Reproductive biology of blue swimming crab, Portunus segnis (Forskal, 1775) in Yumurtalık Cove, Northeastern Mediterranean, Turkey

Türeli̇, Canan; Yeşi̇lyurt, İrem Nur

doi:10.12681/mms.13789

Cited by 11 publications

(8 citation statements)

References 10 publications

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“…In Vietnam, it is distributed in the wild throughout the long coastline and aggregated densely in Kien Giang (south of the Mekong Delta) waters [8,11]. It matures and reproduces continuously in one spawning season [12–14]. Planktonic larvae may be transported long distances, supposedly driven by a combination of factors such as temperature, wind, surface currents and salinity [14–17], and spatial distribution depends on larval stages [15,16,18].…”

Section: Introductionmentioning

confidence: 99%

Genome-wide SNP analyses reveal population structure of Portunus pelagicus along Vietnam coastline

et al. 2019

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The blue swimming crab (Portunus pelagicus Linnaeus, 1758) is one of the commercially exploited crab fishery resources in Vietnam. This is the first study to provide a broad survey of genetic diversity, population structure and migration patterns of P. pelagicus along the Vietnamese coastline. The crab samples were collected from northern, central and southern Vietnam. Here, we used a panel of single nucleotide polymorphisms (SNPs) generated from restriction site-associated DNA sequencing (RADseq). After removing 32 outlier loci, 306 putatively neutral SNPs from 96 individuals were used to assess fine-scale population structure of blue swimming crab. The mean observed heterozygosity (Ho) and expected heterozygosity (He) per locus was 0.196 and 0.223, respectively. Pairwise Fst and hierarchical AMOVA supported significant differentiation of central and northern from southern populations (P<0.01). Population structure analyses revealed that P. pelagicus in the south is a separate fisheries unit from the north and center. Contemporary migration patterns supported high migration between northern and central populations and restricted genetic exchange within the southern population. In contrast, historic gene flow provides strong evidence for single panmictic population. The results are useful for understanding current status of P. pelagicus in the wild under an environment changing due to natural and anthropogenic stresses, with implications for fisheries management.

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Section: Introductionmentioning

confidence: 99%

Genome-wide SNP analyses reveal population structure of Portunus pelagicus along Vietnam coastline

et al. 2019

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“…Male of ornate spiny lobster was found to be more dominant compared to female in Sebatik Island waters. Chi-square (X 2 ) test results on the sex ratio show a significant difference (P>0.05), which means that the ratio between female and male ornate spiny lobster is unbalanced 23 . The growth pattern of ornate spiny lobster was negatively allometric, so carapace length increases faster than ornate spiny lobster weight.…”

Section: Discussionmentioning

confidence: 94%

Carapace length-frequency distribution and carapace length-weight correlation of ornate spiny lobster (Panulirus ornatus) in Sebatik Island Waters – Indonesia

Muzammil

Kurniadi

2021

E3S Web Conf.

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Ornate spiny lobster (Panulirus ornatus) in Sebatik Island is a commercial fisheries commodity that has the highest price if we compare it with another lobster caught by the fisherman in Sebatik Island Waters. That causes the effort to catch this lobster to increase continuously. The availability of biological aspects data of ornate spiny lobster is needed as a basis for sustainable lobster resource management in Sebatik Island. This research aims to analyze the biological performance of ornate spiny lobster in Sebatik Waters, coverage from study carapace length-frequency distribution and carapace length-weight correlation of ornate spiny lobster. This research is expected to provide benefits as basic information in lobster management. Information related to the biological condition of lobsters can be used as a consideration in strategies for the utilization and management of lobster resources. Measurement of carapace length, weight, and sex of ornate spiny lobster was carried out from April to August 2016 at lobster landing base in Sebatik Island, North Borneo, Indonesia. The results showed that the sex ratio shows an unstable ratio. The distribution catch size of ornate spiny lobsters ranged from 64.5–114.5 mmCL. The growth pattern of female and male ornate spiny lobsters was negative allometric with r and R2 values of both female and male >0.95. Carapace length at first ornate spiny lobster catch was 71.28 mmCL.

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“…The species is one of the earliest Lessepsian crustacean invaders [22] recorded in Egyptian and Palestinian waters 30 years after the completion of the Suez Canal [23]. In the following years, it has successfully colonized the Levantine basin from Egypt to Turkey [24]; the Aegean Sea; eastern Sicily and the northern Tyrrhenian Sea [25]; and more recently, Tunisian, Maltese, Libyan, and Cypriot coastal waters [26][27][28][29]. Figure 1 and Table S1 in the Supplementary Materials provide an updated review of the crab's occurrence in invaded Mediterranean areas.…”

Section: Of 17mentioning

confidence: 99%

Isotopic Niche and Trophic Position of the Invasive Portunid Portunus segnis Forskål, (1775) in Elounda Bay (Crete Island, Eastern Mediterranean)

et al. 2022

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There is a growing recognition that an advanced understanding of the trophic characteristics of an invasive consumer can provide important information on its ecological impact. In recent years, the blue swimming crab Portunus segnis, one of the earliest Lessepsian invaders, has considerably expanded its distribution range in the Mediterranean Sea, yet, its trophic habits in invaded areas remain scarcely investigated. In this study, we used carbon and nitrogen stable isotopes analysis (SIA) to determine the trophic position and isotopic niche of the crab compared with other representatives of the flora and fauna occurring in Elounda Bay (Crete). P. segnis showed a trophic position of 3.9, higher than the values determined by SIA or conventional gut content analysis in other areas of the Mediterranean Sea or in the native range. Crab specimens showed a high inter-individual variability in both δ13C and δ15N values; further analysis indicated negligible differences in the isotopic niche of adult males and females. Conversely, δ15N values were significantly related to the size of the specimens, ultimately suggesting an ontogenetic dietary shift. This study represents the first attempt to characterize the trophic habits of the blue swimming crab in the context of an invaded food web and may contribute to the implementation of long-term management strategies of control and mitigation of its ecological impact.

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Reproductive biology of blue swimming crab, Portunus segnis (Forskal, 1775) in Yumurtalık Cove, Northeastern Mediterranean, Turkey

Cited by 11 publications

References 10 publications

Genome-wide SNP analyses reveal population structure of Portunus pelagicus along Vietnam coastline

Genome-wide SNP analyses reveal population structure of Portunus pelagicus along Vietnam coastline

Carapace length-frequency distribution and carapace length-weight correlation of ornate spiny lobster (Panulirus ornatus) in Sebatik Island Waters – Indonesia

Isotopic Niche and Trophic Position of the Invasive Portunid Portunus segnis Forskål, (1775) in Elounda Bay (Crete Island, Eastern Mediterranean)

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