THE DISTRIBUTION AND

SAMPLING GEAR VULNERABILITY

OF THE

( ASP RELLA)

IN MINNESOTA

Konrad Schmidt

North American Native Fishes Association

10 March 1995

Abstract: Recent stream survey results and historical records compiled in the Minnesota Natural Heritage Program database were reviewed to determine the distribution and sampling gear vulnerability of the crystal darter (Crystallaria asprella) in the Mississippi River Basin of southeastern Minnesota. Including Wisconsin boundary rivers shared with Minnesota, the species has been reported from five major watersheds within the basin at 22 localities which encompass five Minnesota and six Wisconsin counties. Survey gears which have successfully sampled crystal darters include seines, boom and stream electroshockers, and deep water trawr nets. Introduction The crystal darter (Crystallaria [] asprella)

reaches the extreme northern edge of its range in southeastern

Minnesota (Lee et a1 1980) where it has been reported from the

St. Croix (Fago 1986), Zumbro, and Mississippi Rivers. In Wis- consin, the species has also been reported from the Mississippi

River drainage in the Red Cedar, Chippewa and Trempealeau Rivers

(Becker 1983). Regionally, the crystal darter is proposed for

Threatened status in Minnesota and listed Endangered in Wisconsin

(Schmidt 1995). In 1994, surveys were conducted for the crystal

darter in Pools 4, 5A, 6, 7, and 9 of the Mississippi River.

These results were pooled with all known occurrences of the

crystal darter in Minnesota to illustrate distribution, and also,

provide a review of sampling gears and methods which have been

used to collect the species.

Methods and Materials Both diurnal and nocturnal surveys were conducted at 31

stations in four Minnesota and three Wisconsin counties from mid

September to mid November. Sampling gears consisted of a boom

shocker and four types of seines (Table 1).

Table 1. Survey gears, methods, and approximate maximum depth sampled in Mississippi River Pools 4 - 9 during 1994. Codes: B - boom shocker, S - seine, D-day sample, N - night sample. ======Pool Gear Day/Night Max. Depth

4 S D 8+ 5 N/A N/A N/A 5A B,S D,N 8+ 6 B D 8+ 7 S D 5 8 S D,N 5 9 S D,N 5

2 Seine hauls were usually done downstream of wing dams or at

the head of islands. Seines consisted of both normal and bag type, quarter inch mesh, and ranged in lengths from 25 to 100 feet and depths from 4 to 6 feet. Wood poles were tied to the tow ropes at each end to provide some control in deep and swift currents. Seines were dragged in a downstream direction with one

boot hooked on the pole and firmly planted on the lead line to

keep the bottom edge in contact with the river bed. In deep

habitats, one hauler remained near shore at approximately chest depth, while the other swam out deploying the seine and thrusting

the pole downward as far as possible. All seine haul catches were sorted to species, tallied, and voucher specimens preserved

for the fish collection at the James Ford Bell Museum of Natural

History in St. Paul.

Boom shocking runs were conducted in habitats associated with wing dams, closing dams, and ripped-rapped banks in usually

a downstream direction. Polarized sunglasses were used during

the day to reduce surface glare and flood lamps at night to

illuminate the sample area in front of the boat. Due to the

abundance of large fish sampled and variable effectiveness on

darters with this gear, dip netters generally targeted only

species which resembled the crystal darter in shape, size, and

saddle patches.

Stations where the crystal darter was encountered were

photographed on 35 mm slides and video taped. Occurrences were

mapped on 7.5 minute quadrangles and transcribed for data entry

into the Minnesota Natural Heritage Program filing system.

Additional records were requested from several sources and simi­

larly compiled through February 1995.

3 Results and Discussion The 1994 Mississippi River surveys sampled 1582 fish repre- senting 49 species in 14 families. The emerald shiner was the most frequently sampled and abundant species which was present in

81.2 percent of the samples and comprised 24.7 percent of the

total catch. The rarest species included thirteen fishes which were each sampled once and represented by a single specimen

(Table 2).

Table 2. Mississippi River 1994 fish survey results. -=-======._======-======: ======-=-==--=--======FAMILY # Times Total Percent Percent Cc.moon Name (Sc ienti f ic Name) Sampled Catch Comp. Occur.

ACIPENSERIDAE - STLRGEO\IS shovelnose sturgeon (Scaphirhynchus platorynchus) 1 1 0.1 3.1

PCl... YOOONTIDAE - PADDLEFISH paddlefish (Polyodon spathula) 1 1 0.1 3.1

LEPISOSTEIDAE - GP!RS longnose gar (Lepisosteus osseus) 2 4 0.3 6.2

HIODCJ\lTIDAE - I"OJI\EYES mooneye (Hioden tergisus) 6 15 0.9 18.8

CLUPEIDAE - I-ERRII\GS gizzard shad (Dorosoma cepedianum) 10 137 8.7 31.2

MII\NJWS - CYPRINIDAE spotfin shiner (Cyprinella spiloptera) 14 96 6.1 43.8 common carp (Cyprinus carpio) 1 3 0.2 3.1 sil ver chub Macrhybopsis storeriana) 5 10 0.6 15.6 golden shiner (Notemigonus crysoleucas) 1 1 0.1 3.1 emerald shiner (Notropis atherinoides) 26 391 24.7 81.2 river shiner (Notropis blennius) 21 163 10.3 65.6 spottail shiner (Notropis hudsonius) 3 9 0.6 9.4 sand shiner (Notropis stramineus) 1 3 0.2 3.1 weed shiner (Notropis texanus) 1 1 0.1 3.1 mimic shiner (Notropis volucellus) 10 132 8.3 31.2 channel shiner (Notropis wickliffi) 1 4 0.3 3.1 fathead minnow (Pimephales promelas) 2 3 0.2 6.2 bullhead minnow (Pimephales vigilax) 4 9 0.6 12.5 minnow yay (Genus species - N/A) 1 9 0.6 3.1

4 Table 2. Continued. ======----===== :===--=--- FAMILY # Times Total Percent Percent Common Name (Scientific Name) Sampled Catch Comp. Occur. ------,---- SLCKERS - CATOSTCJ1IDAE quillback (Carpiodes cyprinus) 14 52 3.3 43.8 blue sucker (Cycleptus elongatus) 1 1 0.1 3.1 smallmouth buffalo (Ictiobus bubalus) 2 5 0.3 6.2 bigmouth buffalo (Ictiobus cyprinellus) 1 1 0.1 3.1 silver redhorse (Moxostoma anisurum) 8 25 1.6 25.0 river redhorse (Moxostoma carinatum) 4 18 1.1 12.5 shorthead redhorse (Moxostoma macrolepidotum) 5 17 1.1 15.6 redhorse yoy (Moxostoma species) 11 33 2.1 34.4

BLLLI-EAD CATFISHES - ICTPLLfUDAE yellow bullhead (Ameiurus natalis) 1 1 0.1 3.1 channel catfish (Ictalurus punctatus) 1 1 0.1 3.1 stonecat (Noturus flavus) 1 1 0.1 3.1 tadpole madtom (Noturus gyrinus) 1 1 0.1 3.1

PERCCFSIDAE - TRCUT-PERa-ES trout- (Percopsis omiscomaycus) 5 7 0.4 15.6

ATHERINIDAE - SILVERSIDES brook silverside (Labidesthes sicculus) 1 1 0.1 3.1

PERCICHTHYIDAE - TEl"PERATE BASSES whi te bass (Morone chrysops) 23 211 13.3 71.9

!3lJ\FISl-ES - CENTRARCHIDAE rock bass (Ambloplites rupestris) 3 5 0.3 9.4 bluegill (Lepomis macrochirus) 7 9 0.6 21.9 sma 11 mouth bass (Micropterus dolomieu) 5 22 1.4 15.6 largemouth bass (Micropterus salmoides) 2 2 0.1 6.2 white crappie (Pomoxis annularis) 1 1 0.1 3.1 black crappie (Pomoxis nigromaculatus) 4 5 0.3 12.5

PERCI-ES - (Ammocrypta clara) 6 12 0.8 18.8 crystal darter (Crystallaria asprella) 2 2 0.1 6.2 mud darter ( asprigene) 2 8 0.5 6.2 johnny darter (Etheostoma nigrum) 12 22 1.4 37.5 yellow Perch (Perca flavescens) 4 4 0.3 12.5 logperch (Percina caprodes) 13 44 2.8 40.6 slenderhead darter (Perc ina phoxocephala) 1 1 0.1 3.1 river darter (Percina shumardi) 3 4 0.3 9.4 sauger (Stizostedion canadense) 3 10 0.6 9.4 walleye (Stizostedion vitreum) 8 50 3.2 25.0

SCIAENIDAE - DRLNS freshwater drum (Aplodinotus grunniens) 6 14 0.9 18.8

Totals: 272 1582 100.0

5 Crystal darters were collected at two stations, comprised

0.1 percent of the total catch, and present in 6.2 percent of the samples. Both locations (Pool 5A: unnamed island - River Mile

[RM] 733.9 and Pool 4: Hershey Island - RM 758.7) were in the main channel downstream of a wing dam at depths of 8 or 9 feet in moderate to strong current over coarse sand to pebble substrate.

Sampling gear in both collections consisted of a bag seine 50 feet long and 4 feet deep.

This study also sampled species which are designated or proposed for Threatened, or Special Concern status in Minnesota and Wisconsin. These include the shovelnose sturgeon, paddle- fish, weed shiner, channel shiner, blue sucker, river redhorse, western sand darter, and mud darter.

In 1994, independent surveys produced five additional crys- tal darter collections in lower Pool 4 of the Mississippi River

(RM 754.3 - 758.7). These results were combined with the one collection from this study in that same stream reach to provide an overview of associated species representing 36 fishes in 10 families. The spotfin shiner, river shiner, emerald shiner, white bass, and logperch were the most frequently occurring species and present in 66.7 to 100.0 percent of the crystal darter collections (Table 3).

Table 3. Lower Pool 4 1994 crystal darter species association. ======FAMILY # Times Percent Common Name (Scientific Name) Sampled Occurrence

HIODONTIDAE - MOONEYES goldeye (Hiodon alosoides) 1 16.7

CLUPEIDAE - HERRINGS gizzard shad (Dorosoma cepedianum) 3 50.0

6 Table 3. Continued. ======FAMILY # Times Pe~cent Common Name (Scientific Name) Sampled Occu~~ence

MINNOWS - CYPRINIDAE spotfin shine~ (Cyp~inella spilopte~a) 4 66.7 common ca~p (Cyp~inus ca~pio) 1 16.7 silve~ chub Mac~hybopsis sto~e~iana) 2 33.3 eme~ald shine~ (Not~opis athe~inoides) 5 83.3 ~ive~ shine~ (Not~opis blennius) 6 100.3 sand shine~ (Not~opis st~amineus) 2 33.3 mimic shine~ (Not~opis volucellus) 3 50.0 bullhead minnow (Pimephales vigilax) 1 16.7

SUCKERS - CATOSTOMIDAE ~ive~ ca~psucke~ (Ca~piodes ca~pio) 1 16.7 quillback (Ca~piodes cyp~inus) 1 16.7 ca~psucke~ (Ca~piodes species) 1 16.7 white sucke~ (Catostomus comme~soni) 1 16.7 smallmouth buffalo (Ictiobus bubalus) 2 33.3 bigmouth buffalo (Ictiobus cyp~inellus) 2 33.3 silve~ ~edho~se (Moxostoma anisu~um) 1 16.7 ~ive~ ~edho~se (Moxostoma ca~inatum) 1 16.7 golden ~edho~se (Moxostoma e~yth~u~um) 2 33.3 sho~thead ~edho~se (Moxostoma mac~olepidotum) 3 50.0 ~edho~se yoy (Moxostoma species) 1 16.7

BULLHEAD CATFISHES - ICTALURIDAE tadpole madtom (Notu~us gy~inus) 1 16.7

PIKES - ESOCIDAE no~the~n pike (Esox lucius) 2 33.3

PERCOPSIDAE - TROUT- t~out-pe~ch (Pe~copsis omiscomaycus) 2 33.3

PERCICHTHYIDAE - TEMPERATE BASSES white bass (Mo~one ch~ysops) 4 66.7

SUNFISHES - CENTRARCHIDAE ~ock bass (Ambloplites ~upest~is) 1 16.7 bluegill (Lepomis mac~ochi~us) 2 33.3 smallmouth bass (Mic~opte~us dolomieu) 2 33.3 black c~appie (Pomoxis nig~omaculatus) 1 16.7

PERCHES - PERCIDAE weste~n sand da~te~ (Ammoc~ypta cla~a) 2 33.3 c~ystal da~te~ (C~ystalla~ia asp~ella) 6 100.0 mud da~te~ (Etheostoma asp~igene) 1 16.7 johnny da~te~ (Etheostoma nig~um) 2 33.3 yellow Pe~ch (Pe~ca flavescens) 2 33.3 logpe~ch (Pe~cina cap~odes) 4 66.7 ~ive~ da~te~ (Pe~cina shuma~di) 2 33.3 sauge~ (Stizostedion canadense) 1 16.7 walleye (Stizostedion vit~eum) 3 50.0

7 All known element occurrence records (EOR) of the crystal darter have been transferred (approximately) to stream maps

(Figures 1 - 7) which illustrate the species longitudinal distri­

bution in the Mississippi, St. Croix, and Zumbro Rivers. Data queries for additional information on localities, sampling gears,

specimen deposition, and survey sources can be requested from the

Minnesota Natural Heritage Program in St. Paul, MN.

The Mississippi (RM 733.8/733.9 - 758.7) from lower Pool 4 -

Pool 5A (Figure 5) had the most occurrences at 10, maximum number

of specimens sampled in a single collection (13 at RM 754.3 and

11 at RM 733.8), and greatest replication of collections made at

the same site (3 at RM 733.8) which encompassed a sampling period

from 1980 - 1994. The Zumbro River (Figure 2) was second in the

number of occurrences at five, but also had three crystal darter

collections at the same station (RM 34.0) from 1984 - 1993. Two

collections have been reported from the lower St. Croix River

(Figure 1) and is the most northerly distribution for the spe­

cies.

The crystal darter has not been reported from Mississippi

River Pools 1 - 3, 7, upper 9, or lower reaches of larger tribu­

taries (i.e., Minnesota, Cannon, Whitewater, and Root Rivers).

There are also no occurrences reported from Lake Pepin, middle

and lower Pool 5, lower Pool 5A, middle Pool 6, and middle and

lower Pool 8. However, some of these locations (e.g., Lake Pepin

and most of Pool 8) may not have sufficient wing dams, current,

or substrates which provide suitable habitats for the crystal

darter.

8 ~ I 1 i G

CHls..a C.C vOU .. •• o " .lSH'..,.;c;~ C lio -~ ou.,;; · l? ~

~~\1 '--, ,,;.r ' )

BOATING REGULATIONS Slow Soeed Zone No Planing tram N S P Dam at Tavlors Falls to moulh 0' Apple Rive,

to MIssIssippi River

LEGEND

.. Campsite Y Outfitter • Access • Rest Area Rapids Drinking Water River Mile

Scale of Statute Miles

-(\.J

)

(~,- 1,..-. FIGURE 2e ZUMBRO RPiER ~YSTAL DARTER )CXD.JRRENCES ( 5) ~ PEkrOO: 1961 - 19p3 \I ,-,'

) _"J '"I i f II

1111 IIMHI ,I 1)(ll lI r: i ~ ./~ J" J I: ,( "-: ~_~I 'V ,., l IIMRRO lt. '. Ort j ''\, I"~ ~\ ~' " 1"'9"/ / '\ '9~ ~? <"'\" ['In" '(1 ~-'2 I?u" I '\ Iff, l_'-l I ff ) (;"'<'1'1( ~~' // J " .l ( ) . ./ ' (> "..j IIAIlIWI,I(I{)11 I ,,0-<'- ref 61~ ( ~ ..\ R,;'lnrh ,J )

WABASHA COUNTY WINONA rOl JNl Y , 1 "'" 1 - .. +~ I] I PO";O" " I

~ ----t-+" - ' ~1 2 ® '?r'>~. 3Vj /'

(i.f \ -.L .., ~.'" ;,;+. I I 111 r'.. : 'I - 1 ZUMBRO RIVER LEGEND J .. Campsite :~~~""ll r A Private Campground ~ I i ~ Outfitter r-- 81s • Access l ~ I ~ I ~I~ • Rest Area I Rapids ! I w Drinking Water River Mile 1 State Forest I n Land I ",.- ,'(? I SItVFR Scale of Statute Miles \ ( ~ -~ - ,pVol-l,/.- 1!:J,ld· ", ~ , ~ ~ I c.SCAOE .. ·,II"II I"I" ·"·lh,,I\'I'IIII,,,, · \~~i ! ",h'ntl \id Pl''t '~'C"" t ., '.' I, •. ,,~. 'I' f'u.I .. , "<01 d, L(n h,.d " I \. " . ,I. " ,' I." ,t.. ·• '. ,I •. 1, 1'1, I~" IO.'r, t .. ,n ( Hrlel' r, ., 11 "",lln HI-O"II''''''1, I ' ~ I , ,I, ",,,I 111,·1 ... 11 ., \1Il1I 1"lI r hn:u "-... '1,1,,"j.': ... ·i 't 1p rn.·II( -1 , '" I)" [I"1f '""" I( p i ,h .. lI .lo' n u, \1,' 11,11111 1:1 -,,, I It ' .'!1~1 I II '-- '1/1'1I1'I1/"I .I ... ,,, ,f,,,.f, FI GURE 3" MISSISSIPPI RIVER (A) ffiYSTAL DARTER OCCURRENCES (1)

SAMPLING PERIOD: 1991 PR O CEDURE FOR USING NAVIGA TI ONAL LOCKS

1. LOCKAGE S IG NA LS 3. LOCKING THRO UGH ~ 1 r,N' l LJr VICf I IHIIi siona l (Ol e1) TRAf llC SIGNAL S \

rlow.----, Upo!l . (',,.,,,11"10 O'f'f'f'\ 1'9"'1 Ilffl!' .... ,..·(1 "' ... "" , ,'lin I,,,, ~ 1',·1 t,f).:;,em ... "",.. "'00''''0 I"".... c:.11""~ .,llu,U J. ~ "... , r' " •.. ,..... ~llprl!l ,\lll l'''''' h 1'1 I." ~ "'01"11,, .I0 r> p.lf1 ... "h~!f <;'0l~1t h<1,, ' o;flflUlrl f"",,,··ldh.,I'l.lflrl ,,, n<1r'flll""""""',. ·rll·.,I 'A-ll ·1 , ,n,,' npl"'rtllll" ' n;'tv <:.oQrlAI I", " !.o>{ ~ .11)(' t, ~ 111,lhno <;'0"'" O"Iw(1 I,. ~ •. 11., 'l1hf'f I'" f'lll l "'.1 10,--,., I.' " I' " , .. ,· ... "1'.'.- I• ..,. It'\<. , ." 11')r;J1f',1 '" /1,,.1 1111'11' I,r' lI)!.ti'l "1I1l 10 h ~ I'r 11l ;11 ,,'I <; <; 1' .... 0 1' . .. If'II ',"'I'" o., l'ill I'''' :II "iI I,,, II'" a n d ~ /. ,, 1' " .11"'1I1",,<)<;..{11' Ihl'II";'I1 1":1 .. 0"' 1', ., h""· " ',I,." ,'.ll" ,1 " r'lQf'f"!lrlln<:'! ... ("h,)""I('f"" ,r>f,'I1',·<:,f,·ct,·.1'·"oh,,.. ., I< 1.1 1" ( . ,llol{'l I'" ~ N "floul'" tv> ... . I

RED Slana C'''"' 0<' ""I "po,uaN, 4 . DEPARTING T H E LOC K YEllOW Ap llfoar h l('tr lo' under iull COn trol 1I00n cornO\PI·on ("li lt". 1,1( ~ Idlu'IQ nr " " PlY'I)O .... , IP/iU'nl' GREEN FnlPr lo( I( iln('l w'lI}1l lh('QilI(' ... ~.(' I I , lI v n('l'" "\001);)1 ,.- Uhf'o''''','b" I ~ IhPIOr ~ 0PP'ill;W- lh"I ",<.. c:. "I,., I"'!flp;lfl I"f'I", ~ 1~!!Y~ NO LIGHT I nr-I< no' II I l J~C aODr o a c h w tl l be c llhe . o n e S" u lf 10 1)1 0 1 Ih(' s'g nal 11UfIl U1 rl ..!!it~ Q1Jld(l willi ilod SI1;.ln(l1 lOr IOC ;" ."hh s,g na l by Ihc lOC k op!'la l ~_l "" ;:h f' 1111 ' IIlI ~ ,) 1;:'1 <;.Iow <;' ~' >( I ac:.O;UfI"u Ih ;'J I Y(II, :U (' .... r>. rio.... ' ,'l l h . ·IOr ~ "!'\I( 11 " (>/)"'1111' Ql..",nQ <;'1"'1(>"' t1 In,.. ;WI )fn-:'l'to{'l<' '1) ,/" rl)<'1<;'

BARG E TRAfFIC SAFETY TIPS

1 S!

/ S lay l'lEta' 01 the stern 01 the l OW boats T h9y rmy suddonly turn on a b ,'..,1 01 r:J .... e .l nt1 OYerturnacano&. l 'J Turn your bow ,1"1 10 rhe wal(e of barges and C):):tl<: 01 The sides of the navigation channel are mark.ed wllh rea and green buoys W "' ~ ' (I ~~ ... lityourSiOOlhechannel REOONqlGHTRFTURNING UPS TnrMA

MISSISSIPPI RIVER 'l When ~ng aoorgeala bend If'I tMnYet", rTlO""EIlO me 1t"IS(](> 01 me befld. wtlefl:l p o ss,ble H a s ti ngs to R e d Wing

LEGEND

• Campsite • Access • Rest Area Alternate Route Js Drinking Water ~ I ~ ~ g River Mile Lock & Dam A Private Campsite J X No-Facilities Campsite- y Outfitter

• 1 hC Corp!'> 01 r ngUlc"rs u ses I hc~e SIICS 10: Of p.Ogr <;pOlL n nd the U S r tS h a nd Wildlife S~ /vlCe nLJr1aqes many 01 litem 101 Wlldhle (3 16) rUlu'em a n~a c me n'plan s maY D ,orubi l (E'(r(> :J ll()n."t ' u <;p (,llh(> ~ Il es I f'" 1------'------..

SeCtI €" of Sta1ute Miles

I I., 1.r"I" .1111 T' ( , ) '"" '1 f"rI"r ll l fj"n", 1, 1 ,.~' , ~ I 111 '-., l 'r"I .. ·! '1',." \' I n( • h. I'll , ' f',vd 1<'I·lt l ••\ ' 1 ~iY.;t-,. " • ',II I "I I I". II. Io .. t h, II III t .' J 1\ 1\ ' I ,,( 1'I J ,I 1 I,,· " I'" I. ,.. " n " n rt , "'II ,\ r 1 •. f J" " I I... I I ' ~ I ', .II " ) "" " , .... , I I , I,," '"., 1', .. h,I ,, ' ~ , j, utlm,IInl ,nn ... " . h., ,. " ,ot fI { '.ocr ( .. I .. , . " , 1""",1 , 11"" "I" "· t ." , .1 ',,\ II \,11 I .. I... ,·,· !I'HI "'11 , I"" .. 1" ,It ,1'"''' ... <1''' '' '' II I""".' ,II ',,'\ P' '1"';"" """,h 'If ~~~} "" ."' " .,·', 1 "1 .. ,,, . , II"",oI.,,, .. I·.,II' .. ,,l1r"IIII"'""'I,I._',,,. ""'1."1'11",,'-,,, ' 1"'"1''' F.-,1' ·I1""i,I I..,...,.;,'( ·t ' I "~ f I, ",, I \\' tldl d .. "'-fl'·. I'" " "11'1' I It·. ,., (,I ,It,· I" I, "", V. :. ,I, H'j" • 1I" ..... In I, ".", .) ,.~ \ '''" I 'I" I , ' .. .,1 1,,1';" 1" ' 1'''1''"''' ) "".r 11,··),·,1","1 1",,1

NAIIONAL W II [) l l~E REF UGE r>FlOC EDURE FOR US I NG N!\'v'ICif\ rl ONAI l O CKS

NAT IONAL 1. I ()C K AGE SIGNAL S 3. : (jeK I NG I HHUl ; (it: ;11 ,~J.q I J/ ',I( .1 WILDLIFE REF UGE 11(;.1 I II 'I ,1 0'1,1"111 ""ill,", \0('), . ii- --.!f--:-J !tl · ~I:;~~' il., lX ~ _., __ ~/)I 10 ~ ,to\., .--. --~ l , VNA U llluWll l:.U ~NlRY I" k U HIBI1!O liB~. -~~.. __ 1 "~" >,\ __ -7 ----/ L~ ~ 11--- .~ J.I . I ~\ \~,J \ .

"", ,I, <"11'1 l'h1' 'j 1.\'",, ;1 •., 2. I Hf\ f FIC ::>i t'lNAL:::' ~} ... "'1·1 \"""J,.,I,I'ljd'l AREA "'1 1· ... "1 ,.l.... 1 R ED '.I. !!ll! (I, ,II I !" ·,,1 ,!lI/II", j ,J 8frOND THIS SIGN :"/ , Ih,j ,,11""\\:11" l-e 4 . DEP i,RT I ~Jl; ~ Hf I (lc :". ,I, t ,1\." ", 'It.. I YE:L LO W ;'I,pI,',L r ,I(" lUI,), r CLOSED • ",I""j .).I!!I'I ,\, 111.: 1 I',II"J I1~8 G R EE N 1'.11;1 (II- to ,.,.".),,1 .• ,[,,1.,11" ''''.,.,1 ''1 N O LI G HT ·r ,II U:,I' .q!~lfl' d ' I' ,I 'I" l' . ,~ " .I l' "I \ .. I· J (j' I"~ l ,' ,\ "1 II "I.,! '." JI I, ,I II II I, ,I ~ It Jt !I ,, 'I"'''I I· ,I ,1I " :,1",,! l.f,I.,I,I,'''''] , . ~" •••. ,j, Ill) I ,I'.,dl, ,:,I.,IIl1dl"," "' ''It: \ 11,1111,oJ (N\ _ ,1101' 1 ~~I ~~ 10 /i ~ l,ugl: 1~~Jr:,ilhgS~' , "llIil.:/ (,.,1" WUlOlla. MN 559ti7. 1507)4524202

\ BARGE TRO\FFI C S A FET Y TIPS 1 Sta)" Cledf 01 ;T1(mrg tJ']ll;e~ Tt'o; have a O/u)(j area Olleen.,. In Iron! 01 lIle ooJlge

~ Stay CIod3f 01 the stern 01 tn e row ::-::;.1 (5 They may SvdOellty rurn on d DuI~l oJ ! J,)0 " cl andove1lJ,n ac.anoe

) f urn your bow InlO Ihe wake 01 oarges ano bOutS

.. T h~ SlOeS 01 the nav.gahon channel dll,.! nlClf lo.t:d w.ttl It.-d ,)1.0 g l i:::'=! 11 t juO'y~ W I-vle POSSible. stay OulSIOe {he channel RED ON RIGHI li t: rUnNING UPSfHI:A/1,\ ~u(-·---~>\) ~, 5 When rneetJllg a M rge al a oon(] .n ttl€! n'o'&( nlO Il€! 10 ttl(! InstCie o l !.he !kflO wnt::l e . . ) possible

'rIRANl:- J

MISSISSIPPI RIVER VVabas h a tc VVIC una / ",,,,,,/ LEGEND j • Campsite • Access ) • Rest Area .1'1 11.... ) .... 1<0 \1 w Drinking Wa ter River Mile Lock & Dam A Private Campsite X No-Facilities ® Campsite* y Outfitter

* 11,,' t.\.,~ •• ,,1 I r'~l"'t __ '.:'" :':01." l!l~",c ~.,IL'~, I." :1. I'll: _1",,1 .1 "J lI'l' IJ ':J I ,f' .1: • ..1 V.,tO'II" ~)I.'I. SAMPLING PERIOD: 1980 - 1994 , t.: rl"U ,1 '1''', 111.111, 1,,1 IIh, I, 1.,1 Wlhil,t. · ~"I"r\: 1',I'i'.'I'_"III,j,I.,-,trld{III"/, UI[r.; tl', .·11 -~-----"\

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Sampling Gear Review: Gear types were not reported for all occurrences, but the crystal darter has been sampled with seines, stream shockers (wading sites), boom shockers (boat sites), deepwater trawls, and in one collection, impingement screens which cover cooling water intake pipes for a power generating

plant. Depths, when provided, ranged from approximately three to

30 feet.

Seines have been used longer than any other gear, compiled

the most records, and also sampled the greatest number of speci­

mens for a single collection (13 at RM 754.3 and 11 at RM 733.8).

Gear specifications and techniques are similar to those described

in the Methods and Materials section. However, MDNR Fisheries

crews used a boat in one collection to deploy the seine in deep

water, and Eddy and Underhill (1973) reported the dislodging of

woody debris in swift currents would flush specimens into a

seine held directly downstream.

The primary disadvantage of this gear occurs at depths

greater than the seine. The floats excessive buoyancy lift the

lead line off the bottom and the seine passes over darters and

other benthic fishes. The crystal darter's reported burrowing

behavior (Robison and Buchanan 1988) also injects an unknown

variable which suggests all seining efforts to date may have

actually undersampled the species. To be effective, especially

in large rivers, seines should have a depth of at least 10 feet,

and a sufficiently weighted lead line which must (1) always

remain in contact with the river bed over its entire length, and

(2) also provide some agitation to dislodge crystal darters

buried in the substrates.

16 Generally, darters are poor candidates for electroshocking

surveys especially in deep or turbid water because they posses either a rudimentary swim bladder or lack one entirely which

eliminates buoyancy. The electrical field often stuns darters on

the bottom without exhibiting galvanotaxis (forced swimming with

direction) toward the anode electrode and waiting dip netter.

Stream shockers are used in shallower water and usually more

effective than boom shockers (at least in clear streams) because

immobilized darters can be recovered off the bottom. However,

collections of this gear type have been made only in the Zumbro

River.

Boom shockers can cover several miles of stream in a single

day, and permit sampling in swift currents over wing and closing

dams and extensive gravel-sand raceways which are too large or

deep to wade with a stream shocker. However, this gear is rarely

effective on darters over a depth of about three feet and less

under turbid conditions. Despite these limitations, boom shock­

ers rank second to the seine in compiling the overall number of

crystal darter records.

Deepwater trawl surveys have produced only two crystal

darter collections in upper Pools 5 and 8 at depths of about 30

feet which is likely not the maximum depth this species inhabits.

However, these habitats are not routinely sampled and additional

surveys need to be conducted before this gear can be adequately

evaluated.

17 Conclusions and Recommendations The crystal darter does not warrant Threatened status in

Minnesota for the following reasons. (1) Unless federally list- ed, peripheral species such as the crystal darter should never qualify for status higher than Special Concern. (2) All but two of the occurrences are relatively recent (1978 - 1994), and most of these are the results of surveys conducted since 1991. (3)

Many occurrences are comprised of multiple records which encom- pass varying sample periods (i.e., weeks, months, years, and decades) and verifies the same results can be reproduced on a fairly consistent basis. (4) The current distribution is much wider than what was known in 1983 when the species was first reviewed and appropriately designated Special Concern. (5) The crystal darter has exhibited the ability to successfully adapt and utilize habitats associated with wing dams which are exten- sive and abundant throughout most of species reported range in

Mississippi River Pools 4 - 9.

Future efforts to document the crystal darter in Minnesota and identify threats to habitats should include the following:

(1) Surveys should be conducted where the species has not been reported in the Mississippi River drainage below St. Anthony

Falls. This includes lower reaches of the Minnesota, Cannon,

Whitewater, and Root Rivers, and Mississippi River Pools 1 - 3,

7, and 9. (2) When the species is sampled in a new locality, at least one voucher specimen should be deposited in the fish col- lection at the James Ford Bell Museum of Natural History in St.

Paul. (3) Seines used in the Mississippi River must be deep enough and sufficiently weighted to effectively sample depths

18 from a minimum of six to at least nine feet. In the 1994 study, this requirement was never met and the seine was either too shallow (Table 1) or too deep where the lead line was only par- tially or sporadically in contact with the bottom. (4) A boom shocking survey should be conducted down the last 10 to 20 miles of the Zumbro River and selectively target only preferred habi­ tats (i.e., gravel-sand raceways and embedded woody debris). If these efforts produce favorable results, expand surveys to in- clude other large Mississippi River tributaries. (4) Deepwater trawl surveys should be attempted in scour holes below lock and dams, wing and closing dams, and tributary mouths. (5) Kuehne and Barbour (1983) reported the crystal darter may be more vul­ nerable to nocturnal sampling which should be incorporated in all survey gear regimes. (5) Surveys should be done during low flows from about late June to mid September. Crystal darters have been collected as late as November, but this 1994 study observed a dramatic decline of all species and total catch in late September when fishes are apparently moving into deeper water. (6) Abun- dance data is lacking on the species and follow up SCUBA surveys at sites where the crystal darter has been recently sampled may provide this information, and also, reveal the actual effective­ ness of the qear type used. However, Dr. Jay Hatch (pers.comm.) from the University of Minnesota experienced almost zero visibil­ ity during a 1994 summer dive due to turbidity. Additional dives should be attempted during extended droughts and winter months when optimum water clarity conditions exist. (7) Robison and

Buchanan (1988) reported that crystal darter habitats are ex­ tremely vulnerable to channelization, dredging, and impoundments.

19 The Mississippi River is managed for commercial navigation which

includes the practice of dredging a minimum channel depth and dumping dredge spoil on river banks and islands. This would appear to be the greatest threat facing the crystal darter in

Minnesota. However, one lower Pool 4 collection was made in 1994

at an island (RM 756.4) which is a designated and active dredge

spoil disposal site. The unconsolidated material gradually

eroding back into the river may be providing a source of suitable

substrates which favor the crystal darter's burrowing behavior.

The potential impacts (negative and positive) of this practice

should be fully assessed through long term studies conducted at

this site and others designated for dredge spoil dumping. Varia-

bles to be monitored should include the presenCe and abundance of

fishes both tolerant and sensitive to siltation and turbidity,

water depth, current velocity and direction, substrate composi-

tion and embeddedness, and sediment deposition on wing dams.

Acknowledgements I would like to thank Scott Yess (U.S. Fish and Wildlife

Service - Onalaska, WI), Andy Bartels (Wisconsin DNR Onalaska,

WI), Mark Stopryo (Minnesota DNR - Lake City), and Dr. Jay Hatch

(University of Minnesota) for their assistance in conducting the

1994 surveys. Dr. James Underhill for cataloging specimens in

the Bell Museum fish collection. And the Minnesota Nongame

Wildlife Program for partially funding this study.

20 Literature Cited Becker, G.C. 1983. Fishes of Wisconsin. University of Wisconsin Press, Madison. 1053 pp.

Eddy, S., and J.C. Underhill. 1973. Northern Fishes. University of Minnesota Press, Minneapolis. 414 pp.

Fago, D. 1986. Distribution and Relative Abundance of Fishes in Wisconsin. VII. St. Croix River Basin. Technical Bulletin No. 159. Wisconsin Dept. of Natural Resources, Madison. 112 pp.

Kuehne, R.A., and R.W. Barbour. 1983. The American Darters. University of Kentucky Press. 177 pp.

Lee, S.L, C.R. Gilbert, C.H. Hocutt, R.E. Jenkins, D.E. McAllister, and J.R. Stauffer, Jr. 1980. Atlas of North American Freshwater Fishes. North Carolina State Museum of Natural History. 867 pp.

Robison, H.W., and T.M. Buchanan. 1988. Fishes of Arkansas. University of Arkansas Press. 536 pp.

Schmidt, K.P. 1995 (in preparation). Endangered, Threatened, and Special Status Fishes of North America. Fourth Ed. American Currents. North American Native Fishes Association. Philadelphia.

21

IJ.l ..~

-...J W .W \,0 age No. 04/22/95 CRYSTAL DARTER (CRYSTALLAR A ASPRELLA) WISCONSIN BOUNDARY AND ALL MINNESOTA RECORDS FEDERAL-STATE AGENCY, UNIVERSITY, AND PUBLIC UTILITY UPPER MIDWEST FISH DATABASE OVERVIEW SUMMARY COMPILED BY KONRAD SCHMIDT (612) 776-3468 1663 IOWA AVENUE EAST SAINT PAUL, MINNESOTA 55106 ======

*** OVERALL SUMMARY *** Last Data Entry Date: 04/17/95

Database Records: 30

No Date Data Records: o

Pre-1945 Records: 1

1946-1969 Records: 3

1970-Present Records: 26

No Catch Data Records: 1

1-5 Catch Records: 25

6-10 Catch Records: 2

)10 Catch Records: 2

Total Catch: 75

Average Catch: 3

Maximum Catch: 13

Ie Stations: 24

Replicate Samples: 6

First Ie Date: 19450802

Last Sample Date: 19941014

Sampling 28

Drainage Basins (12): 2

or Watersheds (82): 5

Di unct Basin Records: o e No. 04/22/95 CRYSTAL DARTER (CRYSTALLARIA ASPRELLA) WISCONSIN BOUNDARV AND ALL MINNESOTA RECORDS FEDERAL-STATE AGENCY, UNIVERSITY. AND PUBLIC UTILITY UPPER MIDWEST FISH DATABASE OVERVIEW SUMMARY COMPILED BY KONRAD SCHMIDT (612) 776-3468 1663 IOWA AVENUE EAST SAINT PAUL, MINNESOTA 55106 ======*** MINNESOTA SUMMARY *** Database Records: 17

Total Catch: 41

Average Catch: 2

Maximum Catch: 11

Ie Stations: 13

Replicate les: 4

First Ie Date: 19610816

Last Ie Date: 19941014

ling 16

Counties (87): 3

*** WISCONSIN SUMMARY *** Database Records: 13

Total Catch: 34

Average Catch: 3

Maximum Catch: 13

Ie Stations: 11 licate les:

First Sample Date: 19450802

Last Ie Date: 19940929

ling 13

Counties (72): 4 age 04/22/':(5 CRVSTf~L. DARTER (CRYSTr~LU¥nA ASH~ELU~) WISCONSIN BOUNDARY AND All MINNESOTA RECORDS FEDERi-iL-STATE AGENCY. UN FIERS I TY ~ ?~ND PUBL elL I TY UPPER MIDWEST FISH DATABASE OVERVIEW SUMMARY COMPILED BY KONRAD SCHMIDT (612) 776-3468 1663 IOWA AVENUE EAST SAINl" PAUL, MINNESOTA 55106 ======MN - WI BORDER POOLED DATA SUMMARY (BURNETT - VERNON COUNTIES, WI) St. Croix Records: 2

St. Croix Catch: 2

Average Catch: 1.

Mississippi Records:

Mississippi Catch: 54

f.\verage Catch: 3

*** IOWA SUMMARY *** Database Records: 0

Total Catch: 0

Catch: 0

1"113. X imum Catch: 0

Sample Stations: 0

Replicate Samples: 0

First Ie Date: 0

Last Sample Date: 0

1 ng 0

Counties (9(";1): 0 e No. 4 04 22 95 CRYSTAL DARTER (CRYSTALLARIA ASPRELLA) WISCONSIN BOUNDARY AND ALL MINNESOTA RECORDS FEDERAL-STATE AGENCY, UNIVERSITY AND PUBLIC UTILITY UPPER MIDWEST FISH DATABASE BASIN DISTRIBUTION SUMMARY COMPILED BY KONRAD SCHMIDT (612) 776-3468 1663 IOWA AVENUE EAST SAINT PAUL. MINNESOTA 55106

======;======Total Database Sample Replicate or Catch Catch Records Stations les Watersheds

Mississippi Headwaters Basin (15 or Watersheds) o o o 0 o o

r Mississippi Black-Root Basin (6 or Watersheds) 73 3 28 22 6 26 4

per Mississippi uoketa-Plum Basin (3 or Watersheds) o 0 o 0 o 0 o

Upper Mississippi Iowa-Skunk i nicon Basin (4 or Watersheds) o o o o 0 o o

innesota Basin (12 or Watersheds) o 0 o 0 o o o

Saint Croix Basin (4 or Watersheds) ~ L 1 2 2 o 2 1

Des Moines Basin (3 or Watersheds) 0 0 o 0 o o o

Missouri-Big Sioux Basin (3 or Watersheds 000 o o o o

Missouri-Little Sioux Basin (1 or Watershed) o 0 o o o o o

Lake Superior Basin (5 or Watersheds) o o o 0 o o o

Red River of the North Basin (17 or Watersheds) 0 0 0 0 0 o o

Rainy Basin (9 or Watersheds) 0 0 0 0 0 o o ------Overall 12 Basins/82 or Watersheds) 75 3 30 24 6 28 5 Page No. 1 04/22/95 UPPER MIDWEST FISH DATABASE RECORDS COMPILED FROM FEDERAL-STATE AGENCY, PUBLIC UTIILITY, AND UNIVERSITY LAKE AND STREAM SURVEYS KONRAD SCHMIDT, 1663 IOWA AVE. E., ST. PAUL, MN 55106

LOCATION/TWP-RGE-SEC:RIVER MILE COUNTY-STATE CATCH DATE SOURCE

** PERCIDAE - PERCHES * CRYSTAL DARTER (AMMOCRYPTA ASPRELLA) St.Croix R/33-19-27:46.3 Polk-WI 1 19781016 WDNR-Fago St.Croix R/31-19-29:31.9 St. Croix-WI 1 19820826 WDNR-Fago Mississippi R/113-15-11:794.4 Goodhue-MN 1 19910903 MDNR-LTRM Mississippi R/II1-10-34:758.7 Wabasha-MN 1 19940714 MDNR-Fish Mississippi R/I11-10-34:758.7 Wabasha-MN 1 19941013 Schmidt Mississippi R/22-13-20:758.0 Buffalo-WI 1 19940929 MDNR-LTRM Mississippi R/22-13-21:756.4 Buffalo-WI 2 19940812 MDNR-LTRM Mississippi R/22-13-34:754.3 Buffalo-WI 7 19940817 Hatch Mississippi R/22-13-34:754.3 Buffalo-WI 13 19940824 Hatch Mississippi R/22-13-35:753.9 Buffalo-WI 1 19930729 MDNR-LTRM Mississippi R/108-08-23:734.8 Winona-MN 1 19820600 EA Inc. Mississippi R/I08-08-25:733.8 Winona-MN 2 19821110 EA Inc. Mississippi R/108-08-25:733.9 Winona-MN 1 19941014 Schmidt Mississippi R/108-08-25:wdam 2-4 Winona-MN 11 19800000 Army COE Mississippi R/18-10-08:723 Buffalo-WI 1 19450802 Greenbank Mississippi R/18-10-08:723 Buffalo-WI 2 19940804 Mundahl Mississippi R/21-13-13:1706.9S Buffalo-WI 3 19800925 Dairyland Mississippi R/21-13-14:1706.0+ Buffalo-WI 1 19800000 WDNR-Fago Mississippi R/21-13-23:750.0 Buffalo-WI 1 19820721 Simon Mississippi R/18-09-27:1670.1+ Trempealeau-WI o 19490000 WDNR-Fago Zumbro R/109-12-18:34.0 Wabasha-MN 1 19840820 MDNR-Fish Zumbro R/109-12-18:34.0 Wabasha-MN 3 19850918 MDNR-Fish Zumbro R/I09-12-18:34.0 Wabasha-MN 3 19931019 MDNR-Fish Zumbro R/109-14-15 Wabasha-MN 2 19850520 MDNR-Fish Zumbro R/l10-10-17 Wabasha-MN 1 19610816 Bell Zumbro R/110-10-22 Wabasha-MN 6 19610816 Bell Zumbro R/l10-11-31:Theilman Wabasha-MN 3 19850000 Gates Mississippi R/105-04-33:702.3 Winona-MN 1 19920817 WDNR-LTRM Mississippi R/I05-04-33:702.3 Winona-MN 1 19921015 WDNR-LTRM Mississippi R/I05-04-34:701.2 Winona-MN 2 19930908 WDNR-LTRM * Subsubtotal * 75 ** Subtotal ** 75 *** Total *** 75