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be-extinct Cyprinodon bovinus (Leon Springs pupfish). The preserve <br />will also provide protection for Gambusia nobilis (Pecos gambusia). <br />Both of these species are federally endangered. Additionally, the <br />preserve will protect three rare snail species and the puzzle <br />sunflower (Helianthus paradoxus). <br />A recent TPWD status review of Dionda diaboli suggests that <br />their numbers have declined throughout what remains of their range. <br />Reduction in water flow from human use and drought was probably a <br />major contributing factor. The historically restricted range of <br />this species has been reduced by inundation of the lower Devils <br />River by Amistad Reservoir (1969), dewatering of the upper Devils <br />River (the headwaters have moved about 20 km downstream) and <br />extirpation of the Las Moras Creek population (late 70s). <br />Texas now lists Oncorhynchus clarki virginalis (Rio Grande <br />cutthroat trout) as an extirpated native species. This decision <br />was based on various historic accounts and descriptions of trout <br />in West Texas. Although no specimens exist, for several reasons <br />we feel O. c. v_irginalis was the species referenced. Texas is now <br />exploring the possibility of reestablishing O. c. virginalis in a <br />few appropriate sites. <br />The TPWD has begun a process of developing management plans <br />for fishes of special concern. To date, management plans for two <br />species, Polyodon spathula (paddlefish) and Micropterus treculi <br />(Guadalupe bass), have been completed. Each plan has the following <br />components: 1) objective of management plan (= preserve, conserve <br />and protect natural resources); 2) historic perspective; 3) <br />biological summary; 4) current problems; 5) proposed remedies. The <br />TPWD intends to implement these plans and, in essence, they could <br />serve as state-level recovery plans. <br />Finally and unfortunately, a series of intensive collections <br />this past year has confirmed that Gambusia georgei (San Marcos <br />gambusia) is now extinct. <br />5