Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus

Moland, Even; Olsen, Esben Moland; Stenseth, Nils Chr.

doi:10.3354/meps08397

Cited by 47 publications

(29 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These negative impacts of larger individual-selective fishing through maternal influences need to be considered in resource management strategies to attain sustainable yields from fishery resources. However, there have been very few studies on maternal influences in decapod crustaceans (estuarine grapsid crab Chasmagnathus granulate, Giménez and Anger 2003;southern rock lobster, Smith and Ritar 2007;blue crab, Darnell et al 2009; European lobster Homarus gammarus, Moland et al 2010), despite the fact that this group includes large numbers of important fishery resources.…”

Section: Plausible Interaction Between Maternal Influences and Femalementioning

confidence: 99%

Impacts of Large Male-Selective Harvesting on Reproduction: Illustration with Large Decapod Crustacean Resources

Sato¹

2012

Aqua-BioSci. Monogr. (ABSM)

View full text Add to dashboard Cite

Keywordsbeen reported in many species of vertebrates and invertebrates (e.g. Bianchi et al. 2000;Branch and Odendaal 2003;Roy et al. 2003;Harvey et al. 2006).In a wide range of taxa, body size is one of the key determinants of fitness in both males and females (Andersson 1994). For example, body size is positively correlated with reproductive fitness (e.g. mating success and fecundity). Mostly, larger males are stronger competitors for females (e.g. Hoefler 2007) or can provide more ejaculated sperm (e.g. Jivoff 1997), or better care for the offspring (e.g. Kolm 2002). In females, body size positively correlates with egg size (e.g. Einum and Fleming 1999), number of spawning (e.g. Claramunt et al. 2007), number of eggs spawned (e.g. Evans et al. 2008), or quality of larvae (e.g. Berkeley et al. 2004). Therefore, mate choice is non-random in the majority of animal species (Real 1990), and males and females prefer larger mates mutually (e.g. Sandvik et al. 2000;Herdman et al. 2004; Aquiloni and Gherardi AbstractTo signal a need for caution for present large male-selective harvesting practices, negative impacts of the large male-selective harvesting on reproductive output in large decapod crustacean resources are introduced with emphasis on my own work with spiny king crab Paralithodes brevipes, coconut crab Birgus latro, and the stone crab Hapalogaster dentata. The large male-selective harvestings for several large decapod crustaceans have changed their population demographic structure by decreasing mean male size and skewing sex ratio towards females. By several field and laboratory experiments, the change of population demographic structure was anticipated to decrease female reproductive success in the resources (i.e. reproductive output of the harvested populations) through a decrease in sperm availability for females because of male size-dependent reproductive potentials and slow sperm recovery rate. Furthermore, reproductive output and stability of the large male-selective harvested resources were also anticipated to decline by a decrease in mate availability for females, attributing to combination of female mate choice for larger males with negative effects of female delayed mating and/or maternal influences. To establish the optimal management practices, the details of the mating system and reproductive ecology of each targeted species should be investigated.

show abstract

Section: Plausible Interaction Between Maternal Influences and Femalementioning

confidence: 99%

Impacts of Large Male-Selective Harvesting on Reproduction: Illustration with Large Decapod Crustacean Resources

Sato¹

2012

Aqua-BioSci. Monogr. (ABSM)

View full text Add to dashboard Cite

show abstract

“…Studies have shown that large female lobsters are reproductively more successful than their smaller counterparts [29], hence the greater abundance of large ovigerous females in the NTZ highlights the potential for increased egg production within the reserve. These large female lobsters may therefore help maintain numerous fisheries stocks via recruitment subsidy.…”

Section: Resultsmentioning

confidence: 99%

Increased Disease Calls for a Cost-Benefits Review of Marine Reserves

Wootton

Woolmer²,

Vogan

et al. 2012

PLoS ONE

View full text Add to dashboard Cite

Marine reserves (or No-Take Zones) are implemented to protect species and habitats, with the aim of restoring a balanced ecosystem. Although the benefits of marine reserves are commonly monitored, there is a lack of insight into the potential detriments of such highly protected waters. High population densities attained within reserves may induce negative impacts such as unfavourable trophic cascades and disease outbreaks. Hence, we investigated the health of lobster populations in the UK’s Marine Conservation Zone (MCZ) at Lundy Island. Comparisons were made between the fished, Refuge Zone (RZ) and the un-fished, No-Take Zone (NTZ; marine reserve). We show ostensibly positive effects such as increased lobster abundance and size within the NTZ; however, we also demonstrate apparent negative effects such as increased injury and shell disease. Our findings suggest that robust cost-benefit analyses of marine reserves could improve marine reserve efficacy and subsequent management strategies.

show abstract

“…The dry weight of eggs has been shown to be size dependent, such that larger females produce heavier eggs (Agnalt 2008). Heavier eggs also develop into larger larvae (Moland et al 2010), a typical case of maternal effect. Larger females may produce more viable offspring and this could have an effect on the efficiency of MinMaxLS harvesting strategy.…”

Section: Discussionmentioning

confidence: 99%

Modelling harvesting strategies for the lobster fishery in northern Europe: the importance of protecting egg‐bearing females

et al. 2014

View full text Add to dashboard Cite

European lobster populations in Norway and Sweden are severely reduced as a result of intense harvesting over a long time. Various alternative management options have been proposed or endorsed to both facilitate recovery and increase yield. Accordingly, Minimum Landing Size (MLS) regulations are widely used for the European lobster. We developed an individual-based population model which integrates biological knowledge about lobsters' population dynamics to explore how available harvesting strategies and management options influence abundance and yield. The model reproduced basic features of a real lobster population in Sweden. Even for a relatively large MLS high fishing effort may still be detrimental to the long term production of the stock, while increasing the MLS further prevents this recruitment overfishing. A moratorium on berried females, in combination with the MLS appears to stabilize population fluctuations and yield, leading to higher yield for all MLS's considered. The female moratorium harvesting strategy also performed better than a maximum size limit. Yield per recruit calculations gave similar quantitative results, and also shows that a larger MLS reduce the risk of growth overfishing. A smaller MLS enables the harvest of many individuals but is very sensitive to increase in effort which easily promotes overfishing.Keywords European lobster Á Female moratorium Á Individual-based model Á Management Á Minimum landing size Á Yield per recruit (YPR)Electronic supplementary material The online version of this article (

show abstract

Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus

Cited by 47 publications

References 40 publications

Impacts of Large Male-Selective Harvesting on Reproduction: Illustration with Large Decapod Crustacean Resources

Impacts of Large Male-Selective Harvesting on Reproduction: Illustration with Large Decapod Crustacean Resources

Increased Disease Calls for a Cost-Benefits Review of Marine Reserves

Modelling harvesting strategies for the lobster fishery in northern Europe: the importance of protecting egg‐bearing females

Contact Info

Product

Resources

About