The larval development of the hermit crabAreopaguristes nigroapiculus(Decapoda: Anomura: Diogenidae) reared under laboratory conditions

2011 ◽  
Vol 91 (5) ◽  
pp. 1031-1039 ◽  
Author(s):  
Elena S. Kornienko ◽  
Olga M. Korn

The larval development of the hermit crabAreopaguristes nigroapiculus(Komai, 2009) (Decapoda: Anomura: Diogenidae) is described and illustrated from the material reared in the laboratory. The development included three zoeal and a single megalopal stages. At 22–25°C, megalop ofA. nigroapiculuswas attained 6–9 days after hatching. The present paper is the first description of the complete larval development in the genusAreopaguristes. Morphological characters of zoeas and megalop ofA. nigroapiculusare compared with those described for the closely relatedPaguristesspecies. The comparison on the zoeal characters revealed thatA. nigroapiculusis distinguished fromPaguristesspecies by the absence of anterolateral carapace spines and by the fused fourth telson process in zoea III. These two features are possible generic characters ofAreopaguristes. In the rest of larval characters,A. nigroapiculusagree well withPaguristesspecies having three zoeal stages. In the plankton of Peter the Great Bay, the larvae ofA. nigroapiculussporadically occurred only in July and August, at depths of 3–45 m and surface water temperatures of 18–22°C.

Zootaxa ◽  
2020 ◽  
Vol 4869 (2) ◽  
pp. 275-280
Author(s):  
IVAN MARIN

The sublittoral hermit crab Pagurus trigonocheirus (Stimpson, 1858) (Crustacea: Decapoda: Paguridae) is recorded from depths of 80–200 m along the continental coastline of the Peter the Great Bay, Sea of Japan. The exact sampling localities as well as photographs of live specimens are presented in the paper. Doubtful records of hermit crabs from the southern Russian coastline of the Sea of Japan are also discussed. 


Zootaxa ◽  
2008 ◽  
Vol 1693 (1) ◽  
pp. 1 ◽  
Author(s):  
OLGA M. KORN ◽  
ELENA S. KORNIENKO ◽  
TOMOYUKI KOMAI

A redescription of adult and larval stages of diogenid hermit crab Diogenes nitidimanus Terao, 1913 is presented. Morphological similarities suggest that D. nitidimanus is allied to D. avarus Heller, 1865, D. granulatus Miers, 1880, D. ovatus Miers, 1881, D. pugilator (Roux, 1838) and D. rectimanus Miers, 1884. Diogenes nitidimanus can be distinguished from the latter four species by different armature or ornamentation of the left chela and/or the shape of the ambulatory dactyli. Zoeal and megalopal stages of this species are described from laboratory-reared material hatched from parental individuals collected from Peter the Great Bay, Russian Far East. Larval development in the Russian population is compared with that described for a population of this species from southern Japan. The developmental morphology between the two populations is generally similar, but some minor differences, which might be attributable to variability, are found. Larvae of D. nitidimanus are morphologically closest to those of D. avarus among eight species of Diogenes for which larval descriptions are available.


2012 ◽  
Vol 37 (11-12) ◽  
pp. 775-782 ◽  
Author(s):  
P. Ya. Tishchenko ◽  
V. B. Lobanov ◽  
T. A. Gulenko ◽  
A. P. Nedashkovskii ◽  
O. S. Popov ◽  
...  

2000 ◽  
pp. 50-61 ◽  
Author(s):  
S. V. Osipov ◽  
V. P. Verkholat

Two territories on the western coast of Peter the Great Bay were mapped in the large scale. The geobotanical mapping means revealing and displaying the essential regularities of vegetation cover. Both the spatial and temporal regularities of vegetation under natural and anthropogenic influences are well pronounced in the territory under consideration. The concept of the vegetation spatial unit (vegetation complexes) was applied as a basis for mapping. The maps and their legend were worked out as a system of vegetation combination types (vegetation combination is a spatial unit of the supracoenotic level). Such categories, as vegetation of tops and slopes, lowlands and river valleys, sea coasts reflect maximal contrasts in vegetation cover, so they are the highest level divisions of the map legend. Types of succession series and stages of series are developed for construction of the second and third levels of the legend. Communities, similar in ecotope, total species composition, saplings and some other characteristics, are referred to one type of series. 5 types of series have been distinguished: dry, fresh, moist, very moist, wet. The main factor of dynamics in considered territory is fire and the series are mainly pyrogeneous. Series are presented as sequences of vegetation stages. The vegetation stages for tops and slopes are: closed low forest — open low woodland — shrub thicket with saplings — meadow with saplings, for lowlands and river valleys they are: open low woodland — thicket of saplings — meadow or mire with saplings.


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