Corophiida Leach 1814

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

We find this amphipod amoung blades of the green alga Ulva, low intertidal, where it is beautifully camouflaged. Note the prominent compound eye. The bright red color is due to the visual pigment rhodopsin, present in all known animal photoreptors.

This female skeleton shrimp is climging to a red alga. She is brooding her young in the red dotted marsupium. Here five juveniles are climbing over their mother.

These are tube dwelling, nonnative amphipods introduced into harbors by shipping. Adult males, such as this one, leave the safety of their tube to cruise about in search of a receptive female.

This view shows the same individual from the dorsal aspect.

Caprella linearis;

Caprella kennerlyi posteriorCaprella kennerlyi posteriorSpecimens from: National Museum of Natural History, Washington DC: (NMNH) 25950

In this ventral view of the anterior half of the body, the gnathopods present at the anterior end of pereonite 1 and at the posterior end of pereonite 2 are visible. It has no gills on either of these pereonites.

Corophium; Slijkgarnaal.

Caprella kennerlyi anteriorCaprella kennerlyi anteriorSpecimens from: National Museum of Natural History, Washington DC: (NMNH) 25950

In this ventral view of the posterior half of the body (head is to right), the flat leaflike gills can be seen on midsections of pereonites 3 and 4 (part of the second gnathopods can be seen at the right on pereonite 2). Ahead of each gill is a small bump which is the vestigial pereopod for that pereonite. Pereonites 5-7 on the left have well-developed pereopods which act as claws to attach the animal to the eelgrass.

Jassa falcata; Jassa.

Caprella kennerlyi anteriorCaprella kennerlyi anteriorSpecimens from: National Museum of Natural History, Washington DC: (NMNH) 25950

skeleton shrimp and young

This view shows pereonites 3 and 4 closer up (the end of pereonite 2 with ghathopod 2 is visible to the right). On each of pereonites 3 and 4 a small, 1-article vestigial pereopod can be seen projecting from near the front of the article and a leaflike gill projects from farther back. Note the large dorsal, forward-directed spine on both pereonite 3 and 4.

Caprella horrida maleCaprella horrida maleSpecimens from: National Museum of Natural History, Washington DC: (NMNH) 25905; (NMNH) 112832; Series-Loubyrne; Hudson Bay; Trawl;