Population Structure and Energetics of the Bopyrid Isopod Parasite Orthione griffenis in Mud Shrimp Upogebia pugettensis

2008 ◽  
Vol 28 (2) ◽  
pp. 228-233 ◽  
Author(s):  
Andrew E. Smith ◽  
John W. Chapman ◽  
Brett R. Dumbauld
Keyword(s):  
Population Structure ◽  
Upogebia Pugettensis ◽  
Mud Shrimp

Physiological consequences of parasite infection in the burrowing mud shrimp, Upogebia pugettensis, a widespread ecosystem engineer

2012 ◽  
Vol 63 (1) ◽  
pp. 60 ◽  
Author(s):  
Michele Repetto ◽  
Blaine D. Griffen
Keyword(s):  
Ecosystem Engineer ◽  
Parasite Infection ◽  
Negative Effects ◽  
Previous Theory ◽  
North West ◽  
Mixed Support ◽  
The Pacific ◽  
Upogebia Pugettensis ◽  
Energetic State ◽  
Mud Shrimp

The burrowing mud shrimp, Upogebia pugettensis, is an important ecosystem engineer throughout bays and estuaries along the Pacific coast of North America. Populations of U. pugettensis have recently declined throughout its range. A likely reason for this decline is the arrival of an invasive bopyrid isopod parasite, Orthione griffenis, which has colonised the system and increased in prevalence. We tested the following three hypotheses regarding this host–parasite system: (1) parasite infection is correlated with the volume of water processed by the host; (2) infection negatively affects host’s energetic state; and (3) infection causes feminisation in male hosts. We used several physiological and morphological measures to quantify the effects of this parasite infection on U. pugettensis. The parasite appears to have different physiological effects on male and female hosts. Our study provides mixed support for the previous theory that predicted the mechanistic interactions between this host and its new parasite. Recent examples from other systems have demonstrated that invasive parasites can have far-reaching influences when they infect ecosystem engineers. Given the negative effects of O. griffenis on U. pugettensis, this invasive parasite may have similarly large impacts on Pacific North-west estuaries throughout its invaded range.

Ecological periodic tables for nekton usage of four US Pacific Northwest estuarine habitats

2010 ◽  
Vol 67 (12) ◽  
pp. 1957-1967 ◽  
Author(s):  
Steven P. Ferraro ◽  
Faith A. Cole
Keyword(s):  
Species Richness ◽  
Pacific Northwest ◽  
Ghost Shrimp ◽  
Neotrypaea Californiensis ◽  
Nekton Community ◽  
Upogebia Pugettensis ◽  
Mud Shrimp ◽  
Intertidal Habitats ◽  
Scaling Analyses ◽  
Shrimp Abundance

We compared the species composition and abundance of the total nekton community, using the Bray–Curtis similarity coefficient, and mean total nekton, fish and crab species richness, abundance and biomass, and shrimp abundance across four intertidal habitats in a US Pacific Northwest estuary: (i) eelgrass ( Zostera marina ); (ii) burrowing mud shrimp ( Upogebia pugettensis ); (iii) burrowing ghost shrimp ( Neotrypaea californiensis ); and (iv) unvegetated sand. Field sampling was conducted during daytime high tides, and was quantitative, stratified-by-habitat, randomized, and estuary-wide. More than 10 000 nekton specimens belonging to 64 taxa were collected in 454 samples during 10 sampling periods, each approximately one-month-long (from June to November), over 3 years (1998–2000). Non-metric multidimensional scaling analyses revealed annually recurring across-habitat patterns in total nekton Bray–Curtis similarity. Two-way (habitat, year) analyses of variance revealed annually recurring across-habitat patterns on 10 indicators of nekton-habitat quality and preference. Total nekton species richness, abundance, and biomass were, respectively, on average, 8 ×, 25 ×, and 25× greater in eelgrass, 4 ×, 6 ×, and 5× greater in mud shrimp, and 2 ×, 3 ×, and 2× greater in ghost shrimp, than in sand habitat. Our findings validate the ecological relevance of our habitats to nekton, and suggest they can serve as elements in ecological periodic tables of nekton habitat usage.

Effects of a burrowing mud shrimp, Upogebia pugettensis (Dana), on abundances of macro-infauna

1991 ◽  
Vol 148 (2) ◽  
pp. 283-294 ◽  
Author(s):  
Martin H. Posey ◽  
Brett R. Dumbauld ◽  
David A. Armstrong
Keyword(s):  
Upogebia Pugettensis ◽  
Mud Shrimp
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