Changes between consecutive broods in the fecundity of the spider crab, Maja brachydactyla

Verísimo, Patricia; Bernárdez, Cristina Fernández; González-Gurriarán, Eduardo; Freire, Juan; Muíño, Ramón; Fernández, Luis

doi:10.1093/icesjms/fsq164

Cited by 24 publications

(35 citation statements)

References 33 publications

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“…Variability in batch fecundity between crabs of a similar size is common in crustaceans and can be attributed to seasonal variation (Verísimo et al. ; González‐Pisani et al. ; Hjelset et al.…”

Section: Discussionmentioning

confidence: 99%

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Fecundity Assessment of Stone Crabs in the Eastern Gulf of Mexico

et al. 2019

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Accurate estimates of reproductive potential are a key component of any stock assessment. Multiple factors influencing the variability in batch fecundity of stone crabs Menippe spp. across the Florida fishery were quantified with a negative binomial regression model. Stone crabs were collected bimonthly from Cedar Key, Tampa Bay, Pavilion Key, and Sawyer Key from April 2013 through April 2015 for fecundity analysis. Batch fecundity (number of eggs per clutch) was estimated by using dry weights. Modeling results revealed that fecundity was strongly and positively related to carapace width and highly variable among locations, months, and years. Batch fecundity was lowest in spring and winter and highest in July and August, which agreed with the general understanding of seasonal patterns in crustacean reproductive cycles. Additionally, batch fecundity was 39% lower for crabs with no claws, indicating that claw removal by the fishery negatively affects reproductive output. Comparisons of estimates from a 1993–1995 fecundity study in Tampa Bay indicated that there was little difference in stone crab fecundity between individuals collected in 1993 and those collected in 2013. But this observed temporal pattern represents observations from only a small portion of the fished population and so may not fully reflect the temporal changes in fecundity occurring throughout the fishery. The present study quantified the spatial and temporal factors influencing variability in stone crab fecundity throughout the fished population of Florida. We hypothesize that spatial differences in food quality, food quantity, and fishing effort may be important drivers of variability in stone crab fecundity. Given the intense harvest and variability in reproductive output, further work should be dedicated to identifying critical spawning and recruitment areas, as well as assessments of their connectivity.

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Section: Discussionmentioning

confidence: 99%

“…), the number of previously extruded clutches (Mantelatto and Fransozo ; Verísimo et al. ), food availability (Annala and Bycroft ; France ; Lardies and Wehrtmann ; Bas et al. ; Verísimo et al.…”

Section: Discussionmentioning

confidence: 99%

Fecundity Assessment of Stone Crabs in the Eastern Gulf of Mexico

et al. 2019

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“…A female M . brachydactyla can produce an average of 300,000 eggs per brood (Pazos et al, ; Verísimo et al, ); however, it has been concluded that use of M . brachydactyla (as well as the Mediterranean spider crab, Maja squinado ) zoeae as feed for juvenile octopus production was not viable because of the need to maintain a large number of M .…”

Section: Introductionmentioning

confidence: 99%

Effects of co-supply ratios of swimming crab Portunus trituberculatus zoeae and Artemia on survival and growth of East Asian common octopus Octopus sinensis paralarvae under an upwelling culture system

et al. 2019

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Despite recent advances in culture technology for East Asian common octopus Octopus sinensis paralarvae using upwelling systems, securing suitable feed for the paralarvae is an unresolved issue. The zoea of the swimming crab Portunus trituberculatus is a good candidate for paralarval feed because of the high fecundity of the adult females. To investigate the effects of supplying P. trituberculatus zoeae and their feeding method on paralarvae, we cultured paralarvae with supplying different combination ratios of zoeae and Artemia (10:0, 7:3, 5:5, 3:7 and 0:10), and with or without supplementing rotifers using small‐scale (3‐L) upwelling systems. Paralarval survival rate and growth were improved when zoeae were supplied as the main feed, but reduced when the proportion of Artemia exceeded half the whole preys. Supplementing rotifers did not affect the paralarval survival and growth. Subsequently, paralarvae were cultured by supplying zoeae (partially augmented by Artemia) using three large (1‐kl) upwelling systems to assess their feeding effectiveness in juvenile octopus production. Paralarvae could be cultured at high survival rates of 77.1 ± 5.1% to reach benthic juveniles at 23 days after hatching. In conclusion, supplying P. trituberculatus zoeae augmented with Artemia under an upwelling culture system has great potential for juvenile octopus production.

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“…), displays high fecundity (Verisimo et al . ), is able to produce multiple clutches of embryos per breeding season (Gonzalez‐Gurriaran et al . ) and exhibits a short period of embryonic development (Iglesias et al .…”

Section: Introductionmentioning

confidence: 99%

High environmental salinity reduces the reproductive potential of the spider crab Maja brachydactyla (Decapoda, Majidae)

et al. 2014

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The spider crab Maja brachydactyla is an important fisheries species in Europe. Adults were sampled in R ıa de A Coruña (NW Spain) and transported to IRTA rearing facilities. Salinity and photoperiod changes and their effect on reproduction were tested in the laboratory. The number of newly hatched larvae per batch (presence of actively swimming newly hatched larvae in a broodstock tank) was counted and sampled to estimate dry weight and proximal composition. Keeping spider crab broodstock in a high salinity environment (38 ppt) significantly reduced the number of newly hatched larvae, reaching up to fivefold difference in winter. The number of newly hatched larvae produced under a natural photoperiod was 10-fold higher than those produced using a fixed photoperiod at 34 ppt salinity during winter. No clear pattern of changes in larval dry weight, protein, lipid or carbohydrate composition was observed under the environmental conditions tested. The results show that the salinity used for broodstock maintenance, especially during the embryonic development, is an important factor causing changes in larval production of M. brachydactyla and with potential implications for recruitment success.

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Changes between consecutive broods in the fecundity of the spider crab, Maja brachydactyla

Cited by 24 publications

References 33 publications

Fecundity Assessment of Stone Crabs in the Eastern Gulf of Mexico

Fecundity Assessment of Stone Crabs in the Eastern Gulf of Mexico

Effects of co-supply ratios of swimming crab Portunus trituberculatus zoeae and Artemia on survival and growth of East Asian common octopus Octopus sinensis paralarvae under an upwelling culture system

High environmental salinity reduces the reproductive potential of the spider crab Maja brachydactyla (Decapoda, Majidae)

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