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Embryonic and larval development of Reciprocal Crosses between Clarias gariepinus (Burchell, 1822) and Clarias jaensis (Boulenger, 1909) in West Cameroon

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Agricultural Sciences 2024年第8期15卷 848-863页

作者： Justin Ntsoli Félix Meutchieye Algrient Nana Towa Donatien Bishakabalya Lwendje Minette Eyango Tabi Tomedi Biotechnology and Bioinformatics Research Unit Department of Animal Science University of Dschang FASA Dschang Cameroon Department of Forestry Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon Institute of Fisheries and Aquatic Sciences of the University of Douala Douala Bassa

Establishing intraspecific breeding and hybridization programs and determining genetic variability are two important issues for aquaculture. However, interspecific hybridization to improve growth and feeding efficiency is limited. For this purpose, the embryonic and larval development of reciprocal crosses of Clarias gariepinus (Burchell, 1822) and Clarias jaensis (Boulenger, 1909) were studied under laboratory conditions. The fertilization rate varied from 63.33% to 92%, while the hatching rate ranged from 55.68% to 76% with the highest value in hybrids ♀Cg × ♂Cj. Crosses between ♀Cj × ♂Cj, ♀Cg × ♂Cj and ♀Cj × ♂Cg had embryonic stages similar to those of the pure sib ♀Cg x ♂Cg. All crosses, however, had different timing for the various embryological stages. Hatching occurred at 32 h 15 min and 38 h for ♀Cj × ♂Cj and ♀Cj × ♂Cg, and 23 h and 23 h 30 min, respectively, for ♀Cg × ♂Cg and ♀Cg × ♂Cj. However, both crosses produced viable larvae until the first external feeding. The external morphological features of the larvae were completely formed by the 10th day after hatching. The body forms of the crosses at this time were indistinguishable from the pure sib. This study thus laid the groundwork for further comparative studies on hybrid performance and characterization.

关键词： Embryonic development larval development Interspecific Hybridization Clarias gariepinus Clarias jaensis

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The potential of ocean acidification on suppressing larval development in the Pacific oyster Crassostrea gigas and blood cockle Area inflata Reeve

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Chinese Journal of Oceanology and Limnology 2014年第6期32卷 1307-1313页

作者：李加琦蒋增杰张继红毛玉泽卞大鹏方建光 Mariculture Ecology and Carrying Capacity Laboratory Yellow Sea Fisheries Research InstituteChinese Academy of Fisheries Sciences National Engineering Research Center of Marine Shellfish

We evaluated the effect of pH on larval development in larval Pacific oyster(Crassostrea gigas) and blood cockle(Arca inflata Reeve).The larvae were reared at pH 8.2(control),7.9,7.6,or 7.3beginning 30 min or 24 h post *** to lower pH during early embryonic development inhibited larval shell formation in both *** with the control,larvae took longer to reach the D-veliger stage when reared under pH 7.6 and *** to lower pH immediately after fertilization resulted in significantly delayed shell formation in the Pacific oyster larvae at pH 7.3 and blood cockle larvae at pH 7.6 and ***,when exposure was delayed until 24 h post fertilization,shell formation was only inhibited in blood cockle larvae reared at pH ***,the early embryonic stages were more sensitive to acidified *** results suggest that ocean acidification will have an adverse effect on embryonic development in *** the effects appear subtle,they may accumulate and lead to subsequent issues during later larval development.

关键词： ocean acidification larval development bivalve calcifier

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The RNase III enzyme Dicer1 is essential for larval development in Bombyx mori

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Insect Science 2023年第5期30卷 1309-1324页

作者： Dongbin Chen Xu Yang Dehong Yang Yujia Liu Yaohui Wang Xingyu Luo Linmeng Tang Meiyan Yi Yongping Huang Yanqun Liu Zulian Liu Department of Sericulture College of Bioscience and BiotechnologyShenyang Agricultural UniversityShenyangChina Key Laboratory of Insect developmental and Evolutionary Biology Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina University of Chinese Academy of Sciences BeijingChina Guangzhou Key Laboratory of Insect development Regulation and Application Research Institute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhouChina

MicroRNAs(miRNAs)are important regulators of nearly all aspects of biological processes in *** the biogenesis of miRNAs,the RNase III enzyme Dicer processes double-strand precursor miRNAs into mature miRNAs and promotes the assembly of RNA-induced silencing complexes(RISCs).Dicer has been reported to participate in a wide range of physiological processes,including development and immunity,in some insect ***,the physiological roles of Dicer in lepidopterans remain poorly *** this study,we investigated the function of Bombyx mori *** first performed sequence alignment and found that the sequence of functional domains of Dicer1 are varied among Lepidoptera,Diptera,Coleoptera,Blattaria,and *** a binary clustered regularly interspaced palindromic repeats(CRISPR)/CRISPR-associated protein 9 genome editing approach,we showed that BmDicer1 mutants have arrested development from the 3rd instar into the 4th *** sequencing analysis indicated that the defects in BmDicer1 mutants are due to dysregulation of genes that encode proteins involved in metabolism,protein degradation,absorption,and renin–angiotensin *** using quantitative real-time polymerase chain reaction showed that mutation of BmDicer1 altered expression of miRNAs and their target ***,our study demonstrates the critical roles of BmDicer1 in miRNA biogenesis and larval development in silkworm.

关键词： Bombyx mori CRISPR/Cas9 Dicer1 larval development

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Using iTRAQ-Based Quantitative Proteomics Analysis to Identify Differentially Expressed Proteins Related to larval development of Portunus trituberculatus

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Journal of Ocean University of China 2021年第4期20卷 897-910页

作者： CHEN Xiayue MU Changkao LI Ronghua YE Yangfang SONG Weiwei SHI Ce LIU Lei WANG Huan WANG Chunlin Collaborative Innovation Center for Zhejiang Marine High-Efficiency and Healthy Aquaculture Ningbo UniversityNingbo 315211China Key Laboratory of Applied Marine Biotechnology Ministry of EducationNingbo UniversityNingbo 315211China

The swimming crab Portunus trituberculatus is an economically important marine crustacean *** isobaric tags for relative and absolute quantitation(iTRAQ)analysis were used to identify proteins that are differentially expressed during larval development of *** to elucidate the underlying *** comparison with the first zoea stage(Z1),3980 proteins were identified from 32789 peptides,which were matched with 115497 spectrums.A total of 241 proteins were screened with significantly differential expressions in all development *** 241 proteins are involved in various biological processes,such as cytoskeleton organization,protein synthesis,energy production and substance metabolism,physiological activities,and *** analyses of the 241 differentially expressed proteins led to the generation of four protein clusters based on the overall similarity in protein expression *** 54,70,36,and 45 proteins clustered in profiles 10(0,0,0,−1,0,0),15(0,1,0,1,0,1),18(0,1,2,2,1,0),and 19(0,1,2,3,4,5),*** development and exoskeleton renewal were important processes throughout the development *** addition,protein synthesis,degradation,and digestion actively occurred,especially at the Z4 *** results provide novel insights into the mechanisms underlying larval development of swimming crab and can assist in larval rearing.

关键词： Portunus trituberculatus iTRAQ proteomics larval development

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EFFECTS OF TEMPERATURE AND Ca^( 2+) ON THE larval development OF THE DECAPODA CRUSTACEAN: ERIOCHEIR SINENSIS

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Chinese Journal of Oceanology and Limnology 2001年第3期19卷 228-232页

作者：黄勃堵南山赖伟 DepartmentofFisheries HainanUniversityHaikou570228China DepartmentofBiology EastChinaNormalUniversityShanghai200062China

With increasing demand in China for the mitten crab larvae, understanding its survival mechanism gets more important. This research focused on the effects of temperature and Ca 2+ on the larval growth and development. Eriocheir sinensis larvae were reared in laboratory under 21 different combinations of temperature (15, 20, 25℃) and Ca 2+ content (120, 130, 140, 150, 160, 170, 180 mg/l) and constant salinity (20) and pH (8). The results suggested that the survival rate increases with temperature and Ca 2+ content. These combinations of temperature and Ca 2+ content maximized survival rate in our study and it may be the optimum water environmental conditions for culturing the larvae. To predict surviving larvae number under different water environmental conditions, 21 dynamic mathematical models were developed. This for the first time observation of the zoeal Ⅵ larvae of the Changjiang River E. sinensis population showed that they occurred under stressed water environmental conditions: temperature of 15℃ and Ca 2+ content of 120,130 mg/l.

关键词： Eriocheir sinensis larval development survival rate

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Comparison of larval development and pathological changes of Angiostrongylus cantonensis infection in permissive and nonpermissive rodent hosts

Comparison of larval development and pathological changes of...

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中国畜牧兽医学会兽医寄生虫学分会第一届青年科学家学术论坛

作者： Dongjuan Yuan Lisi OuYang Shiqi Luo Zhongdao Wu Lihua Xiao College of Veterinary Medicine South China Agricultural University Department of Parasitology Zhongshan School of MedicineSun Yat-sen University

Angiostrongylus cantonensis,an important zoonotic parasitic nematode,invades the central nervous system(CNS) of humans and mammals to induce eosinophilic meningitis and ***,humans and other mammals are nonpermissive host of ***-stage(L5) larvae on 28 days post infection(dpi) generally fail to complete the pulmonary migration to develop adult worm and remain in the human CNS until *** is the permissive host of ***.L5 larvae subsequently migrate to the rat pulmonary artery where they develop sexual maturity and release *** from mice showed smaller size of intracranial larvae as compared to worms from *** larvae mainly aggregated on cerebral surface of infected rats but on surface of cerebellum and brainstem in *** of transcriptomics data of L5 larvae showed that genes of cuticle collagen,reproductive development,and lipid metabolism and transport had higher expression in larvae from rats than those from *** rodent hosts,intracerebral hemorrhage and tissue edema on brain surface caused by worm migration appeared earlier and severer in infected mice than in rats.A cognitive impairment could be found in mice at 14 dpi but not in rats in a behavioral test for movement and motor ***-like lesions,perivascular cuffing of inflammatory cells,and dilated vessels within the cerebral cortex and hippocampus were more serious in mice than in rats at 21 *** mice suffered more serious pathological injuries than *** data showed activation of the extrinsic apoptotic pathway through increased expression of TNFR1 and caspase-8 in murine *** and double-labeling for NeuN and caspase-3 indicated a dramatically increased expression of caspase-3 in neurons of the cerebral cortex and hippocampus in mice but not in rats.A high expression of cleaved caspase-3 proteins was observed in *** of the study provide the molecular evidence

关键词： Angiostrongylus cantonensis larval development pathological changes eosinophilic meningitis

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欧洲伪叶甲Lagria hirta L.种群季节变化和幼虫生长发育(鞘翅目:伪叶甲科)(英)

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Insect Science 1996年第4期3卷 329-337页

作者：周红章中国科学院动物研究所北京 100080

欧洲伪叶甲Lagria hirta L.野外种群季节变化特点鲜明:成虫仅发生于6月底至8月初,幼虫除6月份外全年可见。基于野外观察和测量幼虫头宽,发现这种甲虫的生殖季节很短,在6至8月份;卵孵化后幼虫生长发育,在越冬前可达第3、4或5龄(个别达6... 详细信息

欧洲伪叶甲Lagria hirta L.野外种群季节变化特点鲜明:成虫仅发生于6月底至8月初,幼虫除6月份外全年可见。基于野外观察和测量幼虫头宽,发现这种甲虫的生殖季节很短,在6至8月份;卵孵化后幼虫生长发育,在越冬前可达第3、4或5龄(个别达6龄);幼虫越冬后,经过总共8—10龄,于6月份化蛹。冬季幼虫发育减慢但不完全停滞(非参数型中数检验,P<0.01)。这项研究改变了以前的观点,即认为该甲虫的幼虫发育只有4或5龄,同时也对这种甲虫的生命周期研究有促进作用。

关键词： seasonality larval development Lagria hirta

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Identification and molecular characterization of Cathepsin L gene and its expression analysis during early ontogenetic development of kuruma shrimp Marsupenaeusjaponicus

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Acta Oceanologica Sinica 2017年第6期36卷 52-60页

作者： QIAO Ying WANG Jun MAO Yong LIU Min SONG Xiaohong SU Yongquan WANG Chunzhong ZHENG Zhipeng State Key Laboratory of Marine Environmental Sciences Xiamen UniversityXiamen 361102China Putian Tian-ran-xing Agricultural development Co.Ltd. Fujian 351100China

Cathepsin L gene is a member of the cysteine proteinase gene group. In this study Cathepsin L gene was isolated from Kuruma shrimp Marsupenaeusjaponicus （Mj-Cathepsin L） and the full-length DNA sequence was 1 963 bp. Mj-Cathepsin L protein showed high homologies with other Cathepsin L proteins documented in vertebrates, mollusks and other crustaceans. Expression analysis of Mj-Cathepsin L gene in different tissues revealed that it was predominant in hepatopancreas. During early ontogenetic development stages Mj-Cathepsin L showed a development-regulated expression, and the Mj-Cathepsin L showed a molting stage-regulated expression during the five molting stages, inferring its role in the ontogenic development of ***. Two kinds of forms of Mj- Cathepsin L protein： pro-Cathepsin L and Cathepsin L were measured in hepatopancreas, stomach and intestine by Western Blotting.

关键词： Cathepsin L gene larval development molting cycle tissue distribution Marsupenaeusjaponicus

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Oviposition preference and larval performance of Epiphyas postvittana （Lepidoptera： Tortricidae） on Botrytis cinerea （Helotiales： Sclerotiniaceae） infected berries of Vitis vinifera （Vitales： Vitaceae）

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Insect Science 2016年第2期23卷 313-325页

作者： Syed Z. M. Rizvi Anantanarayanan Raman Warwick M. Wheatley Geoffrey Cook School of Agricultural & Wine Sciences Graham Centre forAgricultural Innovation Charles Sturt University Orange NSW 2800 Austrafia

In this paper we tested the behavior of gravid Epiphyas postvittana in select- ing the most-appropriate site for oviposition thus benefitting offspring performance. Our hypothesis was built on Jaenike＇s preference-performance hypothesis （also referred to as the ＂mother-knows-the-best＂ hypothesis）. To test this, we used the interacting Epiphyas postvittana, its host Vitis vinifera, and the pathogenic microbe Botrytis cinerea system. Populations ofE. postvittana and B. cinerea often exist concurrently on 14. vinifera in Aus- tralasia and their interaction and mutual influence are currently being explored, although the suggestion presently is that the relationship between E. postvittana and B. cinerea is mutualistic. We tested the effect of volatiles from B. cinerea-infected berries and unin- fected （control） berries of V. vinifera on the oviposition behavior of E. postvittana. We also characterized the effects of B. cinerea infection on the berries of V. vinifera on the growth and development of E. postvittana. Contrary to the preference-performance hy- pothesis, oviposition choices made by gravid E. postvittana did not result in the best offspring survival, development, and performance. The preference for oviposition by E. postvittana was strongly influenced by the olfactory and tactile cues. She laid fewer eggs on B. cinerea-infected berries compared to uninfected berries of V. vinifera. The larvae of E. postvittana showed no preference to uninfected berries of V. vinifera. The larvae fed on B. cinerea-infected berries of V. vinifera showing greater survival rate, shorter time to pupation, greater pupal mass, and on becoming adults they laid more numbers of eggs than the larvae that were enabled to feed on uninfected berries. The larvae of E. postvittana transport the conidia of B. cinerea and transmit grey-mould disease to uninfected berries of V. vinifera.

关键词： larval development life-history performance light-brown apple moth ovipo-sition preference preference-performance hypothesis grapevine

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Phospholipid Compositions in Portunus trituberculatus Larvae at Different developmental Stages

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Journal of Ocean University of China 2022年第1期21卷 152-162页

作者： LU Zhibin SHI Ce LIU Lei MU Changkao YE Yangfang WANG Chunlin Key Laboratory of Applied Marine Biotechnology Ningbo UniversityChinese Ministry of EducationNingbo 315211China Collaborative Innovation Center for Zhejiang Marine High-Efficiency and Healthy Aquaculture Ningbo 315211China

Phospholipids are used to improve the growth and survival of Portunus trituberculatus,a widely cultured crab species in ***,only total phospholipids or several classes are applied in crab *** this study,we employed a targeted lipidomic method to investigate the comprehensive phospholipid composition in *** larvae and reveal the changing phospholipid profile over the larval *** showed that *** larvae contain 112 phospholipid species belonging to 10 phospholipid classes,in which phosphatidylcholine(PC)and phosphatidylethanolamine(PE)species are the most abundant,and PC,PE,phosphatidic acid,and phosphatidylserine(PS)are with high *** levels of all phospholipids significantly changed with larval development,which was highlighted by the downward parabolic changes in PE,phosphatidylglycerol,phosphatidylino-sitol,PS,lysophosphatidic acid,and sphingomyelin *** addition,nearly all phospholipid species were depleted at the M stage,which probably contributed to the mass mortality of crab *** findings on the composition and alterations of phospholipids in *** larvae provide novel perspectives for the targeted supplementation of phospholipids in crab *** work also highlights the use of targeted UHPLC-MS lipidomics in understanding the changes of phospholipids during crab development.

关键词： Portunus trituberculatus larval development phospholipid UHPLC-MS

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