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Figure 3 in Observations of a rapid decline in invasive macroalgal cover linked to green turtle grazing in a Hawaiian marine reserve

Figure 3. Mean hourly temperatures (°C) (a.), total rainfall (mm h-1) (b.), wind (km h−1) (c.), and PAR (µmol photons m−2) (d.) in 2015 (red triangle), 2016 (blue square), and 2017 (black circle). Data was obtained from Hawai'i Institute of Marine Biology Weather Station (http://www.pacioos.hawaii.edu/weather/obs-mokuoloe/).

Figure 1 in Observations of a rapid decline in invasive macroalgal cover linked to green turtle grazing in a Hawaiian marine reserve

Figure 1. Green turtle, Chelonia mydas, feeding on Gracilaria salicornia in the back lagoon of Moku o Lo'e, Kāneʻohe Bay, Oʻahu, Hawaiʻi in March 2017. Photo by KD Bahr.

Figure 2. Surveyed sites around Moku o in Observations of a rapid decline in invasive macroalgal cover linked to green turtle grazing in a Hawaiian marine reserve

Figure 2. Surveyed sites around Moku o Loʻe, Kāneʻohe Bay, Oʻahu, Hawaiʻi in April (left) and May (right) depicting proportion of substratum classified as coral (brown), rubble (grey), sand (yellow), or Gracilaria salicornia (green). Numbers within pie charts indicate number of turtles observed at each site during the survey. Red outlined pie charts denote areas with limited accessability (only during high tides) to Chelonia mydas.

Figure 5 in Observations of a rapid decline in invasive macroalgal cover linked to green turtle grazing in a Hawaiian marine reserve

Figure 5. Back lagoon of Moku o Loʻe, Kāneʻohe Bay, Oʻahu, Hawaiʻi adjacent to a fenced enclosure on 13 April 2017 (top) and same area 21 days later on 4 May 2017 (bottom). Photo by KD Bahr.

Fig. 7 in Phylogeny, palaeoecology, and invasion of non-marine waters by the late Miocene hemicytherid ostracod Tyrrhenocythere from Lake Pannon

Fig. 7. Length (l) and height (h) ratio of early Tyrrhenocythere species from Pezinok (Danube Basin). The male valves are longer than the female ones.

Fig. 6 in Phylogeny, palaeoecology, and invasion of non-marine waters by the late Miocene hemicytherid ostracod Tyrrhenocythere from Lake Pannon

Fig. 6. Marginal pore canals on anterior margin and their transformation from straight Hemicytheria arrangement to brush−like Tyrrhenocythere one. A. Hemicytheria reniformis (Reuss, 1850), Hemicytheria folliculosa (Reuss, 1850), Hemicytheria omphalodes (Reuss, 1850), original by author. B. Hemicytheria biornata (Zalányi, 1944), original by author, Hemicytheria maeotica Olteanu 1989 after Olteanu and Vekua (1989). C. Hemicytheria major Sokač, 1972. D. Hemicytheria marginata Sokač, 1972 after Sokać (1972). E. Tyrrhenocythere transitivum sp. nov. F. Tyrrhenocythere pezinokensis (Jiříček, 1985). G. Tyrrhenocythere rastislavi sp. nov. original by author.

Fig. 2 in Phylogeny, palaeoecology, and invasion of non-marine waters by the late Miocene hemicytherid ostracod Tyrrhenocythere from Lake Pannon

Fig. 2. Geographical sketch (A) and lithological column (B) of Pezinok clay pit (Pipík 1998). C. Detail of the sequence with Tyrrhenocythere mirror swamps and shallow water sedimentation on the bord of freshwater−/miohaline lake (Baráth et al. 1999).

Fig. 5. Late Miocene hemicytherid ostracods from the layer 36 in Phylogeny, palaeoecology, and invasion of non-marine waters by the late Miocene hemicytherid ostracod Tyrrhenocythere from Lake Pannon

Fig. 5. Late Miocene hemicytherid ostracods from the layer 36+37A in Pezinok, Slovakia. A–C, I, L. Tyrrhenocythere transitivum sp. nov. A. RV♂, paratype, SNM RP27−21, external lateral view. B. LV♂, paratype, SNM RP27−18, external lateral view. C. LV♀, paratype, SNM RP26−4−4, external lateral view. I. LV♀, paratype, SNM RP27−19, internal lateral view; I1, central muscle scars; I2, detail of hinge. L. RV♀, paratype, SNM RP27−22, internal lateral view, detail of hinge. D. Tyrrhenocythere sp. 1, RV, SNM RP27−2, external lateral view; D1, SEM photo; D2, valve in transparent light. F. Tyrrhenocythere sp. 2, RV♀, SNM RP28−2, external lateral view. G, J. Tyrrhenocythere pezinokensis (Jiříček, 1985). G. LV♀, SNM RP27−8, internal lateral view, G1, central muscle scars; G2, detail of hinge. J. RV♀, paratype, SNM RP27−5, internal lateral view, detail of hinge. E, H, K. Tyrrhenocythere rastislavi sp. nov. E. RV♂, paratype, SNM RP26−16−1, external lateral view. H. RV♀, paratype, SNM RP27−15, internal lateral view; H1, central muscle scars; H2, detail of hinge. K. LV♀, paratype, SNM RP27−12, internal lateral view, detail of hinge.

Fig. 8 in Phylogeny, palaeoecology, and invasion of non-marine waters by the late Miocene hemicytherid ostracod Tyrrhenocythere from Lake Pannon

Fig. 8. Change of salinity tolerance in the course of phylogeny from fully marine/brackish Aurila through brackish Hemicytheria to brackish/freshwater Tyrrhenocythere; black, fully marine; grey, brackish; white, freshwater/oligohaline.

Fig. 1. A in Phylogeny, palaeoecology, and invasion of non-marine waters by the late Miocene hemicytherid ostracod Tyrrhenocythere from Lake Pannon

Fig. 1. A. Palaeogeographical map of Europe in the upper Miocene (9.5 Ma) (after Steininger and Rögl 1985). B. Lake Pannon in a time of maximum flooding surface in Pannonian zone E (Spiniferites paradoxus Biochron) (after Kováč 2000).

opencc-by-4.0Dec 2022View details →

Fig. 2 in Native species Maxvachonia chabaudi Mawson, 1972 (Nematoda: Cosmocercoidea) found in the invasive marine toad Rhinella marina (Linnaeus) (Anura: Bufonidae) in Australia

Fig. 2. Scanning electron micrographs of Maxvachonia chabaudi Mawson, 1972 from the marine toad Rhinella marina (Linnaeus) (Anura: Bufonidae) in Australia, male. A – anterior part of body (lateral ala arrowed), lateral view; B – cephalic end (amphid arrowed), apical view; C, G – posterior end of different individuals (white arrows showing precloacal papillae, black arrow showing lateral ala), lateral view; D – magnified image of precloacal papilla; E – magnified image of postcloacal papilla; F – magnified image of cloacal region (white arrow showing precloacal medio-ventral papilla, black arrows showing paracloacal papillae); H – tail (white arrows showing postcloacal papillae, black arrow showing phasmid), lateral view; I – magnified image of phasmid. Abbreviations: d – dorsal lip; g – tip of gubernaculum; i – inner flange of lips; v – ventrolateral lip.

opencc-by-4.0Dec 2022View details →

Fig. 3 in Native species Maxvachonia chabaudi Mawson, 1972 (Nematoda: Cosmocercoidea) found in the invasive marine toad Rhinella marina (Linnaeus) (Anura: Bufonidae) in Australia

Fig. 3. Scanning electron micrographs of Maxvachonia chabaudi Mawson, 1972 from the marine toad Rhinella marina (Linnaeus) (Anura: Bufonidae) in Australia, female. A – anterior part of body (excretory pore and vulva arrowed), ventral view; B – magnified im- age of excretory pore; C – magnified image of vulva; D – cephalic end (amphids arrowed), apical view; E – egg (small nipple arrowed); F – tail, lateral view; G – magnified image of tail tip. Abbreviations: d – dorsal lip; v – ventrolateral lip.

opencc-by-4.0Sep 2023View details →

Structural and functional effects of global invasion pressure on benthic marine communities – patterns, challenges and priorities

Here we present datasets underlying the results of the study examining patterns of structural and functional community-level change in a range of well-studied marine ecosystems with documented histories of bioinvasion. For the purpose of the study, the authors identified six regions with extensive bay-scale datasets on native and non-indigenous benthic species assemblages, allowing paired comparisons in time (years to decades; retrospective datasets) or space (high vs. low proximity to hotspots of NIS introductions within a region; cross-sectional datasets) representing differences in bioinvasion pressure (Table 1). These sites were: 1) coastal waters of British Columbia, Canada (BC); 2) San Francisco Bay, USA (SF); 3) Ilha Grande Bay, Brazil (BR); 4) North-Eastern Baltic Sea, Estonia (BS); 5) estuaries of New South Wales, Australia (AU) and 6) Waitematā Harbour, New Zealand (NZ). These six regions are generally at mid- to higher-latitudes, with one low-latitude site (BR). The study sites encompassed surveys of benthic communities: fouling assemblages (BC and AU), subtidal reefs (BR and BS), and soft-sediment benthos (SF, BS, and NZ). Three data files are provided for each study region and include: <ul> <li>benthic community data (XX_species.csv)</li> <li>binary (0/1) biological trait information compiled for all species in the dataset (XX_traits.csv)</li> <li>additional explanatory variables considered for each study region - bioinvasion pressure and spatial variables (XX_env.csv)</li> </ul> For detailed information on datasets and methods description please refer to the original manuscript by Zaiko et al.

opencc-zeroNov 2020View details →

Pre-introduction introgression contributes to parallel differentiation and contrasting hybridisation outcomes between invasive and native marine mussels

Non-native species experience novel selection pressures in introduced environments and may interbreed with native lineages. Species introductions therefore provide opportunities to investigate repeated patterns of adaptation and introgression across replicated contact zones. Here, we investigate genetic parallelism between multiple introduced populations of the invasive marine mussel, Mytilus galloprovincialis, in the absence (South Africa and California) and presence of hybridisation with a native congener (Mytilus planulatus in Batemans Bay and Sydney Harbour, Australia). Repeatability in post-introduction differentiation from native-range populations varied between genetically distinct Atlantic and Mediterranean lineages, with Atlantic-derived introductions displaying high differentiation (maxFST>0.4) and parallelism at outlier loci. Identification of long non-coding RNA transcripts (lncRNA) additionally allowed us to clarify that parallel responses are largely limited to protein-coding loci, with lncRNAs likely evolving under evolutionary constraints. Comparisons of independent hybrid zones revealed differential introgression most strongly in Batemans Bay, with an excess of M. galloprovincialis ancestry and resistance to introgression at loci differentiating parental lineages (M. planulatus and Atlantic M. galloprovincialis). Additionally, contigs putatively introgressed with divergent alleles from a closely related species, Mytilus edulis, showed stronger introgression asymmetries compared to genome-wide trends and also diverged in parallel in both Atlantic-derived introductions. These results suggest that divergent demographic histories experienced by introduced lineages, including pre-introduction introgression, influences contemporary admixture dynamics. Our findings build on previous investigations reporting contributions of historical introgression to intrinsic reproductive architectures shared between marine lineages and illustrate that interspecific introgression history can shape differentiation between colonising populations and their hybridisation with native congeners.

opencc-zeroNov 2023View details →

Data from: Hybridization and adaptive introgression in a marine invasive species in native habitats

Hybridization of distinct populations or species is an important evolutionary driving force. For invasive species, hybridization can enhance their competitive advantage in the non-native range as a source of adaptive novelty by introgression of selectively favoured alleles. We use single-nucleotide polymorphism arrays (SNP-chips) to assess genetic diversity and population structure in the invasive ctenophore Mnemiopsis leidyi in native habitats along the USA east coast. Hybrids are present at the distribution border of the two lineages. However, our data suggests selection against hybrids in stable habitats, while hybrids are selected for in fluctuating environments. Hybrid populations thriving in extreme and unstable environments of the native range, such as the Chesapeake Bay, could accelerate the invasion success if translocated. For M. leidyi, this is especially relevant as low salinity currently limits its invasion range in western Eurasia. Hybridization status is thus important but currently disregarded to determine high-risk areas for ballast water exchange.

opencc-zeroDec 2016View details →

Data from: Selection for life-history traits to maximize population growth in an invasive marine species

Species establishing outside their natural range, negatively impacting local ecosystems, are of increasing global concern. They often display life-history features characteristic for r-selected populations with fast growth and high reproduction rates to achieve positive population growth rates (r) in invaded habitats. Here, we demonstrate substantially earlier maturation at a 2 orders of magnitude lower body mass at first reproduction in invasive compared to native populations of the comb jelly Mnemiopsis leidyi. Empirical results are corroborated by a theoretical model for competing life-history traits that predicts maturation at the smallest possible size to optimize r, while individual lifetime reproductive success (R0), optimized in native populations, is near constant over a large range of intermediate maturation sizes. We suggest that high variability in reproductive tactics in native populations is an underappreciated determinant of invasiveness, acting as substrate upon which selection can act during the invasion process.

publicMay 2020View details →

Data from: Comparisons of Late Ordovician ecosystem dynamics before and after the Richmondian Invasion reveal consequences of invasive species in benthic marine paleocommunities

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publicMay 2020View details →

Data from: Climate change and pathways of vessel traffic create marine protected area networks of invasion

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publicNov 2023View details →

Data from: Hybridization and adaptive introgression in a marine invasive species in native habitats

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