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Flatfish (Pleuronectidae) on the menu in 16th century Abbeville (France). The contribution of osteometrics and stable isotopes to species and fishing origin identification.

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Názov: Flatfish (Pleuronectidae) on the menu in 16th century Abbeville (France). The contribution of osteometrics and stable isotopes to species and fishing origin identification.
Alternate Title: Les poissons plats (Pleuronectidae) au menu à Abbeville au XVIe siècle (France). L'apport de l'ostéométrie et des isotopes stables à l'identification des espèces et des zones de pêche.
Autori: DUFOUR, Elise1 elise.dufour@mnhn.fr, CLAVEL, Benoit1 benoit.clavel@mnhn.fr, TOMBRET, Olivier1 olivier.tombret@mnhn.fr, SIMON, Laurent2 laurent.simon@univ-lyon1.fr
Zdroj: Cybium: International Journal of Ichthyology. 3/31/2025, Vol. 49 Issue 1, p5-28. 24p.
Predmety: *EUROPEAN flounder, *GROUNDFISHES, *PLAICE, *STABLE isotope analysis, *ARCHAEOLOGICAL assemblages
Abstract (English): Pleuronectidae (flatfish) are not always identifiable to the species level on the basis of isolated bones found in archaeological assemblages, and one of the most targeted species in northwestern Europe, flounder (Platichthys flesus), has an extremely large plasticity in habitat use. These issues limit the interpretation of the presence of flatfish bones with regard to fishing ground exploitation and fish trade in the past. This study aims to infer the fishing grounds of flatfish consumed at the site of Abbeville Chaussée du Bois, in northwestern france, dated to the 16th century, based on the analysis of examples of two unpaired bones, the first anal-fin pterygiophore or "os anale" and the urohyal. The city of Abbeville was an important port during Middle Ages and the Early Modern period. We used an integrated approach combining osteology, osteometrics (n = 84), and stable isotope analysis of bone collagen (n = 31). We were able to confirm the presence of both flounder and plaice (Pleuronectes platessa). We estimated their size and age at capture thanks to metric models that we developed for modern plaice (n = 34) and flounder (n = 55) from in- and offshore environments in the Somme estuary. The presence of only adult fish remains at the site and the ethology of the two species exclude exploitation of only the immediate vicinity of the city, i.e., the River Somme itself or the very non-saline part of the estuary close to the river outlet. Although the δ13C and δ15N values of the flounder and plaice from the site partially overlap, the two groups present distinctive δ13C and δ15N values and bi-isotope variability. Their isotope signatures were compared with those of archaeological marine (n = 14) and freshwater (n = 26) fish remains used as references. The flatfish identified from the site had spent time living in habitats ranging from marine to brackish or even fresh-water. Our combined approach suggests the contemporaneous exploitation of several fishing grounds or alternatively marine waters at spawning time to provide the menu served at the site. Our approach appears a promising means to explore the trade in flatfish inland during historical times. [ABSTRACT FROM AUTHOR]
Abstract (French): Les Pleuronectidae (poissons plats) sont souvent difficiles à identifier au niveau spécifique à partir des os iso-lés trouvés dans les assemblages archéologiques, en particulier le flet (Platichthys flesus), dont la plasticité dans l'utilisation des habitats est très grande complique les analyses. Ces facteurs limitent les conclusions sur l'exploitation des lieux de pêche et le commerce du poisson dans le passé. Cette étude vise à identifier les zones de pêche des poissons plats consommés sur le site d'Abbeville "Chaussée du Bois", dans le nord-ouest de la France, au XVIe siècle, en se basant sur l'analyse d'os impairs, tels que le premier ptérygiophore anal ou os anale et l'urohyal. La ville d'Abbeville était un port important au Moyen Âge et au début de l'époque moderne. Nous avons utilisé une approche intégrée combinant l'ostéologie, l'ostéométrie (n = 84) et l'analyse des isotopes stables du collagène osseux (n = 31). La présence de flets et de carrelets (Pleuronectes platessa) a été confirmée, avec leur taille et leur âge à la capture estimés à l'aide de modèles métriques développés à partir de carrelets (n = 34) et de flets (n = 55) actuels de l'estuaire de la Somme. La présence sur le site de restes de poissons uniquement adultes et l'éthologie des deux espèces excluent l'exploitation des seuls abords immédiats de la ville, c'est-à-dire la Somme elle-même ou la partie très dessalée de l'estuaire proche de l'exutoire du fleuve. Bien que les valeurs δ13C et δ15N du flet et du carrelet du site se chevauchent partiellement, les deux groupes présentent des valeurs δ13C et δ15N et une variabilité bi-isotopique distinctes. Leurs signatures isotopiques ont été comparées à celles de restes de poissons archéologiques marins (n = 14) et d'eau douce (n = 26) utilisés comme références. Les poissons plats identifiés sur le site ont vécu dans des habitats de salinité marine à saumâtre ou même d'eau douce. Afin de fournir le poisson servi à Abbeville, notre approche combinée suggère l'exploitation contemporaine de plusieurs zones de pêche ou alternativement d'eaux marines au moment du frai. Notre approche semble être un moyen prometteur d'explorer le commerce des poissons plats à l'intérieur des terres aux périodes historiques. [ABSTRACT FROM AUTHOR]
Databáza: Academic Search Index
Popis
Abstrakt:Pleuronectidae (flatfish) are not always identifiable to the species level on the basis of isolated bones found in archaeological assemblages, and one of the most targeted species in northwestern Europe, flounder (Platichthys flesus), has an extremely large plasticity in habitat use. These issues limit the interpretation of the presence of flatfish bones with regard to fishing ground exploitation and fish trade in the past. This study aims to infer the fishing grounds of flatfish consumed at the site of Abbeville Chaussée du Bois, in northwestern france, dated to the 16th century, based on the analysis of examples of two unpaired bones, the first anal-fin pterygiophore or "os anale" and the urohyal. The city of Abbeville was an important port during Middle Ages and the Early Modern period. We used an integrated approach combining osteology, osteometrics (n = 84), and stable isotope analysis of bone collagen (n = 31). We were able to confirm the presence of both flounder and plaice (Pleuronectes platessa). We estimated their size and age at capture thanks to metric models that we developed for modern plaice (n = 34) and flounder (n = 55) from in- and offshore environments in the Somme estuary. The presence of only adult fish remains at the site and the ethology of the two species exclude exploitation of only the immediate vicinity of the city, i.e., the River Somme itself or the very non-saline part of the estuary close to the river outlet. Although the δ13C and δ15N values of the flounder and plaice from the site partially overlap, the two groups present distinctive δ13C and δ15N values and bi-isotope variability. Their isotope signatures were compared with those of archaeological marine (n = 14) and freshwater (n = 26) fish remains used as references. The flatfish identified from the site had spent time living in habitats ranging from marine to brackish or even fresh-water. Our combined approach suggests the contemporaneous exploitation of several fishing grounds or alternatively marine waters at spawning time to provide the menu served at the site. Our approach appears a promising means to explore the trade in flatfish inland during historical times. [ABSTRACT FROM AUTHOR]
ISSN:03990974
DOI:10.26028/cybium/2025-006