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158 results for “parasitic copepods”
FIG. 6 in Chondracanthid copepods parasitic on flatfishes of Kerala, India
FIG. 6. Bactrochondria hoi (Pillai). Female: (A) leg 1; (B) leg 2. Male: (C) habitus of adult, lateral; (D) genito-abdomen, ventral; (E) antennule; (F) antenna; (G) mandible; (H) maxillule; (I) maxilla; (J) maxilliped. Scale bars: 0.05 mm in (A); 0.02 mm in (B, D); 0.1 mm in (C); 0.01 mm in (E-J).
FIG. 11 in Chondracanthid copepods parasitic on flatfishes of Kerala, India
FIG. 11. Heterochondria similis (Yü and Wu). Female: (A) habitus of adult, dorsal; (B) genito-abdomen, dorsal; (C) caudal ramus; (D) right side of antennary region, ventral; (E) oral region, ventral; (F) mandible; (G) paragnath; (H) maxilla; (I) maxilliped; (J) terminal part of maxilliped; (K) leg 1; (L) leg 2. Male: (M) habitus of adult, lateral. Scale bars: 1 mm in (A); 0.1 mm in (B-E, K, L); 0.02 mm in (F-H); 0.05 mm in (I, J).
FIG. 4 in Chondracanthid copepods parasitic on flatfishes of Kerala, India
FIG. 4. Bactrochondria papilla gen. et sp. nov. Female: (A) maxilliped; (B) leg 1; (C) leg 2. Male: (D) habitus of adult, lateral; (E) genito-abdomen, ventral; (F) antennule; (G) antenna; (H) mandible; (I) paragnath; (J) maxillule; (K) maxilla; (L) maxilliped, posterior; (M) maxilliped, anterior; (N) leg 1; (O) leg 2. Scale bars: 0.05 mm in (A); 0.1 mm in (B, D); 0.02 mm in (C, E); 0.01 mm in (F-O).
FIG. 9 in Chondracanthid copepods parasitic on flatfishes of Kerala, India
FIG. 9. Heterochondria petila sp. nov. Female: (A) habitus of adult, dorsal; (B) head and neck region, dorsal; (C) same, lateral; (D) genito-abdomen, dorsal; (E) same, ventral; (F) antennule; (G) antenna; (H) labrum. Scale bars: 0.5 mm in (A); 0.2 mm in (B, C); 0.1 mm in (D, E, G); 0.05 mm in (F, H).
FIG. 1 in Chondracanthid copepods parasitic on flatfishes of Kerala, India
FIG. 1. Acanthochondria zebriae sp. nov. Female: (A) habitus of adult, dorsal; (B) head and neck, dorsal; (C) same, lateral; (D) posterior part of trunk, dorsal; (E) same with male, lateral; (F) antennule; (G) antenna; (H) mandible; (I) paragnath; (J) maxillule; (K) maxilla. Scale bars: 0.2 mm in (A); 0.1 mm in (B, C, E); 0.05 mm in (D, F, G); 0.02 mm in (H, I, J, K).
Figure 4 in ERRATUM The gastropod-crustacean connection: towards the phylogeny and evolution of the parasitic copepod family Splanchnotrophida
Figure 4. Phylogeny of Splanchnotrophidae. Strict consensus tree of the main parsimony analysis with bootstrap support (> 50, in parentheses) and Bremer decay values. Geographical distributions are indicated according to major regions. Branch length reflects number of character-state changes.
FIGURE 3 in Using DNA barcoding to identify host-parasite interactions between cryptic species of goby (Coryphopterus: Gobiidae, Perciformes) and parasitic copepods (Pharodes tortugensis: Chondracanthidae, Cyclopoida)
FIGURE 3. Maximum likelihood tree derived from COI sequences of our copepod samples (labeled as P. tortugensis) plus voucher sequences from related copepods in the suborder Ergasilida (see Table 5 for a list). Sequences of copepods confamilial to P. tortugenis (Chondracanthidae) are labelled to species (and shaded blue in the online colour version), and members other taxa are labeled to family (and shaded pink in the colour online version). Support values for bipartitions are indicated, and divergence represented by dark blue scale bar = 3 %.
FIGURE 1 in Using DNA barcoding to identify host-parasite interactions between cryptic species of goby (Coryphopterus: Gobiidae, Perciformes) and parasitic copepods (Pharodes tortugensis: Chondracanthidae, Cyclopoida)
FIGURE 1. Maximum likelihood tree derived from COI sequences of our goby samples plus voucher sequences from all Coryphopterus species except C. punctipectophorus. Voucher sequences are identified by GenBank sequence ID. Sequences from several other goby species are included as outgroups (not all are identified in the figure; see Table 4 for a list). Support values for bipartitions are indicated, and divergence represented by scale bar = 6%.
FIGURE 2 in Using DNA barcoding to identify host-parasite interactions between cryptic species of goby (Coryphopterus: Gobiidae, Perciformes) and parasitic copepods (Pharodes tortugensis: Chondracanthidae, Cyclopoida)
FIGURE 2. Differences in body depth between goby species. A boxplot of body depth (as a % of body length in SL) for the three gobies, with sample sizes in parentheses. For the boxplot: box boundaries represent 25th and 75th percentiles respectively; line inside box indicates the median, lower and upper error lines indicate 10th and 90th percentiles respectively, and circles show data falling outside 10th and 90th percentiles.
Figure 5 in What causes transformation of the parasitic copepod? A new example of host switching in the family Anthessiidae (Cyclopoida) from Singaporean waters, with the proposal of a new genus
Figure 5. Merlionia zeeae, adult male, allotype (ZRC 2023.0306). A, habitus, dorsal. B, cephalosome, dorsal. C, rostral area, ventral. D, fifth pedigerous and genital somites, ventral. E, left antennule, anterior. F, left maxilliped, posterior. Scale bars: A, 400 μm; B, 200 μm; C, 50 μm; D–F, 100 μm.
Figure 6 in What causes transformation of the parasitic copepod? A new example of host switching in the family Anthessiidae (Cyclopoida) from Singaporean waters, with the proposal of a new genus
Figure 6. Fresh coloration of a specimen of Ichthyscopus lebeck (Bloch & Schneider, 1801) infected by the type series of Merlionia zeeae. Scale bar: 30 mm.
Figure 4 in What causes transformation of the parasitic copepod? A new example of host switching in the family Anthessiidae (Cyclopoida) from Singaporean waters, with the proposal of a new genus
Figure 4. Merlionia zeeae, adult female, holotype (ZRC 2023.0305). A, left leg 1, anterior. B, left leg 2, anterior. C, right leg 3, anterior. D, right leg 4, anterior. E, left leg 5, outer. Scale bars: A–E, 100 μm.
Figure 3 in What causes transformation of the parasitic copepod? A new example of host switching in the family Anthessiidae (Cyclopoida) from Singaporean waters, with the proposal of a new genus
Figure 3. Merlionia zeeae, adult female, holotype (ZRC 2023.0305). A, left antennule, anterior. B, same, distal portion, anterior. C, left antenna, anterior. D, same, distal portion, frontal. E, labrum, anterior. F, left mandible, posterior. G, right maxillule, posterior. H, right maxilla, posterior. I, labium, posterior. Scale bars: A, I, 100 μm; B, G, H, 30 μm; C, E, 50 μm; F, H, 40 μm.
Data from: A common-garden experiment to quantify evolutionary processes in copepods: the case of emamectin benzoate resistance in the parasitic sea louse Lepeophtheirus salmonis
Background:The development of pesticide resistance represents a global challenge to food production. Specifically for the Atlantic salmon aquaculture industry, parasitic sea lice and their developing resistance to delousing chemicals is challenging production. In this study, seventeen full sibling families, established from three strains of Lepeophtheirus salmonis displaying differing backgrounds in emamectin benzoate (EB) tolerance were produced and quantitatively compared under a common-garden experimental design. Lice surviving to the preadult stage were then exposed to EB and finally identified through the application of DNA parentage testing. Results: With the exception of two families (19 and 29%), survival from the infectious copepod to preadult stage was very similar among families (40-50%). In contrast, very large differences in survival following EB exposure were observed among the families (7.9-74%). Family survival post EB exposure was consistent with the EB tolerance characteristics of the strains from which they were established and no negative effect on infection success were detected in association with increased EB tolerance. Two of the lice families that displayed reduced sensitivity to EB were established from a commercial farm that had previously used this chemical. This demonstrates that resistant alleles were present on this farm even though the farm had not reported treatment failure. Conclusions: To our knowledge, this represents the first study where families of any multi-cellular parasite have been established and compared in performance under communal rearing conditions in a common-garden experiment. The system performed in a predictable manner and permitted, for the first time, elucidation of quantitative traits among sea lice families. While this experiment concentrated on, and provided a unique insight into EB sensitivity among lice families, the experimental design represents a novel methodology to experimentally address both resistance development and other evolutionary questions in parasitic copepods.
Data from: Tapeworm manipulation of copepod behaviour: parasite genotype has a larger effect than host genotype
Compared to uninfected individuals, infected animals can exhibit altered phenotypes. The changes often appear beneficial to parasites, leading to the notion that modified host phenotypes are extended parasite phenotypes, shaped by parasite genes. However, the phenotype of a parasitized individual may reflect parasitic manipulation, host responses to infection, or both, and disentangling the contribution of parasite genes versus host genes to these altered phenotypes is challenging. Using a tapeworm (Schistocephalus solidus) infecting its copepod first intermediate host, I performed a full-factorial, cross-infection experiment with five host and five parasite genotypes. I found that a behavioural trait modified by infection, copepod activity, was affected by both host and parasite genotype. There was not clear evidence for host genotype by parasite genotype interactions. Several observations indicated that host behaviour was chiefly determined by parasite genes: 1) all infected copepods, regardless of host or parasite genotype, exhibited behavioural changes, 2) parasitism reduced the differences among copepod genotypes, and 3) within infected copepods, parasite genotype had twice as large an effect on behaviour as host genotype. I conclude that the altered behaviour of infected copepods primarily represents an extended parasite phenotype, and I discuss how genetic variation in parasitic host manipulation could be maintained.
Fig. 1 in A New Species of the Enigmatic Copepod Genus Lernaeascus (Cyclopoida: Philichthyidae), Parasitic on Angelfishes (Actinopterygii: Pomacanthidae) from the Ryukyu Islands, Japan
Fig. 1. Lernaeascus kabuto sp. nov., adult male, holotype (NSMT-Cr 24277). A, Habitus, dorsal; B, prosomites 2–5, dorsal; C, right side of genital somite, ventral; D, posterior part of urosome, dorsal; E, frontal region of cephalothorax and right antennule, ventral; F, right antenna, lateral; G, same, posterior. Scale bars: 200 µm for A; 100 µm for B; 50 µm for C; 30 µm for D–G.
Figure 1 from: MacKinnon RB, Landschoff J, Griffiths CL (2016) Rediscovery and first South African records of the parasitic copepod Cancerilla oblonga Bartsch, 1975 (Crustacea, Cancerillidae). African Invertebrates 57(2): 105-109. https://doi.org/10.3897/AfrInvertebr.57.9775
Figure 1 - Amphiura capensis, showing three ovigerous female Cancerilla oblonga atached to ventral surfaces of arms.
Figure 2 from: MacKinnon RB, Landschoff J, Griffiths CL (2016) Rediscovery and first South African records of the parasitic copepod Cancerilla oblonga Bartsch, 1975 (Crustacea, Cancerillidae). African Invertebrates 57(2): 105-109. https://doi.org/10.3897/AfrInvertebr.57.9775
Figure 2 - Left Scanned electron micrograph of ovigerous female Cancerilla oblonga from Amphiura capensis in Cape Town Right External features of Cancerilla oblonga from Luderitz, as drawn by Bartsch (1975).
Figure 9 from: Uyeno D, Nagasawa K (2012) Four new species of splanchnotrophid copepods (Poecilostomatoida) parasitic on doridacean nudibranchs (Gastropoda, Opistobranchia) from Japan, with proposition of one new genus. ZooKeys 247: 1-29. https://doi.org/10.3897/zookeys.247.3698
Figure 9 - Splanchnotrophus imagawai sp. n., female, holotype NSMT–Cr 22249. A anterior portion of cephalosome B antennule, ventral C oral area D mandible, posterior E maxilla F leg 1 G leg 2 H leg 3. Scale bars = 100 μm in A; 50 μm in B, C; 10 μm in D, H; 20 μm in E, F, G.
Figure 8 from: Uyeno D, Nagasawa K (2012) Four new species of splanchnotrophid copepods (Poecilostomatoida) parasitic on doridacean nudibranchs (Gastropoda, Opistobranchia) from Japan, with proposition of one new genus. ZooKeys 247: 1-29. https://doi.org/10.3897/zookeys.247.3698
Figure 8 - Splanchnotrophus imagawai sp. n., female, holotype NSMT–Cr 22249. A habitus, dorsal B habitus, ventral, p1 = leg 1, p2 = leg 2 C posterior portion of body, ventral, p3 = leg 3 D fourth pedigerous somite and genito-abdomen, ventral E caudal ramus, ventral F egg sac. Scale bars = 1 mm in A; 500 μm in B, F; 200 μm in C; 100 μm in D; 20 μm in E.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.