TPWD 1956 F-4-R-3 #218: Check on Commercial Catch of Rough Fish from Lake Whitney: Segment Completion Report

SEGMENT COMPLETION REPORT STATE OF TEXAS Project N00 FMR3 Name Fisheries Investigations and Surveys of the waters of Region h-B. JOb Not ~B—l2 Title Check on Commercial Catch of Rough Fish from Lake Whitneyo Period Covered November 12 1255 to October 312 1956 OBJECTIVES To determine the effectiveness of commercial fishing on the control of rough fish and predatory species and the value of the local fishery as well as the relative abundance and seasonal. variation by species in the commercial catch. ABSTRACT I. A l2-month study was made of the commercial catch of rough fish from Lake Whitneyo 2a Slightly over 29,000 pounds of carp, carpsucker and buffalo were taken from.the lake by the use of hoOp netsa 3. The harvest was about two pounds of fish per surface acre which is insign- ificant for rough fish management purposeso he Carp composed 70 percent and buffalo 28 percent of the fish nettedo 5a The wholesale market value of the fish harvested was $3,91802ha 6e Recommendations were made for a program to begin.which would explore practical means of effecting a more complete rough fish harvest TECHNIQUES USED The commercial fishermen were supplied forms to be filled out on which they recorded the amount and weight of each species that was netted. The forms were collected each month by mail or by personal contact with the fisherment DISCUSSION The only type of commercial fishing allowed on Lake Whitney is by state contracta The operator is bonded and compelled to submit a monthly report of his catch, He is limited to specific devices which may be used and the contract states which species of fish that may be taken from the lake The responsibiltiy of the operation of the netters is under the jurisdiction of the local game warden There have been only two commercial fishermen on Lake Whitney during the past year. One of them has done a limited amount of fishing on the upper end of the lake and has contributed only a small part of the total catcho The other fisherman has netted primarily in the Bear Creek and Cedar Creek areasa He has fished only during the - cooler months and runs 20 to 35 nets during the period of operationa The fish are collected from the hOOpvnetS two or three times each weeka 'HOOp nets are the only type of gear allowed on the lake and carp, buffalo, carpsucker, shad, and gar are the only fish which can be taken by the commercial fishermeno Shad and gar are seldom caught in the netso Neither fisherman worked the lake for a continuous 12—month period. Tnereu fore, it would be difficult to evaluate the seasonal variation in the percentage of sec] species of fish caught. But the data obtained does indicate that a higher percentage of smallmouth buffalo was caught during the colder months. A total of 29,h9l pounds of rough fish, worth $3,918.2h on the wholesale market, was taken from Lake Whitney during the 12-month period. Carp were the most abundant fish caught, representing 70.68 percent by number and 70.99 percent by weight of the total harvest. A higher percentage of smallmouth buffalo (28 percent compared to 8 percent) were caught during the present study than were taken in last year‘s netting operation. The difference probably represents an improved technique in netting rather than a pOpulation trend. The total pounds of each Species caught with their_prevailing wholesale market value is given in Table l. The number of each species taken and the percentage of the entire catch that they represent is given in Table 2. Figure 1 shows the harvest per surface acre with the area based on the mean of 1h,285 surface acres for the 12-month period. By a brief survey of the figures presented in the current report it can be readily understood that the present rate of harvest has no substantial effect upon the control of the rough fish in Lake Whitney. The total harvest of only two pounds of fish per surface acre is negligible as compared with the amount of rough fish that the lake is producing. It is known from the creel census taken on the lake, previous to the present survey) that the game fish harvest amounted to more than 12% pounds per surface acre per month during a 27—month period. It is reasonable to believe that the rough fish production in the lake would be comparable to the game fish harvest. Therefore, it seems that a method of rough fish harvest that is at least as effective as the game fish catch is urgently needed for many of our lakes. The writer is of the opinion that even if the contract netters take was increased many times_it could still fall short of the Idesirable harvest of rough fish. It is evident that more progressive methods of control must be applied to the nonugame fish population if their management and full utilization is to ever be achieved. RECOMMENDATIONS It is recommended that a program be initiated which would explore practical means of effecting a more complete rough fish harvest. The results might be obtained by giving the contract netters technical assistance with their gear and methods or by working on research programs carried out entirely by the Inland Fisheries Division. ' Prepard by "Robert N. Hambric Approved by 2: 2m L// rvf/él Assistant Project Leader ief Aquatic Biologist ‘Date .March 20 1957 Table 1. Pounds of Harvest and Wholesale Market Value of Fish Caught by Commercial Fishermen, Lake Whitney, TEXas, Nevember 1955 through October 1956. Species .Total Pound Caught WhOlesale Price Total Value _ per_Pound Carp 20,799 0.10 $2,079.90 Smallmouth buffalo 8,237 0.22 1,812.1h Carpsucker 262 0.10 26.20 Totals 29,298 $3,918.2h 1L. Table 2. anber of each Species Caught and the Percentage of the Entire Catch that they Represent. Lake Whitney, Texas, November 1955 - October 1956. M Species Total Number Caught Percent by Number Percent by Weight WW Carp 8,272 70.68 70.99 Smallmouth buffalo 3,298 28.18 28.11 Carpsucker 133 1 .11+ 0 . 90 Totals 11, 703 100 . 00 100 . 00 M Bocmm _ ._.Im I>w<mm._. O_u NOCQI 3w... .umm mam—ubom bomm p.302. Fbxm £I_._.ZN<. ANXDm. ZO<mzmmw 500 4130—50.... 0040mm.» 5mm floczom 0." 3m... vmm mam—"Dom Down mthmm 1...; .r {VI}. .. .. .. .. - gifloé opmvmcozmm o.o_ u ‘3'. 5. u. . 2 w I .V I ... . a ... .. . .... ._ x a I . .. . . o. «T . s n . s . . u u . .- - I. .. .... . . 1....” . . .A . . . _ _ . .s I-IItIIIIIIII-l |'l' .4 i- . 1r-