TPWD 1955 F-6-R-2 #169: Inventory of the Fish Species Present in Falcon Reservoir: Segment Completion Report

TITLE OBJECTIVES PROCEDURE STATE Texas PROJECT NO. F~6~Rm2 Job Ema PERIOD July 1 195A to June 30. Segment Completion Report by Alvin Flory and Luciano Guerra Inventory of the fish species present in Falcon Reservoir. To determine the species present and their relative numbers in Falcon Reservoir. Netting Collections 1. Ten stations were selected on Falcon Reservoir to represent different locations and ecological conditions. A total of 112 experimental nets were set during the period. As far as pos~ sible nets were set at each station at monthly intervals but because of low water equipment breakdown some were not sampled. 2. All fish taken in nets were weighed and measured, sexed and parasites noted. Scales failed to yield any signs by which age could be determined. Twentyufour stomachs were examined in the field and contents noted. Twelve stomachs of small fish were preserved for further laboratory study. Seining Collections 1. Twelve seining collections were made at the three available beaches with a 30 X 6 foot bag seine. Four rotenone collec~ tions were made, chiefly in an effort to recover bass fry. Data collected on netting and seining collections was recorded on fish cards and collections sheets. These were filed for further study, tabulation and analysis. Netting Collections 1. A total of 3868 specimens of 21 species was taken in the ll2 experimental gill net sets. 955 2. The data collected was filed and the ”K" factors and stomach analysis will be presented in the jOb completion report. b. Seining Collections 1. A total of lh9l fish of 15 species was taken in twelve seining collections and 6765 fish of 20 species were taken in the four rotenone collections. c. All data observed and recorded in making the netting and seining collections was filed and will be used later in making detailed charts and tables for the job completion report. A total of 28 species of fish have been recorded during this segment from Falcon Reservoir. Their frequency of occurrence for this segment is shown on the species list. SUMMARY One hundred and twelve experimental gill net sets, twelve seining collections and four rotenone collections were made in Falcon Reservoir during this segment. Fish collected were tabulated, weighed, measured, sexed and parse sites noted. Stomach contents were preserved from some fish. Twentyneight fish species have been recorded from Falcon Reservoir. Table 1 Results of Experimental Netting in Falcon Reservoir Species chisostens spatula Lepisosteus productus Lepisosteus ossens Dorosoma cepedianum Astyanax fasciatus Ictiobns bubalus Carpiodes carpio Totalurns punctatus ictainrus furcatns Ameinrns melas Pilodictus olivaris Mngil oephalus Choenobryttns coronarins Morons chrysops Micropterns salmoides Lepomis cyanellus Lepomis macrochirus Lepomis auritus Pomonis annularis Aplodionotns grunniens Cichiasoma cyanoguttata Number collected Total 479 6 33 245 1 1313 66 h A an LA.) 1 1 2 2 3 2 5 1 60 Percent of Total 12.383 .155 .853 6.334 .025 33.945 1.706 .103 11.659 .025 .827 .051 .077 .051 .129 .025 1.551 .051 .025 29.550 .t65 Table 2 Results of Seining and Rotenone Collections in Falcon Reservoir Species Seining Lepisosteus spatula O Lepisosteus osseus l Dorosoma cepedianum 691 Astyanax fascietus 101 Ictiobus bubalus 5 Carpiodes carpio O Hybopsis aestivalis 8 Notropis braytoni 71 Notropis lutrensis 69 Notropis proserpinus MO ictalnrus pnnctatus O Totalnrus furcatus O Ameiurus melas O Cyprinodon variegatus 5 Gambusia affinis 5 Menidia beryllina #20 Lepomis cyanellus l Lepomis macrochirus lO Lepomis auritus O Aplodionotus grunniens 6O Cichlasoma cyanoguttata k Total 1h91 Rotenone Total n 1 3993 216 1L9 2 2t 11 1A9 57 1 11 2 l9 l3l9 2089 12 52 1 111 31 8256 Percent .048 .012 t8.365 2.616 .593 .02h .290 1.369 1.805 .690 .02u .133 .02A .230 15.976 25.303 .1t5- .630 .012 1.3tt .375