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Effects of salinity on growth and related indicators of gonadal development in Exopalaemon carinicauda (Decapoda, Caridea, Palaemonidae) 盐度对carinicauda(十足目、Caridea、Palaemonidae)生长及性腺发育相关指标的影响
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-06-16 DOI: 10.1163/15685403-bja10295
Zhiyu Pang, Zhenhui Zhao, Jiayi Gao, D. Deng, Kangyu Deng, Jing Xu, Huan Gao
To explore the effects of salinity on the growth and gonadal development of Exopalaemon carinicauda, shrimps were raised at five different levels of salinity (16, 20, 24, 28, 32) in a water environment. The growth, performance in ovarian development, ovarian nutrient concentration, as well as vitellogenin and sex hormone levels were measured. The results showed that the final body weight and specific growth rate of E. carinicauda increased at first and then decreased with increasing salinity (), with the fastest growth occurring at salinity 24. The gonadosomatic index increased at first and then decreased with increasing salinity (), with the highest index also occurring at salinity 24. The ovarian maturation rate of E. carinicauda was highest at salinity 28, and the concentration of total protein, total cholesterol, and triglycerides in the ovaries similarly increased at first until salinity 24, and then decreased with increasing salinity (). Likewise, the concentration of vitellogenin in the hepatopancreas increased at first and then decreased with increasing salinity (), with the highest concentration occurring at salinity 24. The concentration of estradiol in E. carinicauda ovaries was highest in the groups at salinities 24 and 28. These results show that salinity levels of 24-28 were the most suitable for promoting the maturation of parent shrimps, and thus would likely be optimal for industrial culturing.
为了探讨盐度对卡氏异蛛生长和性腺发育的影响,在水环境中饲养了5种不同盐度(16、20、24、28、32)的虾。测量生长、卵巢发育、卵巢营养素浓度以及卵黄蛋白原和性激素水平。结果表明,随着盐度的增加,卡氏锥虫的最终体重和比生长速率先增加后降低(),其中盐度24时生长最快。性腺体指数随盐度的增加先增加后降低(),最高指数也出现在盐度24时。在盐度28时,卡氏锥虫的卵巢成熟率最高,卵巢中总蛋白、总胆固醇和甘油三酯的浓度最初也类似地增加,直到盐度24,然后随着盐度的增加而降低()。同样,肝胰腺中卵黄蛋白原的浓度随着盐度的增加先增加后降低(),最高浓度出现在盐度24时。在盐度为24和28的组中,carinicauda卵巢中的雌二醇浓度最高。这些结果表明,24-28的盐度水平最适合促进亲虾的成熟,因此可能是工业养殖的最佳盐度。
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引用次数: 1
Corrigendum to: “Body length, dry and ash-free dry weights, and developmental changes at each copepodid stage in five sympatric mesopelagic aetideid copepods in the western Arctic Ocean” (DOI: 10.1163/15685403-bja10272) 更正:“北冰洋西部五种同域中远洋桡足类桡足类各阶段的体长、干重和无灰干重和发育变化”(DOI: 10.1163/15685403-bja10272)
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-06-16 DOI: 10.1163/15685403-bja10298
Yunosuke Koguchi, Koki Tokuhiro, C. Ashjian, R. Campbell, Atsushi Yamaguchi
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引用次数: 0
Changes during early copepodid development of podoplean copepods: common ancestry or convergence 足足类桡足类早期发育过程中的变化:共同祖先或趋同
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-06-16 DOI: 10.1163/15685403-bja10290
F. Ferrari, J. C. von Vaupel Klein
Examples are given of parasitic podopleans that change behaviour, and often morphology, between the first and second copepodid stages. The first copepodid is free-swimming, dispersive and infective; the second copepodid is found attached to or within its host and usually has undergone changes in morphology. Among free-living podopleans, changes in behaviour but not morphology are documented. Strengths and weaknesses of different evolutionary explanations are considered for these changes, including descent from a common free-living ancestor, convergences from several free-living ancestors, or a mixed model. More observations of free-living podopleans, like harpacticoids and cyclopoids, closely associated with the benthos, would be particularly valuable in testing each explanation.
在桡足动物的第一阶段和第二阶段之间,寄生的足类动物会改变行为,通常还会改变形态。第一种桡足动物是自由游动的,具有分散性和传染性;第二种桡足动物附着在宿主身上或在宿主体内,通常在形态上发生变化。在自由生活的矮人猿中,行为上的变化而不是形态上的变化被记录下来。对于这些变化,考虑了不同进化解释的优点和缺点,包括来自一个共同的自由生活祖先的后裔,来自几个自由生活祖先的收敛,或者一个混合模型。更多对自由生活的足类动物的观察,如与底栖动物密切相关的羽管类和cyclopoids,将对检验每一种解释都特别有价值。
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引用次数: 0
Seasonal variation in the land hermit crab, Coenobita rugosus H. Milne Edwards, 1837 (Decapoda, Anomura) and a preliminary study of land hermit crabs as a bioindicator of turtle nesting at Penghu County Wang-An Island green turtle nesting refuge, Taiwan 陆栖隐蟹的季节变化,Coenobita rugosus H.Milne Edwards,1837(Decapoda,Anomura)和台湾澎湖县望安岛绿龟筑巢保护区陆栖隐螃蟹作为海龟筑巢生物指标的初步研究
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-06-16 DOI: 10.1163/15685403-bja10296
C. Hsu, W. Fang, Bing-Rong Jiang, Lei Chai, Wei-Cheng Kao, Tsung-Shun Huang
The present study surveyed the land hermit crab species, body size, shell type, and shell suitability, at five sites over four seasons in the Penghu County Wang-an Island Green Turtle Nesting Refuge. Coenobita rugosus H. Milne Edwards, 1837 was the only species recorded and found at three sites (Tiantai Hill, Xi’an Reservoir, and Tudigong). The density index of hermit crabs exhibited notable variations across the sites, showing no significant variation with the changing seasons. The bush habitat displayed a higher density index compared to the sand habitat. Additionally, the sites differed significantly in terms of the shell type and body size of the hermit crabs. Further, no significant relationship was established between abundance and weather factors or between crab abundance and sea turtle nesting. This investigation is a preliminary examination of the possibility of land hermit crabs being used as bioindicators for breeding of sea turtles.
本研究对澎湖县王安岛绿龟筑巢保护区4个季节5个地点的陆地寄居蟹种类、体型、壳型和壳适宜性进行了调查。Coenobita rugosus H. Milne Edwards, 1837年是唯一在天台山、西安水库和土土公三个地点有记录和发现的物种。寄居蟹密度指数随季节变化不显著,但在不同地点间存在显著差异。灌木生境的密度指数高于沙地生境。此外,这些地点在寄居蟹的壳类型和体型方面存在显著差异。此外,蟹的丰度与天气因素、蟹的丰度与海龟的筑巢没有显著的关系。本研究是对陆地寄居蟹作为海龟繁殖生物指示物的可能性进行初步探讨。
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引用次数: 0
Estimation of genetic parameters for proximate composition traits in the muscle of the Chinese mitten crab, Eriocheir sinensis H. Milne Edwards, 1853 (Brachyura, Varunidae) 中华绒螯蟹,Eriocheir sinensis H. Milne Edwards, 1853(腕足目,Varunidae)肌肉近似组成性状的遗传参数估计
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-05-17 DOI: 10.1163/15685403-bja10294
Guang-Bao Zhang, Wu Jin, Dong-Dong Zhang, Zhen-Jun Zhuang, Qing Liu, Xugan Wu
This study examined the heritability and genetic correlations of muscle proximate composition (including crude lipid, protein, moisture, and ash) in the Chinese mitten crab, Eriocheir sinensis. The results showed that the heritability of proximate composition traits, was 0.12 ± 0.07 for moisture, 0.04 ± 0.04 for crude fat, 0.07 ± 0.05 for crude protein and 0.03 ± 0.04 for ash, respectively. A positive genetic correlation (0.88) was observed between crude lipid and protein, whereas a negative correlation existed between crude lipid and moisture (−0.74), indicating that crude lipid content could be improved by moisture selection indirectly. The muscle-moisture trait has the highest heritability, and is the easiest parameter to measure among the four proximate composition traits. Our results provide fundamental information for the development of improved genetic-programmes utilizing quality traits of E. sinensis.
本文研究了中华绒螯蟹(Eriocheir sinensis)肌肉近似成分(包括粗脂肪、蛋白质、水分和灰分)的遗传性和遗传相关性。结果表明:水分、粗脂肪、粗蛋白质和灰分的近似遗传力分别为0.12±0.07、0.04±0.04、0.07±0.05和0.03±0.04。粗脂肪与蛋白质呈显著正相关(0.88),而粗脂肪与水分呈显著负相关(- 0.74),说明水分选择可以间接提高粗脂肪含量。肌肉水分性状遗传力最高,是4个近似组成性状中最容易测量的参数。本研究结果为开发利用中华香椿品质性状的改良遗传方案提供了基础信息。
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引用次数: 0
The genus Metamysidopsis W. M. Tattersall, 1951 (Peracarida, Mysida, Mysidae) in the eastern Pacific with the description of a new species from western Mexico and notes on some diagnostic characters used in the genus 东太平洋的Metamysidopsis属W.M.Tattersall,1951(Peracarida,Mysida,Mysidae),描述了墨西哥西部的一个新种,并注意到该属的一些诊断特征
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-05-17 DOI: 10.1163/15685403-bja10293
M. Hendrickx, J. Hernández-Payán
The genus Metamysidopsis W. M. Tattersall is currently represented by two species in the eastern Pacific: M. elongata (Holmes, 1910) in California, U.S.A., and M. pacifica (Zimmer, 1918) in Peru and Panama. The distribution and some morphological details of both species are presented and discussed and a new species is described from the southern Gulf of California, western Mexico. Commonly used diagnostic characters for the species of Metamysidopsis are analysed based on data available in the literature. A diagnosis is provided for the three species occurring in the eastern Pacific and a key to the 10 currently known species of the genus is provided.
Metamysidopsis W.M.Tattersall属目前在东太平洋有两个物种:美国加利福尼亚州的M.elongata(Holmes,1910)和秘鲁和巴拿马的M.pacifica(Zimmer,1918)。介绍和讨论了这两个物种的分布和一些形态细节,并描述了一个来自墨西哥西部加利福尼亚湾南部的新种。基于文献中可用的数据分析了Metamysidopsis物种的常用诊断特征。对发生在东太平洋的三个物种进行了诊断,并提供了该属目前已知的10个物种的关键。
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引用次数: 1
Eriocheir hepuensis Dai, 1991 (Brachyura, Grapsoidea, Varunidae, Varuninae): reporting the southerly distribution to northern Vietnam 河豚,1991(河豚目,河豚科,河豚科):报告南向越南北部分布
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-05-17 DOI: 10.1163/15685403-bja10288
P. Clark, V. T. Ngo, N. Ng, Lydia X. Gan, S. Kamanli, P. Ng
Eriocheir hepuensis Dai, 1991, the Hepu mitten crab, is here formally reported from Thanh Hoa and Quang Ninh Provinces, northern Vietnam. Previous reports of “E. sinensis” and “E. japonicus” from “Cua lông”, Thai Binh Province, northern Vietnam, require clarification, are probably misidentifications of E. hepuensis, and highlight the problems of species identification within Eriocheir. The taxonomy of E. hepuensis is also discussed.
Eriocheir hepuensis Dai, 1991,合浦绒螯蟹,在这里正式报告来自越南北部清化省和广宁省。之前关于“E。“sinensis”和“E。来自越南北部泰平省“Cua lông”的japonicus“需要澄清,可能是E. hepuensis的误认,并突出了Eriocheir中物种鉴定的问题。文中还讨论了河豚的分类。
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引用次数: 0
Influence of different feeding rates of polychaete worms, Eulalia viridis (Annelida, Polychaeta), on the gonad development of male Penaeus semisulcatus (Decapoda, Dendrobranchiata) under captive conditions 人工饲养条件下,不同饲养率的绿色Eulalia viridis(Annelida,Polychaeta)对雄性半溃疡对虾(Decapoda,Dendrobranchiata)性腺发育的影响
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-05-17 DOI: 10.1163/15685403-bja10287
C. Harini, C. J. Betsy, P. S. Dattatreya, J. S. Sampath Kumar
Penaeus semisulcatus is a large growing species, attaining a maximum size of about 250 mm in total length. It is more resistant to white spot syndrome virus (WSSV) than other cultivable penaeid shrimps, which makes it a potential candidate for culture. The present study evaluated the influence of a different feeding rate of polychaete worms on the gonad development of male P. semisulcatus under captive conditions. P. semisulcatus sub-adults were obtained in the wild. The shrimps were fed with three different concentrations of polychaete worms, viz., ad libitum (T1), 5% of body weight (BW) (T2) and 10% BW (T3), and fresh sardines were fed as a Control (C) diet, all for a period of 60 days. Sampling was done once in 15 days and the bio-growth parameters were recorded. The gonads were harvested for histological analysis. The maximum weight gain (10.19 g), mean weight gain percentage (85.20%), mean daily growth rate (DGR) (0.169833) and mean specific growth rate (SGR) (0.45) were found in shrimps fed with the polychaete worm diet at 5% BW. The estimated bio-growth parameter values were statistically significant when analysed using One way ANOVA (). Histological sections of the testis showed variations in the development of the gonad between the treatments with different feeding rates during the 60 days trials. Indeed in all aspects, the development was higher in shrimps fed with polychaete worms at 5% BW. It can be concluded that feeding polychaete worms at 5% BW created a regime able to improve growth rates, gonad maturation, and quality in the development of the captive male brood stock.
半沟对虾是一种大型生长物种,最大体型约为250毫米。与其他可养殖对虾相比,它对白斑综合征病毒(WSSV)具有更强的抵抗力,这使它成为一种潜在的养殖候选者。本研究评估了圈养条件下不同的多毛类蠕虫喂养率对雄性半溃疡P.性腺发育的影响。半溃疡P.亚成体是在野外获得的。用三种不同浓度的多毛类蠕虫喂养虾,即随意(T1)、5%体重(T2)和10%体重(T3),并将新鲜沙丁鱼作为对照(C)日粮喂养,所有时间均为60天。每15天取样一次,并记录生物生长参数。采集性腺进行组织学分析。在5%体重下,用多毛类蠕虫饲料喂养的虾的最大增重(10.19g)、平均增重百分比(85.20%)、平均日生长率(DGR)(0.169833)和平均比生长率(SGR)(0.45)。使用单向方差分析(),估计的生物生长参数值具有统计学意义。睾丸的组织学切片显示,在60天的试验中,不同喂养率的处理之间性腺发育的变化。事实上,在所有方面,用5%体重的多毛类蠕虫喂养的虾的发育都更高。可以得出的结论是,在圈养雄性繁殖种群的发育过程中,用5%重量的多毛类昆虫喂养创造了一种能够提高生长速度、性腺成熟度和质量的机制。
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引用次数: 0
Redescription of Triceracolax chrysophryenus (Roubal, Armitage & Rohde, 1983) (Copepoda, Cyclopoida, Bomolochidae) recovered from Pagrus major (Temminck & Schlegel, 1843) (Actinopterygii) in Japan, with the description of its copepodid IV 重新描述在日本发现的Pagrus major (Temminck & Schlegel, 1843) (Actinopterygii)中发现的Triceracolax chrysophryus (Roubal, Armitage & Rohde, 1983)(桡足目,Cyclopoida, bomolochidus科)及其桡足类IV
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-05-17 DOI: 10.1163/15685403-bja10280
K. Izawa
Triceracolax chrysophryenus (Roubal, Armitage & Rohde, 1983) is redescribed based on specimens of both sexes, recovered from the nasal cavity of the red sea bream, Pagrus major (Temminck & Schlegel, 1843) (Perciformes, Sparidae) in Japan. Leg 1 exopod of the female of the species is recognized to be 2-segmented.
根据从日本红鲷Pagrus major (Temminck & Schlegel, 1843) (Perciformes, Sparidae)的鼻腔中发现的两性标本,对chrysophryus (Roubal, Armitage & Rohde, 1983)进行了重新描述。该物种雌性的1腿外足被认为是2节的。
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引用次数: 0
A comment on Williams & Bunkley-Williams (2023): the reported organisms were not turtle barnacles 对Williams & Bunkley-Williams(2023)的评论:报告的生物不是龟藤壶
IF 0.6 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Pub Date : 2023-05-17 DOI: 10.1163/15685403-bja10291
Ryota Hayashi
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引用次数: 0
期刊
Crustaceana
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