Reproductive Characteristics of the Hermit Crab Pagurus middendorffii Brandt, 1851 (Decapoda: Paguridae) from Peter the Great Bay, Sea of Japan

Some aspects of the reproductive biology of the widespread boreal hermit crab Pagurus middendorffii Brandt, 1851 were studied. Samples were collected monthly from November 2022 to November 2023 at a depth of 1–3 m in Zhitkov Bay (Russky Island, Peter the Great Bay, Sea of Japan). About 38% of the sp...

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Bibliographic Details
Published in:Russian journal of marine biology 2024-10, Vol.50 (5), p.247-256
Main Author: Kornienko, E. S.
Format: Article
Language:English
Subjects:
Animal embryos
Aquatic crustaceans
Biomedical and Life Sciences
Carapace
Comparative analysis
Crustaceans
Decapoda
Diapause
Embryogenesis
Embryonic development
Embryonic growth stage
Females
Freshwater & Marine Ecology
Incubation
Incubation period
Life Sciences
Low temperature
males
Marine crustaceans
Original Papers
Pagurus
Pagurus middendorffii
Peter I, Tsar of Russia (1672-1725)
Sea of Japan
Spawning
species
temperature
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Summary:Some aspects of the reproductive biology of the widespread boreal hermit crab Pagurus middendorffii Brandt, 1851 were studied. Samples were collected monthly from November 2022 to November 2023 at a depth of 1–3 m in Zhitkov Bay (Russky Island, Peter the Great Bay, Sea of Japan). About 38% of the specimens were infected with parasitic crustaceans. Among healthy hermit crabs, the size of the calcified part of the carapace ( SL ) ranged from 1.9 to 6.6 mm (average 4.53 ± 0.95) for males, from 1.9 to 5.5 mm (average 3.67 ± 0.68) for females, and from 1.9 to 5.3 mm (average 3.56 ± 0.62 mm) for ovigerous females. The male to female ratio during the study period varied from 0.6 to 4.0 with an average of 2.2. Spawning commenced in late October and ceased in late November; the incubation period lasted 6.5 months and the embryonic diapause was absent. Repeated spawning was not observed. A comparative analysis of the reproductive characteristics of hermit crabs from different regions showed that changes in the temperature regime influence the timing of spawning and the duration of the incubation period, which significantly increases due to slow embryonic development at low temperatures in some species and due to embryonic diapause in others.
ISSN:1063-0740
1608-3377
DOI:10.1134/S1063074024700226