On the Existence of an Anterior Rudimentary Gill in Astacus fluviatilis, Fabr

Moseley, M.

doi:10.1242/jcs.s2-48.191.359

Journal of Cell Science

1904

DOI: 10.1242/jcs.s2-48.191.359

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On the Existence of an Anterior Rudimentary Gill in Astacus fluviatilis, Fabr

M. Moseley¹

Abstract: The theoretical gill formula for the Decapod Crustacea is four on each side of each somite, corresponding to the three maxillipeds and the five legs—that is, Somites VII to XIV, counting the ophthalmic somite as No. 1.

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Gill Morphology and Formulae of European Astacidae

Kawai¹,

Policar

Kouba

2021

Freshwater Crayfish

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We examined gills (podobranchs, arthrobranchs and pleurobranchs) from five European Astacidae (Austropotamobius pallipes, Austropotamobius torrentium, Astacus astacus, Pontastacus leptodactylus and Pontastacus pachypus) to assess the relationships between their phylogeny and gill morphology and formulae. In addition, we checked for the presence or absence of pleurocoxal lappets. The morphology of the gills and associated structures was similar in all examined European astacid species except for three rudimentary pleurobranchs found in P. pachypus. In European Astacidae and Cambaroididae, the pleurocoxal lappets are absent but are present in the American Astacidae, Cambaridae and Parastacidae. The number of pleurobranchs decreases from the most primitive Parastacidae to the most advanced Cambaridae. Nevertheless, although the most primitive parastacid crayfish and the most advanced Cambaridae all have pleurocoxal lappets, they are absent in European Astacidae and Cambaroididae, which suggests that a reversible gill morphology has occurred in crayfish evolution.

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Gill Morphology and Formulae of European Astacidae

Kawai¹,

Policar

Kouba

2021

Freshwater Crayfish

View full text Add to dashboard Cite

show abstract

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On the Existence of an Anterior Rudimentary Gill in Astacus fluviatilis, Fabr

Abstract: The theoretical gill formula for the Decapod Crustacea is four on each side of each somite, corresponding to the three maxillipeds and the five legs—that is, Somites VII to XIV, counting the ophthalmic somite as No. 1.

Cited by 1 publication

References 0 publications

Gill Morphology and Formulae of European Astacidae

Gill Morphology and Formulae of European Astacidae

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