables included embeddedness, velocity, shear stress, roughness, channel dimensions, and sediment size. Whereas coarse‐level fluvial geomorphic classifications may be meaningful for fish, they appear less so for mussels. Fine‐resolution quantitative hydrogeomorphic variables provided substantially more information for both assemblages, although hydrogeomorphology–fish and hydrogeomorphology–mussel relationships were not consistent. Some of the strongest relationships related to mussels that use darters as hosts, suggesting that these species are particularly sensitive to hydrogeomorphic conditions. Collectively, these results indicate that fluvial geomorphic condition and characteristics can simultaneously influence co‐dependent stream biota. Stream conservation and management plans that include explicit hydrogeomorphic surveys may appreciably benefit cohabitating freshwater fish and mussel assemblages. Copyright © 2014 John Wiley & Sons, Ltd.

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Niche Partitioning of the Sympatric Yellowcheek Darter Etheostoma moorei and Rainbow Darter Etheostoma caeruleum in the Little Red River, Arkansas

Cited by 6 publications

References 36 publications

Examination of fine‐scale spatial‐temporal overlap and segregation between two closely related congeners Gadus morhua and Gadus ogac in coastal Newfoundland

Examination of fine‐scale spatial‐temporal overlap and segregation between two closely related congeners Gadus morhua and Gadus ogac in coastal Newfoundland

Occupancy and Abundance Modeling of the Endangered Yellowcheek Darter in Arkansas

Associations between stream hydrogeomorphology and co‐dependent mussel–fish assemblages: evidence from an Ohio, USA river system

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