FisheriesVolume 41, Issue 7 p. 396-399 Perspective: Fish Health Section Climate Change and Considerations for Professionals Luciano Chiaramonte, Chiaramonte Eagle Laboratory, Idaho Department of Game, 1800 Trout Road, Eagle, ID, 83616Search more papers by this authorDoug Munson, Doug Munson authorJesse Trushenski, Corresponding Author Jesse Trushenski jesse.trushenski@idfg.idaho.gov 83616Corresponding author: E-mail: jesse.trushenski@idfg.idaho.govSearch author First published: 29 June 2016...

Abstract Salmon in the Klamath River of northern California contend with water temperatures that reach stressful and sometimes lethal levels during summer, forcing them to seek thermal refuge at coolwater tributary junctions. During migration, these fish also encounter a range pathogens affect their survival. A significant myxozoan parasite, Ceratonova shasta , causes enteronecrosis salmon, this disease increases severity as temperature parasite dose increase. In complementary laboratory...

Abstract While whirling disease was first observed in Rainbow Trout Oncorhynchus mykiss 1893, the complete life cycle of Myxobolus cerebralis (Mc), causative agent disease, not understood until 1984, when it shown to involve two obligate hosts, a salmonid fish and aquatic oligochaete Tubifex tubifex (Tt). The viability triactinomyxon (TAM) actinospores produced by Tt has been well studied, is known be temperature dependent measured days weeks. Assertions that Mc myxospores infected remain...

Abstract Establishment of Myxobolus cerebralis (Mc) resulted in declines wild Rainbow Trout Oncorhynchus mykiss populations streams across Colorado during the 1990s. However, risk for establishment and spread this parasite into high-elevation habitats occupied by native Cutthroat O. clarkii was unknown. Beginning 2003, tubificid worms were collected from all major drainages where endemic assayed quantitative PCR to determine occurrence distribution various lineages Tubifex tubifex (Tt)...

Abstract Nonlethal sampling techniques have previously been evaluated for detection of a variety viral salmonid pathogens. However, many these studies used molecular assays in lieu widely accepted cell culture to evaluate the sampled tissues. Samples were collected from female steelhead Oncorhynchus mykiss broodstock using three potential nonlethal methods (mucus/skin scrape, pectoral fin clip, and gill tissue biopsy) presence infectious hematopoietic necrosis virus (IHNV) via techniques....

Abstract Potential effects of air exposure and fight times on fish caught released by anglers have been increasingly studied in recent years, yet little is known about how long actually the expose them to before releasing them. In present study, were measured for catching popular steelhead Oncorhynchus mykiss fisheries Idaho, other relevant factors also recorded such as fishing gear (fly or nonfly), occurrence photographing their catch, landing method (with net hand), whether was hooked...

Abstract The abundance of piscivorous colonial waterbirds such as double‐crested cormorants Phalacrocorax auritus and American white pelicans Pelecanus erythrorhynchos has increased dramatically in recent decades North America, resulting conflict between these birds fisheries resources, which raises the need to quantify effects waterbird predation on fisheries. We estimated avian angler use two sizes hatchery‐reared Rainbow Trout Oncorhynchus mykiss (250 mm 300 average; termed standard...

Abstract Electrofishing studies in the 1990s established that higher frequencies of pulsed DC (e.g., 60 Hz) generally result more spinal injury to fish comparison with lower pulse 30 Hz). In response those findings, some agencies adopted low frequency standards minimize injury. However, earlier did not assess whether capture efficiency (CE) was also influenced by frequency. We sampled small trout streams (1–6‐m average width; SE = 0.14 m) backpack electrofishing settings and Hz evaluate...

DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 121:37-47 (2016) - DOI: https://doi.org/10.3354/dao03025 Accelerated deactivation Myxobolus cerebralis myxospores by susceptible and non-susceptible Tubifex tubifex R. Barry Nehring1,*, George J. Schisler2, Luciano Chiaramonte3, Annie Horton1, Barbara Poole1 1Colorado Division Parks Wildlife, 2300 South Townsend...

Abstract We present a 100-Watt protocol for backpack electrofishing to capture salmonids in small streams. The requires that electrofisher settings produce ~100 W of average power output. Since 2000, the has been used Idaho streams ranging ambient conductivity from ~20–1,000 µS/cm and water temperatures ~0–28°C, results satisfactory efficiency desired fish response (i.e., taxis immobilization) pulse frequencies 30–60 Hz. Moreover, resulting spinal injuries are low (<5%) similar...

Abstract Myxobolus cerebralis (Mc) is a myxozoan parasite causing whirling disease in hatchery- and natural-origin salmonids. To minimize spread of this the incidence its associated disease, fish health professionals routinely screen for Mc before stocking or moving to Mc-free waters. Sample collection traditionally entails lethal sampling cranial tissue followed by pepsin–trypsin digest (PTD) screening sample mature myxobolid myxospores (PTD method); however, nonlethal methods would be...

Abstract Objective Historically, most high mountain lakes in western North America were devoid of fish, but during the past century, many have been stocked with salmonids to diversify angling opportunities. Basic information on harvest and catch release (C–R) for lake fisheries is lacking, as factors influencing such settings; our objectives fill these knowledge gaps. Methods Using gear, we captured implanted T‐bar anchor tags into 1163 various species (fish wild origin or hatchery fish fry;...

Abstract Community pond fisheries are valuable recreational resources for anglers because of their ease access and often‐regular stocking frequency. Effective management these requires an understanding how bag limits, frequency, density, angler effort affect satisfaction catch rates. We released tagged, catchable‐sized Rainbow Trout Oncorhynchus mykiss conducted creel surveys at Idaho ponds with either two‐ or six‐trout daily limits (hereafter, “two‐trout ponds” “six‐trout ponds”) to...

It has been well documented that circle hooks generally reduce deep hooking of bait-caught fish. However, for decades there speculation the hook eye must be straight relative to shank function properly, yet this aspect configuration rarely investigated. Using a passive set when strikes were detected, we compared rates and catch probability stream-dwelling trout (Yellowstone cutthroat [Oncorhynchus clarkii bouvieri Jordan & Gilbert], rainbow [O. mykiss Walbaum], × hybrids) caught using baited...

Abstract Fishing with circle hooks along prescribed hook‐setting methods can reduce deep‐hooking rates in some fisheries, but baited have not been evaluated stillwater trout fisheries. Deep‐hooking and catch probabilities were compared for cutthroat Oncorhynchus clarkii​ (Richardson), rainbow Oncorhyncus mykiss (Walbaum), × hybrids, brook Salvelinus fontinalis (MItchill) caught using three types of (circle, intermediate traditional J) two (active passive) several lakes containing naturally...

Se describe un paciente de sexo masculino 64 años edad al que tres semanas previas se le realizó litotricia extracorpórea.Ingresó por dolor abdominal persisten te y shock hipovolémico.La Tomografía demostró hematoma retro peritoneal pseudoaneurisma aorta abdominal.Se efectuó tratamiento endovascular , im plantando dos stents balónexpandibles cubiertos con PTFE (CheathamPlatinum Stent Numed ®), en forma telescopada para asegurar la cobertura ruptura .El requirió internación prolongada pero...