Ionella agassizi

Ionella agassizi   Bonnier, 1900

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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Malacostraca | Isopoda | Bopyridae

Environment: milieu / climate zone / depth range / distribution range Ecology

Benthic; depth range 0 - 10 m (Ref. 87801).  Temperate

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Southeast Pacific: Probably endemic to Chile.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 0.5 cm TL male/unsexed; (Ref. 87801); 1 cm TL (female)

Short description Morphology

Females are 0.8 to 1 cm in length and 1.1 to 1.5 cm in width. In both live and preserved specimens, they are whitish-yellowish in color and have tiny dark visible eyes. Its antennae is absent or strongly reduced and the pereopods are small. Oostegites large flaps forming completely enclosed marsupium, which contains thousands of embryos. Males on the other hand are 0.3 to 0.5 in length. They are whitish in color and have visibly small elongated eyes. Pereon segments with small pereopods. Pleotelson is very small, that looks like an inflated tubercle.

Biology     Glossary (e.g. epibenthic)

It is parasitic on ghost shrimp Neotrypaea uncinata found on sand flats, where it inhabits the branchial chamber (Ref. 87801).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Members of the order Isopoda are mostly gonochoric. Mating behavior: Mating usually occurs before and sometimes during the parturial molt. Sperm transfer is indirect. Life cycle: Eggs are brooded in the marsupium, which later hatch into manca postlarva before developing into adults.

Main reference References | Coordinator | Collaborators

Häussermann, V. and G. Försterra 2009 Marine benthic fauna of Chilean Patagonia. Santiago, Nature in Focus. 1000 p. (Ref. 87801)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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References

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Fishing Vulnerability (Ref. 71543): Low vulnerability (10 of 100).
Price category (Ref. 80766): Unknown.

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