Genomic analyses indicate two blue swimmer crab species in Australia, evidence for natural interspecific hybridization and genetic structure within species with implications for fisheries management and stock enhancement

Premachandra, H.K.A.; Becker, Alistair; Millard, Koreen; Johnston, Danielle; Subramanian, Sankar; Kumar, Manoharan; Taylor, Matthew D.; Knibb, Wayne

doi:10.1016/j.fishres.2023.106757

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…The presumed hybrids of mud crab have been reported in countries such as Japan, 57 Philippines, 84 and Malaysia 79,85 . Although morphological discrimination of the presumed mud crab hybrid is challenging, molecular analysis was used to authenticate the validity of the hybrid claims 56,57,79,83,84,86 …”

Section: Hybridization In Decapod Crustaceanmentioning

confidence: 99%

“…79,85 Although morphological discrimination of the presumed mud crab hybrid is challenging, molecular analysis was used to authenticate the validity of the hybrid claims. 56,57,79,83,84,86 The observation of several male crabs identified as Carcinus aestuarii but having a carapace width to length ratios typical of the Carcinus maenas provides the only morphological evidence that some crabs may be of mixed parentage. 52,87 In the wild population of snow crabs in the Southeastern Bering Sea, it was also reported that there was an atypical morphological characteristic for either Chionoecetes bairdi or Chionoecetes opilio, which was assumed as evidence of hybridization.…”

Section: Distinguishment Of Natural Interspecific Hybridization Of Sh...mentioning

confidence: 99%

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Interspecific hybridization of decapod crustacean species with commercial interest—A review

Syafaat,

Abualreesh,

Yatim

et al. 2023

Reviews in Aquaculture

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Interspecies hybridization has been widely used in the development of aquaculture in fish species but there is not much impact in crustacean species. Several species of crustaceans that have been successfully crossed still have low hatching rates and the hybrids obtained have not met expectations. This review tries to summarize and analyse interspecific hybridization of cultured crustacean species (shrimps, lobsters, crayfish and crabs) and its potential for development of crustacean aquaculture production. The success of cross‐breeding on several species of shrimp and lobster has been supported by artificial insemination technology. In crabs, artificial insemination cannot be applied and cross‐breeding still relies on natural mating with an unstable success rate. In addition to cross‐breeding in captivity, cross‐breeding of crustacean species (shrimp, lobster, crayfish and crab) in nature has also been found. Interbreeding of crustacean species in nature cannot always be distinguished morphologically, hybrids between them can be known with certainty after carrying out molecular analysis. Even though the level of reproductive performance in cross‐breeding of shrimp, lobster, crayfish and crab species is still low, cross‐breeding efforts must be continued to obtain more information so that it can later be mapped which species have the potential to develop hybrids for cultivation. Furthermore, growth, reproductive performance, monosex hybridity and disease resistance are all hybrid parameters that must be evaluated.

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Section: Hybridization In Decapod Crustaceanmentioning

confidence: 99%

Section: Distinguishment Of Natural Interspecific Hybridization Of Sh...mentioning

confidence: 99%

Interspecific hybridization of decapod crustacean species with commercial interest—A review

Syafaat,

Abualreesh,

Yatim

et al. 2023

Reviews in Aquaculture

View full text Add to dashboard Cite

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Population genomics provides evidence of interspecific hybridisation and population structure in the blue-swimmer crab (Portunus armatus) along the Western Australian coastline

Briggs,

Johnston,

Kennington

2024

Fisheries Research

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Capture Probability of Blue Swimmer Crab (Portunus armatus) in Baited Traps and Implications for Trap Survey Design

Becker,

Johnson,

Pederson

et al. 2024

Fisheries Management Eco

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Fishery independent surveys provide valuable data for fisheries assessments that predominantly rely on trends in catch per unit effort (CPUE). Many crustacean fisheries are harvested using traps, so this gear is often used for fishery independent surveys. The areal sampling unit for baited traps is normally poorly understood, so surveys can be biased if sampling areas overlap. The blue swimmer crab (Portunus armatus) is an important commercial and recreational species distributed around the warm temperate and tropical coast of Australia, and stock management typically relies on catch data supplemented by independent surveys. Acoustic telemetry was used to track fine‐scale movements of 37 crabs in response to deployment of baited‐traps and to estimate probability of capture relative to distance from the trap. Traps attracted crabs from an initial distance up to 70 m, with most movements towards traps after dark. Capture probability increased with decreasing initial distance from a deployed trap. Despite this, the probability of capture was < 50% for crabs positioned adjacent to a deployed trap, which could lead to a mismatch between catch and crab abundance if the proportion of catchable crabs varied with abundance. Our findings reinforced that nocturnal sampling was more appropriate for the species, and we recommend that traps be no closer than 140 m apart. Our findings also demonstrated the utility of fine‐scale acoustic telemetry for informing survey designs and may serve as a template for other trap surveys and fisheries.

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Genomic analyses indicate two blue swimmer crab species in Australia, evidence for natural interspecific hybridization and genetic structure within species with implications for fisheries management and stock enhancement

Cited by 3 publications

References 37 publications

Interspecific hybridization of decapod crustacean species with commercial interest—A review

Interspecific hybridization of decapod crustacean species with commercial interest—A review

Population genomics provides evidence of interspecific hybridisation and population structure in the blue-swimmer crab (Portunus armatus) along the Western Australian coastline

Capture Probability of Blue Swimmer Crab (Portunus armatus) in Baited Traps and Implications for Trap Survey Design

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