Impacts of male-only fishing and sperm limitation in manipulated populations of an unfished crab, Hapalogaster dentata

Sato, Taku; Goshima, Seiji

doi:10.3354/meps313193

Cited by 67 publications

(43 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1994; Sato et al . 2005; Sato & Goshima 2006). A skewed sex ratio can limit the reproductive potential of fished populations via sperm limitation or delayed mating (Sato & Goshima 2006).…”

Section: Consequences Of Size‐selective Harvestingmentioning

confidence: 99%

Ecological and evolutionary consequences of size‐selective harvesting: how much do we know?

2007

View full text Add to dashboard Cite

Size-selective harvesting, where the large individuals of a particular species are preferentially taken, is common in both marine and terrestrial habitats. Preferential removal of larger individuals of a species has been shown to have a negative effect on its demography, life history and ecology, and empirical studies are increasingly documenting such impacts. But determining whether the observed changes represent evolutionary response or phenotypic plasticity remains a challenge. In addition, the problem is not recognized in most management plans for fish and marine invertebrates that still mandate a minimum size restriction. We use examples from both aquatic and terrestrial habitats to illustrate some of the biological consequences of size-selective harvesting and discuss possible future directions of research as well as changes in management policy needed to mitigate its negative biological impacts.

show abstract

“…1994; Sato et al . 2005; Sato & Goshima 2006). A skewed sex ratio can limit the reproductive potential of fished populations via sperm limitation or delayed mating (Sato & Goshima 2006).…”

Section: Consequences Of Size‐selective Harvestingmentioning

confidence: 99%

Ecological and evolutionary consequences of size‐selective harvesting: how much do we know?

2007

View full text Add to dashboard Cite

show abstract

“…Large females, which produce the highest number of eggs, are most successfully fertilised by large males (Schmidt and Pengilly, 1990;Kruse, 1993). Females mating with small males with less sperm capacity have lower fertilisation success than females that mate with larger males Paul, 1990a,b, 1997;Sato and Goshima, 2006). Other studies report that large females are sometimes observed without broods or with reduced brood sizes , which may be due to unsuccessful mating with smaller males.…”

Section: Introductionmentioning

confidence: 94%

Reduced size composition and fecundity related to fishery and invasion history in the introduced red king crab (Paralithodes camtschaticus) in Norwegian waters

2012

View full text Add to dashboard Cite

“…Finally, in most mating systems, fertilization occurs at a ratio of sperm to eggs much greater than 1:1 (Hines et al 2003). Many studies, particularly those on decapod crustaceans, have used the ratio of sperm to eggs to infer the presence of sperm limitation in a population, with low ratios being cited as evidence for such limitation (Rondeau and Sainte-Marie 2001;Hines et al 2003;Sato and Goshima 2006;Ogburn et al 2014). Knowledge of the sperm : egg ratio required for optimal reproductive success is especially important for management because it permits direct estimation of the potential reproductive impairment when combined with field estimates of total sperm counts in females.…”

Section: Sex Ratios and Sperm Per Female For Blue Crabsmentioning

confidence: 99%

“…However, sperm may be the limiting resource in some free-spawning marine species (Levitan and Petersen 1995), particularly crustaceans (Rondeau and Sainte-Marie 2001;Hines et al 2003;Sato and Goshima 2006;Ogburn et al 2014) and protogynous fishes that have internal fertilization (Alonzo and Mangel 2005). Fisheries can induce such limitation by reducing the abundance of adult males and/or their average size (Sato and Goshima 2006). A reduction in the number of males available for mating could cause an Allee effect, in which females cannot find mates or males mate too frequently to recuperate adequate sperm.…”

mentioning

confidence: 99%

Sex Ratios and Average Sperm per Female Blue CrabCallinectes sapidusin Six Tributaries of Chesapeake Bay

2016

View full text Add to dashboard Cite

Sperm limitation has been a concern for several crustacean species around the world. It may be of particular concern for blue crabs Callinectes sapidus in Chesapeake Bay due to the species’ reproductive biology and the sex‐specific fishery regulations in place. Our objectives were to characterize the differences in sperm counts in mated females from six tributaries of the Chesapeake Bay and to determine whether sperm quantity was affected by the ratio of males to females in each system. Mature females were sampled 1–4 times in each tributary on a biweekly schedule from September to November 2011. We quantified sperm storage for each crab by microscopic examination and compared the sperm counts of females among river systems with the adult male : female sex ratios using ANOVA and linear regression. Total sperm quantity per female varied 16‐fold (0.9–13.0 × 108) among tributaries. The sex ratio was also variable among tributaries. Total sperm quantity per female was not significantly related to sex ratio, tributary, or month but was negatively related to the development stage of the spermathecae. Estimated sperm : egg ratios varied from 153:1 to 2:1 but were always higher than 1:1. Our results suggest that sperm quantities are not affected by male : female sex ratios and that sperm limitation caused by low sex ratios is likely not a concern in tributaries similar to those in our study. Received April 3, 2015; accepted June 24, 2016

show abstract

Impacts of male-only fishing and sperm limitation in manipulated populations of an unfished crab, Hapalogaster dentata

Cited by 67 publications

References 44 publications

Ecological and evolutionary consequences of size‐selective harvesting: how much do we know?

Ecological and evolutionary consequences of size‐selective harvesting: how much do we know?

Reduced size composition and fecundity related to fishery and invasion history in the introduced red king crab (Paralithodes camtschaticus) in Norwegian waters

Sex Ratios and Average Sperm per Female Blue CrabCallinectes sapidusin Six Tributaries of Chesapeake Bay

Contact Info

Product

Resources

About