TPWD 1955 F-6-R-2 #169: Inventory of the fish species present in Falcon Reservoir

--- Page 1 --- STATE Texas PROJECT NO, F-6-R-2, Job Bul PERIOD July 1, 1954 to June 30, 1955 Segment Completion Report Ly by NE Alvin Flury and Luciano Guerra TITLE Inventory of the fish species present in Falcon Reservoir. OBJECTIVES To determine the species present and their relative numbers in Falcon Reservoir. PROCEDURE a. 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 statior 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. Twenty-four stomachs were examined in the field and contents noted. Twelve stomachs of small fish were preserved for further laboratory study. b. 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. ec. Data collected on netting and seining collections was recorded on fish cards and collections sheets. These were filed for further study, tabulation and analysis. a, Netting Collections 1. A total of 3868 specimens of 21 species was taken in the 112 experimental gill net sets. --- Page 2 --- 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 1491 fish of 15 species was taken in twelve seining collections and 6765 fish of 20 species were taken in the four rotenone collections. ¢. 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 para-= sites noted. Stomach contents were preserved from some fish. Twenty-eight fish Species have been recorded from Falcon Reservoir. --- Page 3 --- Results of E Species Lepisosteus spatula Lepisosteus productus Lepisosteus osseus Dorosoma cepedianum Astyanax fasciatus Tetiobus bubalus Carpiodes carpio ietalurus punctatus setalurus furcatus Ameiurus melas Pilodictus olivaris Mugil cephalus Chaenobryttus coronarius Morone chrysops Micropterus salmoides Lepomis cyanellus Lepomis macrochirus Lepomis auritus Pomoxis annularis Aplodionotus grunniens Cichlasoma cyanoguttata Table 1 xperimental Netting in Falcon Reservoir Number collected 479 6 33 2hs5 L 1313 ON ON = ‘ Loe) WwW MMORFPWUINWNNYHH £ ON fb ke = Lee) 18 Total 3868 Percent of Total 12. 383 155 O85 6.334 2025 33.945 1.706 103 11.659 .025 827 2051 -O77 .O51 2129 .025 1.551 .O51 .025 29.550 465 --- Page 4 --- Table 2 Results of Seining and Rotenone Collections in Falcon Reservoir Species Seining Lepisosteus spatula 6) Lepisosteus osseus 1 Dorosoma cepedianum 691 Astyanax fasciatus LOL Ictiobus bubalus 5 Carpiodes carpio O Hybopsis aestivalis 8 Notropis braytoni TL Notropis lutrensis 69 Notropis proserpinus Xe) Ictalurus punctatus 6) ictalurus furcatus @) Ameiurus melas O Cyprinodon variegatus 5 Gambusia affinis 5 Menidia beryllina 420 Lepomis cyanellus ne Lepomis macrochirus 10 Lepomis auritus 6) Aplodionotus grunniens 60 Cichlasoma cyanoguttata } Total 1491 Rotenone he 0 3302 115 hh 2 16 he 80 17 1 11 2 14 1314 1669 11 ho 51 eal 6765 Total 4 1 3993 216 49 2 au 113 149 57 1 11 2 19 1319 2089 12 52 1 111 31 8256 Percent O48 .012 48.365 2.616 2593 024 . 290 1.369 1.805 .690 02k »i33 024 230 15.976 25.303 145 2630 .012 1.344 a 373