Comparative organ differentiation during early life stages of marine fish

Ib, Falk-Petersen

doi:10.1016/j.fsi.2005.03.006

Cited by 132 publications

(134 citation statements)

References 55 publications

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“…Most part of notochord degenerates, but the portion between the vertebras originates the tissue of inter-vertebral disks. According to Falk-Petersen (2005), the notochord is composed of vacuolated cells separated by thin cell membranes.…”

Section: Discussionmentioning

confidence: 99%

Brycon gouldingi(Teleostei, Characidae): aspects of the embryonic development in a new fish species with aquaculture potential

Faustino

Nakaghi

Neumann³

2010

Zygote

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SummaryBrycon gouldingi is an endemic species from Tocantins-Araguaia basin, used as a food source by riverine communities and relevant to aquaculture. Information about the initial morphology of B. gouldingi, a recently described species, is absent. In the present study, we analysed the fertilization and the embryonic development of this species based on light and scanning electron microscopy. After collection of adult specimens in Mortes River -Mato Grosso, Brazil, adaptation to captivity and induced spawning at Buriti Fishculture, Nova Mutum -Mato Grosso, Brazil, in December 2007 and January 2008, samples were collected at pre-defined periods from egg extrusion up to larval hatching, which occurred at 13.9 ± 0.06 h post-fertilization (hpf) in average. At the moment of extrusion, the eggs were slightly ovoid bearing a single micropyle per oocyte with a funnel-shaped micropyle canal and vestibule covered with longitudinal folds, typical of the genus Brycon. The embryonic development of B. gouldingi was characterized by six stages with distinct features: zygote (from fertilization up to formation of egg-cell); cleavage (cell divisions resulting in blastomeres, including the morula phase); blastula (several embryonic cells in a cup shape, without distinction of cell boundaries); gastrula (cell movement); histogenesis/organogenesis (formation of tissues and organs); and hatching (larval chorion rupture). Right after hatching, the larvae presented neither swimming abilities nor visual accuracy, and the digestive trait was undifferentiated. The present study is the first report on biological features of embryogenesis in B. gouldingi, providing relevant information to several approaches, mainly related to taxonomy, ecology, conservation and captive rearing of this new Brycon species.

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Section: Discussionmentioning

confidence: 99%

Brycon gouldingi(Teleostei, Characidae): aspects of the embryonic development in a new fish species with aquaculture potential

Faustino

Nakaghi

Neumann³

2010

Zygote

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“…The sensitivity of larvae to low food intake, especially following yolk absorption, can significantly influence their chances of survival. Main organs and organ-systems become functional by first feeding and differentiate during the larval stage and metamorphosis (Falk-Petersen 2005). There are inter-specific variations in the timing of organ formation, developing and functionality of different systems, organs and tissues, which depend on several genetic, nutritional and/or environment factors , Falk-Petersen 2005, Zambonino-Infante et al 2008.…”

Section: Introductionmentioning

confidence: 99%

A morphohistological and histochemical study of hatchery-reared European hake, <i>Merluccius merluccius</i> (Linnaeus, 1758), during the lecitho-exotrophic larval phase

Ortiz-Delgado¹,

Iglesias²,

Sánchez³

et al. 2012

Sci. Mar.

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SUMMARY:The larval development of reared European hake, Merluccius merluccius (Linnaeus, 1758), during the lecithotrophic phase, from hatching until 5 days post-hatching (dph), and throughout the endo-exotrophic feeding phase (6-10 dph) was studied by histology and histochemistry. Many crucial morphological, cellular and tissular changes were observed during both feeding phases, mostly those related to digestive and visual ontogenetic events, such as differentiation of buccopharyngeal cavity and eye development (at hatching); pigmentation and differentiation of cone-photoreceptors (4 dph); opening of the mouth and anus, appearance of intestinal valves (5-6 dph); presence of buccopharyngo-esophageal (5-6 dph) and intestinal (9 dph) mucous cells; folding of intestinal mucosa (6 dph); development of regional specific digestive musculature (6 dph); typical structure and functionality of the liver (sinusoids, biliary and pancreatic ducts, glycogen, protein and lipid reserves) (4-6 dph); and characteristic acinar distribution pattern of eosinophilic zymogen granules of the exocrine pancreas (6 dph). Between 9 and 10 dph, the hake larvae showed evident signs of lipid absorption within enterocytes of the anterior intestinal region and a remarkable process of pynocitosis and intracellular digestion was detected in the posterior intestine (supranuclear inclusions or acidophilic protein vesicles). In hake larvae at 10 dph, a proliferation of renal tubules, spleen differentiation and gill development, as well as the presence of the first thyroid follicle, were clearly distinguished. At this time, stomach gastric gland differentiation was not detected and endocrine pancreas and gill lamellae were not evidenced. However, and interestingly, swim bladder and eyes (developing rods) were well differentiated in larval development from 9 dph onwards. In summary, in European hake larval development during the endo-exogenous feeding phase and especially at 9 to 10 dph, most systems, organs and tissues were well differentiated. Particularly, digestive and visual systems were developed and physiologically functional some days before the start of the exogenous feeding phase.Keywords: European hake, Merluccius merluccius, larvae, histology, histochemistry, ontogeny, yolk sac, endo-exotrophic feeding, visual acuity. RESUMEN:Estudio morfohistológico e histoquímico de larvas cultivadas de merluza europea, Merluccius Merluccius (Linnaeus, 1758), durante la fase lecito-exotrófica. -Se ha realizado un estudio histológico e histoquími-co del desarrollo larvario de la merluza europea, Merluccius merluccius (Linnaeus, 1758) durante la fase lecitotrófica, desde la eclosión hasta los 5 días post-eclosión -dpe-, y en la fase endo-exotrófica (larvas de 6-10 dpe). Durante ambas fases alimentarias se han observado importantes cambios morfológicos, celulares y tisulares, principalmente aquellos relacionados con la ontogenia digestiva y visual, tales como: la diferenciación de la cavidad bucofaríngea y desarrollo y diferenciación ocular (en el momento de...

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“…The importance of the early appearance of the pancreas islets for general metabolism and further development of the larvae has been previously shown by several authors (Tanaka et al 1995;Ortiz-Delgado et al 2003;Falk-Petersen 2005;Zambonino Infante et al 2008;Hachero-Cruzado et al 2009). Following opening of the mouth, the size of the pancreas and the number of zymogen granules increased in Hamun mahi.…”

Section: Developed Pharyngeal Teeth (Pt) In the Areolar Connective mentioning

confidence: 70%

“…The timing of organ development and its associated physiological functions are affected by the general life history of each species and a number of abiotic and biotic factors such as water temperature, food availability and food composition during early life stages. These changes determine the nutritional and physiological performances of a fish, and therefore its ability to deal with challenges during its subsequent life (Blaxter 1988;Fuiman 1997;Falk-Petersen 2005;Zambonino Infante et al 2008). Hence, it becomes necessary to carry out specific organogenesis studies for each species to optimize larval-rearing techniques and adequate feeding conditions.…”

Section: Introductionmentioning

confidence: 99%

Early ontogenetic development of digestive system inSchizothorax zarudnyiNikolskii, 1897 (Actinopterygii: Cyprinidae) larvae

Moghadam¹,

Behrouz²,

Rezaei³

et al. 2014

Italian Journal of Zoology

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The development of digestive tract and accessory glands in Hamun mahi (Schizothorax zarudnyi, Family: Cyprinidae) from hatching to 21 days after hatching (DAH) is described in this study. This information is critical for evaluating the digestive tract functional capacity and physiology of digestion in larvae, and designing optimal rearing techniques and artificial diets for this commercially valuable species. Based upon its feeding mode and structural changes in the digestive tract, larval ontogeny in S. zarudnyi was divided into three stages, Stage 1: 0-2 DAH, Stage 2: 3-8 DAH and Stage 3: from 9 DAH onwards. As in most teleosts, Hamun mahi at hatching had an undifferentiated digestive tract. The most critical ontogenetic events occurred at Stage 2. At the beginning of Stage 2, mouth opened in conjunction with the differentiation of the digestive tract. During Stages 2 and 3 the gut differentiated, and buccopharyngeal cavity, oesophgus and incipient intestine became distinguishable. At this stage digestive tract processes continued to develop (e.g. entrocyte's brushborders, appearance of digestive mucous cells at 4 DAH, and gut mucosal folds). The first taste buds and pharyngeal teeth appeared at the beginning of Stage 2. Histological observations suggest that digestive tract development of the Hamun mahi larvae, involving the presence of functional liver (vacuolated hepatocyes), exocrine and endocrine pancreas, and gallbladder enabled early larvae (from 3 DAH) to ingest, digest and assimilate the first exogenous food, even before endogenous reserves were completely resorbed. From Stage 3 onwards, most organs essentially exhibited an increase in tissue structure, size and number.

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Comparative organ differentiation during early life stages of marine fish

Cited by 132 publications

References 55 publications

Brycon gouldingi(Teleostei, Characidae): aspects of the embryonic development in a new fish species with aquaculture potential

Brycon gouldingi(Teleostei, Characidae): aspects of the embryonic development in a new fish species with aquaculture potential

A morphohistological and histochemical study of hatchery-reared European hake, <i>Merluccius merluccius</i> (Linnaeus, 1758), during the lecitho-exotrophic larval phase

Early ontogenetic development of digestive system inSchizothorax zarudnyiNikolskii, 1897 (Actinopterygii: Cyprinidae) larvae

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