Halosydna johnsoni   (Darboux, 1899)

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Peru country information

Common names:
Occurence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from End Needle (05°48'South: 81°06'West).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/pe.html
National Fisheries Authority:
Occurences: Occurence Point map
Main Ref: Salazar-Vallejo, S.I. and M.H. Londoño-Mesa, 2004
National Database:

Common names from other countries

... more

Main reference

Size / Weight / Age

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

Demersal

Climate / Range

Tropical

Distribution

Eastern Pacific: Mexico, Peru and Galapagos Islands.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Biology     Glossary (e.g. epibenthic)

Members of the class Polychaeta are mostly gonochoric (sexual). Mating: Females produce a pheromone attracting and signalling the males to shed sperm which in turn stimulates females to shed eggs, this behavior is known as swarming. Gametes are spawned through the metanephridia or body wall rupturing (termed as "epitoky", wherein a pelagic, reproductive individual, "epitoke", is formed from a benthic, nonreproductive individual, "atoke"). After fertilization, most eggs become planktonic; although some are retained in the worm tubes or burrowed in jelly masses attached to the tubes (egg brooders). Life Cycle: Eggs develop into trocophore larva, which later metamorph into juvenile stage (body lengthened), and later develop into adults (Ref. 833).

IUCN Red List Status (Ref. 120744)

  Not Evaluated 

Threat to humans

Human uses


More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
References
Biblio
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
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Ciguatera
Speed
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Gill area
Otoliths
Brains
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Tools

Special reports

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Internet sources

Estimates of some properties based on models

Resilience (Ref. 69278)
Vulnerability (Ref. 59153)
Price category (Ref. 80766)
(0 of 100)