The Life History of Leptoxis dilatata (Conrad) (Prosobrancia: Pleuroceridae) from the Laurel Fork River, West Virginia

Miller-Way, Christine A.; Way, Carl M.

doi:10.2307/2425695

Cited by 11 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies of populations of Leptoxis spp. and other pleurocerid snails also found sex ratios ranging from balanced to femalebiased (Aldridge 1982, Hendrix 1986, Miller-Way and Way 1989, reviewed by Dillon 2000, but sampling was generally not conducted over multiple seasons and snail generations at multiple sites. The low within-site variation in proportions of females in Leptoxis spp.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies of Leptoxis carinata and L. dilatata have shown that these species are semelparous biennials; 2-year old snails lay eggs between late spring and mid-summer and die by late summer (Aldridge 1982, Hendrix 1986, Miller-Way and Way 1989. Only adult (> 1 yr old, > 7 mm shell length) snails were included in sex ratio calculations because sexes are not morphologically distinct until the second summer of life (Aldridge 1982, Hendrix 1986 At each study site, quadrat sampling at randomly selected locations in one riffl e was performed.…”

Section: Snail Samplingmentioning

confidence: 99%

“…Freshwater snails in the family Pleuroceridae (Superorder Caenogastropoda: Order Sorbeoconcha: Superfamily Cerithioidea) are gonochoristic with sexual reproduction and limited studies of other freshwater caenogastropods suggest that sex is genetically determined (reviewed by Dillon 2000, Yusa 2007). Population sex ratios ranging from balanced to female-biased have been observed for pleurocerid snails (reviewed by Dillon 2000, see also Aldridge 1982, Hendrix 1986, Miller-Way and Way 1989. However, samples were generally not collected at multiple sites over multiple seasons.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Population Sex Ratios of Pleurocerid Snails (Leptoxisspp.): Variability and Relationships with Environmental Contaminants and Conditions

Ciparis

Henley

Voshell

2012

American Malacological Bulletin

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Section: Snail Samplingmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Population Sex Ratios of Pleurocerid Snails (Leptoxisspp.): Variability and Relationships with Environmental Contaminants and Conditions

Ciparis

Henley

Voshell

2012

American Malacological Bulletin

View full text Add to dashboard Cite

“…Depending on the species, pleurocerids may be either iteroparous or semelparous (Richardson et al 1988;Miller-Way and Way 1989;Whelan et al in press), and deposition of eggs can occur as single eggs or in a variety of different clutch morphologies and sizes (e.g., Jewell 1931;Winsor 1933;Rosewater 1960;Dazo 1965;Whelan et al in press). Depending on the species, pleurocerids may be either iteroparous or semelparous (Richardson et al 1988;Miller-Way and Way 1989;Whelan et al in press), and deposition of eggs can occur as single eggs or in a variety of different clutch morphologies and sizes (e.g., Jewell 1931;Winsor 1933;Rosewater 1960;Dazo 1965;Whelan et al in press).…”

Section: Introductionmentioning

confidence: 99%

Seasonal reproductive anatomy and sperm storage in pleurocerid gastropods (Cerithioidea: Pleuroceridae)

Whelan

Strong

2014

Can. J. Zool.

View full text Add to dashboard Cite

Life histories, including anatomy and behavior, are a critically understudied component of gastropod biology, especially for imperiled freshwater species of Pleuroceridae. This aspect of their biology provides important insights into understanding how evolution has shaped optimal reproductive success and is critical for informing management and conservation strategies. One particularly understudied facet is seasonal variation in reproductive form and function. For example, some have hypothesized that females store sperm overwinter or longer, but no study has explored seasonal variation in accessory reproductive anatomy. We examined the gross anatomy and fine structure of female accessory reproductive structures (pallial oviduct, ovipositor) of four species in two genera (Leptoxis ampla (Anthony, 1855), Pleurocera prasinata (Conrad, 1834), P. pyrenella (Conrad, 1834) and P. canaliculata (Say, 1821)). Histological analyses show that despite lacking a seminal receptacle, females of these species are capable of storing orientated sperm in their spermatophore bursa. Additionally, we found that they undergo conspicuous seasonal atrophy of the pallial oviduct outside the reproductive season, and there is no evidence that they overwinter sperm. The reallocation of resources primarily to somatic functions outside of the egg-laying season is likely an adaptation that increases survival chances during winter months. . 1964. The radula, genital system, and external morphology in Mudalia potosiensis (Lea) 1841 (Gastropoda: Prosobranchiata: Pleuroceridae) with life history notes. Trans. Am. Microsc. Soc. 83(1): 41-62. Kirkwood, T.B.L., and Shanley, D.P. 2005. Food restriction, evolution and ageing. Mech. Ageing Dev. 126(9):

show abstract

“…Sublethal tests had been conducted, but no true chronic studies were found. If chronic exposures are defined by one tenth of the organism's life span, then a chronic test for Leptoxis praerosa (voucher specimens identified by Dr. R. Dillon, University of South Carolina, USA), a semelparous, biennial pleurocerid snail, should last approximately 70 d, assuming a 2‐year life span [11,12]. Exposures of 10 d to 50 μg Zn/L or greater [13] and exposures of 20 d to power plant effluents [14] have been shown to impair cellulolytic enzyme activity in Mudalia dilatata , a species closely related to Leptoxis spp.…”

Section: Introductionmentioning

confidence: 99%

Functional responses inLeptoxis praerosato increasing metal concentration and exposure duration

Reed-Judkins

Farris

Cherry

et al. 1997

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

The protectiveness of USEPA ambient water quality criteria for copper (Cu) and zinc (Zn) was tested using the snail Leptoxis praerosa in short‐ and long‐term artificial stream tests. Acute criteria were tested in 96‐h survival tests. Chronic criteria were tested by comparing cellulolytic enzyme activity impairment, bioconcentration, and survival in 14‐, 20‐, 30‐, and 114‐d exposures. Significant Cu bioconcentration occurred within 40 d at the chronic Cu criteria concentration, followed by significant cellulolytic enzyme activity impairment within 54 d. Significant bioconcentration and enzyme activity impairment occurred within 40 and 54 d, respectively, at the chronic Zn criteria concentration, but survival was much higher than in Cu‐exposed snails. Approximate additive effects were seen in combination treatments of Cu and Zn. Similar patterns of effects were seen from both increased exposure duration and concentration. This research concluded that criteria based on abbreviated chronic tests may be underprotective for some sensitive taxa when exposures are prolonged.

show abstract

The Life History of Leptoxis dilatata (Conrad) (Prosobrancia: Pleuroceridae) from the Laurel Fork River, West Virginia

Cited by 11 publications

References 0 publications

Population Sex Ratios of Pleurocerid Snails (Leptoxisspp.): Variability and Relationships with Environmental Contaminants and Conditions

Population Sex Ratios of Pleurocerid Snails (Leptoxisspp.): Variability and Relationships with Environmental Contaminants and Conditions

Seasonal reproductive anatomy and sperm storage in pleurocerid gastropods (Cerithioidea: Pleuroceridae)

Functional responses inLeptoxis praerosato increasing metal concentration and exposure duration

Contact Info

Product

Resources

About