Cui-Ui Reproductive Success from Potential Egg Deposition to Larval Emigration

Scoppettone, G.G.; Rissler, Peter H.

doi:10.3398/064.072.0303

Cited by 5 publications

(8 citation statements)

References 20 publications

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“…Further, the very low larval production in Hibbard Creek (~1000) could not sustain a spawning population of over 10,000 adults, given further mortality during the juvenile and adult stages. Interannual variation in larval production is consistent with the general idea that spring flow conditions are important for early survival of catostomids (Johnston et al 1995;Bednarski et al 2008;Scoppettone & Rissler 2012) and suggests that abiotic conditions may contribute to recruitment variation in longnose suckers.…”

Section: Discussionsupporting

confidence: 83%

“…Interannual variation in larval production is consistent with the general idea that spring flow conditions are important for early survival of catostomids (Johnston et al 1995;Bednarski et al 2008;Scoppettone & Rissler 2012) and suggests that abiotic conditions may contribute to recruitment variation in longnose suckers. Further, the very low larval production in Hibbard Creek (~1000) could not sustain a spawning population of over 10,000 adults, given further mortality during the juvenile and adult stages.…”

Section: Discussionmentioning

confidence: 91%

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Spawning success and early life history of longnose suckers in Great Lakes tributaries

Childress

Papke

McIntyre

2015

Ecology of Freshwater Fish

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Fish eggs and larvae are often subject to very high mortality, and variation in early life survival can be important for population dynamics. Although longnose suckers (Catostomus catostomus) are widespread in northern North America, little is known about their early life history. We examined fecundity and early larval survivorship during sucker spawning events in three small Lake Michigan tributaries. Although egg deposition varied 25% among spawning events, estimated larval export to the lake varied over 25,000-fold from around 1000 to 26 million. Based on variation in environmental conditions across years, it appears that spring flow and temperature may be important determinants of egg survival to larval outmigration. Larval age data suggest that most individuals that survived to outmigration hatched during a 2-day period despite adult spawning across at least 10 days. Most larvae spent <2 weeks in the stream and emigrated around the time of transition from endogenous to exogenous feeding before substantial growth occurred. In two of three cases, larvae drifted exclusively at night; however, high drift rates occurred during both day and night in the case where larvae were very abundant, suggesting densitydependent drift behaviour. Our results indicate that survival in tributary streams from egg deposition to larval export is highly variable in longnose suckers. These large differences in early life survival may translate into variability in recruitment, thereby influencing population structure and dynamics.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 91%

Spawning success and early life history of longnose suckers in Great Lakes tributaries

Childress

Papke

McIntyre

2015

Ecology of Freshwater Fish

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“…Hypothesized causes of low survival include competition with non-native fishes, predation by birds, factors related to poor water quality, cyanotoxins, parasites, dietary deficiencies, and overwinter starvation (Martin and Saiki, 1999;Foott and Stone, 2005;Markle and Dunsmoor, 2007;Burdick, 2013;Kent and others, 2014;Burdick and others, 2015;Evans and others, 2016). Lack of recruitment to the adult Cui-ui (Chasmistes cujus) populations endemic to Pyramid Lake, Nevada, was a result of a lack of connectivity between rearing and spawning habitats that lead to a failure to reproduce (Scoppettone and Rissler, 2012). Low survival of early life stages due to predation has been hypothesized as the cause of limited adult recruitment for Razorback suckers (Xyauchen texanus) native to the Colorado River and June suckers (Chasmistes liorus) native to Utah Lake, Utah (Andersen and others, 2006;Marsh and others, 2015).…”

Section: Introductionmentioning

confidence: 99%

Inter-annual variability in apparent relative production, survival, and growth of juvenile Lost River and shortnose suckers in Upper Klamath Lake, Oregon, 2001–15

Burdick¹,

Martin²

2017

Open-File Report

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“…Thus, to prevent its extinction through periods of recruitment failure, the Pyramid Lake Paiute Tribe has cultured and stocked Cui-ui larvae since the 1970s. The number of fish stocked had been generally fewer than 1 million (B. Hooton, Pyramid Lake Fisheries, POPULATION DYNAMICS OF THE CUI-UI personal communication), a small fraction compared with that contributed by natural recruitment (Scoppettone and Rissler 2012) and, hence, is not considered to have had a major influence on the population dynamics observed in this study.…”

Section: Study Areamentioning

confidence: 89%

“…However, due to restricted passage over the Truckee River delta following several years of drought and lake level decline along with the inadequacy of the MBD facility to pass what was a dramatic increase in the population (Scoppettone and Rissler 2007), only 4,842 females passed upstream from MBD. Most of these females were young first-time spawners with low fecundity, producing a relatively modest number of larval emigrants entering Pyramid Lake (Scoppettone and Rissler 2012). Among marine and lake-dwelling fishes, size of the parental stock does not typically determine future year-class strength, which is instead linked to high survival of younger life stages (Roff 1981;Moser and Boehlert 1991;Cowan and Shaw 2002;Love et al 2002).…”

Section: Modelmentioning

confidence: 99%

Population Dynamics of the Cui‐ui of Pyramid Lake, Nevada: a Potamodromous Catostomid Subject to Failed Reproduction

Scoppettone

Rissler

Fabes

et al. 2015

N American J Fish Manag

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Fishes of the Truckee River basin (California and Nevada) evolved in an aquatic system that has been episodically diminished by extended drought. For potamodromous species, such as the endangered Cui-ui endemic to Pyramid Lake, Nevada, prehistoric episodic severe drought presumably led to periods of failed reproduction due to restricted access to spawning habitat. The response of the Cui-ui population to more recent failed reproduction caused by anthropogenic activity was studied to learn how to manage this species through periods of spawning disruption. Adult Cui-ui survival averaged 91% and 89% for females and males, respectively, in drought years when spawning migrations were either precluded or few fish migrated because of no or low stream flow. In each of 2 years when stream access was precluded, the adult survival was nearly 100% suggesting that Cui-ui survival is extended in the absence of a spawning migration. Survival averaged 62% and 60% for females and males, respectively, in years of spawning migrations. Strong predominant year-classes developed in the year immediately following a period of failed reproduction, indicating the species' capacity for population rebound. Year-class predominance persisted for 6-10 years and through years of low survival associated with migration years, and this predominance is probably due, in part, to a diverse age at maturity. Contemporary water diversions from the Truckee River provided the opportunity to study the response of the Cui-ui population to years of failed reproduction. A projected drier Truckee River basin associated with global climate change will test the Cui-ui's adaptive capacity to endure periods of reproductive failure. This study is aimed at assisting Cui-ui managers in conserving the species in this highly regulated and changing system. The study also adds insight into the prehistoric population dynamics of a potamodromous species in the arid western United States subject to wide fluctuations in annual precipitation and water availability.

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Cui-Ui Reproductive Success from Potential Egg Deposition to Larval Emigration

Cited by 5 publications

References 20 publications

Spawning success and early life history of longnose suckers in Great Lakes tributaries

Spawning success and early life history of longnose suckers in Great Lakes tributaries

Inter-annual variability in apparent relative production, survival, and growth of juvenile Lost River and shortnose suckers in Upper Klamath Lake, Oregon, 2001–15

Population Dynamics of the Cui‐ui of Pyramid Lake, Nevada: a Potamodromous Catostomid Subject to Failed Reproduction

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