scholarly journals A potential endemic cyprinid for aquaculture and food security: The embryonic development of the Bornean spotted barb Puntius sealei (Herre, 1933)

2021 ◽  
Vol 5 (2) ◽  
pp. 55-62
Author(s):  
Lirong Yu Abit ◽  
Edmond Felix Unggang ◽  
Abdulla Al Asif ◽  
Kamil Latif
Keyword(s):  
Food Security ◽  
Embryonic Development ◽  
Early Life ◽  
Developmental Stages ◽  
Early Life History ◽  
Breeding Method ◽  
Freshwater Bodies ◽  
Endemic Fish ◽  
Early Developmental ◽  
Ornamental Trade

The Bornean Spotted Barb is endemic fish species and widely distributed throughout Borneo in various freshwater bodies and can be considered as a potential aquaculture candidate for food security and the ornamental trade. However there has yet to be scientific studies on the early life history and developmental stages of this species. Thus the present study reveals the embryonic development of Puntius sealei embryo, from fertilization to post-hatching using the induced breeding method. The induced spawning on P. sealei using Ovaprim hormone at a dose of 0.5 ml/kg for females and 0.25ml/kg for males respectively was successfully conducted and the embryonic development of the fertilized eggs were observed. The zygote, cleavage, blastula, gastrula, segmentation, and larval phases were the six major stages of embryogenesis that investigated in this experiment. This study contributed major knowledge to the early developmental biology of this particular species. The information will be useful for accessing the potentiality of this species for aquaculture as well as the management, and production of the species. Asian Australas. J. Food Saf. Secur. 2021, 5 (2), 55-62

scholarly journals Embryonic Development of Bhakur Catla catla Hamilton 1822 (Cyprinidae)

Our Nature ◽  
2015 ◽  
Vol 12 (1) ◽  
pp. 49-53
Author(s):  
J. Tumbahangfe ◽  
Bharat Raj Subba ◽  
S. K. Jha
Keyword(s):  
Developmental Biology ◽  
Sustainable Development ◽  
Life History ◽  
Embryonic Development ◽  
Water Temperature ◽  
Early Life ◽  
Developmental Stages ◽  
Early Life History ◽  
Catla Catla ◽  
The Sustainable Development

The present study was carried out to investigate the embryonic development of Bhakur, Catla catla. The incubation period of Bhakur was found to be 13 hrs of post fertilization at 30±1oC of water temperature. The present work generated some important information on the early life history and developmental stages of Bhakur in Nepal. This study will help the fishery biologist in understanding the developmental biology of the fish, which might be of great use to take appropriate steps for the sustainable development of the culture, management, and production of indigenous breeds required for fish culture in Nepal climatic condition.DOI: http://dx.doi.org/10.3126/on.v12i1.12257Our Nature (2014), 12(1):49-53

scholarly journals Wnt/β-catenin Pathway-Mediated PPARδ Expression during Embryonic Development Differentiation and Disease

2021 ◽  
Vol 22 (4) ◽  
pp. 1854
Author(s):  
Tabinda Sidrat ◽  
Zia-Ur Rehman ◽  
Myeong-Don Joo ◽  
Kyeong-Lim Lee ◽  
Il-Keun Kong
Keyword(s):  
Embryonic Development ◽  
Transcriptional Activation ◽  
Target Gene ◽  
Developmental Stages ◽  
Embryonic Stem ◽  
Hereditary Diseases ◽  
Peroxisome Proliferator ◽  
Peroxisome Proliferator Activated Receptor ◽  
Stem Cell Regulation ◽  
Early Developmental

The Wnt/β-catenin signaling pathway plays a crucial role in early embryonic development. Wnt/β-catenin signaling is a major regulator of cell proliferation and keeps embryonic stem cells (ESCs) in the pluripotent state. Dysregulation of Wnt signaling in the early developmental stages causes several hereditary diseases that lead to embryonic abnormalities. Several other signaling molecules are directly or indirectly activated in response to Wnt/β-catenin stimulation. The crosstalk of these signaling factors either synergizes or opposes the transcriptional activation of β-catenin/Tcf4-mediated target gene expression. Recently, the crosstalk between the peroxisome proliferator-activated receptor delta (PPARδ), which belongs to the steroid superfamily, and Wnt/β-catenin signaling has been reported to take place during several aspects of embryonic development. However, numerous questions need to be answered regarding the function and regulation of PPARδ in coordination with the Wnt/β-catenin pathway. Here, we have summarized the functional activation of the PPARδ in co-ordination with the Wnt/β-catenin pathway during the regulation of several aspects of embryonic development, stem cell regulation and maintenance, as well as during the progression of several metabolic disorders.

scholarly journals Impact of CO<sub>2</sub>-driven ocean acidification on invertebrates early life-history – What we know, what we need to know and what we can do

2009 ◽  
Vol 6 (2) ◽  
pp. 3109-3131 ◽  
Author(s):  
S. Dupont ◽  
M. C. Thorndyke
Keyword(s):  
Life History ◽  
Ocean Acidification ◽  
Early Life ◽  
Developmental Stages ◽  
Marine Invertebrates ◽  
Early Life History ◽  
Rate Of Change ◽  
Marine Biodiversity ◽  
Larval Stages ◽  
Long Term Impact

Abstract. As a consequence of increasing atmospheric CO2, the world's oceans are becoming more acidic and the rate of change is increasingly fast. This ocean acidification is expected to have significant physiological, ecological and evolutionary consequences at many organizational levels of marine biodiversity. Alarmingly little is known about the long term impact of predicted pH changes (a decrease of −0.3/−0.4 units for the end of this century) on marine invertebrates in general and their early developmental stages in particular, which are believed to be the more sensitive to environmental disturbances, are essential as unit of selection, recruitment and population maintenance. Ocean acidification (OA) research is in its infancy and although the field is moving forward rapidly, good data are still scarce. Available data reveal contradictory results and apparent paradoxes. In this article, we will review available information both from published sources and work in progress, drawing a general picture of what is currently known, with an emphasis on early life-history larval stages. We will also discuss what we need to know in a field with very limited time resources to obtain data and where there is a high expectation that the scientific community should rapidly be able to provide clear answers that help politicians and the public to take action. We will also provide some suggestions about what can be done to protect and rescue future ecosystems.

Development in culture of larval spotted spiny lobster Panulirus guttatus (Latreille, 1804) (Decapoda: Achelata: Palinuridae)

2019 ◽  
Vol 39 (5) ◽  
pp. 574-581 ◽  
Author(s):  
Jason S Goldstein ◽  
Hirokazu Matsuda ◽  
Thomas R Matthews ◽  
Fumihiko Abe ◽  
Takashi Yamakawa
Keyword(s):  
Life History ◽  
Final Stage ◽  
Early Life ◽  
Developmental Stages ◽  
Spiny Lobster ◽  
Total Duration ◽  
Early Life History ◽  
Population Connectivity ◽  
Fishery Resource ◽  
Panulirus Guttatus

Abstract There is little information on the early life history of the spotted spiny lobster Panulirus guttatus (Latreille, 1804), an obligate reef resident, despite its growing importance as a fishery resource in the Caribbean and as a significant predator. We cultured newly-hatched P. guttatus larvae (phyllosomata) in the laboratory for the first time, and the growth, survival, and morphological descriptions are reported through 324 days after hatch (DAH). Phyllosomata were cultured at 25 °C in a flow-through seawater system within a series of custom 80 l plankton-kreisel tanks and provided with ongrown Artemia and mussel gonad. Mean body length (BL) of phyllosomata was 1.70 mm (N = 10) at hatch and increased linearly to 22.20 mm at 226 DAH (N = 3). Morphological characters from a total of 164 sampled phyllosomata were ascribed to nine distinct developmental stages (stages I-IX), and described and illustrated. Although no final stage phyllosomata (stage X) were obtained, the BL in the final stage was extrapolated at 39.6 mm using a Gompertz function, expressing the relationship between phyllosoma stages and BL. The total duration of phyllosomata for P. guttatus was estimated at 410 d, with the 5th and 95th percentiles at 334 and 526 d, respectively. Our data suggest that P. guttatus has a larger body size in the final larval stage and a substantial pelagic larval duration compared with other related panulirid lobsters in its geographic range. The described morphological and biological attributes associated with the early-life history for this species can inform future studies, and add value to models of distribution and population connectivity.

Early post-embryonic development in Ellipsostrenua (Trilobita, Cambrian, Sweden) and the developmental patterns in Ellipsocephaloidea

2018 ◽  
Vol 92 (6) ◽  
pp. 1018-1027 ◽  
Author(s):  
Lukáš Laibl ◽  
Peter Cederström ◽  
Per Ahlberg
Keyword(s):  
Embryonic Development ◽  
Anterior Margin ◽  
Developmental Stages ◽  
Size Variation ◽  
Developmental Patterns ◽  
Anterior Branch ◽  
Early Developmental Stages ◽  
Cambrian Trilobite ◽  
Early Developmental ◽  
Circular Outline

AbstractThis study documents the early post-embryonic developmental stages (protaspides and early meraspides) of the Cambrian trilobite Ellipsostrenua granulosa (Ahlberg, 1984) from the Gärdsjön Formation of Jämtland, Sweden. The early protaspid stage is characterized by a circular outline of the exoskeleton, two pairs of fixigenal spines, a short preglabellar field, a genal swelling, and prominent bacullae. The late protaspid stage differs only in having the trunk portion discernible. Early meraspid cranidia are sub-rectangular with prominent palpebral lobes, a wide anterior margin, a proportionally long anterior branch of the facial suture, and intergenal spines. Meraspid pygidia tentatively assigned to this species possess comparatively long macrospines. Small hypostomes associated with E. granulosa bear at least four pairs of marginal spines. A comparison of the early developmental stages of E. granulosa with some other species of Ellipsocephalidae and with species of the closely related Estaingiidae reveals several similarities. The conservative morphology of the early protaspid stage with only two pairs of fixigenal spines, the timing of the development of the trunk portion, and the presence of genal swellings and prominent bacullae could be phylogenetically informative. The range of size variation of the early protaspid stages in two families may be related either to taxonomical differences between Ellipsocephalidae and Estaingiidae, or to environmental differences in various paleogeographic settings.

A Potential Role for beta-Carotene in Avian Embryonic Development

2004 ◽  
Vol 74 (2) ◽  
pp. 116-122 ◽  
Author(s):  
Mora ◽  
Kuri-Melo ◽  
González-Gallardo ◽  
Meléndez ◽  
Morales ◽  
...  
Keyword(s):  
Vitamin A ◽  
Embryonic Development ◽  
Developmental Stages ◽  
De Novo ◽  
Primary Source ◽  
Beta Carotene ◽  
Egg Yolk ◽  
Local Source ◽  
The Central Nervous System ◽  
Early Developmental

Vitamin A is essential for vertebrate embryonic development; dietary carotenoids are the primary source of vitamin A since animals cannot synthesize it de novo. To study the role of beta-carotene during embryonic development, we analyzed in chick embryos the expression of beta,beta-carotene 15,15'-oxygenase (beta-oxy) which cleaves beta-carotene to produce two molecules of retinal. beta-oxy transcripts were detected in one-and-a-half- to five-day-old embryo homogenates and in situ hybridization in five-day-old embryos, revealing their presence in tissues including the central nervous system, lungs, limbs, and cardiovascular system. Moreover, we detected beta-oxy enzymatic activity in extracts from five-day-old embryos as well as small amounts of beta-carotene in the egg yolk. These results indicate that beta-oxy is present during early developmental stages, raising the possibility that yolk-stored beta-carotene is utilized as a source of vitamin A. Thus, our results suggest that beta-carotene could play an important role in early avian embryonic development as a local source of vitamin A in specific tissues.

scholarly journals EMBRYONIC DEVELOPMENT OF CLARIAS BATRACHUS UNDER THE INFLUENCE OF AERATION AND WATER FLOW

2013 ◽  
Vol 18 ◽  
pp. 25-31
Author(s):  
Sk. Mustafizur Rahman ◽  
Md. Ahasan Habib ◽  
Quazi Zahangir Hossain ◽  
Md. Noman Siddiqui ◽  
Md. Mostafizur Rahman ◽  
...  
Keyword(s):  
Embryonic Development ◽  
Water Flow ◽  
Developmental Stages ◽  
Cost Effective ◽  
Clarias Batrachus ◽  
Experimental Conditions ◽  
Early Developmental Stages ◽  
Time Requirements ◽  
Early Developmental

Specific investigation on the time (h) required for catfish, Clarias batrachus, embryos to reach various early developmental stages were carried out under different experimental conditions. Five hundred fertilized eggs were incubated in tray (28ºC–30.5ºC) with continuous water flow and aeration (T1), with only continuous water flow (T2) or aeration (T3) and without continuous water flow and aeration (T4). Fertilized embryos hatched successfully in all treatments except for T4. Time requirements for 2-cell, 4-cell, 8-cell, morula, germinal ring, yolk-plug, twisting movement, prehatching and hatching were comparable for all treatments. However, developmental speed was ceased from yolk-plug stage for T4. Time requirements for two-cell, four-cell, eight-cell, morula, germinal ring, yolk-plug, twisting movement, and hatching were 0.43, 0.48, 0.53, 3.52, 6.07, 8.50, 15.04, 20.08, and 21.40 h, respectively for T1; 0.44, 0.47, 0.51, 3.49, 6.10, 8.51, 15.13, 20.19, and 21.56 h, respectively for T2; 0.50, 0.53, 0.59, 3.52, 6.13, 8.53, 15.11, 20.18, and 22.13 h, respectively for T3. Fertilized eggs of C. batrachus incubated in tray with only aeration (T3) is sufficient for successful hatching and could be cost-effective for hatchery operation.DOI: http://dx.doi.org/10.3126/eco.v18i0.9395Ecoprint: An International Journal of EcologyVol. 18, 2011 Page: Uploaded date: 12/20/2013 

Some Comments on Balon’s Terminology of Fish Development Intervals

1976 ◽  
Vol 33 (5) ◽  
pp. 1253-1254 ◽  
Author(s):  
W. J. Richards
Keyword(s):  
Life History ◽  
Early Life ◽  
Developmental Stages ◽  
Early Life History ◽  
Fish Development ◽  
History Of

Reasons are given for using established and simplified terms and definitions for describing the developmental stages offish rather than new and complicated terms and definitions. There are many more important aspects of the study of the early life history of fish than developing terminologies for them.

scholarly journals Embryogenesis of climbing perch fish Anabas testudineus Bloch 1792 at incubation temperature of 28°C

2021 ◽  
Vol 869 (1) ◽  
pp. 012061
Author(s):  
R Rahmadi ◽  
A Syahril ◽  
F M Nur ◽  
S Maulida ◽  
Z A Muchlisin
Keyword(s):  
Embryonic Development ◽  
Early Life ◽  
Incubation Temperature ◽  
Early Life History ◽  
Fish Eggs ◽  
Phase 3 ◽  
Anabas Testudineus ◽  
Climbing Perch ◽  
Fish Breeding ◽  
History Of

Abstract Information on the embryonic development of fish is important to understand the early life history of fish, this information is useful for fish breeding, especially in crossbreeding and genetic engineering. Therefore, this study aimed to observe the process of embryonic development and the incubation time of climbing perch eggs which were incubated at a temperature of 28 °C. The results showed that the embryonic development of betok fish was divided into six phases, namely the cleavage phase (3 hours and 5 minutes), morula (4 hours and 30 minutes), blastula (5 hours, and 40 minutes), gastrula (8 hours, and 47 minutes), organogenesis (15 hours, and 39 minutes) and hatched. At an incubation temperature of 28 °C, the climbing perch fish eggs hatched 18 hours and 38 minutes after fertilization.Introduction

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