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79 results for “subtidal”
Fig. 15. A–B in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 15. A–B: Palicoides whitei (Miers), ♂(NSMT-Cr 31000; cb 7.0×cl 4.7 mm). Left orbital region, with third maxilliped, in ventral view (A) and right G1 in sternal view (B). Arrow in Fig. A shows a curved tubercle extending from the eyestalk to guard the cornea. C–E: Neopalicus jukesii (White), ♂ (NSMT-Cr 30997; cb 8.2×cl 7.3 mm). Left third maxilliped (C), G1 in ventral view (D) and distal part of the same in sternal view (E). F–G: Trierarchus squamosus (Stephenson and Hudson, 1957), ♂ (NSMT-Cr 30977; cb 12.6×cl 8.7 mm). Left third maxilliped (F) and left G1 in sternal view. (G). Scales for AC=1 mm, BEFG=2 mm, D=0.5 mm.
Fig. 14. A–B in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 14. A–B: Palicoides whitei (Miers), ♂ (NSMT-Cr 31000; cb 7.0×cl 4.7 mm) in dorsal (A) and ventral (B) views. C–F: Neopalicus jukesii (White), ♂ (NSMT-Cr 30997; cb 8.2×cl 7.3 mm) (C–E), and ovig.♀ (NSMT-Cr 30998; 8.7×7.6 mm). Carapaces in dorsal view (C, F), abdomen (D) and G1 in situ (E).
Fig. 12. A–C in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 12. A–C: Typhlocarcinops decrescens Rathbun, ♀ (NSMT-Cr 30993; cb 8.6×cl 5.8 mm) in different views. D–G: Microtopsis teschi Ng and Castro, ♂ (NSMT-Cr 30995; cb 3.5×cl 2.9 mm) (D–E), and ♀ (NSMT-Cr 30996; 4.0×3.1 mm) (F–G).
Fig. 11. A–B in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 11. A–B: Tetralia nigrolineata Serène and Pham, 1957, ♂ (NSMT-Cr 30988; cb 5.1×cl 4.1 mm) (A) and ovig.♀ (NSMT-Cr 30988; 5.8×4.9 mm) (B). C–E: Notonyx aff. sagittifer Ng and Clark, 2010, ♂(NSMT-Cr 30991; cb 5.0×cl 3.3 mm), carapace in dorsal view (C), both chela in outer view (D) and both chelipeds in dorsal view (E).
Fig. 10. A in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 10. A: Trierarchus squamosus (Stephenson and Hudson, 1957), ♂ (NSMT-Cr 30977; cb 12.6×cl 8.7 mm). Front-orbital region in dorsal view. B–C: Chlorodiella xishaensis Chen and Lan, ♂ (NSMT-Cr 30983; cb 8.0×cl 5.7 mm). Left G1 in ventral view (B) and right third ambulatory leg in dorsal view (C). D–F: Chlorodiella corallicola Miyake and Takeda, ♂ (holotype, ZLKU 1724; cb 6.6×cl 4.4 mm). Distal part of right G1 in ventral (D) and sternal (E) views (original figures by Miyake and Takeda, 1968). Scales for A=5 mm, B= 0.5 mm, C=3 mm, F=0.5 mm.
Fig. 8 in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 8. Trierarchus squamosus (Stehenson and Hudson 1957), ♂ (NSMT-Cr 30977; cb 12.6×cl 8.7 mm). Carapace in dorsal view (A), abdomen (B), both chelipeds in outer (C) and upper (D) views.
Fig. 9. A in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 9. A: Gaillardiellus rueppellii (Krauss), ♂ (NSMT-Cr 30985; cb 8.8×cl 6.6 mm). B: Metaxanthops acutus Serène, ♂ (NSMT-Cr 30987; cb 6.8×cl 5.5 mm). C: Lophoplax sextuberculata Takeda and Kurata, ovig.♀ (NSMT-Cr 30992; cb 5.2×cl 4.0 mm). D: Vellumnus pygmaeus (Takeda), ♂ (NSMT-Cr 30994; cb 5.7×cl 4.5 mm). E: Chlorodiella corallicola Miyake and Takeda, ovig.♀ (NSMT-Cr 30980; cb 4.8×cl 3.2 mm). F: Chlorodiella xishaensis Chen and Lan, ♂ (NSMT-Cr 30983; cb 8.0×cl 5.7 mm).
Fig. 6 in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 6. Pseudolambrus palauensis sp. nov., ♂ (NSMT-Cr 30966; cb 9.7×cl 9.5 mm), holotype. Carapace in dorsal view (A), right orbital region enlarged in dorsal view (B), left third maxilliped (C) and left G1 in ventral view (D). Scales for A=1 mm, C=2 mm, D=1 mm.
Fig. 7. A–B in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 7. A–B: Thalamita quadrilobata Miers, ♀ (NSMT-Cr 30974; cb 10.8×cl 7.4 mm). C–D: Thalamonyx gracilipes A. Milne-Edwards, ♂(NSMT-Cr 30976; cb 7.6×cl 5.9 mm). E–F: Thalamita chaptalii (Audouin), ♂ (NSMT-Cr 30970; cb 12.6×cl 8.2 mm) (E); ♂ (NSMT-Cr 30971; cb 8.6×cl 6.0 mm) (F). G: Xiphonectes longispinosus (Dana) sensu Sakai (1939), ♂ (NSMT-Cr 30978; cb 17.6 mm including epibranchial tubercles×cl 7.1 mm). H: Thalamita sexlobata Miers, ovig.♀ (NSMT-Cr 30975; cb 9.0×cl 6.3 mm).
Fig. 5 in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 5. Pseudolambrus palauensis sp. nov., ♂ (NSMT-Cr 30966; cb 9.7×cl 9.5 mm), holotype. Carapace in different views (A–D).
Fig. 3. A–C in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 3. A–C: Rhinolambrus turriger (White), ♂ (NSMT-Cr 30964; cb 11.4×cl 11.3 mm including front and excluding posterior tubercles). Overall appearance, with original label (A) and carapace in doral (B) and frontal (C) views. D–E: Lambrachaeus ramifer Alcock, ♂(NSMT-Cr 30963; cb 4.8×pcl 8.0 mm). Dorsal view, with detached chelipeds and ambulatory legs (D) and carapace in lateral view (E).
Fig. 2 in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 2. Thusaenys calvarius (Alcock), ♂ (NSMT-Cr 30959; cb 6.7×pcl 10.5 mm excluding posterior tubercle), Right orbital region in dorsal view (A), left orbital region in ventral view, showing the basal antennal segment (B), right orbital region in lateral view (C), left third maxilliped (D), and left G1 in ventral (E) and sternal (F) views. Scales for AD=1 mm, BC=2 mm, E=1 mm, F=0.5 mm.
Fig. 1. A–C in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 1. A–C: Thusaenys calvarius (Alcock), ♂ (NSMT-Cr 30959; cb 6.7×pcl 10.5 mm excluding posterior tubercle). D: Naxioides hirta A. Milne-Edwards, ♂ (NSMT-Cr 30958; cb 17.0 mm excluding branchial spines× pcl 25.2 mm including posterior tubercle). E: Hyastenus sebae White, ♀ (NSMT-Cr 30957; cb 10.5×pcl 13.8 mm).
Fig. 4 in A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging
Fig. 4. Pseudolambrus palauensis sp. nov., ♂ (NSMT-Cr 30966; cb 9.7×cl 9.5 mm), holotype. Both chelipeds in ventral view (A) and carapace and both chelipeds in dorsal view (B).
Fig. 1 in Ontogenetic Shifts In Carapace Patterning And/Or Colouration In Intertidal And Subtidal Brachyuran Crabs
Fig. 1. Taxonomic tree showing spread among superfamilies, families and sub-families among the species found to exhibit different carapace patterns between adults and juveniles. Species from Palma et al. (2003) are marked with an asterisk (*). Taxonomy and nomenclature follows Ng et al. (2008).
Figure 4. Thysanozoon brocchii a in Taxonomy of subtidal marine Polyclads from Tabarka (northwest Tunisia) with remarks on their habitat preferences
Figure 4. Thysanozoon brocchii a Dorsal view. Scale bar = 1mm. b Anterior dorsal region showing marginal tentacular eyes te. Scale bar=200µ. c Ventral view in fixed specimen showing the mouth m, the two male gonopores mg, the female gonopre fg and the developed sucker s. Scale bar = 100µ. d Section through the elongated seminal vesicle sv. Scale bar = 100µ. e Section through ovary ov. Scale bar =100µ.
Figure 2. Echinoplana celerrima. a in Taxonomy of subtidal marine Polyclads from Tabarka (northwest Tunisia) with remarks on their habitat preferences
Figure 2. Echinoplana celerrima. a Dorsal view. Scale bar = 1mm. b Cerebral ce and tentacular eyes te. Scale bar = 1mm. c Section through comb-shaped corrugated surface cs. Scale bar = 1mm. d Section through cirrus sac cs showing cirrus provided with sclerotized spines arrows. Scale bar = 1mm. Cirrus lumen cl e details of sclerotized spines arrows. Scale bar = 1mm. f Follicular testis showing differents germ cells. Scale bar = 10µ. g Section through uterus filled with eggs arrows. Scale bar = 10µ.
Figure 3. Prosthiostomum siphunculus a in Taxonomy of subtidal marine Polyclads from Tabarka (northwest Tunisia) with remarks on their habitat preferences
Figure 3. Prosthiostomum siphunculus a Dorsal view. Scale bar = 1mm. b Anterior region showing the arrangement of eyes. Note the presence of marginal eyes me and two clusters of cerebral eyes ce. Scale bar =10µ. c Ventral view of anterior region showing the paired prostatic vesicles pv. Prostatic canal pc. Scale bar =10µ. d Ventral view of anterior region showing the prominent stylet st. male gonopore mg, prostatic canal pc. Scale bar = 10µ. e section through male apparatus. Prostatic vesicle pv, male atrium ma, male gonopore mg, stylet st, median intestine mi. Scale bar = 10µ. f Section through female genital apparatus, note the presence of cement pouch cp in the vagina. female gonopre fg, main intestine mi. Scale bar =10µ.
Data from: Environmental and local habitat variables as predictors of trophic interactions in subtidal rocky reefs along the SE Pacific coast
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Data from: Divergent transcriptional patterns are related to differences in hypoxia tolerance between the intertidal and the subtidal sculpins
Transcriptionally mediated phenotypic plasticity as a mechanism of modifying traits in response to an environmental challenge remains an important area of study. We compared the transcriptional responses to low-oxygen (hypoxia) of the hypoxia tolerant intertidal fish, the tidepool sculpin (Oligocottus maculosus) with the closely related hypoxia intolerant subtidal fish, the silverspotted sculpin (Blepsias cirrhosus) to determine if these species use different mechanisms to cope with hypoxia. Individuals from each species were exposed to environmental O2 tensions chosen to yield a similar level of tissue hypoxia and gene transcription was assessed in the liver over time. There was an effect of time in hypoxia, where the greatest transcriptional change in the silverspotted sculpin occurred between 3 to 24 hours in contrast to the tidepool sculpin where the largest transcriptional change occurred between 24 and 72 hours of hypoxia. A number of genes showed similar hypoxia-induced transcription patterns in both species (e.g. genes associated with glycolysis and apoptosis) suggesting they are involved in a conserved hypoxia response. A large set of genes showed divergent transcriptional patterns in the two species, including fatty acid oxidation and oxidative phosphorylation, suggesting that these biological processes may contribute to explaining variation in hypoxia tolerance in these species. When both species were exposed to a single environmental O2 tension, large transcriptional responses were seen in the hypoxia intolerant silverspotted sculpin while almost no response was observed in the hypoxia tolerant tidepool sculpin. Overall, divergent transcription patterns in response to both magnitude and duration of hypoxia provide insights into the processes that may determine an animal's capacity to tolerate frequent bouts of hypoxia in the wild.
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Allen Brain Atlas
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