scholarly journals Larval stages of Areopaguristes japonicus (Miyake, 1961) (Decapoda: Anomura: Diogenidae) described from laboratory reared material

Zootaxa ◽  
2012 ◽  
Vol 3368 (1) ◽  
pp. 146 ◽  
Author(s):  
SEOK HYUN LEE ◽  
HYUN SOOK KO
Keyword(s):  
Ovigerous Female ◽  
Northwestern Pacific ◽  
Korean Waters ◽  
Larval Stages ◽  
South Korean ◽  
First Time

Areopaguristes japonicus (Miyake, 1961) is recorded from South Korean waters for the first time with the collection of an ovigerous female. The zoeal and megalopal stages of this species are described from laboratory reared material and compared to larvae of eight other described Diogenidae species from the northwestern Pacific. The larvae of A. japonicas are distinguished from those of other diogenids by mediodorsal spines on zoeal pleomeres 3 and 4 and having a spine on the mediodorsal margin of the megalopal pleomere 2. A provisional key for identifying diogenid zoeas from the northwestern Pacific is provided.

scholarly journals DNA barcoding and morphological identification of spiny lobsters in South Korean waters: a new record of Panulirus longipes and Panulirus homarus homarus

PeerJ ◽  
2022 ◽  
Vol 10 ◽  
pp. e12744
Author(s):  
Sachithra Amarin Hettiarachchi ◽  
Ji-Yeon Hyeon ◽  
Angka Mahardini ◽  
Hyung-Suk Kim ◽  
Jun-Hwan Byun ◽  
...  
Keyword(s):  
Phylogenetic Analyses ◽  
Phylogenetic Profile ◽  
Spiny Lobster ◽  
Morphological Identification ◽  
Abdominal Somite ◽  
Morphological Variations ◽  
Korean Waters ◽  
South Korean ◽  
Spiny Lobsters ◽  
First Time

To date, 19 species of spiny lobsters from the genus Panulirus have been discovered, of which only P. japonicus, P. penicilatus, P. stimpsoni, and P. versicolor have been documented in South Korean waters. In this study, we aimed to identify and update the current list of spiny lobster species that inhabit South Korean waters based on the morphological features and the phylogenetic profile of cytochrome oxidase I (COI) of mitochondrial DNA (mtDNA). Spiny lobsters were collected from the southern and eastern coasts of Jeju Island, South Korea. Phylogenetic analyses were performed using neighbor-joining (NJ), maximum likelihood (ML), and Bayesian inference (BI) methods. The ML tree was used to determine the spiny lobster lineages, thereby clustering the 17 specimens collected in this study into clades A, B, C, and D, which were reciprocally monophyletic with P. japonicus, P. homarus homarus, P. longipes, and P. stimpsoni, respectively. These clades were also supported by morphological examinations. Interestingly, morphological variations, including the connected pleural and transverse groove at the third abdominal somite, were observed in four specimens that were genetically confirmed as P. japonicus. This finding is novel within the P. japonicus taxonomical reports. Additionally, this study updates the documentation of spiny lobsters inhabiting South Korean waters as P. longipes and P. homarus homarus were recorded for the first time in this region.

Morphology of the complete larval stages of Portunus segnis (Forskål, 1775) (Crustacea: Brachyura: Portunidae) from the Gulf of Aqaba, Saudi Arabia

Zootaxa ◽  
2019 ◽  
Vol 4638 (2) ◽  
pp. 199-218
Author(s):  
ALI M. AL-AIDAROOS ◽  
A. A. J. KUMAR ◽  
AHMED E. AL-HAJ ◽  
ABDULMOHSIN AL-SOFYANI ◽  
MICHAEL P. CROSBY ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Species Complex ◽  
Unique Feature ◽  
Ovigerous Female ◽  
The Other ◽  
Gulf Of Aqaba ◽  
Portunus Pelagicus ◽  
Larval Stages ◽  
First Time ◽  
Portunus Segnis

Portunus pelagicus (Linnaeus, 1758) sensu lato has been recognized as a species complex comprising four species. Of these four species, the larval stages of all except Portunus segnis (Forskål, 1775), have been described. The larvae of P. segnis, hatched from an ovigerous female, caught in the Gulf of Aqaba, were cultured in the laboratory up to the megalopa stage. All the larval stages are described herein for the first time. The number of aesthetascs of the antennules of all the zoeal stages of P. segnis differs from those of the larvae of the other species of the P. pelagicus species complex. In the telson forks of zoea I–IV of P. segnis, there is a pair of ventral spines and two pairs of dorsal spines, whereas in the other P. pelagicus species complex larvae, there is a pair each of ventral and dorsal spines. Another unique feature, in the megalopa of P. segnis, are two endopod hooks in pleonites I–V. Different zoeal and megalopal stages of P. segnis can be distinguished clearly from the other P. pelagicus species complex larvae based on the number of setae and patterns of different appendages. 

scholarly journals Associations of Phoretic Mites on Bark Beetles of the Genus Ips in the Black Sea Mountains of Turkey

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 516
Author(s):  
Cihan Cilbircioğlu ◽  
Marta Kovač ◽  
Milan Pernek
Keyword(s):  
Black Sea ◽  
Bark Beetles ◽  
Pinus Nigra ◽  
Mite Species ◽  
Tree Bark ◽  
The Black Sea ◽  
Forest Pests ◽  
Larval Stages ◽  
Suitable Habitats ◽  
First Time

Phoretic mites use bark beetles for transportation to new, suitable habitats. Some phoretic mites act as predators and parasitoids of the bark beetles’ immature stages, especially egg and early larval stages, and are potential agents for the biological control of scolytine forest pests. Mites live very frequently in relationships with other invertebrates. Many are found in association with various species of bark beetles. Here, a total of 41 specimens of different bark beetles of the genus Ips (Ips acuminatus, Ips sexdentatus and Ips typographus) were studied for presence, species composition, and abundance of phoretic mites. The beetles were collected on dead wood and parts of tree bark of Pinus nigra, Pinus sylvestris and Picea abies in the Black Sea Mountains in Kastamonu and Artin Province of Turkey. A total of nine mite species were found, including Dendrolaelaps quadrisetus, Ereynetes sp., Histiostoma piceae, Paraleius cf. leontonychus, Pleuronectocelaeno barbara., Proctolaelaps hystricoides, Schizostethus simulatrix, Trichouropoda lamellosa and Uroobovellaipidis. All species are identified for the first time within Turkish fauna.

scholarly journals Microfluidic-based imaging of complete C. elegans larval development

2021 ◽  
Author(s):  
Simon Berger ◽  
Silvan Spiri ◽  
Andrew deMello ◽  
Alex Hajnal
Keyword(s):  
Imaging Method ◽  
Cover Glass ◽  
Vulval Development ◽  
C Elegans ◽  
Larval Stages ◽  
Seam Cell ◽  
Time Observation ◽  
On Chip ◽  
First Time

Several microfluidic-based methods for long-term C. elegans imaging have been introduced in recent years, allowing real-time observation of previously inaccessible processes. The ex-isting methods either permit imaging across multiple larval stages without maintaining a stable worm orientation, or allow for very good immobilization but are only suitable for shorter experiments. Here, we present a novel microfluidic imaging method, which allows parallel live-imaging across multiple larval stages, while delivering excellent immobilization and maintaining worm orientation and identity over time. This is achieved by employing an array of microfluidic trap channels carefully tuned to maintain worms in a stable orienta-tion, while allowing growth and molting to occur. Immobilization is supported by an active hydraulic valve, which presses worms onto the cover glass during image acquisition, with the animals remaining free for most of an experiment. Excellent quality images can be ac-quired of multiple worms in parallel, with little impact of the imaging method on worm via-bility or developmental timing. The capabilities of this methodology are demonstrated by observing the hypodermal seam cell divisions and, for the first time, the entire process of vulval development from induction to the end of morphogenesis. Moreover, we demonstrate RNAi on-chip, which allows for perturbation of dynamic developmental processes, such as basement membrane breaching during anchor cell invasion.

scholarly journals Associations of Phoretic Mites on Bark Beetles of the Genus Ips in the Black Sea Mountains of Turkey

2021 ◽  
Author(s):  
Cihan Cilbircioğlu ◽  
Marta Matek Kovač ◽  
Milan Pernek
Keyword(s):  
Black Sea ◽  
Bark Beetles ◽  
Pinus Nigra ◽  
Mite Species ◽  
Tree Bark ◽  
The Black Sea ◽  
Forest Pests ◽  
Larval Stages ◽  
Suitable Habitats ◽  
First Time

Phoretic mites use bark beetles for transportation to new, suitable habitats. Some phoretic mites act as predators and parasitoids of the bark beetles’ immature stages, especially egg and early larval stages, and are potential agents for the biological control of scolytine forest pests. One of the most numerous and largest mite orders is Mesostigmata which live very frequently in relationships with other invertebrates. Many are found in association with various species of bark beetles. Here, a total of 41 specimens of different bark beetles of the genus Ips (I. acuminatus, I. sexdentatus and I. typographus) were studied for presence, species composition, and abundance of phoretic mites. The beetles were collected on dead wood and parts of tree bark of Pinus nigra, P. slyvestris and Picea abies in the Black Sea Mountains in Kastamonu and Artin Province of Turkey. A total of 9 mite species in 2 genera were found, including Dendrolaelaps quadrisetus, Ereynetes sp., Histiostoma piceae, Paraleius cf. leontonychus, Pleuronectocaeleno barbara., Proctolaelaps hystricoides, Schizostethus simulatrix, Trichouropoda lamellosa and Urobovella ipidis. All species and genera are identified for the first time within Turkish fauna.

First record of the symbiotic palaemonid shrimp Hamodactylus boschmai Holthuis, 1952 (Decapoda, Caridea) from Korea

Crustaceana ◽  
2021 ◽  
Vol 94 (1) ◽  
pp. 115-129
Author(s):  
Jin-Ho Park ◽  
Damin Lee ◽  
Taeseo Park
Keyword(s):  
First Record ◽  
Cutting Edge ◽  
Proximal Segment ◽  
Mitochondrial Cytochrome ◽  
Gene Sequences ◽  
Korean Waters ◽  
Oxidase Subunit ◽  
Single Tooth ◽  
First Time ◽  
I Gene

Abstract Here, the symbiotic palaemonid shrimp Hamodactylus boschmai is recorded from Korean waters for the first time, based on specimens collected from different invertebrate hosts by trimix diving at depths of between 45 and 60 m in Jejudo Island. This species can readily be distinguished from its congeners by the presence of a distinct supraorbital tooth, the proximal segment of the antennular peduncle having a single tooth on the distolateral margin, the presence of a denticulate lamina along the entire cutting edge of the fingers of the first pereiopod chela, and the chela of the second pereiopods having a strongly hooked tip on the movable finger. An illustrated description, colour photographs, and a comparison of partial mitochondrial cytochrome c oxidase subunit I gene sequences are provided.

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.

First records of six species of mantis shrimp (Stomatopoda) from Korea with a key to the Korean species

Crustaceana ◽  
2019 ◽  
Vol 92 (7) ◽  
pp. 853-868
Author(s):  
Hee-Seung Hwang ◽  
Shane T. Ahyong ◽  
Won Kim
Keyword(s):  
Scuba Diving ◽  
Commercial Fishing ◽  
Mantis Shrimp ◽  
Korean Waters ◽  
First Time

Abstract The Stomatopoda of Korea have, in general, been poorly studied, with eight species recorded to date. A recent study of stomatopods collected by SCUBA diving and commercial fishing trawlers from Korean waters, however, resulted in the discovery of first records of six species from the study area. Among them, four belong to the superfamily Squilloidea Latreille, 1802 [Levisquilla inermis (Manning, 1965), Levisquilla jurichi (Makarov, 1979), Anchisquilla fasciata (De Haan, 1844), and Cloridopsis scorpio (Latreille, 1828)], and two belong to the Lysiosquilloidea Giesbrecht, 1910, one each in Tetrasquillidae Manning & Camp, 1993 [Acaenosquilla latifrons (De Haan, 1844)] and Nannosquillidae Manning, 1980 [Acanthosquilla multifasciata (Wood-Mason, 1895)]. Thus, fourteen species of Stomatopoda are now known from Korea. The superfamily Lysiosquilloidea is reported for the first time from Korean waters. A key to the species of Korean mantis shrimps is provided.

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.

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