Movement of Marked Fish

TABLE 16. DATA ON MOVEMENT OF MARKED FISH AT THE UPPER NEOSHO

STATION, SEPTEMBER, 1959.

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| Number | Number | Number | Number

SPECIES | marked | recaptured | moved | moved

| | | upstream | downstream

------------------------+--------+------------+----------+--------------

Golden Redhorse | 24 | 16 | 0 | 2

Sucker-mouthed Minnow | 68 | 27 | 7 | 0

Red-finned Shiner | 74 | 0 | 0 | 0

Red Shiner | 1326 | 152 | 48 | 25

Blunt-nosed Minnow | 136 | 32 | 1 | 10

Fat-headed Minnow | 151 | 40 | 0 | 0

Stoneroller | 177 | 90 | 1 | 0

Black Bullhead | 25 | 6 | 2 | 0

Channel Catfish (j)[L] | 294 | 36 | 4 | 7

Channel Catfish (yy)[M] | 145 | 34 | 2 | 0

Stonecat | 33 | 6 | 0 | 0

Green Sunfish | 124 | 68 | 1 | 0

Long-eared Sunfish | 33 | 21 | 0 | 0

Slender-headed Darter | 70 | 1 | 0 | 0

Orange-throated Darter | 13 | 0 | 0 | 0

------------------------+--------+------------+----------+------------

[L] (j) denotes juveniles only.

[M] (yy) denotes young-of-year only.

Some measure was gained of the amount of movement exhibited by several

species of fish. Results are biased in favor of a conclusion that a

species is sedentary because a large percentage of the recaptures were

made in collections taken in the same immediate area three hours after

release of marked fish, the total area checked was not large (one mile),

and collecting was limited to an eleven-day period. Nevertheless, some

species were shown to be definitely mobile and others exhibited

pronounced sedentary tendencies. The results of experiments on movement

are presented in Table 16. Marked fish (dyed and fin-clipped) were taken

as long as seven days after being marked. Only those species in which

more than ten individuals were marked are included.

Blunt-nosed minnow, red shiner, and channel catfish (yearlings and

older) are more mobile than other species.

The mobility of channel catfish has been discussed by Muncy (1958) and

Funk (1957). My records show that of 36 marked channel catfish that were

recaptured, 11 were taken in areas other than the one into which they

had been returned. A pronounced mobile tendency on the part of the red

shiner and blunt-nosed minnow is shown by the fact that of 152 marked

red shiners recaptured, 73 had moved from the area of release; and of 32

marked blunt-nosed minnows recaptured, 11 had moved from the area of

release. The fact that the habitat occupied by these species is not

precise (ranging from swift riffles to quiet pools) supports a

conclusion that the species are mobile.

The fat-headed minnow, stoneroller, channel catfish (young-of-the-year),

green sunfish and long-eared sunfish form a sedentary element of the

population. With the exception of the fat-headed minnow, the sedentary

group also maintained relatively stable numbers in Areas 1, 3 and 6

throughout the study (Table 14). It is interesting to note that, in

contrast to the mobile group, the species forming the sedentary group

have rather well-defined habitat preferences.

A third group of species, represented by the red-finned shiner,

stonecat, slender-headed darter and orange-throated darter, was

characterized by having a low rate of recapture. I suspect that

mortality is a factor contributing to the failure to recapture

red-finned shiners, because in one collection only four of 31 red-finned

shiners captured were successfully marked and released, in another case

70 of 818. The red-finned shiner occurs most often in pools but is also

taken in other areas, is pelagic, and probably is a mobile species.

The stonecat, slender-headed darter and orange-throated darter are

generally restricted to riffle-habitats, and are probably sedentary. The

low number of recaptures for these three species probably is due either

to a slow rate of dispersal from the point of release or to latent

mortality resulting from shock. Table 14 shows that these three species

maintain comparatively stable populations, but there seems to be a

tendency for a reduction in numbers with continued collecting, even

though all fish captured were returned to the stream.

Golden redhorse showed a high rate of recapture. All individuals marked

were recaptured three hours after release in Areas 1 (two fish) and 3

(five fish). Nine individuals were taken from Area 4 on 11 September;

seven of these were marked and released in the next pool downstream

(Area 3). On 15 September, two fish were retaken in Area 3 and two were

retaken in Area 2, the next pool downstream. The species was common in

Area 5 also where five of eight marked individuals were recaptured two

days after release. It seems that the golden redhorse is somewhat

restricted in movement, at least for short periods.

The sucker-mouthed minnow and black bullhead showed some movement--less

than such mobile species as red shiners and channel catfish, but more

than the sedentary group. Seven of 27 marked sucker-mouthed minnows were

taken in areas adjacent to the one to which they had been returned. Two

of six black bullheads that were recaptured had moved. The black

bullhead moved the greater distance. The extent of short-term movement

by several of the species in the Upper Neosho correlates well with

redistribution subsequent to drought in the Wakarusa River, discussed by

Deacon and Metcalf (1961).

Similarity of the Fauna at the Upper Neosho Station to the Faunas of

Nearby Streams

The fauna that I found to be characteristic at the upper Neosho station

has affinity with the upland tributary-fauna described by Metcalf (1959)

for Chautauqua, Cowley and Elk Counties, Kansas. The primary difference

is a nearly complete absence at my station of the Ozarkian element of

the population. Some species (red-finned shiner, long-eared sunfish, and

spotted bass) listed by Metcalf as characteristic of the mainstream of

smaller rivers occur at the upper Neosho station in greater abundance

then elsewhere in the Neosho. This difference is probably due to the

fact that the upper Neosho station is somewhat larger and slightly more

turbid than Metcalf's "upland tributaries."

Hall (1952) reported on the distribution of fishes in the vicinity of

Fort Gibson Reservoir, an impoundment on the Grand (Neosho) River in

Oklahoma. He separated the fishes into three groups according to

habitat-preference: species restricted to upland tributaries on the east

side of Grand (Neosho) River, species restricted to lowland tributaries

on the west side of Grand (Neosho) River, and species occurring in the

Grand River proper and/or tributaries on one or both sides.

Several species found in the upper Neosho River also occur in the area

studied by Hall. Of these, only the creek chub was restricted to upland

tributaries on the east side of Grand (Neosho) River. The sucker-mouthed

minnow and red-finned shiner were restricted to the lowland tributaries

on the west side of Grand (Neosho) River in the Fort Gibson Reservoir

Area. Golden redhorse, stoneroller, yellow bullhead, spotted bass, green

sunfish, long-eared sunfish, and orange-throated darter were present in

collections from the Grand River proper and/or tributaries on both sides

of the river, most commonly in tributaries.

Hall's data show that black bullhead, large-mouthed bass, white crappie,

and logperch occurred most frequently in or near the quiet water of the

reservoir. In my study these fish were most common in the larger, quiet

pools at the upper Neosho station.

Fish Populations, Following a Drought, in the Neosho and Marais des Cygnes Rivers of Kansas · 第 90 / 119 题