Academic literature on the topic 'Species caridina'
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Journal articles on the topic "Species caridina"
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Cai, Yixiong. "Species of Caridina nilotica group in China, with description of one new species (Crustacea, Decapoda, Atyidae)." Crustaceana 93, no. 11-12 (November 25, 2020): 1405–22. http://dx.doi.org/10.1163/15685403-bja10086.
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Abstract The atyid shrimps of Caridina nilotica species group from China are reviewed. Taxonomic diagnosis and discussions are given to three species so far known from China, viz. Caridina gracilipes De Man, 1892, Caridina macrophora Kemp, 1918 and Caridina elongapoda Liang & Yan, 1977. Detailed morphological description and illustrations are provided for a new species. Caridina sheni sp. nov. is morphologically similar to C. gracilipes but could be distinguished by its much longer dactylus of third and fifth pereiopods, and lower number of ventral rostral teeth.
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CHEN, QING-HUA, WEN-JIAN CHEN, and ZHAO-LIANG GUO. "Caridean prawn (Crustacea, Decapoda) from Dong'ao Island, Guangdong, China." Zootaxa 4399, no. 3 (March 21, 2018): 315. http://dx.doi.org/10.11646/zootaxa.4399.3.2.
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The present study, based on a faunistic and ecological survey of caridean shrimps from Dong’ao Island, Guangdong Province, expands the knowledge of morphology, colouration, and distribution of three species, two of which belong to genus Caridina and one belong to genus Marcrobrachium. Caridina zhujiangensis, new species is distinguished from the closely related species C. typus H. Miline Edwars,1837 by shorter rostrum and with only one ventral margin teeth, the shape of the endopod of the first male pleopod and the appendix interna arising from distal 1/3 of endopod. Macrobrachium dongaoensis, new species, can be distinguished from its congeners M. inflatum Liang & Yan, 1985 by a combination of characters which includes short rostrum, the subequal male second pereiopods, the non–inflated palm, and the longer merus. A diagnosis of three speciesmore and full description of two new species are presented.
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CAI, YIXIONG. "Caridina jeani, a replacement name for Caridina typus var. brevirostris J. Roux, 1911 from Eastern Indonesia (Crustacea: Decapoda: Atyidae)." Zootaxa 2372, no. 1 (February 26, 2010): 80–84. http://dx.doi.org/10.11646/zootaxa.2372.1.10.
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Caridina typus var. brevirostris Roux is shown to be specifically different from Caridina typus H. Milne Edwards, 1837. A new name Caridina jeani is thus proposed for the species as the name Caridina brevirostris is preoccupied by C. brevirostris Stimpson, 1860. The species is re-described and illustrated in detail based on syntypic specimens. It differs markedly from Caridina typus by possessing sexual dimorphism on the third and fourth pereiopods. A lectotype is designated.
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Annawaty, Annawaty, Nur Hidayah E. Lapasang, Puji Rahayu, Hairul Hairul, Fazlur Rahman I. Tadeko, and Diky Dwiyanto. "Checklist of the freshwater shrimps (Crustacea, Decapoda, Caridea) from the Banggai Archipelago, Central Sulawesi, Indonesia." Check List 18, no. 2 (April 6, 2022): 341–55. http://dx.doi.org/10.15560/18.2.341.
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The mainland of Sulawesi is well known for its high diversity of freshwater shrimps. However, many small islands surrounding Sulawesi have been neglected and have not been unexplored. Here, we report on the freshwater shrimps of the Banggai Archipelago, eastern Sulawesi, based on field collections between 2017 and 2019 on four islands, Peleng, Labobo, Bangkurung, and Banggai. Eleven species were found: Caridina brevidactyla J. Roux, 1920, Caridina brevicarpalis De Man, 1892, Caridina gracilipes De Man, 1892, Caridina gracilirostris De Man, 1892, Caridina serratirostris De Man, 1892, Caridina typus H. Milne Edwards, 1837, Caridina weberi De Man, 1892, Macrobrachium australe (Guérin-Méneville, 1838), Macrobrachium equidens (Dana, 1852), Macrobrachium lar (Fabricius, 1798), and Macrobrachium latidactylus (Thallwitz, 1891). One species, C. brevidactyla, is a newly recorded from Sulawesi. Knowledge of the diversity of the freshwater shrimp fauna can contribute to the conservation of species and their habitats.
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Page, Timothy J., Kristina von Rintelen, and Jane M. Hughes. "Phylogenetic and biogeographic relationships of subterranean and surface genera of Australian Atyidae (Crustacea : Decapoda : Caridea) inferred with mitochondrial DNA." Invertebrate Systematics 21, no. 2 (2007): 137. http://dx.doi.org/10.1071/is06023.
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The biogeographic and phylogenetic relationships of six of the eight Australian genera of freshwater shrimp from the family Atyidae were investigated using mitochondrial 16S rDNA and cytochrome oxidase I sequences. Previous studies on two of the epigean genera (Caridina, Paratya) indicate that Australian species have strong links to congenerics from outside, with Australian members of Paratya being monophyletic and Caridina polyphyletic. The present study found that the endemic Australian epigean genus Australatya forms a strong clade with Pacific ‘Atya-like’ genera (Atyoida, Atyopsis), and that the endemic Australian epigean genus Caridinides falls within a clade containing Caridina species from the Australian ‘indistincta’ group. The two hypogean genera included in this study (Parisia, Pycnisia) form a strong clade in all analyses, implying an Australian subterranean speciation. The possibility of a relationship between Parisia/Pycnisia and an Australian Caridina species may have implications for the monophyly of the highly disjunct genus Parisia (Australia, Madagascar, Philippines). Parisia may descend from local Caridina species and represent convergent morphologies.
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RICHARD, JASMINE, and PAUL F. CLARK. "Caridina H. Milne Edwards, 1837 (Crustacea: Decapoda: Caridea: Atyoidea:Atyidae) – freshwater shrimps from eastern and southern Africa." Zootaxa 2372, no. 1 (February 26, 2010): 305–37. http://dx.doi.org/10.11646/zootaxa.2372.1.24.
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Since the study of Richard and Clark (2009), additional material of Caridina africana Kingsley, 1882 has been examined and as a consequence C. nilotica var. paucipara Weber, 1897 is considered to be a junior synonym of C. africana. Material of Caridina serratirostris De Man, 1892, C. angulata Bouvier, 1905, C. brachydactyla De Man, 1908 and C. moeri Woltereck, 1984 is reported, and redescribed. Caridina serratirostris and C. angulata are reported for the first time from the African mainland, both species being previously known from Madagascar. The first record of C. brachydactyla from the African continent is also noted. Furthermore, Caridina nilotica var. natalensis De Man, 1908 and Caridina nilotica var. brevidactyla J. Roux, 1920 are considered to be junior synonyms of C. brachydactyla. Part of the type series of C. brachydactyla was examined for the present study and this material together with the description and figures of the rostrum illustrated by De Man (1892) as Caridina wyckii appear to be three different species: C. brachydactyla s. str. and probably two new species. These are not described due to lack of additional material available for study. However, two new African species are described and an identification key is provided.
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GUO, ZHAO-LIANG, and XIAO-QING WANG. "Caridina longiacuta, a new species of freshwater atyid shrimp (Decapoda, Atyidae) from Hunan Province, China." Zootaxa 1008, no. 1 (June 14, 2005): 13. http://dx.doi.org/10.11646/zootaxa.1008.1.2.
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A new atyid species, Caridina longiacuta, is described and illustrated from Hunan Province, China. Caridina longiacuta is characterized by its long rostrum, long finger-like process on the anterolateral angle of basal antennular segment, the narrow scaphocerite, the segmental ratios of third maxilliped, the shape and spination of its posterior telsonic margin, and small eggs. Also, Caridina cantonensis Yu, 1938 is reported from Hunan Province for the first time.
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WANG, LIQING, XIANGQIU LIANG, and FAN LI. "Descriptions of four new species of Caridina (Decapoda: Atyidae) from China." Zootaxa 1726, no. 1 (March 12, 2008): 49. http://dx.doi.org/10.11646/zootaxa.1726.1.4.
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Four new species, Caridina maculata sp. nov., C. venusta sp. nov.,C. tumida sp. nov. and C. meridionalis sp. nov. are described from Guangdong Province, China. Caridina maculata sp. nov. and C. venusta sp. nov. are popular in the commercial pet markets as ornamental shrimp.
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CHOY, SATISH, TIMOTHY J. PAGE, VALENTIN DE MAZANCOURT, and BENJAMIN MOS. "Caridina malanda, a new species of freshwater shrimp (Crustacea: Decapoda: Atyidae) from the Wet Tropics World Heritage area, north–eastern Queensland, Australia." Zootaxa 4652, no. 1 (August 7, 2019): 113–25. http://dx.doi.org/10.11646/zootaxa.4652.1.5.
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Integrated molecular and morphological studies of newly collected and curated specimens of the genus Caridina from the Atherton Tablelands, Wet Tropics World Heritage Area in north–eastern Queensland, Australia indicated the presence of an undescribed species belonging to the Caridina zebra Short 1993 complex. This species is somewhat intermediate, although distinct on the basis of molecular data and morphology, from two known sympatric species, Caridina zebra and C. confusa Choy & Marshall 1997, and an allopatric species, C. spinula Choy & Marshall 1997, from the Cape York Peninsula, about 500 km north. It is described here as a new species, C. malanda sp. nov., and compared with similar congeners. A key for the identification of the species, as well as notes on its distribution, ecology, and conservation, are provided.
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PANDYA, PRANAV J., and JASMINE RICHARD. "Report of Caridina babaulti Bouvier, 1918 (Crustacea: Decapoda: Caridea: Atyidae) and description of a new species Caridina kutchi sp. nov. from Gujarat, India." Zootaxa 4568, no. 3 (March 21, 2019): 470. http://dx.doi.org/10.11646/zootaxa.4568.3.3.
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This study aims to report the freshwater shrimps of the genus Caridina H. Milne Edwards, 1837, from the Indian state of Gujarat, which has a unique landscape and climatic conditions that form a significant environment for biological studies. Caridina babaulti Bouvier, 1918, is re-described with type specimens and fresh collections from Shetrunji River, Saurashtra Peninsula. Caridina kutchi sp. nov., is described from Khari River, Kutch Peninsula.
Dissertations / Theses on the topic "Species caridina"
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Al-Saadi, Amaal Ghazi Yasser. "Ecological divergence of cryptic species of the atyid freshwater shrimps: Caridina indistincta and Paratya australiensis species complexes at different spatial scales in South-East Queensland, Australia." Thesis, Griffith University, 2020. http://hdl.handle.net/10072/391077.
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Freshwater ecosystems represent hotspots for the world’s total diversity and human well-being. However, they are also subjected to threats across the globe as a result of localised human activities, broad scale catchment clearance, climate change and invasive species. The increased degradation of freshwater habitats and their ecological functions as a consequence of these threats, at local and global scales, has led to significant freshwater problems for human existence and the world’s biodiversity. There is growing evidence that the loss of biodiversity is one of the most complex environmental issues facing the world; however, the importance of understanding species distribution patterns and the ecological differentiation among species that are reflected as species-specific responses or tolerances to environmental drivers is less well understood. In particular, when a morphological approach is used as a taxonomic tool for investigating species diversity and species level responses to environmental drivers, the diversity of responses hidden within species complexes may not be realized, and the conclusion of generality may mask specific cryptic species responses.
In South-East Queensland, Australia, European occupation since the mid 1800’s has seen large scale clearing of native vegetation along streams and rivers in nearly all catchments. As a consequence of this land-use change catchment hydrology has been substantially altered, which, combined with the presence of dams and weirs, has resulted in a decline in water quality of streams in some catchments, which is of growing concern for conservation of species biodiversity. This study aimed to explore cryptic diversity in two species complexes of freshwater aytid shrimps common in South-East Queensland and elucidate species level responses to environmental variation that could explain their spatial distribution. This broad aim was met through three specific studies.
First, using regional scale data of cryptic species diversity and water quality, the importance of species-specific responses to environmental conditions in determining spatial distribution patterns and environmental relationships of cryptic species in the Caridina indistincta and Paratya australiensis species complexes was examined. To accomplish this aim, DNA sequences were used to identify shrimp specimens from 89 sites in 17 catchments spanning the study area. In addition, an assessment of eight morphological traits was used to test whether these cryptic species could be morphologically identified. Use of these eight traits did allow species level identification, at least in South-East Queensland. However, caution is suggested in the use of these morphological traits for recognising species, due to the probability of morphological plasticity within a species across broad spatial scales. Ordination analysis of presence-absence data showed that the five cryptic species within the two species complexes showed spatially distinct distributions across streams in SEQ, with each cryptic species displaying different relationships with individual environmental variables. For species in the Caridina indistincta complex, C. indistincta sp. B was significantly associated with elevation, C. indistincta sp. D was significantly correlated with dissolved oxygen range, whilst, individuals of C. indistincta sp. A were negatively associated with elevation and dissolved oxygen range. This may indicate that C. indistincta sp. A tended to inhabit sites with low elevation and perhaps having a higher tolerance to a low range of dissolved oxygen. For the Paratya australiensis species complex, P. australiensis lineage 4 and 6 showed significant correlations with elevation and conductivity, respectively.
The second broad aim of the study was to explore these spatial patterns at smaller geographical scales and with greater detail about water quality to understand and quantify the fundamental environmental factors (e.g., physical chemical water parameters and concentrations of heavy metals) that are potentially shaping the current distribution patterns and abundance of cryptic species within the two species complexes. To explore this aim, sediment samples from 22 sites in 13 catchments in SEQ were analysed to determine concentrations (mg/kg dry weight) of 11 heavy metals. Additionally, a number of water quality variables were measured in situ, including: elevation, stream width, stream temperature, dissolved oxygen, conductivity, pH, total dissolved solids, and turbidity. Also, a water sample was taken from each site for laboratory analysis of: Ammonium nitrogen (NH4-N), Dissolved oxidized nitrogen (Nitrate+Nitrite) (NOX-N), Total nitrogen (TN), Total kjeldahl nitrogen (TKN), Total kjeldahl phosphorus (TKP), Orthophosphate-P (PO4-P). Shrimps were collected from each site and identified to species using both morphology and DNA sequencing. The morphological identification of each adult individual (except juveniles which were genetically analysed) was used as a measure of absolute abundance and the genetic ‘checking’ of a set number of individuals in each sample was used to compute relative abundance. Redundancy analysis (RDA) showed that the spatial distribution and absolute and relative abundance of C. indistincta sp. D and sp. B were significantly positively influenced by elevation, while the relative abundance of P. australiensis Lin.6 was significantly positively affected by the concentration of manganese (Mn). Stream Total nitrogen (TN) was significantly positive driver of the spatial distribution and relative abundance of C. indistincta sp. A, while Orthophosphate-P (PO4-P) was significantly positive driver for the absolute and relative abundance of this species. Further analysis, this study confirms that P. australiensis Lin.6 was more tolerant of heavy metal concentrations compared with other cryptic species, as its distribution and absolute and relative abundance were significantly positively correlated with the concentrations of manganese, iron and cobalt. In contrast, C. indistincta sp. A was more sensitive to these metals than other study species. These results demonstrated that cryptic species of freshwater atyid shrimps of the C. indistincta and P. australiensis species complexes were different in their environmental requirements. As well, the cryptic species of both complexes were identified to have different associations with heavy metal concentrations, indicating that these species were different in their tolerance to toxicants.
Finally, the third aim of the study was to further examine the differences in sensitivity to heavy metals (Copper and Zinc) among cryptic species of the two study complexes experimentally in the laboratory. Two cryptic species of each complex were used as study species, C. indistincta sp. A and sp. D and P. australiensis Lin.4 and Lin.6. The field studies showed differences among these species in their correlations with metal concentrations, and therefore they were seen as good candidate species for testing differences in the sensitivity to metal toxicants. Each cryptic species was exposed to six concentrations of each metal Cu or Zn using an acute (96-h) toxicity test. The results from this study were generally showed contrasting correlation between species and heavy metals; P. australiensis Lin.6 was the most tolerant species to both study metals, while C. indistincta sp. A was more sensitive to copper, and C. indistincta sp. D was more sensitive to Zn compared with the other tested species. Furthermore, the exposure of individuals of each species to the heavy metals caused changes in both their behaviour and their colour during exposure time.
Overall, this study has shown cryptic species within broad species complexes can vary in their spatial distribution and their tolerance and response to water quality parameters. This highlights the advantage of using analyses of biotic and abiotic variables for ecological management and biodiversity conservation and the need to understand true species diversity when looking at species level responses to environmental degradation.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environment and Sc
Science, Environment, Engineering and Technology
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Page, Timothy J., and n/a. "An Evolutionary History of the Freshwater Shrimp Family Atyidae in Australia." Griffith University. Australian School of Environmental Studies, 2007. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20070725.120145.
Full textAbstract:
The aim of this thesis is to use phylogenetic analyses of mitochondrial DNA to investigate the biogeography and evolutionary relationships within the freshwater shrimp family Atyidae in Australia at a nested series of scales, both geographic and systematic. At the largest scale, the relationships between Australian and Indo-West Pacific species were inferred using the two most common atyid genera in Australia, Caridina and Paratya. Most atyids are hypothesised to have colonised Australia from Southeast Asia, but Paratya may be a Gondwanan relict given its distribution. Australian Paratya all form a strong clade, with a sister relationship to species from Tasman Sea islands. Molecular clock estimates place all of the splits within Paratya after the break-up of Gondwana, with Australia being colonised once 3½-8½ million years ago. This transoceanic dispersal is conjectured to have taken place through oceanic currents because of the amphidromous life cycle of some taxa of Paratya. Caridina has a very different biogeographic history in Australia, as numerous Australian species have close evolutionary relationships with non-Australian taxa from locations throughout the region. This implies many colonisations to or from Australia over a long period, and thus highlights the surprising adeptness of freshwater shrimp in dispersal across ocean barriers and the unity of much of the region's freshwater biota. A number of potential species radiations within Australia were also identified. This agrees with patterns detected for a large number of Australian freshwater taxa, and implies a vicariant explanation due to the development of colder, dryer climates. The systematic relationships of the remaining two Australian surface genera (Caridinides, Australatya) and two subterranean genera (Parisia, Pycnisia) were also investigated. Australatya forms a strong clade with Pacific 'Atya-like' genera, and Caridinides falls within a clade containing Australian Caridina. The hypogean genera, Parisia and Pycnisia, form a strong clade in all analyses, implying an Australian subterranean speciation. The possibility of a relationship between Parisia/Pycnisia and some Australian Caridina species may have implications for the monophyly of the highly disjunct genus Parisia, as it may descend from local Caridina species and represent convergent morphologies. The common and speciose genus Caridina was used as a model taxon for analyses within Australia. At the medium scale, molecular taxonomic techniques were used to uncover cryptic species within a problematic east Australian species complex. At least five species were detected. Phylogeographic and population genetic analyses were carried out on each of these five cryptic species, which diverged from each other in the late Miocene/Pliocene. There were very large differences between the species in the scales of overall geographic distribution, intraspecific divergence and population structure. These were characterised as either: 1) species with large ranges, low intraspecific divergence, limited phylogeographic structuring (Caridina sp. D); 2) species with large ranges, high intraspecific divergence, a high level of phylogeographic structuring (sp. B); 3) species with a limited range, low intraspecific divergence, no phylogeographic structuring (sp. E); or 4) species with limited ranges, high intraspecific divergences, a high level of phylogeographic structuring (sp. A & C). These patterns reflect a combination of large-scale factors, such as landscape structure and climate change, and small-scale factors, such as species-specific tolerances to local conditions and differing dispersal capabilities. Life history variation (egg size) between species may be correlated with different dispersal abilities. Species with the smallest eggs have the least intraspecific divergence and largest distribution, while those with the biggest eggs have the most divergence and smallest distribution, with medium-sized egg species in between. At the smallest phylogeographic scale, C. sp. C from the sand dune islands of Moreton Bay in southeastern Queensland was further analysed. Two different lineages (C1, C2) were found which diverged from each other during the late Miocene/Pliocene and so are older than the current landscape in which they are found. Small-scale phylogeographic analyses within C1, C2 and a sympatric fish identified divergences dating to the Pleistocene (about 100-300 thousand years ago). This implies that ice age sea-level changes may have structured these populations, although there is little observable influence of the last glacial maximum (about 18 thousand years ago). This study has highlighted a number of taxonomic anomalies within the Atyidae. The detection of many cryptic species implies that biodiversity within freshwater invertebrates is higher than currently appreciated. The evolutionary and biogeographic relationships of Australian atyids have proved complex, with many taxa having their own individual histories. At the large Indo-Pacific scale, dispersal is most evident, but within Australia, both vicariance and dispersal have been responsible for structuring all taxa at every scale.
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Page, Timothy J. "An Evolutionary History of the Freshwater Shrimp Family Atyidae in Australia." Thesis, Griffith University, 2007. http://hdl.handle.net/10072/367826.
Full textAbstract:
The aim of this thesis is to use phylogenetic analyses of mitochondrial DNA to investigate the biogeography and evolutionary relationships within the freshwater shrimp family Atyidae in Australia at a nested series of scales, both geographic and systematic. At the largest scale, the relationships between Australian and Indo-West Pacific species were inferred using the two most common atyid genera in Australia, Caridina and Paratya. Most atyids are hypothesised to have colonised Australia from Southeast Asia, but Paratya may be a Gondwanan relict given its distribution. Australian Paratya all form a strong clade, with a sister relationship to species from Tasman Sea islands. Molecular clock estimates place all of the splits within Paratya after the break-up of Gondwana, with Australia being colonised once 3½-8½ million years ago. This transoceanic dispersal is conjectured to have taken place through oceanic currents because of the amphidromous life cycle of some taxa of Paratya. Caridina has a very different biogeographic history in Australia, as numerous Australian species have close evolutionary relationships with non-Australian taxa from locations throughout the region. This implies many colonisations to or from Australia over a long period, and thus highlights the surprising adeptness of freshwater shrimp in dispersal across ocean barriers and the unity of much of the region's freshwater biota. A number of potential species radiations within Australia were also identified. This agrees with patterns detected for a large number of Australian freshwater taxa, and implies a vicariant explanation due to the development of colder, dryer climates. The systematic relationships of the remaining two Australian surface genera (Caridinides, Australatya) and two subterranean genera (Parisia, Pycnisia) were also investigated. Australatya forms a strong clade with Pacific 'Atya-like' genera, and Caridinides falls within a clade containing Australian Caridina. The hypogean genera, Parisia and Pycnisia, form a strong clade in all analyses, implying an Australian subterranean speciation. The possibility of a relationship between Parisia/Pycnisia and some Australian Caridina species may have implications for the monophyly of the highly disjunct genus Parisia, as it may descend from local Caridina species and represent convergent morphologies. The common and speciose genus Caridina was used as a model taxon for analyses within Australia. At the medium scale, molecular taxonomic techniques were used to uncover cryptic species within a problematic east Australian species complex. At least five species were detected. Phylogeographic and population genetic analyses were carried out on each of these five cryptic species, which diverged from each other in the late Miocene/Pliocene. There were very large differences between the species in the scales of overall geographic distribution, intraspecific divergence and population structure. These were characterised as either: 1) species with large ranges, low intraspecific divergence, limited phylogeographic structuring (Caridina sp. D); 2) species with large ranges, high intraspecific divergence, a high level of phylogeographic structuring (sp. B); 3) species with a limited range, low intraspecific divergence, no phylogeographic structuring (sp. E); or 4) species with limited ranges, high intraspecific divergences, a high level of phylogeographic structuring (sp. A & C). These patterns reflect a combination of large-scale factors, such as landscape structure and climate change, and small-scale factors, such as species-specific tolerances to local conditions and differing dispersal capabilities. Life history variation (egg size) between species may be correlated with different dispersal abilities. Species with the smallest eggs have the least intraspecific divergence and largest distribution, while those with the biggest eggs have the most divergence and smallest distribution, with medium-sized egg species in between. At the smallest phylogeographic scale, C. sp. C from the sand dune islands of Moreton Bay in southeastern Queensland was further analysed. Two different lineages (C1, C2) were found which diverged from each other during the late Miocene/Pliocene and so are older than the current landscape in which they are found. Small-scale phylogeographic analyses within C1, C2 and a sympatric fish identified divergences dating to the Pleistocene (about 100-300 thousand years ago). This implies that ice age sea-level changes may have structured these populations, although there is little observable influence of the last glacial maximum (about 18 thousand years ago). This study has highlighted a number of taxonomic anomalies within the Atyidae. The detection of many cryptic species implies that biodiversity within freshwater invertebrates is higher than currently appreciated. The evolutionary and biogeographic relationships of Australian atyids have proved complex, with many taxa having their own individual histories. At the large Indo-Pacific scale, dispersal is most evident, but within Australia, both vicariance and dispersal have been responsible for structuring all taxa at every scale.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Australian School of Environmental Studies
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Gurgel, Paulo Pachelle Pinheiro. "Revisão taxonômica e filogenia dos camarões de água doce da família Euryrhynchidae Holthuis, 1950 (Crustacea: Decapoda: Cariddea)." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/38/38131/tde-06102016-103726/.
Full textAbstract:
O presente estudo consiste na mais completa revisão taxonômica e análise filogenética dos camarões de água doce da família Euryrhynchidae Holthuis, 1950. O trabalho foi realizado com base em material depositado em coleções carcinológicas do Brasil, Estados Unidos e vários países da Europa. A análise filogenética incluiu todas as espécies da família Euryrhynchidae, além de 7 espécies de outras famílias de Palaemonoidea Rafinesque, 1815 que foram relacionadas à Euryrhynchidae em trabalhos anteriores: Desmocaris trispinosa (Aurivillius, 1898) (Desmocarididae Borradaile, 1915); Palaemon carteri (Gordon, 1935), P. pandaliformis (Stimpson, 1871), Troglocubanus gibarensis (Chace, 1943) e Tr. inermis (Chace, 1943) (Palaemonidae Rafinesque, 1815); Typhlocaris galilea Calman, 1909 e Ty. lethaea Parisi, 1920 (Typhlocarididae Annandale & Kemp, 1913). Leander paulensis Ortmann, 1897 (Palaemonidae) foi escolhida para o enraizamento da árvore. O estudo também apresenta uma análise detalhada da diversidade morfológica presente em Euryrhynchidae no âmbito dos demais palaemonóideos. A revisão taxonômica confirma a validade das 7 espécies atualmente descritas para Euryrhynchidae, além de propor 2 novas espécies relacionadas a Euryrhynchus amazoniensis Tiefenbacher, 1978. As espécies Euryrhynchus amazoniensis, E. burchelli Calman, 1907, E. pemoni Pereira, 1985 e E. wrzesniowskii Miers, 1877 são redescritas e ilustradas com base na série tipo e material adicional estudados. Também são propostos caracteres diagnósticos adicionais para diferenciar as espécies de Euryrhynchus Miers, 1877, anteriormente separadas apenas pelo número e posição dos espinhos no carpo e mero do pereiópodo 2. A análise cladística foi composta por uma matriz de 102 caracteres morfológicos e resultou em 4 árvores igualmente parcimoniosas. O monofiletismo da família Euryrhynchidae também foi recuperado, sendo sustentado por 10 sinapomorfias não ambíguas. O gênero Euryrhynchina Powell, 1976 aparece como táxon mais basal da família e grupo irmão do clado Euryrhynchoides Powell, 1976 + Euryrhynchus. A topologia obtida para os gêneros de Euryrhynchidae sugere a presença de um táxon irmão a Euryrhynchina (ainda não descoberto ou já extinto) no continente sul americano. A análise também revelou a existência de dois grupos monofiléticos dentro de Euryrhynchus, com o relacionamento de E. wrzesniowskii com esses dois clados ainda não resolvido. Typhlocarididae aparece como grupo irmão de Euryrhynchidae, corroborando o resultado de estudos morfológicos anteriores. Desmocarididae, proposto em trabalhos recentes como grupo irmão de Euryrhynchidae com base em dados moleculares, surge mais à base, inserido entre os táxons de Palaemonidae.The present study comprises the most complete taxonomic revision and phylogenetic analysis of the freshwater shrimps of the family Euryrhynchidae Holthuis, 1950. The study was based on material deposited in carcinological collections from Brazil, United States, and several other European countries. The phylogenetic analysis included all species of the family Euryrhynchidae and 7 species from other families within the Palaemonoidea Rafinesque, 1815 that were related to Euryrhynchidae in previous studies: Desmocaris trispinosa (Aurivillius, 1898) (Desmocarididae Borradaile, 1915); Palaemon carteri (Gordon, 1935), P. pandaliformis (Stimpson, 1871), Troglocubanus gibarensis (Chace, 1943) e Tr. inermis (Chace, 1943) (Palaemonidae Rafinesque, 1815); Typhlocaris galilea Calman, 1909 e Ty. lethaea Parisi, 1920 (Typhlocarididae Annandale & Kemp, 1913). Leander paulensis Ortmann, 1897 (Palaemonidae) was used as outgroup. This study also includes a detailed analysis of the morphological diversity present in Euryrhynchidae compared to the remaining palaemonoids. The taxonomic revision confirms the validity of the 7 species described in Euryrhynchidae and describes 2 new species related to Euryrhynchus amazoniensis Tiefenbacher, 1978. The species Euryrhynchus amazoniensis, E. burchelli Calman, 1907, E. pemoni Pereira, 1985 and E. wrzesniowskii Miers, 1877 are redescribed and illustrated based on the type series and additional material examined. Additional diagnostic characters are proposed to differentiate the species of Euryrhynchus Miers, 1877, previously separated only by the armature of the carpus and merus of the pereiopod 2. The cladistic analysis was composed by a matrix of 102 morphological characters and resulted in 4 equally most-parsimonious trees. The monophyly of the family Euryrhynchidae was obtained, supported by 10 unambiguous synapomorphies. The genus Euryrhynchina Powell, 1976 appears as the most basal taxon of the family and sister group of the clade Euryrhynchoides Powell, 1976 + Euryrhynchus. The topology obtained for the euryrhynchid genera suggests the presence of a sister taxon to Euryrhynchina (not discovered or extinct) in South America. The analysis also revealed the existence of 2 monophyletic groups within Euryrhynchus, with the relationship of E. wrzesniowskii to these clades still to be resolved. Typhlocarididae appears as sister group of the Euryrhynchidae, corroborating results from previous morphological studies. Desmocarididae, proposed in recent studies as sister group of the Euryrhynchidae based on molecular data, emerges more basally among the palaemonid taxa.
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Chen, Jia-Yu, and 陳嘉瑜. "The Effect of Salinity, Algal Species and Concentration on the Survival and Development of Caridina Shrimps Larvae." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/77577053222668847869.
Full textAbstract:
碩士國立東華大學
海洋生物多樣性及演化研究所
103
Most of the fresh water ornamental shrimp in the aquarium or in the market are Caridina spp. (Atyidae) captured from the wild. Larviculture of Caridina shrimps are more difficult than other shrimp genera because of the requirement of brackish water. In this study, we examined the effect of salinity (10, 15, 20, 25, 30 ppt), different algal species (Tetraselmis chui, Isochrysis galbana, Chaetoceros muelleri and Nannochloropsis oculata) and different algal concentrations (1x104, 2.5x104, 5x104, 7.5x104, 1x105 cells/ml) on the survival and development of larvae. The results showed that the optimal salinity is 30 ppt, while the highest rate of metamorphosis (81.1±6.9%) was achieved in algal concentration of 1x105cells/ml with Tetraselmis chui. Mean development time to postlarval stage is 32.6±8.6 days. The optimum conditions was applied in rearing C. multidentata, C. laoagensis and C. prashadi, and the metamorphosis rate were 56.2, 53.6 and 58.0%, respectively.
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Chen, Chia-Yu, and 陳家瑜. "Studies on the Developmental Biology and Larvae Culture of Caridina longirostris Associated with Microalgae Species and Salinities." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/mggyfu.
Full textAbstract:
碩士國立臺灣海洋大學
水產養殖學系
105
The Caridina longirostris is a small sized species of aquarium shrimp together with its cousin the Amano shrimp (Caridina multidentata) as popular algae cleaners for aquarium. A series of experiments associated with maturation induction, larval culture and environmental condition have been conducted and concluded blow. Young adults fed polychaete exhibited the fastest gonado development within 6 weeks but showed no significance with those fed oyster. The overall result of dietary treatment on maturation induction effects compared was polychaete > oyster > squid > control. The survival rate (75.6±8.3%) of the metamorphosed post larvae at a salinity level of 20 ‰ was the highest among overall salinity conditions. Microalgae feeding trials showed that mixed algae (Skeletonema costatum + Thalassiosira weissflogii) yielded a better post larval harvest rate (43.7±2.3%) than any other trials by single algae species fed. Of the single algae comparisons, the post larval harvest rate of those fed Skeletonema costatum (41.2±2.6%) was the best, Thalassiosira weissflogii (22.8±6%) the second best, Tetraselmis chui being the moderate one (11.2±2%), while Isochrysis galabna (0%) and Chaetoceros muelleri (0%) were the lowest two. There requires at least a timing duration of 3 days post-staying in saline water before those metamorphosed juveniles can get through saline-freshwater acclimation transition process at the onset of the experiment to guarantee a full survivals of 100%.
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Lin, Chia-Chi, and 林家齊. "The Effects of Salinity, Species of Microalgae and Feeding Densities of Tetraselmis chui on the Larval Culture of Caridina brevicarpalis." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/mmgwct.
Full textAbstract:
碩士國立臺灣海洋大學
水產養殖學系
107
This study aims to investigate the optimal growth conditions for the larval culture of Caridina brevicarpalis so that the informative results can be used as background knowledge for seed production as well as population reservation purpose. The first three experiments were conducted to investigate the effects of salinity, microalgae species and microalgae densities on the metamorphic larval survival rate and growth rate (larval stage index, LSI) in the end of each larval culture experiment. The last experiment was involved in the comparison between the two progeny sources of wild and artificially captivatedly induced spawners on their own respective larval survivals. Constant conditional setups for larval density (25 ind./L), photoperiod (12L:12D) and temperature (25±1℃) were kept all the same throughout each and every experiment described above. It was found that the highest metamorphic larval survival rate occurred at salinity level of 15‰ (53.3%) which was significantly higher than those cultivated at 20‰ (33.3%), 25‰ (19.3%), 10‰ (18.0%), and 30‰ (0%) being the lowest. The highest metamorphic larval survival rate occurred in the group of larvae received Tetraselmis. chui (62.7%) which was significantly higher than those of the rest three treatments, Thalassiosira weissflogii (4.0%) Chaetoceros muelleri (0.7%) Isochrysis galbana (0%). Of the four feeding densities of T.chui (0.5, 1.0, 2.0, 4.0) ×105 cells/ml, significant higher metamorphic larval survival rate appeared in those larvae received density either at 0.5×105cells/ml (57.3%) or 1.0×105 cells/ml (46.0%) than the other two densities at 2.0×105cells/ml (27.3%) and 4.0×105 cells/ml (0%). At salinity level of 15 ‰ and feeding density of T. chui (0.5×105 cells/ml), metamorphic larval survival rate of the artificially produced progenies (64.0%) was higher than that of the wild origin (51.3%). It is suggested that the optimum salinity of 15 ‰ and microalgal feeding densities of 0.5-1.0×105cells/ml are suitable for larval culture of C. brevicarpalis under the conditional photoperiod 12L: 12D and water temperature 25±1℃. And Larval stages of C. brevicarpalis is divided into ten stages (Zoea stage I-V, Mysis stage I-IV, Post Larva) within 24 days of culture.
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Lin, Yu-Hung, and 林鈺洪. "The Effect of Salinity and Microalgae Species and Their Associated Densities on the Survival and Development of Larvae of Caridina serratirostris." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/qk68f2.
Full textAbstract:
碩士國立臺灣海洋大學
水產養殖學系
107
The objective of this study is to investigate the optimal growth conditions for the larval culture of Ninja shrimp, Caridina serratirostris, so as to provide criteria guide line in seed production both for future commercial farming and wild population conservation. A series of experiments have been executed on the effects of salinity, microalgae species and microalgae density to do with the survival rate during larval culture. Additional larval survival and growth rate between the progenies of wild and artificially produced ones were compared. All the experiments initiated Zoea I stage at a density of 30 ind./L in a 2-liter beaker (3 replicates) with unified photoperiod (12L:12D), temperature (25±1℃) conditional parameters. Result of feeding larvae with Tetraselmis chui (1.5x105 cells/ml) showed that the highest larval metamorphic survival rate (50%) occurred at a salinity of 25‰ significantly higher than that at 30‰ (28.9%), 20‰ (16.6%) and 15 ‰ (2.2%, the lowest). Of the four Microalgal species, feeing ninja shrimp larvae at density of 1.5×105cell/ml found that T. chui exhibited highest metamorphic survival rate (31.1%) significantly higher than that group fed Chaetocero muelleri (5.3%). All shrimp larvae fed Isochrysis galbana and Thalassiosira weissflogii died at various stages before metamorphosis. Of the algal density trial, five density levels of C. muelleri (0.5, 1, 2, 4, 8) × 105 cell/ml and four for Tetraselmis chui (0.5, 1, 2, 4) × 105 cell/ml (triplicate) were fed to the larvae of each treatment. It was found that the highest survival rate (73.3 %) occurred at those larvae received T. chui density at 5×104 cells/ml which was significantly higher than the group at 1×105 cells/ml (50.0%), 4×105 cells/ml ( 27.7%) and 2×105 cells/ml (25.5%, the lowest); whilst, those received C. muelleri showed the highest survival rate (33.3%) at a density of 2×105 cells/ml significantly higher than the group at 1×105 cells/ml (7.8%). Zero survival rate occurred at too low (5×104 cells/ml) or too high (4×105, 8×105 cells/ml) of C. muelleri densities fed groups of larvae tested. It is concluded that the optimal condition set for culturing ninja shrimp larvae, C. serratirostris be: larval culture density (30 ind./L), T. chui feeding density (5×104 cells/ml), photoperiod (12L: 12D), temperature (25±1℃). Detailed developmental stages and their associated keys are described throughout the duration from Zoea I to post larva stage within 22 - 24 days of culture.
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Pean, Jude, and 朱培安. "The Effect of Four Microalgae Species on the Development, Growth and Survivals of the Larvae of Amano Shrimp (Caridina multidentata) under Two Temperature conditions." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/2fr69a.
Full textAbstract:
碩士國立臺灣海洋大學
水產養殖學系
105
ABSTRACT The objectives of this study were to evaluate four different algae species, Tetraselmis chuii, Isochrysis galbana, Thalassiosira weissflogii, Chaetoceros muelleri as live feed fed to the Amano shrimp (Caridina multidentata) larvae at equal density of 2 x105cells/ml (three replicates) under two temperature conditions on the development, growth and survivals. A triplicated 4x2 factorial experiment was designed. The newly released shrimp larvae (Zoea1) obtained from pouched brooders were placed in 100 L Fiberglass reinforced plastics (FRP) at a density of 30 larvae/liter and a salinity of 20‰ for each experimental unit. Of the survival rate through covariance analysis, there existed no temperature effect between 29°C and 25°C, with the respective values of 9%, 12%, 35%, 36% for the larvae received C. muelleri, I. galbana, T. chuii, T. weissflogii at high temperature condition (29°C) compared to the corresponding values of 9%, 13%, 35%, 38% at low temperature (25°C). It was found that the metamorphosed juveniles with averaged body length of 5.33±0.04 mm on the larvae fed T. chui at day 19, which significantly higher than the corresponding 19-day-age length values of larvae fed T. weissflogii (4.76±0.09 mm), I. galbana (3.68±0.29 mm) and C. muelleri (3.28 ± 0.15 mm) at 29° C. At 25° C, the metamorphosed juveniles appeared on day 19 with averaged body length of 5.30±0.14 mm for those fed T. chui, which were significantly higher than those larvae on day 19 fed T. weissflogii (4.90 ± 0.02 mm), I. galbana (4.02 ± 0.01 mm) and Chaetoceros muelleri (3.28 ± 0.15 mm) respectively. At 29 °C and at day 19, the average length of pereiopod were 1.15±0.21 mm, 0.95±0.09 mm, 0.68±0.03 mm and 0.62±0.02 mm for T. chui, T. weissflogii, I. galbana and C. muelleri respectively. At 25°C and at day 19, in the treatment of Tetraselmis chui, the average length of pereiopods were 1.28 ± 0.12 mm while it was 0.45 ± 0.05 mm, 0.68 ± 0.08 mm and 0.95 ± 0.12 mm for C. muelleri, I. galbana and T. weissflogii respectively. At 29 °C and at day 19, in the treatment of Tetraselmis chui, the average length of pleopod were 0.84 ± 0.06 mm while it was 0.72 ± 0.04 mm, 0.22 ± 0.09 mm and 0.13 ± 0.02 mm for T. weissflogii, I. galbana and C. muelleri respectively. At 25 °C and at day 19, the results were 0.82 ± 0.07 mm, 0.72 ± 0.09 mm, 0.29 ± 0.01 mm and 0.31 ± 0.01 mm for T. chui, T. weissflogii, I. galbana and C. muelleri. In conclusion, both C. muelleri and I. galbana were recommended live diets for planktonic larvae of C. multidentata when culture condition was well control for: temperature 25-29℃, larvae density 30 individuals/L, algae density 2 x 105 cells/ ml, salinity 20‰. Keywords: Algae, Caridina multidentata, development, growth, larvae culture, Ornamental shrimp,
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Hsu, Chia-Yu, and 徐佳瑜. "Molecular taxonomy on the deep-sea shrimp species of the “Plesionika martia” species group (Crustacea: Decapoda: Caridea)." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/wz9ysf.
Full textAbstract:
碩士國立臺灣海洋大學
海洋生物研究所
107
Members of the “Plesionika martia” species group are deep-sea shrimps and can be found world-wide. In some areas they are rather abundant and of commercial importance. Four species are currently recognized in this species groups, namely P. martia (A. Milne-Edwards, 1881), P. semilaevis Bate, 1888, P. orientalis Chace, 1985 and P. parvimartia Chace, 1985. However, there are still many controversies in the taxonomy of this species group. This works successfully sequenced the mitochondrial cytochrome oxidase (COI) and 16S rDNA genes of 48 specimens from eight localities in the western Atlantic, Western Pacific and Indian Ocean. Together with the sequences of two specimens from the type locality eastern Atlantic of P. martia in the GenBank, the present analysis includes topotypic material of all the four species in this group. The highest COI sequence divergence in this group is revealed to be 23.0%. Moreover, intraspecific COI sequence divergence can be as high as 18.6% in P. martia, 11.7% in P. orientalis and 16.8% in P. semilaevis. Analysis using the species delimitation model Species Tree and Classification Estimation, Yarely (STACEY) reveals that the P. martia group actually consists of 11 species. Except for P. parvimartia, there are cryptic species in the other three species. There should be five species within the material currently identified as P. martia, two species in P. orientalis and three species in P. semilaevis. Nevertheless, distinguishing morphologically differences have so far only been found amongst the cryptic species in P. orentalis and P. semilaevis. Keywords: Plesionika、"Plesionika martia" group、STACEY、Molecular taxonomy
Books on the topic "Species caridina"
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Mariappan, N. Studies on freshwater prawns of family Atyidae and Palaemonidae from Kanchipuram and Thiruvallur Districts, Tamilnadu, India, including one new species of the Genus, Caridina H. Milne Edwards, 1837. Kolkata: Zoological Survey of India, 2006.
Find full textBook chapters on the topic "Species caridina"
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Sudnik, S. A., and Yu E. Egorova. "Invasive Species Palaemon Elegans Rathke, 1836, (Caridea: Palaemonidae) as the Only Species of Palemon Shrimps in Water Bodies of the Kaliningrad Region." In Environmental Science and Engineering, 63–71. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08284-9_7.
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Fransozo, Adilson, Rogério C. Costa, Fernando L. M. Mantelatto, Marcelo A. A. Pinheiro, and Sandro Santos. "Composition and Abundance of Shrimp Species (Penaeidea and Caridea) in Fortaleza Bay, Ubatuba, São Paulo, Brazil." In Modern Approaches to the Study of Crustacea, 117–23. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0761-1_19.
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Antonio Baeza, J. "Sexual Systems in Shrimps (Infraorder Caridea Dana, 1852), with Special Reference to the Historical Origin and Adaptive Value of Protandric Simultaneous Hermaphroditism." In Transitions Between Sexual Systems, 269–310. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94139-4_10.
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"Species of Caridina nilotica group in China, with description of one new species (Crustacea, Decapoda, Atyidae)." In Studies on the Taxonomy of Crustaceans, 173–90. BRILL, 2021. http://dx.doi.org/10.1163/9789004464353_012.
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"A new species of Caridina H. Milne Edwards, 1837 (Decapoda, Caridea, Atyidae) from the Betsiboka River Basin, Madagascar." In Studies on Malacostraca: Lipke Bijdeley Holthuis Memorial Volume, 637–44. BRILL, 2010. http://dx.doi.org/10.1163/9789047427759_045.
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"Atyid shrimps of Hainan Island, southern China, with the description of a new species of Caridina (Crustacea, Decapoda, Atyidae)." In Advances in Freshwater Decapod Systematics and Biology, 207–31. BRILL, 2014. http://dx.doi.org/10.1163/9789004207615_013.
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Schram, Frederick R., and Stefan Koenemann. "Procaridea." In Evolution and Phylogeny of Pancrustacea, 514–22. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780195365764.003.0037.
Full textAbstract:
Members of the infraorder Procaridea were at first located as a family of Caridea, then separated out as a sister group to the carideans, then placed back inside Caridea, and finally today currently sit as a distant sister group to Caridea. There are only six6 species known at present in two genera—certainly one of the smallest of pancrustacean groups. They brood their eggs on their pleopods, and so are good pleocyematans. What is distinctive about them is that they all occur on widely isolated islands. This could be a relict distribution from an ancient origin,. or perhaps these species might all be linked by certain “conveyor-belt” surface currents in the world’s oceans. We await further discoveries.
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Schram, Frederick R., and Stefan Koenemann. "Caridea and Amphionides." In Evolution and Phylogeny of Pancrustacea, 523–45. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780195365764.003.0038.
Full textAbstract:
The infraorder Caridea has figured under various names as an important component of natant decapods. But it was not until the 1980s that cladistic analyses of carideans appeared in print (Christoffersen), and that which lead to a series of cladistically framed revisions of the infraorder. With well over 3,000 species, the secret to their success most likely arises from their diverse modes of reproduction., They also possess multiple patterns of foregut ossicles, thus easily accommodating a wide variety of diets. Caridea, while conforming to a generalized natantian body type, is morphologically a rather diverse group in many subtle ways. It is difficult to provide exact numbers of taxa because this group is actively being worked on, with new species frequently being described.
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Valenti, Wagner C., and Dallas L. Flickinger. "Freshwater Caridean Culture." In Fisheries and Aquaculture, 207–32. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190865627.003.0009.
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This chapter focuses on advances in the farm production of the freshwater prawns (FWPs) Macrobrachium spp., primarily on M. rosenbergii. Farming FWPs is generally divided into four phases: reproduction, hatchery, nursery, and grow-out. The broodstock is held in earthen ponds or indoor tanks filled with freshwater. The hatchery is usually performed in intensive systems, using indoor tanks and brackish water, whereas the nursery phase uses freshwater in indoor tanks or in earthen ponds. The grow-out is generally performed in semi-intensive systems, using freshwater earthen ponds in monoculture, but integrated systems with fish, crabs, or rice are also very common. The production strategy is site specific and should be set up according to the species raised, climate characteristics, and the desired market size of the prawn. Productivity generally ranges from 1,000 to 4,500 kg/ha/yr, but may surpass 11,000 kg/ha/yr in tropical areas. Production is concentrated in Asia, mainly in China. Most production is traded in local markets, and FWPs are usually sold alive, but some countries, such as Bangladesh, India, and Thailand, export frozen prawns to Europe and the USA. Substantial scientific literature and more than 100 patents support the technology for farming FWPs. However, genetics, nutrition, and interaction with other species in integrated culture are still issues. The culture of FWPs has been described in detail in a number of international review papers, books and book chapters, and practical manuals. This chapter summarizes and updates the information found in those publications.
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Schram, Frederick R., and Stefan Koenemann. "Stem Eumalacostracans?" In Evolution and Phylogeny of Pancrustacea, 259–64. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780195365764.003.0020.
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Eumalacostraca is by far the largest and most diverse clade of Multicrustacea. Both cohorts, Caridoida and Hoplocarida, extend back to at least the middle of the Paleozoic. Others among these species eventually might be assigned to actual crown taxa when understanding of their anatomy becomes clearer, as indeed has happened in one case. However, many of the earliest fossils are incomplete in their preservation, and what is known of their anatomy requires that they be treated cautiously. Thus, they are best characterized as “stem forms” rather than being squeezed into some higher taxon. These groups do illustrate aspects of the earliest eumalacostracan radiation.
Conference papers on the topic "Species caridina"
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Horch, A. P., and F. B. Ribeiro. "DESCRIPTION OF TWO NEW SPECIES OF PARASITIC ISOPODS (ISOPODA, BOPYRIDAE) ASSOCIATED WITH CARIDEAN SHRIMPS (DECAPODA, CARIDEA) FROM BRAZIL." In X Congresso Brasileiro sobre Crustáceos. Sociedade Brasileira de Carcinologia, 2018. http://dx.doi.org/10.21826/2178-7581x2018298.
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Ishida, Hiroshi, Nobuhiro Maeda, Tetsuya Miwa, Tetsuo Yamazaki, Yoshihisa Shirayama, Tetsuhiko Toyohara, Nobuyuki Okamoto, and Takayoshi Kodama. "Characteristics of the Environment Around a Massive Sea-Floor Sulfide Area in the Okinawa Trough." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49987.
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It is necessary to carry out a proper environmental impact assessment for not only the sea-floor massive sulfide area where a special hydrothermal-vent chemosynthetic ecosystem is observed, but also its surrounding area. This paper shows provisional results of the environmental baseline survey conducted at the Izena Cauldron in 2009. Environmental conditions differed clearly between inside and outside of the Cauldron. In the inside area, a high turbidity layer was recognized at ca. 200 m above the sea-floor. In the bottom layer close to the hydrothermal active region, water temperature was slightly higher than the surrounding area with the lower pH, higher concentrations of both carbon dioxide and the dissolved Mn. Inside the Cauldron, the sulfur isotope ratio of the sediment close to a sea-floor massive sulfide was similar to that of the hydrothermal sulfate. In addition, heavy metal concentrations of the sediment were higher inside than outside of the Cauldron. Especially, concentrations of Cd, As and Hg were as high as poisonous levels. These results show the possibility that most of the chemical materials derived from hydrothermal vent remain in the Cauldron. Pelagic shrimps of the family Oplophoridae were widely distributed in the bottom layer inside the Cauldron. The biomass of benthic shrimps which belong to infraorder Caridea was higher inside than outside of the Cauldron. These higher biomass was likely caused by the abundant organic matter. This hypothesis was reinforced by the result of the mooring sediment trap (placed at ca. 50 m above the seafloor) experiment, which demonstrated that the settling particle in the Cauldron was supplied from not only the euphotic zone but also the hydrothermal-vent ecosystem.