Quick filters:
Branchiostoma Stock Photos and Images
RF2TD1C8D–Lancelet (Branchiostoma lanceolatum or Amphioxus lanceolatus) is a filter marine prochordata. Cephalic region in microscopic vision.
RMFB657R–A lancelet, Branchiostoma lanceolatum, a.k.a. Amphioxus. Preserved specimen stained to reveal important structures.
RMB5T7FG–Lancelet or amphioxus Branchiostoma lanceolatum is a marine cephalochordate that lives buried in sea beds - here shell gravel.
RF2TC8N57–European lancelet (Branchiostoma lanceolatum) longitudinal section showing notochord, brain, mouth and mimosa. Light microscope X50 at 10 cm wide.
RM2M97M0G–Planer's Lamprey (Petromyzon planeri), Mud Lamprey (Lampetra fluviatilis or Petromyzon branchialis, also known as European River Lamprey, Blind Lamprey and Pride), Borer (Gastrobranchus coecus, also known as Myxine, Hagfish, Ramper Eel and Poison Ramper), and Lancelet (Branchiostoma lanceolatum or amphioxus).
RM2WXDFJ8–Atlantic hagfish, Myxine glutinosa 1, and European lancelet, Branchiostoma lanceolatum 2. Hand-coloured steel engraving by William Lizars after an illustration by James Stewart from Sir William Jardine's The Naturalist's Library, Ichthyology, British Fishes, W.H. Lizars, Edinburgh, 1843.
RFMTA3MX–Marine creatures. Branchiostoma lanceolatum. Vintage engraved illustration. Published in magazine in 1900.
RM2A2M3RP–Branchiostoma lanceolatum, Print, Branchiostoma lanceolatum (European lancelet, or Mediterranean amphioxus) is a lancelet in the subphylum Cephalochordata. It is a marine invertebrate with a notochord but no backbone and is used as a model organism to study the evolutionary development of vertebrates., 1879
RM2RJX0CP–Bildnummer: 52098924 Datum: 05.09.2007 Copyright: imago/Xinhua Lanzettfischchen (Branchiostoma belcheri) werden in einem Labor in Xiamen in der chinesischen Provinz Fujian gezüchtet - PUBLICATIONxNOTxINxCHN , Tiere; 2007, Fisch, Fische, Lanzettfischchen, Züchtung; , quer, Kbdig, Gruppenbild, China, , Biologie, Wissenschaft,
RM2AX45XB–Fishes . ets, Branchiostoma californiense. Fromthe Bahamas comes the smallest, the type of a distinct genus,Asymmetron liicayaniim, distinguished among other things bya projecting tail. Other supposed genera are Amphioxides{pelagicus), dredged in the deep sea off Hawaii and supposedto be pelagic, the mouth without cirri; Epigonichthys {ciiltellus),from the East Indies, and Hctcropleiiron {bassanum), from BassStraits, Australia. These little animals are of great interestto anatomists as giving the clue to the primitive structure ofvertebrates. While possibly these have diverged widely from The
RMG16EEH–Ascidiacea (commonly known as the ascidians or sea squirts) is a class in the Tunicata subphylum of sac-like marine invertebrate filter feeders. Sea squirts are sessile animals: they remain firmly attached to substratum, such as rocks and shells. There ar
RM2A2M3RN–Branchiostoma lanceolatum, Print, Branchiostoma lanceolatum (European lancelet, or Mediterranean amphioxus) is a lancelet in the subphylum Cephalochordata. It is a marine invertebrate with a notochord but no backbone and is used as a model organism to study the evolutionary development of vertebrates., 1700-1880
RM2RJX0BC–Bildnummer: 52098762 Datum: 05.09.2007 Copyright: imago/Xinhua Biologen züchten Lanzettfischchen (Branchiostoma belcheri) im Fisherie Research Institute in Xiamen in der chinesischen Provinz Fujian - PUBLICATIONxNOTxINxCHN , Personen; 2007, Biologe, Züchtung, Lanzettfischchen; , quer, Kbdig, Gruppenbild, China, Arbeitswelten, Gesellschaft, , Biologie, Wissenschaft, Wasser, Oekologie,
![. On the anatomy of vertebrates [electronic resource] . -fibres of the sympathetic system are someof a grey colour, sometimes called i soft fibres, which are flattened, homogeneous, more minute than theprimitive fibres of the cerebro-spinalsystem, and characterised by smallmultinucleate bodies upon their sur-face, fig. 168. § 52. Myelenceplialon of Fishes.—Inthe cold-blooded Vertebrates the pro-portion of the mass-form, or centres, tothe thread-form, or conductors, of thenervous system is less than in thewarm-blooded classes. In the Lancelet (Branchiostoma),fig. 169, the neural axis, m d, show Stock Photo](https://c8.alamy.com/comp/2CNEYWT/on-the-anatomy-of-vertebrates-electronic-resource-fibres-of-the-sympathetic-system-are-someof-a-grey-colour-sometimes-called-i-soft-fibres-which-are-flattened-homogeneous-more-minute-than-theprimitive-fibres-of-the-cerebro-spinalsystem-and-characterised-by-smallmultinucleate-bodies-upon-their-sur-face-fig-168-52-myelenceplialon-of-fishesinthe-cold-blooded-vertebrates-the-pro-portion-of-the-mass-form-or-centres-tothe-thread-form-or-conductors-of-thenervous-system-is-less-than-in-thewarm-blooded-classes-in-the-lancelet-branchiostomafig-169-the-neural-axis-m-d-show-2CNEYWT.jpg ". On the anatomy of vertebrates [electronic resource] . -fibres of the sympathetic system are someof a grey colour, sometimes called i soft fibres, which are flattened, homogeneous, more minute than theprimitive fibres of the cerebro-spinalsystem, and characterised by smallmultinucleate bodies upon their sur-face, fig. 168. § 52. Myelenceplialon of Fishes.—Inthe cold-blooded Vertebrates the pro-portion of the mass-form, or centres, tothe thread-form, or conductors, of thenervous system is less than in thewarm-blooded classes. In the Lancelet (Branchiostoma),fig. 169, the neural axis, m d, show Stock Photo")
RM2CNEYWT–. On the anatomy of vertebrates [electronic resource] . -fibres of the sympathetic system are someof a grey colour, sometimes called i soft fibres, which are flattened, homogeneous, more minute than theprimitive fibres of the cerebro-spinalsystem, and characterised by smallmultinucleate bodies upon their sur-face, fig. 168. § 52. Myelenceplialon of Fishes.—Inthe cold-blooded Vertebrates the pro-portion of the mass-form, or centres, tothe thread-form, or conductors, of thenervous system is less than in thewarm-blooded classes. In the Lancelet (Branchiostoma),fig. 169, the neural axis, m d, show
RMG16EEJ–Ascidiacea (commonly known as the ascidians or sea squirts) is a class in the Tunicata subphylum of sac-like marine invertebrate filter feeders. Sea squirts are sessile animals: they remain firmly attached to substratum, such as rocks and shells. There ar
RMMA9XYA–. Ecological animal geography; an authorized, rewritten edition based on Tiergeographie auf ockologischer grundlage . Fig. 26.—Amphioxus, Branchiostoma lanceolatum, burrowed into the sand. Slightly enlarged. Fig. 27.—Natica josephina attacking a bi- valve in sand, holding its prey with the di- visions of its foot while boring through the shell. After Schiemenz. Fig. 27 eyes are only slightly movable, with their fields of vision overlapping only a little (10-30°), the eyes of the flatfishes and of other bottom dwellers are very mobile and their fields of view overlap to the extent of 35-80°, ac
RMT02FW0–Ecological animal geography; an authorized, rewritten edition based on Tiergeographie auf ockologischer grundlage . ecologicalanimal00hess Year: 1937 Fig. 25.—Haploops tubicola. Enlarged five times. After Delia Valle. Some fishes also hide themselves by burying wholly or partly in the sand, and thus lie in wait for their prey. All these have a flattened, light-colored ventral side, eyes usually directed upward, and the mouth also often turned up. While in free-swimming carnivorous fishes the Fig. 26.—Amphioxus, Branchiostoma lanceolatum, burrowed into the sand. Slightly enlarged. Fig. 27.—
RM2RJX0C4–Bildnummer: 52098932 Datum: 05.09.2007 Copyright: imago/Xinhua Biologe hält ein Glas mit Lanzettfischchen (Branchiostoma belcheri) in einem Labor in Xiamen in der chinesischen Provinz Fujian - PUBLICATIONxNOTxINxCHN , Objekte , Tiere , Personen; 2007, Fisch, Fische, Lanzettfischchen, Züchtung, Biologen; , hoch, Kbdig, Einzelbild, close, China, Arbeitswelten, Gesellschaft, , Biologie, Wissenschaft,
![. On the anatomy of vertebrates [electronic resource] . ANATOMY OF VERTEBRATES. 3. of developement of a vertebrate germ (Rabbit), cvir. symmetry, constitutes the chief developmental characteristic ofthe vertebrate animal. The twofold symmetry is shown in the bone-segment, fig. 7 ;also in the flesh-segment surrounding the skeletal one in fig. 6,in which the mid point 4marks the ( noto-chord; with the neu-ral canal above, thehaemal canal below;both surrounded bythe two neural andtwo haemal masses of muscles on each side. The lancelet, Branchiostoma, fig. 23, superinduces its distinc-tive charact Stock Photo](https://c8.alamy.com/comp/2CNFJ5H/on-the-anatomy-of-vertebrates-electronic-resource-anatomy-of-vertebrates-3-of-developement-of-a-vertebrate-germ-rabbit-cvir-symmetry-constitutes-the-chief-developmental-characteristic-ofthe-vertebrate-animal-the-twofold-symmetry-is-shown-in-the-bone-segment-fig-7-also-in-the-flesh-segment-surrounding-the-skeletal-one-in-fig-6in-which-the-mid-point-4marks-the-noto-chord-with-the-neu-ral-canal-above-thehaemal-canal-belowboth-surrounded-bythe-two-neural-andtwo-haemal-masses-of-muscles-on-each-side-the-lancelet-branchiostoma-fig-23-superinduces-its-distinc-tive-charact-2CNFJ5H.jpg ". On the anatomy of vertebrates [electronic resource] . ANATOMY OF VERTEBRATES. 3. of developement of a vertebrate germ (Rabbit), cvir. symmetry, constitutes the chief developmental characteristic ofthe vertebrate animal. The twofold symmetry is shown in the bone-segment, fig. 7 ;also in the flesh-segment surrounding the skeletal one in fig. 6,in which the mid point 4marks the ( noto-chord; with the neu-ral canal above, thehaemal canal below;both surrounded bythe two neural andtwo haemal masses of muscles on each side. The lancelet, Branchiostoma, fig. 23, superinduces its distinc-tive charact Stock Photo")
RM2CNFJ5H–. On the anatomy of vertebrates [electronic resource] . ANATOMY OF VERTEBRATES. 3. of developement of a vertebrate germ (Rabbit), cvir. symmetry, constitutes the chief developmental characteristic ofthe vertebrate animal. The twofold symmetry is shown in the bone-segment, fig. 7 ;also in the flesh-segment surrounding the skeletal one in fig. 6,in which the mid point 4marks the ( noto-chord; with the neu-ral canal above, thehaemal canal below;both surrounded bythe two neural andtwo haemal masses of muscles on each side. The lancelet, Branchiostoma, fig. 23, superinduces its distinc-tive charact
RMRX88K8–Ecological animal geography; an authorized, Ecological animal geography; an authorized, rewritten edition based on Tiergeographie auf ockologischer grundlage ecologicalanimal00hess Year: 1937 Fig. 25.—Haploops tubicola. Enlarged five times. After Delia Valle. Some fishes also hide themselves by burying wholly or partly in the sand, and thus lie in wait for their prey. All these have a flattened, light-colored ventral side, eyes usually directed upward, and the mouth also often turned up. While in free-swimming carnivorous fishes the Fig. 26.—Amphioxus, Branchiostoma lanceolatum, burrowed in
RMRN8A25–. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. Fig. 7. Motorische Platte aus einem mittleren Rumpfsegmente eines erwachsenen Branchiostoma, nach Bielschowsky gefärbt. 1350: 1. ii Fortsetzung der nervösen Platte, welche an den Seitenrändern mit den Querscheiben des Muskelblattes durch feine Seitenästchen in Verbindung steht, m motorische Nervenfaser. B Muskelblatt. dünne Netzwerk nicht mit Sicherheit weiter zu verfolgen. Man ver- gleiche das weiter unten Gesagte. Die Nervenfaser (m) setzt sich fast immer ein wenig seitlich au.. Fig. 8. Motorische Endplatte aus einem vorder
RMPG3YY1–. A manual of zoology. XII PHYLUM CHORDATA 3-3 bers of the sub-phylum, and are best regarded as consti- tuting by themselves a division, which, for reasons which will be manifest shortly, is designated Acrania, the rest of the sub-phylum being known as Craniata. A. THE ACRANIA This isolated group, the Acrania, comprises only a single family, the two genera {Sranchiostoma and Asymmctroii) of which are distin- guished from one another by comparatively slight differences. Branchiostoma (more widely known under the name of Amphioxus), the lancelet, is a small transparent animal, occurring in the s
RMRDH6M0–. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 2G ANATOMY OF VERTEBRATES. the entire animal in the zoological scale. The capsule of the eye- ball, for example, in man, is a fibrous membrane; in the Turtle, it is gristle; in the Tunny, bone. The skeletal framework of tiie Lancelot (Branchiostoma) docs not pass beyond the fibrous stage of tissue-change. In the Sturgeon and Skate it stops at the gristly stage, and hence these fishes are called ' cai-tilaginous.' Inmost fishes, and all air-breatliing verteljrates, it proceeds to the bony stage, with the sul:)sequent modi
RMPG2K8F–. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 2G ANATOMY OF VERTEBRATES. the entire animal in the zoological scale. The capsule of the eye- ball, for example, in man, is a fibrous membrane; in the Turtle, it is gristle; in the Tunny, bone. The skeletal framework of tiie Lancelot (Branchiostoma) docs not pass beyond the fibrous stage of tissue-change. In the Sturgeon and Skate it stops at the gristly stage, and hence these fishes are called ' cai-tilaginous.' Inmost fishes, and all air-breatliing verteljrates, it proceeds to the bony stage, with the sul:)sequent modi
RMRDJFJK–. A manual of zoology. XII PHYLUM CHORDATA 3-3 bers of the sub-phylum, and are best regarded as consti- tuting by themselves a division, which, for reasons which will be manifest shortly, is designated Acrania, the rest of the sub-phylum being known as Craniata. A. THE ACRANIA This isolated group, the Acrania, comprises only a single family, the two genera {Sranchiostoma and Asymmctroii) of which are distin- guished from one another by comparatively slight differences. Branchiostoma (more widely known under the name of Amphioxus), the lancelet, is a small transparent animal, occurring in the s
RMRDMC0A–. The Cambridge natural history. Zoology. 126 CEPHALOCHORDATA CHAP. pharynx (Fig. 71, hr.f). There are, however, a large number (about 100 pairs) of minute nephriclia, discovered (1890) by Weiss and by Boveri independently, lying at the sides of the dorsal coelomic canals above the pharynx, which must be regarded as the chief functional renal organs. These are bent tubules, partly glandular and partly ciliated, each giving off several caecal. Fig. 7S.—Branchiostoma lanceolatum. A nephridium of the left side with part of tlio wall of the pharynx, as seen alive, highly magnified. (From Willey, a
RMRHDP8R–. Bonner zoologische Monographien. Zoology. 34 stages of Branchiostoma lanceolatiim with nine segments do not show any cellu- lar specializations of excretory function. The anterior mesodermal segments are restricted to the dorsolateral sides of the animal; the mesodermal cells of this region are fairly unspecialized but of a clear polar organization and surround a relatively spacious coelomic cavity. Embryos with eleven segments show orga- nelles resembling those of excretory cells of the adults, with a central cilium sur- rounded by ten rod-like microvilli (Stach 1994, Stach & Eisler 199
![. Fishes. Fishes. The Leptocardii, or Lancelets i6 5 their actual common ancestry with the fishes, they must ap- proach near to these in many ways. Their simpHcity is largely primitive, not, as in the Tunicates, the result of subsequent degradation. The lancelets, less than a dozen species in all, constitute a single family, BranchiostomidcB. The principal genus, Branchi- ostoma, is usually called Amphioxus by anatomists. But while. Fig. 115.—California Lancelet, Branchiostoma caU]orniense Gill. (From San Diego.) the name Amphioxus, like lancelet, is convenient in vernacular use, it has no sta Stock Photo](https://c8.alamy.com/comp/RDR601/fishes-fishes-the-leptocardii-or-lancelets-i6-5-their-actual-common-ancestry-with-the-fishes-they-must-ap-proach-near-to-these-in-many-ways-their-simphcity-is-largely-primitive-not-as-in-the-tunicates-the-result-of-subsequent-degradation-the-lancelets-less-than-a-dozen-species-in-all-constitute-a-single-family-branchiostomidcb-the-principal-genus-branchi-ostoma-is-usually-called-amphioxus-by-anatomists-but-while-fig-115california-lancelet-branchiostoma-cau-orniense-gill-from-san-diego-the-name-amphioxus-like-lancelet-is-convenient-in-vernacular-use-it-has-no-sta-RDR601.jpg ". Fishes. Fishes. The Leptocardii, or Lancelets i6 5 their actual common ancestry with the fishes, they must ap- proach near to these in many ways. Their simpHcity is largely primitive, not, as in the Tunicates, the result of subsequent degradation. The lancelets, less than a dozen species in all, constitute a single family, BranchiostomidcB. The principal genus, Branchi- ostoma, is usually called Amphioxus by anatomists. But while. Fig. 115.—California Lancelet, Branchiostoma caU]orniense Gill. (From San Diego.) the name Amphioxus, like lancelet, is convenient in vernacular use, it has no sta Stock Photo")
RMRDR601–. Fishes. Fishes. The Leptocardii, or Lancelets i6 5 their actual common ancestry with the fishes, they must ap- proach near to these in many ways. Their simpHcity is largely primitive, not, as in the Tunicates, the result of subsequent degradation. The lancelets, less than a dozen species in all, constitute a single family, BranchiostomidcB. The principal genus, Branchi- ostoma, is usually called Amphioxus by anatomists. But while. Fig. 115.—California Lancelet, Branchiostoma caU]orniense Gill. (From San Diego.) the name Amphioxus, like lancelet, is convenient in vernacular use, it has no sta
RMRDMC11–. The Cambridge natural history. Zoology. PHARYNX AND GILL-CLEFTS 121 pharynx, but are in a sense portions of the body-wall as well, and correspond in nature, though not in number, to the visceral arches in a Vertebrate lying between the visceral clefts which open on the exterior. In the adult Amphioxus the clefts in the wall of the pharynx do not open directly to the exterior, but into the peribranchial cavity or atrium, which, however, is only formed at a late larval period as an invagination or enclosure. Fig. 74.—Branchiostoma lanceolatwm. A, transverse section of the pharyngeal region. «,
RMRE39RN–. Ecological animal geography; an authorized, rewritten edition based on Tiergeographie auf ockologischer grundlage. Zoogeography -- Geographical distribution; Animal ecology. Fig. 25.—Haploops tubicola. Enlarged five times. After Delia Valle. Some fishes also hide themselves by burying wholly or partly in the sand, and thus lie in wait for their prey. All these have a flattened, light-colored ventral side, eyes usually directed upward, and the mouth also often turned up. While in free-swimming carnivorous fishes the. Fig. 26.—Amphioxus, Branchiostoma lanceolatum, burrowed into the sand. Sligh
![. Bonner zoologische Monographien. Zoology. 9. Fig.2: Scanning electron micrographs of gametes of Branchiostoma Icmceolatum. A - External aspect of late oocytes, dissected from ovary. B - Spermatozoon. Note the three regions of the cell body corresponding to the acrosome, the nucleus, and the mitochondria (from apex to base). In Branchiostoma lanceolatiim the small eggs ( 120 |um in diameter) appear to be without a micropyle (Fig.2; Holland & Holland 1989). The mature male game- te is a "primitive" aquasperm (sensu Franzen 1956), consisting of an apical acro- some, a prominent, Stock Photo](https://c8.alamy.com/comp/RHCWG1/bonner-zoologische-monographien-zoology-9-fig2-scanning-electron-micrographs-of-gametes-of-branchiostoma-icmceolatum-a-external-aspect-of-late-oocytes-dissected-from-ovary-b-spermatozoon-note-the-three-regions-of-the-cell-body-corresponding-to-the-acrosome-the-nucleus-and-the-mitochondria-from-apex-to-base-in-branchiostoma-lanceolatiim-the-small-eggs-120-um-in-diameter-appear-to-be-without-a-micropyle-fig2-holland-amp-holland-1989-the-mature-male-game-te-is-a-quotprimitivequot-aquasperm-sensu-franzen-1956-consisting-of-an-apical-acro-some-a-prominent-RHCWG1.jpg ". Bonner zoologische Monographien. Zoology. 9. Fig.2: Scanning electron micrographs of gametes of Branchiostoma Icmceolatum. A - External aspect of late oocytes, dissected from ovary. B - Spermatozoon. Note the three regions of the cell body corresponding to the acrosome, the nucleus, and the mitochondria (from apex to base). In Branchiostoma lanceolatiim the small eggs ( 120 |um in diameter) appear to be without a micropyle (Fig.2; Holland & Holland 1989). The mature male game- te is a "primitive" aquasperm (sensu Franzen 1956), consisting of an apical acro- some, a prominent, Stock Photo")
RMRHCWG1–. Bonner zoologische Monographien. Zoology. 9. Fig.2: Scanning electron micrographs of gametes of Branchiostoma Icmceolatum. A - External aspect of late oocytes, dissected from ovary. B - Spermatozoon. Note the three regions of the cell body corresponding to the acrosome, the nucleus, and the mitochondria (from apex to base). In Branchiostoma lanceolatiim the small eggs ( 120 |um in diameter) appear to be without a micropyle (Fig.2; Holland & Holland 1989). The mature male game- te is a "primitive" aquasperm (sensu Franzen 1956), consisting of an apical acro- some, a prominent,
RMRG31NY–. The Cambridge natural history. Zoology. 138 CEPHALOCHORDATA Thus sixteen species have been described, of which the three under Branchiostoma placed after square brackets, seem to be merely varieties of B. lanceolatum, and B. nakagau-ae is probably identical with B. helcheri; while it is a question whether Asym- metron caudatum is more than a variety of A. lucayanum, thus leaving eleven or twelve species that seem fairly well character- ised. The exact positions of the two marked (?), viz. B. elonga- tum and B. pelagicum, cannot be determined in the absence of fuller descriptions of these spe
RMRGFXFG–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 42 bulletin: museum of comparative zoology. beginning at the third myotome and extending almost to the posterior end, a series of smaller spots in groups irregularly twice as numerous as the myotomes. The gonads form two series, one righfand one left, though, as intimated by Giinther (1889, p. 44), they are often so closely pressed together near the median phme that they there seem to form a single median row. The presence of a double row of gonads places tliis species untpiestionably in the genus Branchiostoma. The n
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COELOMIC CAVITIES IN LARVAL AMPHIOXUS 261 ecm. Figure 1. (A & B) Transmission electron micrographs of a larva of Branchiostoma lanceolatum [110 h post fertilization. 18°C; methods: (20)]. (A) Cross section of the trunk region. Structures labeled ecm are situated in areas where major blood vessels are situated in adults. (B) Hatschek's nephridium. Cyrtopodo- cytes on the enlarged ecm where the rudiment of the left anterior aorta is formed. (C) Diagrammatic dorsal view of coelomic cavities, a, anus; ao, anlage of the left Stock Photo](https://c8.alamy.com/comp/RHKM97/the-biological-bulletin-biology-zoology-biology-marine-biology-coelomic-cavities-in-larval-amphioxus-261-ecm-figure-1-a-amp-b-transmission-electron-micrographs-of-a-larva-of-branchiostoma-lanceolatum-110-h-post-fertilization-18c-methods-20-a-cross-section-of-the-trunk-region-structures-labeled-ecm-are-situated-in-areas-where-major-blood-vessels-are-situated-in-adults-b-hatscheks-nephridium-cyrtopodo-cytes-on-the-enlarged-ecm-where-the-rudiment-of-the-left-anterior-aorta-is-formed-c-diagrammatic-dorsal-view-of-coelomic-cavities-a-anus-ao-anlage-of-the-left-RHKM97.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COELOMIC CAVITIES IN LARVAL AMPHIOXUS 261 ecm. Figure 1. (A & B) Transmission electron micrographs of a larva of Branchiostoma lanceolatum [110 h post fertilization. 18°C; methods: (20)]. (A) Cross section of the trunk region. Structures labeled ecm are situated in areas where major blood vessels are situated in adults. (B) Hatschek's nephridium. Cyrtopodo- cytes on the enlarged ecm where the rudiment of the left anterior aorta is formed. (C) Diagrammatic dorsal view of coelomic cavities, a, anus; ao, anlage of the left Stock Photo")
RMRHKM97–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COELOMIC CAVITIES IN LARVAL AMPHIOXUS 261 ecm. Figure 1. (A & B) Transmission electron micrographs of a larva of Branchiostoma lanceolatum [110 h post fertilization. 18°C; methods: (20)]. (A) Cross section of the trunk region. Structures labeled ecm are situated in areas where major blood vessels are situated in adults. (B) Hatschek's nephridium. Cyrtopodo- cytes on the enlarged ecm where the rudiment of the left anterior aorta is formed. (C) Diagrammatic dorsal view of coelomic cavities, a, anus; ao, anlage of the left
RMRHDP50–. Bonner zoologische Monographien. Zoology. «. pm B Fig.24: Schematic line drawings showing the ontogenetic origin of different coelomic spa- ces. A - Branchiostoma Icmceolatiim, after Prenant (1936); B - Branchiostoma floridae, after Holland et al. (1995). at - atrial cavity, co - coelom, epc - evaginating perivisceral coe- lom, gt - gonotome, mc - myocoel, mt - myotome, pc - perivisceral coelom, pm - pterygi- al muscle, sc - sclerocoel, st - sclerotome. partments should become pinched off from the dorsal mesodermal segments during the first two days of development (Fig.24). The ventral part
RMRHDP6Y–. Bonner zoologische Monographien. Zoology. 39. Fig.20: Transmission electron micrograph of the endostyle of a lara of Branchiostoma lan- ceolatum (llOh pf. 18°C). A - Low power magnification of the entire organ in cross sec- tional aspect. Note the clear zonation and the close proximity of the rostral coelomic cavi- ty. B - Higher magnification of zone 4-cells. Note the extensive profiles of endoplasmic reticulum around the nuclei, csg - club-shaped gland, mi - mitochondria, nu - nucleus, RC - rostral coelom. rer - rough endoplasmic reticulum, ve - apical vesicles; labelling of zones accordi
RMRHCWFF–. Bonner zoologische Monographien. Zoology. 10. Fig.3: Line drawing of a lateral aspect of an early larva of Branchiostoma lanceolatiim (ca. llOh post-fertilization, 18°C). Nonnal feeding posi- tion: the long axis of the body is at an angle of about 60 from horizontal and the anterior end and the ventral surface are directed towards the surface. In the upper left comer two individuals of Diinaliella (Chlorophycaea, Polyblepha- ridaceae), a regular food orga- nism in laboratory cultures of B. lanceolatiim, are depicted. Ontogenetic stage comparable to one shown in Fig.7. planktonic larvae in th
RMRHKMBT–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. AMPHIOXUS HEMOGLOBIN 257. 20 25 Time (minutes) I I I I I I I 10 20 30 40 50 60 70 80 Time (minutes) Figure 2. Ekition profiles, obtained by high performance liquid chromatography, for extracts of Branchiostoma califomiense notochord and myotome. Peaks marked with an asterisk represent the Hb-con- taining tractions. The chromatographic system consisted of a ternary gradient HPLC pump attached to a UV-visible absorption detector via an appropriate column. Size-exclusion chromatography (SEC) was per- formed on notochord extract
RMRN8A2N–. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. Fig. 7. Motorische Platte aus einem mittleren Rumpfsegmente eines erwachsenen Branchiostoma, nach Bielschowsky gefärbt. 1350: 1. ii Fortsetzung der nervösen Platte, welche an den Seitenrändern mit den Querscheiben des Muskelblattes durch feine Seitenästchen in Verbindung steht, m motorische Nervenfaser. B Muskelblatt. dünne Netzwerk nicht mit Sicherheit weiter zu verfolgen. Man ver- gleiche das weiter unten Gesagte. Die Nervenfaser (m) setzt sich fast immer ein wenig seitlich au.. Please note that these images are extracted f
RMRGG277–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 180 bulletin: museum of comparative zoology. Otostigmus tibialis Brolemann. Rev. Mus. Paulista, 1901, 5, p. 39, fig. 4, 5. Otostigmus caudatus tibialis Kraepelin, Revis. Scolop., 1903, p. 132, fig. 73, 74. Otostigmus caudatus Brolemann, Cat. Myr. Bresil, 1909, p. 13. Localities.— State of Sao Paulo: Sao Paulo, Piquete, Alto da Serra, Santos; State of Parana. Trematophycus Peters. Reise Mozambique, 1862, 5, p. 519. Branchiostoma Newport (nom. preocc.) Trans. Linn. soc. London, 1844, 19, p. 411; Meinert, Proc.
![. Lehrbuch der Vergleichenden Mikroskopischen Anatomie der Wirbeltiere [electronic resource]. Vertebrates; Eye; Vertebrates; Eye. Fig. 3. Horizontaler Längs- schnitt durch das Vorder- ende eines erwachsenen Amphioxus, das Kücken- mark mit den Becheraugen im 2., 4. und 5. Segment zeigend. Nach Hesse. Kom- binationsbild. zu werden scheinen. Parker bestätigt dies für Amphioxus lanceolatus und A. caribbaeus (Branchiostoma caribbaeum). Nach Boeke (1902) haben junge pelagische Individuen zwei Hauptgruppen von Becherzellen, eine vordere und eine hintere.. Fig. 5. Ein Hessesches Sehorgan aus dem Rücke Stock Photo](https://c8.alamy.com/comp/RJNEY8/lehrbuch-der-vergleichenden-mikroskopischen-anatomie-der-wirbeltiere-electronic-resource-vertebrates-eye-vertebrates-eye-fig-3-horizontaler-lngs-schnitt-durch-das-vorder-ende-eines-erwachsenen-amphioxus-das-kcken-mark-mit-den-becheraugen-im-2-4-und-5-segment-zeigend-nach-hesse-kom-binationsbild-zu-werden-scheinen-parker-besttigt-dies-fr-amphioxus-lanceolatus-und-a-caribbaeus-branchiostoma-caribbaeum-nach-boeke-1902-haben-junge-pelagische-individuen-zwei-hauptgruppen-von-becherzellen-eine-vordere-und-eine-hintere-fig-5-ein-hessesches-sehorgan-aus-dem-rcke-RJNEY8.jpg ". Lehrbuch der Vergleichenden Mikroskopischen Anatomie der Wirbeltiere [electronic resource]. Vertebrates; Eye; Vertebrates; Eye. Fig. 3. Horizontaler Längs- schnitt durch das Vorder- ende eines erwachsenen Amphioxus, das Kücken- mark mit den Becheraugen im 2., 4. und 5. Segment zeigend. Nach Hesse. Kom- binationsbild. zu werden scheinen. Parker bestätigt dies für Amphioxus lanceolatus und A. caribbaeus (Branchiostoma caribbaeum). Nach Boeke (1902) haben junge pelagische Individuen zwei Hauptgruppen von Becherzellen, eine vordere und eine hintere.. Fig. 5. Ein Hessesches Sehorgan aus dem Rücke Stock Photo")
RMRJNEY8–. Lehrbuch der Vergleichenden Mikroskopischen Anatomie der Wirbeltiere [electronic resource]. Vertebrates; Eye; Vertebrates; Eye. Fig. 3. Horizontaler Längs- schnitt durch das Vorder- ende eines erwachsenen Amphioxus, das Kücken- mark mit den Becheraugen im 2., 4. und 5. Segment zeigend. Nach Hesse. Kom- binationsbild. zu werden scheinen. Parker bestätigt dies für Amphioxus lanceolatus und A. caribbaeus (Branchiostoma caribbaeum). Nach Boeke (1902) haben junge pelagische Individuen zwei Hauptgruppen von Becherzellen, eine vordere und eine hintere.. Fig. 5. Ein Hessesches Sehorgan aus dem Rücke
RMRDMC1H–. The Cambridge natural history. Zoology. Fig. 69.—Amphioxus {Branchiostoma lanceolalum) in the Pantano at Messina. (After Willey.) thus constitute a continuous median fold around a great part of the animal (Fig. 70, B, and Fig. 71).. Fig. 70.—Branchiostoma lanceolatitm. A, ventral ; B, side view of the entire animal. an. Anus ; atrp, atriopore ; cd.f, caudal fin ; cir, eirri ; dors.f, dorsal fin ; dors.f.r, dorsal fin-rays ; gon, gonads ; intjil, metapleure ; myom, myomeres ; noli, noto- chord; or.hd., oral hood: vent.f, ventral fin; ventf.r, ventral fin-rays. (After Kirkaldy.) The surface is
RMRHMD3G–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 102 N. SAPERAS ET AL. A 1 B 2 3 m - H5 — H3 >, H2B H2A- H4 -. -W.H1 H3 H2B *H2A H4 Figure I. (A) Acetic acid (5%)—urea (2.5 M)—PAGE analysis of (I) chicken erythrocyte histones, (2) nuclear sperm proteins from the mussel fytitu. californianus, (3) nuclear sperm proteins from the ascidian tunicate Styclu plicate:. (4) nuclear sperm proteins from the lancelet Branchiostoma lloridac. and (5) salmine (protamine). Direction of electrophoresis is from top ( + ) to bottom (-). (B) Acetic acid (5''r)—urea (6 .U) (first dimensio
RMRN86P8–. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. Ha,. Fig. 11. Fig. 12. Fig. 8—10. Querschnitte durch Ende, Mitte und Anfang eines Mundtentakels von einem Branchiostoma von 9 mm Länge. 1800:1. 3 x.. In Fig. 10 ist die Anlage des von Joseph beschriebenen fibrillären Halbzylinders an der Seite des Skelettstabes schon sichtbar. Fig. 11 und 12. Zwei Querschnitte durch Ende und Mitte eines Tentakels von einem Branchiostoma von 56 mm Länge. 1800:1. Ha fibrillärer Halbzylinder Jo- sephs. In Fig. 11 ist nur eine Zelle sichtbar; in Fig. 12 sind die Kerne von 4 Zellen in den Schnitt
RMRDMC1M–. The Cambridge natural history. Zoology. EXTERNAL CHARACTERS 115 (caudal fin, cd.f), and then forwards along the upper surface (dorsal fin, dors.f) to the anterior end of the body. These fins. Fig. 69.—Amphioxus {Branchiostoma lanceolalum) in the Pantano at Messina. (After Willey.) thus constitute a continuous median fold around a great part of the animal (Fig. 70, B, and Fig. 71).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
Search Results for Branchiostoma Stock Photos and Images (67)
Page 1 of 1