APHOTOMARINE

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.

A-P-H-O-T-O Wildlife Stock Image Library
Jaera (Jaera) forsmani Bocquet, 1950 - A janirid isopod (Isopoda images)
Janirid isopod
Jaera (Jaera) forsmani
- dorsal view 1

Janirid isopod
Jaera (Jaera) forsmani
- lateral view 1

Janirid isopod
Jaera (Jaera) forsmani
- ventral view 1

Janirid isopod
Jaera (Jaera) forsmani
- with 0.1mm division rule 1

Janirid isopod
Jaera (Jaera) forsmani
- pereopod 7 -1

Janirid isopod
Jaera (Jaera) forsmani
- pereopods 1 and 2 -1

Janirid isopod
Jaera (Jaera) forsmani
- praeoperculum 1

Janirid isopod
Jaera (Jaera) forsmani
- washings / sample from crevice where specimen was found 1

Janirid isopod
Jaera (Jaera) forsmani
- habitat / location 1

A 2.3mm male specimen was found in a rock crevice on the lowershore at Little London reef, Marazion, Cornwall, 09.12.17.

In Jaera (Jaera) forsmani pereopods (legs) 1-4 are sparsely covered with curved setae on the propus, carpus and merus segments. Perepods 6 and 7 have well developed carpal spines. In comparison Jaera (Jaera) albifrons has prominent lobes that are fringed with spines on the carpus of pereopods 6 and 7. The male praeoperculum of Jaera (Jaera) forsmani is simlar to Jaera (Jaera) albifrons so cannot be used to distinguish the species. Jaera (Jaera) forsmani is the least tolerant of freshwater of the Jaera albifrons group.

Species was kindly verified by the isopod expert Dr. David Holdich.

APHOTOMARINE supports open source data recording and sharing for the benefit of wildlife, recorders, research, science and education. The project recommends the following websites and works with the following bodies and organisations.

Marine Biological Association MBA

The Marine Biological Association or MBA, based in Plymouth, is one of the world’s longest-running societies dedicated to promoting research into our oceans and the life they support. Since 1884 the MBA has been providing a unified, clear, independent voice on behalf of the marine biological community.It has a growing membership in over 40 countries.

NBN National Biodiversity Network

The National Biodiversity Network or NBN is a charity that supports open source data sharing and recording supporting conservation, science and education. "Why do recorders need open source?". Simply because it supports the core values of wildlife recording and the free use of records and data over a very wide network that includes partners like the Natural History Museum.

The taxonomy used here is based on that of the following database, which is also used by the MBA, NHM and the NBN.

World Register of Marine Species or WoRMS

The World Register of Marine Species or WoRMS.

Jaera forsmani janiridae janirid isopod Marine Animal Resembling Woodlouse Isopoda Images
The main objective of this website is in furthering environmental awareness and education through the medium of photography. To increase awareness and access to the wildlife of the region and help
people find and identify it. Sometimes the difference between species is obvious but many species can only be determined by observing microscopic characteristics that are specific to any one species.