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opencc-by-4.0Aug 2013View details →

Fig. 2 in Saging Cebuana, A New Genus And Species Of Taeniacanthid Copepod (Cyclopoida) Parasitic On A Filefish (Actinopterygii: Monacanthidae) Collected From Cebu Island, The Philippines

Fig. 2. Saging cebuana, new genus, new species, holotype female (ZRC 2013.0516) (A–G) and paratype female (ZRC 2013.0518) (H). A, right maxilla, anterior; B, left maxilliped, anterior; C, left leg 1, anterior; D, right leg 2, anterior; E, right leg 3, anterior; F, left leg 4 with enlarged view of tip of distal exopodal segment, anterior; G, right leg 5 and leg 6, dorsal; H, left egg sac, dorsal. Scale bars = 20 μm (A, B), 30 μm (C), 50 μm (D, E); 40 μm (F, G), 100 μm (H).

opencc-by-4.0Aug 2013View details →

Fig. 3 in Saging Cebuana, A New Genus And Species Of Taeniacanthid Copepod (Cyclopoida) Parasitic On A Filefish (Actinopterygii: Monacanthidae) Collected From Cebu Island, The Philippines

Fig. 3. Saging cebuana, new genus, new species, allotype male (ZRC 2013.0517). A, habitus, dorsal; B, habitus, lateral; C, fifth pediger and genital complex, ventral; D, first and second segments of right antennule, ventral; E, right maxilliped, posterior; F, right leg 1, anterior; G, endopod of left leg 2, anterior; H, endopod of left leg 3, anterior. Scale bars = 100 μm (A, B), 30 μm (C, G, H), 20 μm (D–F).

opencc-by-4.0Aug 2013View details →

Fig. 1 in Saging Cebuana, A New Genus And Species Of Taeniacanthid Copepod (Cyclopoida) Parasitic On A Filefish (Actinopterygii: Monacanthidae) Collected From Cebu Island, The Philippines

Fig. 1. Saging cebuana, new genus, new species, holotype female (ZRC 2013.0516). A, habitus, dorsal; B, habitus, lateral; C, right caudal ramus, dorsal; D, left antennule, ventral; E, right antenna, posterior; F, postantennal area, ventral; G, labrum; H, right mandible, anterior; I, right paragnath; J, right maxillule, anterior. Scale bars = 200 μm (A, B), 20 μm (C, E–H, J), 50 μm (D), 10 μm (I).

FIG. 7. — A, B, Janstockia phallusiella n. gen., n in A new genus of notodelphyid copepod (Crustacea, Copepoda, Cyclopoida) from a compound ascidian host collected in the Suez Canal

FIG. 7. — A, B, Janstockia phallusiella n. gen., n. sp.; A, leg 1; B, leg 2; C, Ophioseides cardiocephalus Hesse, 1864, leg 1. Scale bars: 50 μm.

FIG. 5. — Janstockia phallusiella n. gen., n in A new genus of notodelphyid copepod (Crustacea, Copepoda, Cyclopoida) from a compound ascidian host collected in the Suez Canal

FIG. 5. — Janstockia phallusiella n. gen., n. sp.; A, urosome, ventral view; B, copulatory pore and paired sperm ducts, with blind projections; C, cluster of setae representing incorporated caudal rami, showing setular ornamentation, dorsal view; D, urosome, dorsal view; E, mandibular palp; F, maxillule; G, maxilliped; H, tip of maxilliped. Scale bars: A, D, 200 μm; B, C, F, H, 25 μm; E, G, 50 μm.

FIG. 4. — Janstockia phallusiella n. gen., n in A new genus of notodelphyid copepod (Crustacea, Copepoda, Cyclopoida) from a compound ascidian host collected in the Suez Canal

FIG. 4. — Janstockia phallusiella n. gen., n. sp., scanning electron micrographs; A, mandibular palp, ventral view in situ; B, maxillule, ventral view in situ; C, hirsute lobes of maxillule; D, maxilliped. Scale bars: A-C, 10 μm; D, 20 μm.

FIG. 1. — Janstockia phallusiella n. gen., n in A new genus of notodelphyid copepod (Crustacea, Copepoda, Cyclopoida) from a compound ascidian host collected in the Suez Canal

FIG. 1. — Janstockia phallusiella n. gen., n. sp.; A, habitus of paratype (MNHN-Cp2178), lateral view; B, habitus of holotype (MNHN-Cp2177), ventral view; C, habitus of holotype, dorsal view showing lateral expansions of first pedigerous somite (arrow). Scale bars: A, 1.0 mm; B, C, 0.5 mm.

FIG. 9 in A new genus of notodelphyid copepod (Crustacea, Copepoda, Cyclopoida) from a compound ascidian host collected in the Suez Canal

FIG. 9. — Schematic of leg 2 of Janstockia phallusiella n. gen., n. sp. Abbreviations: ba, basis; en1-3, endopodal segments 1 to 3; ex1-3, exopodal segments 1 to 3; ics, intercoxal sclerite; os, outer basal seta.

FIG. 6. — Janstockia phallusiella n. gen., n in A new genus of notodelphyid copepod (Crustacea, Copepoda, Cyclopoida) from a compound ascidian host collected in the Suez Canal

FIG. 6. — Janstockia phallusiella n. gen., n. sp., scanning electron micrographs; A, leg 1, anteroventral; B, detail of leg 1 exopod; C, rami of leg 2; D, leg 4; E, detail of leg 3 rami; F, detail of leg 4 rami. Scale bars: A, 20 μm; B, C, E, F, 10 μm; D, 50 μm.

FIG. 8 in A new genus of notodelphyid copepod (Crustacea, Copepoda, Cyclopoida) from a compound ascidian host collected in the Suez Canal

FIG. 8. — Ophioseides cardiocephalus Hesse, 1864; A, antennule; B, tip of antennule showing setal elements; C, antenna; D, detail of antennal endopod, showing claw and accessory setae; E, oral appendages in situ. Abbreviations: mn, mandible; mx, maxilla; mxl, maxillule. Scale bars: A, C-E, 50 μm; B, 25 μm.

FIG. 3. — Janstockia phallusiella n. gen., n in A new genus of notodelphyid copepod (Crustacea, Copepoda, Cyclopoida) from a compound ascidian host collected in the Suez Canal

FIG. 3. — Janstockia phallusiella n. gen., n. sp., scanning electron micrographs; A, cephalosome and anterior part of trunk, ventral view; B, rostrum, labrum and oral area, ventral view; C, detail of trunk surface showing integumental ornamentation; D, genital openings, ventral view. Scale bars: A, 200 μm; B, 100 μm; C, 10 mm; D, 50 μm.

Fig. 3 in A new cave-dwelling copepod from northeastern Thailand (Cyclopoida: Cyclopidae)

Fig. 3. Bryocyclops maholarnensis, new species, female. A, rostrum; B, antennule; C, antenna; D, mandible; E, maxillule; F, maxilla; G, maxilliped; H, P5. Scale bars = 100 µm.

Fig. 6 in A new cave-dwelling copepod from northeastern Thailand (Cyclopoida: Cyclopidae)

Fig. 6. Bryocyclops maholarnensis, new species, male. A, P1; B, P2; C, P3; D, P4. Scale bar = 100 µm.

Fig. 5 in A new cave-dwelling copepod from northeastern Thailand (Cyclopoida: Cyclopidae)

Fig. 5. Bryocyclops maholarnensis, new species, male. A, habitus – dorsal view; B, genital somite and urosome – dorsal view; C, genital somite and urosome – ventral view; D, pediger 5, genital somite and urosome – lateral view; E, antennule. Scale bars = 100 µm.

Fig. 4 in A new cave-dwelling copepod from northeastern Thailand (Cyclopoida: Cyclopidae)

Fig. 4. Bryocyclops maholarnensis, new species, female. A, P1; B, P2; C, P3; D, P4. Scale bar = 100 μm.

Fig. 2 in A new cave-dwelling copepod from northeastern Thailand (Cyclopoida: Cyclopidae)

Fig. 2. Bryocyclops maholarnensis, new species, female. A, habitus – dorsal view; B, pediger 5, genital double-somite and urosome – dorsal view; C, pediger 5, genital double-somite and urosome – ventral view; D, pediger 5, genital double-somite and urosome – lateral view. Scale bars = 100 µm.

Fig. 1 in A new cave-dwelling copepod from northeastern Thailand (Cyclopoida: Cyclopidae)

Fig. 1. Sampling localities of Bryocyclops maholarnensis, new species, from northeastern Thailand: black spot (l) = province (in left) and district (in right); black star (ª) = sampling site.

opencc-zeroSep 2021View details →

dryad40/100

Niche conservation in copepods between ocean basins

This dataset provides the necessary data to test for niche conservatism as demonstrated in the article "Niche conservatism in copepods between ocean basins; 10.1111/ecog.05690". Our study examined niche conservatism (i.e. a species' niche remains stable in space and time) between populations of the same species of marine copepod in different ocean basins. We used two approaches to test for niche conservatism which can be defined as a Princpial Component Analysis (PCA) and Environmental Niche Model (ENM) method. Niches may differ by virtue of the fact that the available environmental conditions do not overlap. This can be addressed by first establishing a baseline or a null model that quantifies how far a niche would be expected to differ by chance based on the environmental conditions in both areas. We used six environmental variables to define the environmental niche (sea surface temperature - SST °C, Salinity, mixed layer depth - MLD (m), bathymetric depth (m), chlorophyll-a - chl-a (mg m-3) and wind stress (N m-2). The PCA method uses the first 3 principal components to define the species niche in each population and the available background conditions in each area. If the niche distance between two populations is found to be significantly LESS than the distance in mean background conditions then the niches are judged to be conserved even if they are different. In contrast, if the niche distances are significantly different and MORE than the distance in mean background conditions then the niches are judges to be diverged. The ENM method compares the niches of two populations by using Maximum Entropy modelling (MaxEnt) to first define each popultions distributions across the environmental gradients. The niche overlap between two different populations were quantified using the Schoener's D metric where 0 = no niche overlap to 1 = full niche overlap. To separate the effect of different background conditions on the level of niche overlap (D), a null distribution (H0) was generated for each population by calculating the differences between 100 ENMs generated using the presence data of one population and random background samples from the other population. If H0 < D, the niches overlap greater than would be expected purely by chance and are therefore conserved. In contrast If H0 > D the niches overlap less than would be expected by chance and are therefore diverged. Of the 21 pairwise comparisons between populations of the same species a total of 10 showed evidence of niche divergence. The divergent popaultions belonged to 7 of the 15 marine copepod species with the majority belonging to the genus Pleuromamma. The findings have important implicatons on the use of ecological models in defining the niche of marine copepods as regional populations may respond differently to environmental pressures. Evidence of strong genetic variation has been shown for many of these species with the potential for adaptive evolutionary response to regional pressures at a much faster rate than expected. Given this fact we encourage future studies to incorporate phylogenetic information into niche model analyses for plankton.

opencc-by-4.0Mar 2008View details →

Figure 29 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding

Figure 29. Comparison of dorsal and lateral pore and pit seta patterns, from rear of cephalothorax through genital compound somite, among six species of Maemonstrilla gen. nov. (present study), two of Monstrilla, and one of Cymbasoma. Explanation of symbols: dots (three sizes) = pores; larger circles = pits of pit setae; smaller circles = structures of uncertain type observed by light microscopy (Cymbasoma morii only); arrowheads = spiniform scales (Maemonstrilla turgida only). Maemonstrilla patterns based on SEM and light microscopical examination, frequently representing composites and in some cases probably incomplete. Monstrilla hamatapex Grygier & Ohtsuka, 1995 after Grygier & Ohtsuka (1995: fig. 5B, E); Monstrilla grandis Giesbrecht, 1891 after Huys & Boxshall (1991: fig. 2.5.1A; lateral view, so only right-side structures shown); Cymbasoma morii Sekiguchi, 1982 after Grygier (1994b: fig. 1E).