Morphological descriptions of the larval and first juvenile stages of the decorator crab Camposcia retusa (Latreille, 1829) from laboratory-reared material

Zootaxa ◽  
2019 ◽  
Vol 4577 (2) ◽  
pp. 295
Author(s):  
TIAN XU ◽  
CHAOSHU ZENG ◽  
KATE S. HUTSON
Keyword(s):  
Coral Reefs ◽  
Larval Development ◽  
Red Sea ◽  
Larval Stage ◽  
Morphological Characters ◽  
Larval Stages ◽  
Juvenile Stages ◽  
Decorator Crab ◽  
Newly Hatched Larvae ◽  
First Time

The complete larval and first crab stages of the decorator crab Camposcia retusa (Latreille, 1829) are described and illustrated based on laboratory-reared material for the first time. Specimens were obtained from larvae hatched from adult crabs collected from coral reefs of Queensland, Australia. Newly hatched larvae were successfully reared to settlement as the first-stage crabs. Larval development consisted of two zoeal stages and one megalopal stage. The morphology of each larval stage was compared with those available from a previous study using material from the Red Sea. Due to substantial differences in morphology of the second zoeal and megalopal stages between the two studies, we argue that these larval stages described by the earlier report may not be that of C. retusa. Finally, the morphological characters of both larval and first crab stages of C. retusa are also compared with the corresponding stages of previously reported Inachidae. 

Complete Larval Development of the Edible Mud.Shrimp Upogebia Edulis Ngoc-Ho & Chan, 1992 (Decapoda, Thalassinidea, Upogebiidae) Reared in the Laboratory

Crustaceana ◽  
1996 ◽  
Vol 69 (2) ◽  
pp. 175-186 ◽  
Author(s):  
Tin-Yam Chan ◽  
Jhy-Yun Shy
Keyword(s):  
Water Temperature ◽  
Larval Development ◽  
Carapace Length ◽  
Larval Stages ◽  
The Third ◽  
Laboratory Conditions ◽  
Mud Shrimp ◽  
Newly Hatched Larvae ◽  
Average Size ◽  
First Time

AbstractThe larvae of the edible mud shrimp Upogebia edulis were successfully reared in the laboratory for the first time. The freshly laid eggs were orange in colour and 1.08 mm x 1.00 mm in average size. The diameter of eyed eggs was between 1.17 mm x 1.13 mm and 1.36 mm x 1.21 mm just before hatching. Under laboratory conditions at a water temperature of 23-26°C and a salinity of 33-34 ppt, newly hatched larvae were planktonic zoeae (average carapace length 0.90 mm) and already with biramous pleopods. The larvae quickly moulted into zoea II the next day and the average carapace length was 0.95 mm. On the third day, the larvae metamorphosed into decapodids with an average carapace length of 1.12 mm. The larval development of U. edulis is therefore abbreviated. The morphology of the larval stages is described in detail and comparisons are made with the larvae of some other Upogebia species found in the adjacent areas.

scholarly journals The morphology of the foregut of larvae and postlarva of Sesarma curacaoense De Man, 1892: a species with facultative lecithotrophy during larval development

2006 ◽  
Vol 36 (3) ◽  
pp. 375-380 ◽  
Author(s):  
Marlon Aguiar Melo ◽  
Fernando Abrunhosa ◽  
Iracilda Sampaio
Keyword(s):  
Fine Structure ◽  
Larval Development ◽  
Larval Stage ◽  
Filter Press ◽  
Gastric Mill ◽  
Juvenile Stages ◽  
De Man ◽  
Lecithotrophic Development

Previous study on the resistance of larvae of Sesarma curacaoense submitted to starvation has revealed a facultative lecithotrophy during zoeal stages, but megalopa and first juvenile stages are exclusively feeding stages. In the present study, the gross morphology and fine structure of the foregut of S. curacaoense were investigated during larval, megalopa and first juvenile stages. The foregut of the zoea I show specific setae and a filter press apparently functional. The foregut undergoes changes in the zoea II (last larval stage) with increment of setae number, mainly on the cardiopyloric valve and complexity of the filter press. After metamorphosis to megalopa stage the foregut become rather complex, with a gastric mill supporting a medial and two lateral teeth well-developed. The foregut of the first juvenile is more specialized compared to the previous stage, showing similar characteristics of the decapod adults. These results provide further evidence of facultative lecithotrophic development in the larvae of S. curacaoense.

Larval development of the shrimp Hippolyte sapphica d’Udekem d’Acoz, 1993 forma A and B (Decapoda: Caridea: Hippolytidae) reared in the laboratory, confirmation of the conspecific status of the two forms

Zootaxa ◽  
2010 ◽  
Vol 2579 (1) ◽  
pp. 45 ◽  
Author(s):  
ALEXANDROS NTAKIS ◽  
CHRYSSA ANASTASIADOU ◽  
ROMAN LIASKO ◽  
IOANNIS D. LEONARDOS
Keyword(s):  
Related Species ◽  
Morphological Characters ◽  
Experimental Conditions ◽  
Closely Related Species ◽  
Larval Stages ◽  
Laboratory Confirmation ◽  
Bibliographic Data ◽  
Immature Form ◽  
Complete Series ◽  
First Time

The complete series of larval staging of Hippolyte sapphica d’Udekem d’Acoz, 1993 forma A and B from Louros estuary was studied in the laboratory and described in detail for the first time. The reared larvae of H. sapphica passed through six zoeal stages and one megalopal stage. The larval monitoring completed when the individuals could be assigned clearly to form A and B via rostra formation. Under the experimental conditions, the average durations of the larval stages were as follows: three days for 1 st and 2 nd stages, three to four days for 3 rd , 4 th , 5 th and 6 th stages, four days for the megalopal stage and 19 to 30 days for immature form A and B individuals. Comparison of the larval morphological characters among the described material and the bibliographic data of closely related species was made and discussed. The offspring of females of the forma A includes forma A and B and the same can be said of the offspring of the forma B. This confirms that the formae A and B are indeed conspecific.

Larval development of Petrolisthes tuberculatus (Guérin, 1835) (Decapoda, Anomura, Porcellanidae) reared in laboratory

Zootaxa ◽  
2019 ◽  
Vol 4623 (2) ◽  
pp. 364-380
Author(s):  
MARIA EUGENIA GONZALEZ-CANALES ◽  
JOSE A. CUESTA ◽  
JUAN IGNACIO GONZÁLEZ-GORDILLO
Keyword(s):  
Larval Development ◽  
The Other ◽  
Larval Stages ◽  
First Time

The complete larval development of Petrolisthes tuberculatus (including two zoeal stages and the megalopa) is described and illustrated in detail for the first time, based on laboratory-reared material. In order to allow the differentiation of specimens from plankton samples, the larval stages of P. tuberculatus are compared with those known for other porcellanid crabs from Chilean waters (Allopetrolisthes angulosus, Petrolisthes granulosus, P. laevigatus and P. violaceus). As expected, this comparison lead to the inclusion of P. tuberculatus within the “sección Porcellanina” together with the other Chilean species of porcellanids. 

The complete description of larval stages of the lobster shrimpLeonardsaxius amurensis(Kobjakova, 1937) (Decapoda: Axiidea: Axiidae) identified by DNA barcoding

2017 ◽  
Vol 98 (6) ◽  
pp. 1435-1453 ◽  
Author(s):  
Elena S. Kornienko ◽  
Darya D. Golubinskaya ◽  
Olga M. Korn ◽  
Svetlana N. Sharina
Keyword(s):  
Larval Development ◽  
Sequence Data ◽  
Molecular Genetic ◽  
Sympatric Species ◽  
Molecular Genetic Analysis ◽  
Mitochondrial Coi ◽  
Larval Stages ◽  
The Family ◽  
Rdna Sequence Data ◽  
First Time

The complete larval development of the lobster shrimpLeonardsaxius amurensis(Kobjakova, 1937) (Decapoda: Axiidea: Axiidae) is described and illustrated for the first time. The first zoeae of this species were collected from the plankton samples and reared in the laboratory before moulting to the megalopa. A molecular genetic analysis based on comparison of partial mitochondrial COI, 12S rDNA and 16S rDNA sequence data confirmed the identity of axiid larvae found in the plankton andL. amurensisadults collected in the same area. The larval development ofL. amurensisincludes five zoeal stages and a single megalopa. Zoeae I ofL. amurensisare characterized by the presence of one short posterodorsal spine on the fifth pleonite in contrast to the larvae of related sympatric speciesBoasaxius princepshaving four posterodorsal spines on the pleonites 2–5.Leonardsaxius amurensisoccupies an intermediate position between lobster shrimps with abbreviated pelagic development (2–3 zoeal stages) and species with long development (up to eight zoeal stages). Thus, the number of zoeal stages in the family Axiidae varies widely, similarly to that in the families Callianassidae and Upogebiidae.

Growth and reproduction of Halicarcinus australis (Haswell) (Crustacea, Brachyura) in the Swan estuary, Western Australia. II. Larval stages

1970 ◽  
Vol 21 (2) ◽  
pp. 163 ◽  
Author(s):  
JS Lucas ◽  
EP Hodgkin
Keyword(s):  
Larval Development ◽  
Larval Stage ◽  
Spatial Distributions ◽  
Laboratory Rearing ◽  
Larval Stages ◽  
Third Stage ◽  
Temperature Ranges ◽  
Causes Of Mortality ◽  
Temporal And Spatial ◽  
Growth And Reproduction

Larvae of Halicarcinus australis (Haswell) were collected in vertical plankton samples from eight stations in the Swan estuary during two summers. The majority of samples included live and dead larvae; the high proportion of dead larvae shows that there are other important causes of mortality besides predation. Third stage zoeae (the final larval stage) occur over more restricted salinity and temperature ranges than earlier zoeal stages, and their temporal and spatial distributions in the estuary are also more restricted. Laboratory rearing of H. australis larvae at 16 chlorinity-temperature combinations shows that larvae are less tolerant of extremes of these parameters than crabs. Hydrological conditions unfavourable for larval development occur throughout the estuary in winter and in upstream regions in summer. However, during much of these periods ovigerous females are present in crab populations and larvae are released, thus accounting for some of the mortality apparent from the plankton samples. Third stage zoeae are found progressively further up stream in summer associated with the advance of favourable salinities and with a zone of plankton abundance. Recruitment into crab populations reflects the time of completion of larval development at each locality.

Description of the first zoeal stage of Synalpheus apioceros Coutière, 1909 (Caridea: Alpheidae), including a comparative analysis with larval morphology from the genus Synalpheus Spence Bate, 1888

Zootaxa ◽  
2020 ◽  
Vol 4838 (1) ◽  
pp. 71-82
Author(s):  
RAFAEL C. SANTOS ◽  
RÉGIS A. PESCINELLI ◽  
ROGERIO C. COSTA
Keyword(s):  
Comparative Analysis ◽  
Larval Development ◽  
Larval Stage ◽  
Morphological Characteristics ◽  
Plumose Seta ◽  
Zoeal Stage ◽  
Larval Morphology ◽  
Morphological Similarity ◽  
Similar Morphology ◽  
Larval Stages

Herein, the Zoea I of Synalpheus apioceros is described, followed by a comparative analysis of the first larval stage from Synalpheus. Larvae were obtained from two ovigerous females sampled in Ubatuba, São Paulo. The morphology of the Zoea I of S. apioceros was compared to five other Synalpheus species whose structures were previously described: S. biunguiculatus, S. minus, S. neomeris, S. pectiniger, and S. tumidomanus. A set of unique morphological characteristics was found for S. apioceros: exopod of antennule with 4 aesthetascs and 1 plumose seta; coxal endite of maxillule with 2 simple setae plus 2 plumose setae; basial endite of maxillule with 2 simple setae plus 2 short spines; endopod of maxillule with 1 plumose seta plus 2 simple setae; basial endite of maxilla bilobed with 2 (1 plumose and 1 simple) + 2 (1 plumose and 1 simple) setae; coxal endite of maxilla bilobed with 2 + 1 plumose setae; endopod of maxilla with 3 (1 plumose and 2 simple) terminal setae + 2 simple setae; endopod of first maxilliped unsegmented with 3 terminal simple setae; basis of first maxilliped with 5 spines; endopod of second maxilliped 5-segmented with 0, 0, 0, 1 plumodenticulate, 4 (1 serrate + 3 simple) setae; endopod of third maxilliped 5-segmented with 0, 0, 0, 1 simple, 3 simple setae; pereiopods 1st to 3rd birramous and 4th and 5th uniramous. S. apioceros shows higher morphological similarity with S. minus, followed by S. tumidomanus, S. neomeris and S. pectiniger, probably since these species present extended larval development. Besides the similar morphology among species, the unique attributes presented here are important for the genus’ taxonomy, being fundamental for identifying the first larval stages of Synalpheus, as well as for subsidizing information for species identification keys. 

Morphology of the first zoeal stage of Macrobrachium surinamicum Holthuis, 1948 (Malacostraca, Decapoda, Palaemonidae) hatched in the laboratory

Crustaceana ◽  
2017 ◽  
Vol 90 (11-12) ◽  
pp. 1337-1350
Author(s):  
Rony R. R. Vieira ◽  
Cleverson R. M. Santos ◽  
Arthur Anker
Keyword(s):  
Larval Development ◽  
Ovigerous Female ◽  
Morphological Characters ◽  
Zoeal Stage ◽  
Freshwater Shrimp ◽  
Larval Stages ◽  
Brazilian State ◽  
Smooth Seta

The first zoeal stage of the freshwater shrimp Macrobrachium surinamicum Holthuis, 1948 is described and illustrated based on hatchlings from an ovigerous female, collected in Rio Campupema, Abaetetuba, in the northern Brazilian state of Pará, and compared with the first zoeae of several other species of the genus occurring in Brazil. Although the first zoeae of the different species of Macrobrachium are morphologically very similar, they can still be separated by a combination of morphological characters but only M. surinamicum has one smooth seta on the maxillular endopod. Although a complete larval series of M. surinamicum presently remains unknown, as pereiopods 3-5 and pleopods are absent, the outcome of this study suggests that the larval development of this species is extended and includes at least seven larval stages.

embryonic and larval development of the malabar grouper, epinephelus malabaricus (pisces: serranidae)

2005 ◽  
Vol 85 (5) ◽  
pp. 1249-1254 ◽  
Author(s):  
ming-yih leu ◽  
chyng-hwa liou ◽  
lee-shing fang
Keyword(s):  
Larval Development ◽  
Larval Habitat ◽  
The Body ◽  
Tank Bottom ◽  
Newly Hatched Larvae ◽  
First Time ◽  
Embryonic And Larval Development ◽  
H 30 ◽  
Epinephelus Malabaricus ◽  
Pelvic Fin

the embryonic and larval development of epinephelus malabaricus are described and illustrated for the first time. fertilized eggs, with a mean diameter of 0.90±0.02 mm and a range from 0.87 to 0.93 mm, were spherical, transparent, buoyant and unpigmented. embryonic development lasted 26 h 30 min at 25.5°c. newly hatched larvae were 1.93±0.04 mm in total length (tl) with 26 (11+15) myomeres and had an oil globule in the ventroposterior area of the yolk sac. three days after hatching (2.76 mm tl), the mouth opened. early larvae had two clusters of well-developed melanophores appearing on the alimentary canal and at the caudal region of the body, and the appearance of xanthophores on the dorsal finfold. nine days after hatching (4.04 mm tl), the buds of the second dorsal and pelvic fin spines had appeared. at 5.41 mm tl, the notochord was slightly flexed, and the hypural bones and caudal fin rays had begun to develop. at 7.39 mm tl, the ratios of the second dorsal and pelvic-fin spine lengths to tl attained their maximums, 52.68% and 48.62%, respectively. at 20.19 mm tl, all fins had the adult complement of rays and spines. by 30.18 mm tl, the body had become red, with five irregular, oblique, dark brown bars visible on the body. the larval habitat shifted from the surface and middle layers to the tank bottom.

scholarly journals Short communication: An overview of the trematodes fauna of pool frog Pelophylax lessonae (Camerano, 1882) in the Volga Basin, Russia: 2. Larval stages

2019 ◽  
Vol 11 (1) ◽  
pp. 106-111
Author(s):  
IGOR V CHIKHLYAEV ◽  
ALEXANDER B RUCHIN ◽  
ALEXANDER I FAYZULIN
Keyword(s):  
Host Specificity ◽  
Geographic Distribution ◽  
Larval Stage ◽  
Short Communication ◽  
Volga Basin ◽  
Larval Stages ◽  
The Past ◽  
Stage Of Development ◽  
The Given ◽  
First Time

Abstract. Chikhlyaev IV, Ruchin AB, Fayzulin AI. 2019. Short communication: An overview of the trematodes fauna of the pool frog Pelophylax lessonae (Camerano, 1882) in the Volga Basin, Russia: 2. Larval stages. Nusantara Bioscience 11: 106-111. This paper presents data on the trematodes fauna of the pool frog Pelophylax lessonae (Camerano, 1882) from 13 regions of the Volga Basin. It consolidates data from different authors over the past 30 years, supplemented by our own research results. There are authentically known findings of 10 trematodes species at the larval stage of development. The species Codonocephalus urniger (Rudolphi, 1819), mtc., Neodiplostomum spathoides Dubois, 1937, mtc. and Pharyngostomum cordatum (Diesing, 1850), mtc. have been observed for the first time in the given host on the territory of Russia and Volga basin. For each species of trematodes, there is the following information is included: taxonomic position, localization, area of detection, biology, definitive hosts, geographic distribution and degree of host-specificity.

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