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M.F. Cashner and H.L. Bart Jr.
22001188 SOUTHEASTERN NATURALIST Vo1l7.( 117):,4 N3–o5. 41
Spawning Community and Egg Deposition for Three
Southeastern Nest-associate Minnows
Mollie F. Cashner1,2,* and Henry L. Bart Jr.2
Abstract - Nest association is a symbiotic reproductive strategy in North American minnows
in which a species spawns in the nest substrate of a host species. Host specificity is
unknown for the vast majority of nest associates, and presence of a spawning aggregation
over a particular nest site has is assumed to be evidence of egg deposition. In this study,
we surveyed multiple streams for spawning aggregations throughout the ranges of 3 nestassociate
species—Notropis baileyi (Rough Shiner), N. rubricroceus (Saffron Shiner), and
N. chlorocephalus (Greenhead Shiner). We paired direct observation of spawning behavior
with molecular verification of egg deposition. We observed all spawning aggregations in
association with a host nest. We identified eggs from a number of species not directly observed
over a particular aggregation site, although all species were known to aggregate as
nest associates. On 2 occasions, we documented Saffron Shiner males in aggregations over
Semotilus atromaculatus (Creek Chub) pit–ridge nests; however, we recovered no Saffron
Shiner eggs from the nests. Our findings demonstrate that field observations of nuptial aggregations
alone are not sufficient to confirm spawning associati on.
Introduction
North American minnows (Family Cyprinidae) exhibit a diverse array of breeding
strategies with various levels of parental care. In both broadcast (with either pelagic
or benthic eggs) and crevice spawning, parental care is limited to the egg-deposition
site, whereas substrate manipulation (nest building and pit forming), egg clustering,
and egg clumping entail more parental care investment by males via construction
of appropriate spawning substrate and often some level of egg-predator defense
(Johnston and Page 1992; Maurakis et al. 1990, 1992; Vives 1990). The symbiotic
reproductive strategy of nest association, in which a species spawns in a nest built
by another species, is an interesting combination of broadcast spawning and substrate
manipulation that is exhibited in multiple minnow lineages (Johnston and Page
1992). Nest associates vary in host type and specificity, but in all cases, hosts manipulate
the substrate to form a structure for egg deposition. Cyprinid nest associations
are mutualistic relationships between the host and nest associates (Johnston 1994a,
1994b; Johnston and Kleiner 1994; Peoples and Frimpong 2013;Walser et al. 2000).
Egg predation is the strongest selective pressure on this system; associate eggs are
protected when the host buries eggs and defends the nest against predators (Johnston
1994a, Maurakis et al. 1992, Vives 1990). Due to the large numbers of eggs in each
nest, host species benefit from a reduction in egg predation (dumping effect; Johnston
1Biology Department, Austin Peay State University, Clarksville, TN 37044. 2Department
of Ecology and Evolutionary Biology, Tulane University, New Orleans, LA 70118. *Corresponding
author - cashnerm@apsu.edu.
Manuscript Editor: Carol Johnston
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2018 Vol. 17, No. 1
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1994b, Peoples and Frimpong 2013). Nocomis spp. (chubs) mounds are prominent
features of the stream bed, and that, coupled with spawning aggregations composed
of hundreds of brightly colored fishes, may attract predators. Nest associates often
outnumber hosts; thus, a dumping effect on adult fishes might also play a selective
role in the evolution of this reproductive strategy.
Host specificity among nest associates is largely unknown. Notropis lutipinnis
(Jordan & Brayton) (Yellowfin Shiner) has been studied most rigorously, and
there is convincing evidence that it is an obligate nest associate of, Nocomis leptocephalus
(Girard) (Bluehead Chub; Clayton 2000; McAuliffe and Bennett 1981;
Wallin 1989, 1992). Field observations of, N. chlorocephalus (Cope), (Greenhead
Shiner), N. rubricroceus (Cope) (Saffron Shiner), and, Notropis baileyi Suttkus
& Raney (Rough Shiner) have identified several host taxa: Nocomis micropogon
(Cope) (River Chub), Nocomis leptocephalus (Girard) (Bluehead Chub),
Semotilus atromaculatus (Mitchill) (Creek Chub), and various Campostoma spp.
(stonerollers) (Cochran and Lyons 2001, Johnston 1991, Johnston and Kleiner
1994, Outten 1961).
At least 27 minnow species are known to use Nocomis nests as spawning
substrate (Johnston and Page 1992). Although participants in nest-association
spawning aggregations typically display nuptial coloration and reproductive behaviors,
empirical evidence of egg deposition by all species involved is generally
lacking. The community structure of spawning aggregations has primarily been
reported via in-stream observations of adults at or near a nest site (e.g., Cochran
and Lyons 2001, Johnston and Kleiner 1994, Outten 1961). Two studies have
documented egg deposition in a chub nest with subsequent rearing of collected
eggs to larval stage (Cooper 1980, Peoples et al. 2017), a relatively time-consuming
process. Recent model-based approaches to investigate evolutionary and
community-ecology components of nest association depend on published reports
of spawning aggregations to identify host specificity (e.g., Pendelton et al. 2012,
Peoples and Frimpong 2013); however, confirmation of egg deposition is absent
from much of the published literature. Determining whether species seen in aggregations
over a particular site are actually depositing eggs is crucial to the
understanding of nest association and host specialization.
Cyprinid eggs have few distinguishing morphological characters, and egg size is
similar among species with shared reproductive behaviors (Coburn 1986). In order
to identify cyprinid eggs to species, Cashner and Bart (2010) identified a reliable
molecular method using restriction-fragment length polymorphisms (RFLP) of the
maternally inherited mitochondrial coded ND2 gene double-digested with restriction
enzymes HinfI and HhaI. This method can be employed to distinguish closely
related species in a diverse community (Cashner and Bart 2010).
To date, no single study has attempted to survey multiple streams within the
range of multiple nest-associate species in order to assess egg-deposition success.
The objective for this study was to assess whether observations of putative spawning
aggregations are accurate measures of reproductive activity for 3 nest-associate
species (Rough Shiner, Saffron Shiner, and Greenhead Shiner).
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2018 Vol. 17, No. 1
Field-site Description
We sampled 4–6 streams for each focal species (Fig. 1, Appendix 1). All streams
were 2nd- or 3rd-order with diverse, immediately adjacent land uses. Rough Shiner
sites were in Mississippi (Pascagoula River System) and Alabama (Tennessee
River System) and had substrates dominated by sand with small gravel deposits.
Sites sampled for Saffron Shiner were all within the French Broad River System
in western North Carolina and had substrates primarily composed of cobble and
Figure 1. Sample localities and known ranges of Rough Shiner (squares and intermediate
gray), Saffron Shiner (circles and dark gray), and Greenhead Shiner (triangles and light
gray). Numerals designate egg-identification localities.
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slab. Greenhead Shiner sites ranged throughout the Catawba River System in North
Carolina. Sites in the lower Catawba River System contained more sand substrate
and were surrounded by agricultural land. We observed Castor canadensis Kuhl
(North American Beaver) activity in 1 or 2 streams for each focal species.
Materials and Methods
Stream surveys
We surveyed bank and in-stream transects of 0.3–0.5 km in each stream from
April to June over 6 years. We visited streams at least 2 times, and surveyed most
streams multiple times throughout the season. We identified spawning aggregations
(multiple nuptial individuals aggregated in a small area) during walking transects;
underwater observations were made when water clarity permitted, otherwise observations
were conducted from the bank using binoculars with polarized lenses. We
recorded the species engaged in spawning behavior (nuptial coloration, territoryholding,
spawning), water temperature, and substrate type at each putative spawning
aggregation. Our observations periods were 30–60 min, and we made video
recordings at most sites.
Egg identification
We targeted a subset of spawning sites for egg identification, and selection of
sites was opportunistic and dependent on availability of supplies. We collected eggs
from the substrate by placing an aquarium net downstream of an active area and
manually agitating the substrate. As the eggs floated downstream, they were captured
in the net. After collection from the net, we transferred the eggs to 95% ethanol
(ETOH). We changed the ETOH at least 2 times within the first 24 h to optimize
preservation. We created restriction-fragment banding-pattern libraries for each
community based on adult (known) specimens collected or observed in the immediate
area (Table 1) following protocols outlined in Cashner and Bart (2010). When
necessary, we employed a grid and a random-numbers table to select a subsample of
200 eggs (1000+ eggs could be collected from a single nest), and egg extraction and
amplification followed the protocol of Cashner and Bart (2010); however, due to
variation in amplification success for some species within the Saffron Shiner (i.e.,
Creek Chub) and Greenhead Shiner (i.e., Rosyside Dace) communities, we used
alternate amplification primers (ND2B-L and ND2E-H from Broughton and Gold
2000). We created RFLP libraries for Rough Shiner (ASN/GLN ND2 amplicons),
Saffron Shiner (BL/EH ND2 amplicons), and Greenhead Shiner (2 libraries: 1 from
each primer pair ND2 amplicon set). We included 2–20 individuals of each species
to design the reference library for each community (Table 1).
We identified eggs to species by comparing their RFLP patterns to those in the
reference library. We used the ND2 primer set appropriate for the source community
to amplify the eggs. Subsequent PCR products were subjected to a double-digest
with HinfI and HhaI, and the resulting fragments visualize via electrophoresis on
a 3% NuSieve/Agarose gel with a 100-bp (NEB) DNA ladder used as a size standard.
If egg RFLP banding patterns did not match any of our RFLP libraries, we
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M.F. Cashner and H.L. Bart Jr.
2018 Vol. 17, No. 1
direct-sequenced the eggs (see Cashner and Bart 2010 for primers and sequencing
conditions) and compared the results to known ND2 sequences on GenBank
(NCBI) for positive identification.
Results
We conducted a total of 138 surveys from early May to late June of 2005, 2006,
2007, and 2009. Water temperatures varied from 10.5 °C to 27 °C. We observed
28 spawning aggregations—9 in Rough Shiner communities, 13 in Saffron Shiner
communities, and 6 in Greenhead Shiner communities. In all cases, spawning aggregations
were in association with nest-building minnow species (Appendix 1).
We collected eggs from 10 spawning aggregations, and PCR success varied from
5% to 100%, with over 60% success for most (7) sites.
The focal nest associate species eggs were recovered from every Bluehead Chub
and River Chub nest sampled, but none were recovered from the 2 Creek Chub nests
sampled (Table 2). Moreover, Bluehead Chub and River Chub were not the most
numerous eggs identified in any of the collections, with nest-associating species
dominating egg numbers (Table 2). Egg composition and observed species composition
differed for every site; 50% of the time we recovered eggs of more species than
we observed in the spawning aggregation, and 50% of the time there were eggs of
Table 1. Species used to generate RFLP libraries for 3 nest-associate communities. The number of
individuals used per species is in brackets.
Rough Shiner community Saffron Shiner community Greenhead Shiner community
Notropis baileyi Suttkus & Notropis rubricroceus (Cope) Notropis chlorocephalus (Cope)
Raney (Rough Shiner) [10] (Saffron Shiner) [10] (Greenhead Shiner) [10]
Notropis longirostris (Hay) Notropis leuciodus (Cope) Notropis chiliticus (Cope)
(Longnose Shiner) [20] (Tennessee Shiner) [10] (Redlip Shiner) [8]
Notropis amplamala Pera & Notropis spectrunculus (Cope) Clinostomus funduloides Girard
Armbruster (Longjaw (Mirror Shiner) [8] (Rosyside Dace) [9]
Minnow) [10]
Notropis texanus (Girard) Luxilus coccogenis (Cope) Central Stoneroller [10]
(Weed Shiner) [10] (Warpaint Shiner) [10]
Lythrurus roseipinnis (Hay ) Campostoma anomalum Warpaint Shiner [10]
(Cherryfin Shiner) [10] (Rafinesque) (Central Stoneroller)
[10]
Luxilus chrysocephalus Semotilus atromaculatus Bluehead Chub [10]
Rafinesque (Striped Shiner) (Mitchill) (Creek Chub) [8]
[10]
Cyprinella venusta Girard Nocomis micropogon (Cope)
(Blacktail Shiner) [10] (River Chub) [10]
Hybopsis winchelli Girard Rhinichthys cataractae (Valenciennes)
(Clear Chub) [3] (Longnose Dace) [2]
Nocomis leptocephalus (Girard)
(Bluehead Chub) [10]
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fewer species than expected from direct observations (1 site had 5% PCR success,
and the only eggs recovered were of the focal nest-associate species, Table 2).
Discussion
We employed a combination of methods, from in-situ observations to laboratory-
based egg identification, to describe nest-site use and egg deposition by several
Table 2. Species observed in spawning aggregations compared to percent egg identification and percentage
of total eggs identified. Site ID number is referenced i n Figure 1.
Community Site ID Species observed Egg ID % (n)
Rough Shiner Martin Branch (1) Rough Shiner Striped Shiner 51% (110)
Rough Shiner 33% (72)
Bluehead Chub 16% (35)
Beaver Creek (2) Bluehead Chub Rough Shiner 53% (53)
Rough Shiner Striped Shiner 27% (26)
Bluehead Chub 20% (20)
Saffron Shiner South Fork Mills (3) Saffron Shiner Saffron Shiner 100% (2)
(26 May 2005) Tennessee Shiner
Central Stoneroller
Warpaint Shiner
River Chub
South Fork Mills Saffron Shiner Warpaint Shiner 42% (22)
(10 June 2006 -1) Tennessee Shiner Saffron Shiner 42% (22)
Central Stoneroller River Chub 8% (4)
River Chub Central Stoneroller 6% (3)
Tennessee Shiner 2% (1)
South Fork Mills Saffron Shiner Saffron Shiner 93% (43)
(10 June 2006 -2) Tennessee Shiner Warpaint Shiner 7% (3)
Central Stoneroller
River Chub
South Fork Mills Saffron Shiner Creek Chub 100% (57)
(23 May 2009)
South Fork Mills Saffron Shiner Creek Chub 100% (40)
(2 June 2009) Creek Chub
Greenhead Shiner Lippard Creek (4) Greenhead Shiner Central Stoneroller 52% (23)
Rosyside Dace Greenhead Shiner 27% (12)
Bluehead Chub 20% (9)
Ballard Creek (5) Greenhead Shiner Greenhead Shiner 49% (23)
Redlip Shiner Bluehead Chub 23% (11)
Rosyside Dace Central Stoneroller 6% (13)
Bluehead Chub Rosyside Dace 5% (11)
Redlip Shiner 2% (4)
Cox Creek (6) Greenhead Shiner Greenhead Shiner 67% (20)
Rosyside Dace Bluehead Chub 33% (10)
Bluehead Chub
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2018 Vol. 17, No. 1
nest-associating North American minnows. We documented egg deposition for
species known to spawn independent of a host (and thus considered facultative
nest associates), such as Campostoma anomalum Rafinesque (Central Stoneroller)
and Luxilus chrysocephalus Rafinesque (Striped Shiner), in mound nests built by
chub species. All documented egg deposition by Rough Shiner, Saffron Shiner, and
Greenhead Shiner occurred over mound nests of chubs, indicating these taxa are
likely obligate nest associates. We did not observe active chub males at all sites,
but nests were free of silt, which indicated ongoing maintenance. Chub males
are skittish and difficult to observe, and we made our best observations of their
behavior underwater. Our evidence supports a primary association with Bluehead
Chub or River Chub and secondary associations with pit-forming species such as
stonerollers. In all cases, chub eggs were not the dominant component of a nest,
supporting the selfish herd or dumping effect benefit to hosts in nest associations
(Johnston 1991, Peoples and Frimpong 2013, Shao 1997).
We found that visual observations of spawning-aggregation composition was
not sufficient to accurately describe egg deposition. In 100% of the nests sampled
for egg identification, species aggregating over the site did not completely match
the egg composition. Despite these discrepancies, all eggs collected were from
species observed in multiple spawning aggregations (Appendix 1). We did not
identify new nest-associate species in this study. Quantification and confirmation
of egg deposition is made more difficult by the temporal nature of spawning
aggregations. Variation in nest-associate aggregation communities compared to
egg-deposition success may be the result of nests housing eggs from multiple
spawning events over a series of days, or differential deposition-success at any
one given spawning aggregation.
There was considerable variation in PCR success across all nests sampled
(5–100%); however, we were able to identify over half of the eggs sampled for the
majority of nests. Inability to amplify some eggs may have been the result of eggpreservation
error or of fresh spawning events which did not allow enough time for
cell division to generate detectable quantities of DNA. At one site, we were unable
to identify any host eggs (South Fork Mills River, 10 June 2006, site 2). This result
was likely an amplification error: all eggs ~2 mm in diameter (nearly twice the
diameter of other eggs and hence likely to be hosts' eggs that had been deposited
earlier and thus had more time to develop) did not successfully amplify, indicating
there were River Chub eggs present despite lack of molecular evidence.
Nests with aggregations of individuals in peak nuptial coloration yielded eggs
from focal species except in the 2 Creek Chub pit–ridge nests. Eggs collected at
these sites were more uniform in size than at any other site, and all were identified
as Creek Chub eggs. Woolcott and Maurakis (1988) and Cochran and Lyons (2001)
both noted high-colored Saffron Shiner in association with Creek Chub pit–ridge
nests; however, neither study directly observed spawning or spawning behavior.
Moreover, based on these studies, Pendleton et al. (2012) identified Saffron Shiner
as a weak nest-associate species. Our data suggest that Saffron Shiner aggregated
over Creek Chub pits, but did not spawn at the nests we observed. In 1 active Creek
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Chub pit–ridge nest observed on 2 June 2009, aggressive behavior of the resident
chub seemed to prevent Saffron Shiner spawning. Saffron Shiner males in peak
nuptial coloration were able to aggregate un-assaulted over the active pit; however,
all non-red fish that approached the site were aggressively chased away by the resident
Creek Chub. Saffron Shiner females do not develop red body coloration during
spawning and were chased away as frequently as other Creek Chub individuals and
non-red fish in the area. Thus, while Saffron Shiners were present at both Creek
Chub nests we observed, our study demonstrates that the mere presence of Saffron
Shiners over a pit–ridge nest does not indicate successful egg deposition, and it is
unclear whether Saffron Shiners utilize Creek Chub nests for reproduction.
Vives (1990) suggested that Nocomis biguttatus Kirtland (Hornyhead Chub)
is a keystone species, and the evidence presented herein supports extending that
description to other members of the genus (Pendleton et al. 2012). Bluehead Chub
and River Chub mounds were present in nearly all observed spawning aggregations.
In some cases, though the chubs may no longer have been active at a particular
site, their mounds provided suitable substrate for pit–building stonerollers
and shiners. Chub mounds can be large and significant features of a stream bed,
and serve as egg-deposition sites for multiple species within a community (Lachner
1952). In the only 2 published studies on the subject, Johnston (1991) and
Johnston and Kleiner (1994) observed spawning aggregations of Greenhead Shiners
and Rough Shiners, and recorded spawning events in Bluehead Chub mound
nests. Outten (1961) observed multiple spawning aggregations of Saffron Shiner
over River Chub mound nests, while Woolcott and Maurakis (1988), Cochran
and Lyons (2001), and Jenkins and Burkhead (1993) observed individuals in high
color aggregating over Creek Chub pit–ridge nests and over apparently non-host
substrates. During the course of this study, we expanded the number of streams
surveyed and the number of spawning aggregations observed for these 3 species.
In combination with these data, egg identification revealed that aggregations
alone are not necessarily indicators of egg deposition at a putative spawning site.
Quantifying variation among eggs deposited in nests within a community may
lend insight into timing of spawning by various species and further our understanding
of host specialization among nest associates.
Acknowledgments
We thank Stefan Woltmann, Rebecca Blanton, John Johansen, Veronica DelBianco,
Jamie Orth, Anna Harvey, and Malorie Hayes for all of their help and support in the field.
Laboratory-based egg identification was conducted in David Hurley’s and Kyle Piller’s
labs, and E. Pierce Smith helped with initial RFLP protocol development. Funding was
provided by the American Museum of Natural History Theodore Roosevelt Memorial Fund,
American Society of Ichthyologists and Herpetologists Raney Fund, Graduate Women in
Science Eloise Gerry Fellowship, Highlands Biological Station Grant-in-Aid of Research,
and National Science Foundation Doctoral Dissertation Improvement Grant. Surveys were
conducted under the Tulane University Institutional Animal Care and Use Committee
(IACUC) protocol 0277-UT-C, and egg collection was conducted under the Tulane University
IACUC protocol 0327-UT-C.
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Appendix 1. Environmental and community data recorded for observed spawning aggregations. Arabic
numerals represent multiple spawning aggregations within a single observation date and stream.
Surveys which included sampleing for egg-composition analysis are indicated by an asterisk (*). Species
observed engaged in pit-building activity at spawning site are indicated by a dagger (†).
Focal species/
Stream Date Temp (ºC) Putative host Aggregation members
Rough Shiner
Martin Branch, Covington County, MS; 31.46458°N, 89.52943°W
6 May 2004 17.5 Bluehead Chub 1. Rough Shiner, Striped Shiner
2. Rough Shiner, Striped Shiner,
Bluehead Chub
*5 May 2006 21.5 Bluehead Chub Rough Shiner
30 April 2009 21.0 Bluehead Chub Rough Shiner, Striped Shiner,
Bluehead Chub
Beaver Creek, Covington County, MS; 31.47497°N, 89.40412°W
11 May 2004 20.0 Bluehead Chub Rough Shiner
*6 June 2004 22.0 Bluehead Chub *1. Rough Shiner, Bluehead Chub
2. Rough Shiner, Bluehead Chub
19 June 2004 22.0 Bluehead Chub Rough Shiner, Bluehead Chub, Striped
Shiner
6 May 2007 24.0 Bluehead Chub Rough Shiner, Bluehead Chub
Chenault Springs, Franklin County, AL; 34.36215°N, 87.54797°W
20 May 2004 19.5 Bluehead Chub 1. Rough Shiner, †Striped Shiner,
Largescale Stoneroller, Bluehead
Chub
2. Rough Shiner, †Striped Shiner,
Largescale Stoneroller, Bluehead
Chub
21 May 2004 20.0 Bluehead Chub Same sites and species composition as
20 May 2004
Saffron Shiner
Bent Creek, Buncombe County, NC; 35.50133°N, 82.59318°W
19 May 2005 16.0 River Chub Saffron Shiner, †Central Stoneroller,
Warpaint Shiner, River Chub
6 June 2005 17.0 River Chub †Central Stoneroller, Saffron Shiner,
Warpaint Shiner
17 May 2006 17.0 River Chub Central Stoneroller, Saffron Shiner,
Tennessee Shiner, Warpaint Shiner
7 June 2006 16.0 River Chub 1. Saffron Shiner, Tennessee Shiner
2. Saffron Shiner, Warpaint Shiner,
River Chub
North Fork French Broad, Transylvania County, NC; 35.14363°N, 82.83918°W
24 May 2005 14.0 River Chub Saffron Shiner, River Chub, Central
Stoneroller
South Fork Mills River, Henderson County, NC; 35.38004°N, 82.61356°W
24 May 2005 15.5 River Chub Saffron Shiner, Warpaint Shiner, River
Chub
25 May 2005 16.0 River Chub Saffron Shiner, Tennessee Shiner,
Warpaint Shiner, Central Stoneroller,
River Chub
Southeastern Naturalist
M.F. Cashner and H.L. Bart Jr.
2018 Vol. 17, No. 1
54
Focal species/
Stream Date Temp (ºC) Putative host Aggregation members
*26 May 2005 15.5 River Chub Saffron Shiner, Tennessee Shiner,
Central Stoneroller, Warpaint Shiner,
River Chub
31 May 2005 16 River Chub Saffron Shiner, Tennessee Shiner,
Central Stoneroller, Warpaint Shiner,
River Chub
*10 June 2006 20 River Chub *1. Saffron Shiner, Tennessee Shiner,
Central Stoneroller, River Chub
*2. Saffron Shiner, Tennessee Shiner,
Central Stoneroller, River Chub
*23 May 2009 14 Creek Chub Saffron Shiner
1 June 2009 15 Creek Chub Saffron Shiner
*2 June 2009 16 Creek Chub Saffron Shiner, Creek Chub
Greenhead Shiner
Lippard Creek, Lincoln County, NC; 35.53616°N, 81.14895°W
5 June 2005 18.5 Bluehead Chub 1. Greenhead Shiner, Rosyside Dace,
Bluehead Chub
2. Greenhead Shiner, Rosyside Dace,
Bluehead Chub
*1 June 2007 21.5 Bluehead Chub Greenhead Shiner, Rosyside Dace
Ballard Creek, Lincoln County, NC; 35.50107°N, 81.08724°W
*29 May 2005 16 Bluehead Chub 1. Greenhead Shiner, Redlip Shiner,
Rosyside Dace Bluehead Chub
2. Greenhead Shiner, Redlip Shiner,
Rosyside Dace Bluehead Chub
*3. Greenhead Shiner, Redlip Shiner,
Rosyside Dace Bluehead Chub
1 June 2007 20 Bluehead Chub Greenhead Shiner, Redlip Shiner,
Bluehead Chub
Mill Creek, McDowell County, NC; 35.63544°N, 82.19215°W
18 May 2005 18 Bluehead Chub Greenhead Shiner, †Central Stoneroller,
Bluehead Chub, Rosyside Dace,
Warpaint Shiner
16 June 2006 21 Bluehead Chub Greenhead Shiner
30 May 2007 20 Bluehead Chub Greenhead Shiner, Central Stoneroller,
Bluehead Chub, Rosyside Dace,
Warpaint Shiner
Cox Creek, McDowell County, NC; 35.8178°N, 82.0401°W
*27 May 2007 19 Bluehead Chub Greenhead Shiner, Rosyside Dace,
Bluehead Chub