Physical Description

Morphology

Other Physical Features: ectothermic ; bilateral symmetry

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Source: Animal Diversity Web

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Sexual Dimorphism

Males often larger than females because females grow more slowly after maturity, but the reverse also occurs; dwarf males common in parasitic isopods (Bopyrus) and some species (e.g. Jaera) have both small and large males; male appendages often specialized for detecting pheromones, sexual signals, sperm transport or grasping females. Female appendages often modified for holding eggs. Color differences are common in crabs, shrimp and stomatopods.
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Source: Fairbairn, 2013

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
Specimen Records:75710
Specimens with Sequences:55194
Specimens with Barcodes:48392
Species:5918
Species With Barcodes:4551
Public Records:46353
Public Species:3094
Public BINs:6611
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Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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Source: Barcode of Life Data Systems (BOLD)

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