Infestation and morphological identification of the stalked epizoic barnacle Octolasmis on the blue crab Portunus pelagicus from the Red Sea

Khattab, Rafat A.

doi:10.1007/s00343-018-7007-y

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…High infestation rate of fouling organisms such as barnacles have various negative effects (obstruct the respiratory and movement, change the behavior) on crustacean hosts (Gaddes & Sumpton, 2004;Machado et al, 2013;Amalia et al, 2016;Le, Dang & Tran, 2018). The fact that O. angulata is an extremely common symbiont, occurring on up to 90% of individuals in the host populations, and with intensities of more than 1,000 individuals (Shields, 1992;Khattab, 2017;Le, Dang & Tran, 2018), may indicate a long-term commensalism, and an effective strategy to successfully colonize and/or recolonize the host crabs. We plotted the infestation rates of O. angulata against the host distribution in order to investigate the correlation between symbiotic infestation and host spatial genetics.…”

Section: Symbiont Infestation and Host Distributionmentioning

confidence: 99%

Comparative population genetics of swimming crab host (Portunus pelagicus) and common symbiotic barnacle (Octolasmis angulata) in Vietnam

Dang

Truong

Tran

et al. 2021

PeerJ

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Background By comparing spatial geographical structures of host populations with that of their symbionts light can be shed on their biological interactions, and the degree of congruence between host and symbiont phylogeographies should reflect their life histories and especially dispersal mechanisms. Methods Here, we analyzed the genetic diversity and structure of a host, the blue swimming crab, Portunus pelagicus, and its symbiotic pedunculate barnacle Octolasmis angulata from six location sites representing three geographic regions (north, central and south) along the Vietnam coastline. High levels of congruence in their phylogeographic patterns were expected as they both undergo planktonic larval stages. Results Based on the COI mtDNA markers, O. angulata populations showed higher genetic diversity in comparison with their host P. pelagicus (number of haplotype/individuals, haplotype and nucleotide diversity are 119/192, 0.991 ± 0.002 and 0.02; and 89/160, 0.913 ± 0.02 and 0.015, respectively). Pairwise Fst and AMOVA analyses showed a more pronounced population structure in the symbiotic barnacle than in its crab host. The DAPC analyses identified three genetic clusters. However, both haplotype networks and scatter plots supported connectivity of the host and the symbiotic barnacle throughout their distribution range, except for low subdivision of southern population. Isolation by distance were detected only for the symbiont O. angulata (R2 = 0.332, P = 0.05), while dbMEM supported spatial structure of both partners, but only at MEM-1 (Obs. 0.2686, P < 0.01 and Obs. 0.2096, P < 0.01, respectively).

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Section: Symbiont Infestation and Host Distributionmentioning

confidence: 99%

Comparative population genetics of swimming crab host (Portunus pelagicus) and common symbiotic barnacle (Octolasmis angulata) in Vietnam

Dang

Truong

Tran

et al. 2021

PeerJ

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Molecular phylogeny, prevalence and intensity adhesion of ectosymbiotic epibiont, Chelonibia barnacles (Crustacea: Cirripedia: Chelonibiidae) on the blue crab, Portonus segnis from Persian Gulf

Hosseini¹,

Sakhaei²,

Zamani³

2023

Biologia

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Ectoparasites of blue swimming crabs (Portunus pelagicus) from Demak and East Lampung, Java Sea Indonesia

Heirina

Krisanti

Butet

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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Ectoparasites that infest Portunus pelagicus can have negative impacts on host health. This study aims to determine the infection patterns of ectoparasites of P. pelagicus, such as prevalences, intensities, and (mean) abundances in relation to its pathogenic impacts. A total of 93 crabs were sampled from fishermen in Demak and East Lampung from October 2019 to January 2020. Seven ectoparasite species, Chelonibia testudinaria (Crustacea), Dianajonesia tridens (Crustacea), Octolasmis angulata, O. lowei, O. warwicki (Crustacea), Ostrea puelchana (Mollusca) and Thompsonia sp. (Crustacea) were isolated. In Demak the ectoparasite with the highest prevalence was O. angulata of 81% with an intensity of 315. In East Lampung, C. testudinaria had the highest prevalence of 88% but with low intensity of 62. Both parasite species can have health impacts on their host, such as enhanced vulnerability to predators for C. testudinaria or reduced oxygen uptake for O. angulata. A total of 20,540 specimens of Thompsonia sp. were found within the East Lampung samples. This species can have a negative effect on their host’s reproduction system. In the future, this knowledge will support enhanced sustainable use of this commercially important crab species and will increase our understanding of health impacts of ectoparasites on P. pelagicus.

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Infestation and morphological identification of the stalked epizoic barnacle Octolasmis on the blue crab Portunus pelagicus from the Red Sea

Cited by 3 publications

References 23 publications

Comparative population genetics of swimming crab host (Portunus pelagicus) and common symbiotic barnacle (Octolasmis angulata) in Vietnam

Comparative population genetics of swimming crab host (Portunus pelagicus) and common symbiotic barnacle (Octolasmis angulata) in Vietnam

Molecular phylogeny, prevalence and intensity adhesion of ectosymbiotic epibiont, Chelonibia barnacles (Crustacea: Cirripedia: Chelonibiidae) on the blue crab, Portonus segnis from Persian Gulf

Ectoparasites of blue swimming crabs (Portunus pelagicus) from Demak and East Lampung, Java Sea Indonesia

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