Effects of diel un-ionized ammonia fluctuation on juvenile hybrid striped bass, channel catfish, and blue tilapia

Aquaculture ◽  
2001 ◽  
Vol 195 (1-2) ◽  
pp. 163-181 ◽  
Author(s):  
John A Hargreaves ◽  
Semra Kucuk
2013 ◽  
Author(s):  
Malcolm L McCallum ◽  
Gina M Worley ◽  
Barroq Safi ◽  
Kris Dickens ◽  
Jason Jones ◽  
...  

The purpose of this study was to infer the possible impact of unmonitored discard of by-catch on a recreational fishery. We recorded by-catch of fishes at a recreational fishery in Northeast Texas, statistically analyzed them, and then projected estimates of mortality if our observations represent a general pattern of behavior. Anglers discarded nine species of fishes during our study. The most frequently discarded fish were Gizzard Shad and Freshwater Drum. Four species of game fish were among the discarded species, but only Channel Catfish and Hybrid Striped Bass composed a large portion of the discarded fishes. Based on our observations, recreational fishing can produce a large amount of by-catch throughout the year and potentially pose an important unmonitored source of fish mortality.


2013 ◽  
Author(s):  
Malcolm L McCallum ◽  
Gina M Worley ◽  
Barroq Safi ◽  
Kris Dickens ◽  
Jason Jones ◽  
...  

The purpose of this study was to infer the possible impact of unmonitored discard of by-catch on a recreational fishery. We recorded by-catch of fishes at a recreational fishery in Northeast Texas, statistically analyzed them, and then projected estimates of mortality if our observations represent a general pattern of behavior. Anglers discarded nine species of fishes during our study. The most frequently discarded fish were Gizzard Shad and Freshwater Drum. Four species of game fish were among the discarded species, but only Channel Catfish and Hybrid Striped Bass composed a large portion of the discarded fishes. Based on our observations, recreational fishing can produce a large amount of by-catch throughout the year and potentially pose an important unmonitored source of fish mortality.


<em>Abstract.-</em>The Arkansas Game and Fish Commission’s Family and Community Fishing Program was developed in 2002 after a 3-year pilot study. The program’s goal is to enhance or create destinations in highly populated areas so that excellent fishing is available to all Arkansans. The program has grown from stocking catchable fishes in 10 locations in 2002 to 36 locations in 2007. In 2007, approximately 68,000 channel catfish <em>Ictalurus punctatus </em>and 65,000 rainbow trout <em>Oncorhynchus mykiss </em>were stocked in spring/summer and winter, respectively, in 22 cities. Channel catfish and rainbow trout were both stocked at approximately 200 fish per acre per month. Hybrid striped bass <em>Morone saxatilis </em>x <em>M. chrysops </em>were stocked at 50-100 fish per acre when fish became available. Trophy blue catfish <em>Ictalurus furcatus </em>from 15 to 60 lb were stocked on occasion to increase media attention and generate angler excitement at Program locations. Anglers were permitted to harvest three channel catfish, three hybrid striped bass, and five rainbow trout per day with no length restrictions. Largemouth bass <em>Micropterus salmoides </em>were catch and release only and the sunfish <em>Lepomis </em>spp. daily limit was 25. Ten fishing derbies and 14 fishing clinics were provided free to the public in 2007 to facilitate angler education and family participation. The Program has provided an opportunity for thousands of Arkansans to fish with friends and family in convenient locations.


<em>Abstract.-</em>The Arkansas Game and Fish Commission’s Family and Community Fishing Program was developed in 2002, and catchable channel catfish <em>Ictalurus punctatus</em>, hybrid striped bass <em>Morone saxatilis </em>x <em>M. chrysops</em>, and rainbow trout <em>Oncorhynchus mykiss </em>have been stocked into ponds and streams seasonally each subsequent year. One of the goals of the program has been to provide families and children with a convenient and excellent chance to catch fish. A toll-free stocking hotline (1-866-540-FISH) was initiated in January 2006 to inform anglers when and where fish had been stocked, so they could plan their fishing trips to program destinations accordingly. Hotline information was provided for 22 ponds during catfish season (April through November) and 17 ponds plus one stream during trout season (December through March). The hotline was generally updated within two hours after stocking, and consisted of information regarding immediate past stocking events as well as general fishing tips. Anglers placed 11,822 calls and spent 15,394 min of call-time on the hotline between January 2006 and May 2007. The number of calls peaked during catfish stocking season in June and was lowest during the September stocking off-season. On average, the hotline cost approximately $40 per month to operate and was four to six times less expensive than paying Commission personnel to answer stocking questions on the telephone. More than 36% of the hotline calls were placed outside of Commission business hours (0800-1630 hours), indicating that anglers were taking advantage of the 24-h information line. A toll-free hotline is a popular, inexpensive, and cost-effective means of supplying stocking information, allowing anglers to make informed decisions when choosing a day and location to fish at program locations.


2006 ◽  
Vol 72 ◽  
pp. 135-145 ◽  
Author(s):  
VE Ostland ◽  
JA Stannard ◽  
JJ Creek ◽  
RP Hedrick ◽  
HW Ferguson ◽  
...  

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