Benthonella tenella ( Jeffreys, 1869 )

Oliver, Joan Daniel, Gofas, Serge, Urgorri, Victoriano, Díaz-Agras, Guillermo & Templado, José, 2022, Rissoidae gastropods of the outer continental shelf and slope off Galicia (NW Spain), Zootaxa 5196 (1), pp. 1-45 : 29-30

publication ID

https://doi.org/ 10.11646/zootaxa.5196.1.1

publication LSID

lsid:zoobank.org:pub:1B12892E-D68F-4BFE-8E9A-7F19E220E73D

DOI

https://doi.org/10.5281/zenodo.7231957

persistent identifier

https://treatment.plazi.org/id/03D37947-4872-FFED-A0B1-FC17462F02EA

treatment provided by

Plazi

scientific name

Benthonella tenella ( Jeffreys, 1869 )
status

 

Benthonella tenella ( Jeffreys, 1869) View in CoL

( Fig. 17 View FIGURE 17 )

Material examined. (15 empty shells and 9 with soft parts in 7 samples): SPAIN • 3 sh + 2 spc; 43° 57.030′N, 008° 54.795′W to 43° 57.248′N, 008° 54.133′W; 1191– 1132 m; 08–15 SeP. 2002; DIVA-Artabria I AT-1000 GoogleMaps 2 sPc; 43° 35.451′N, 008° 34.432′W to 43° 34.810′N, 008° 35.407′W; 153– 151 m; 08–15 SeP. 2002; DIVA-Artabria I EBS-150 GoogleMaps 1 sh + 3 sPc; 43° 48.587′N, 008° 51.402′W to 43° 49.545′N, 008° 51.197′W; 610– 598 m; 10–20 SeP. 2003; DIVA-Artabria I EBS-600 GoogleMaps 4 sPc + 7 sh; 42° 45.9′N, 009° 41.68′W to 42° 47.00′N, 009° 42°.12′W; 1499– 1373 m; 15–30 Sep. 2008; DIVA-Artabria II EBS-27 GoogleMaps 3 sh; 42° 38.21′N, 009° 51.46′W to 42° 39.45′N, 009° 50.73′W; 1961–1971 m; 15–30 Sep. 2008; DIVA-Artabria II EBS-28 GoogleMaps 1 sPc; 42° 27.66′N, 009° 46.13′W to 42° 29.08′N, 009° 45.31′W; 2033–2091 m; 15–30 SeP. 2008; DIVA-Artabria II EBS-29 GoogleMaps 1 sh; 42° 29.55′N, 01010.5′W to 42° 30.08′N, 01° 009.57′W; 2798– 2765 m; 14–25 Feb. 2009; FORSAGAL EBS-4 GoogleMaps .

Remarks. Benthonella tenella is the most common Atlantic and Mediterranean bathyal rissoid species, with the widest geographic and bathymetric range of all. It is distributed on both sides of the Atlantic, from Iceland to the Caribbean in the west and to the Macaronesian islands in the east, and in the whole Mediterranean basin, being also patchily present in the southern Atlantic ( Bouchet & Warén 1993; Hoffman et al. 2011; Sysoev 2014; Negri & Corselli 2016). It is also common in the northeastern Atlantic seamounts ( Gofas 2007). Its planktotrophic development with ontogenetic vertical migration allows the potential for large-scale dispersal ( Rex & Etter 1990). Nevertheless, in the samples studied it has not been very abundant, having been found between 1400 and 2100 m. The few shells found in the samples belong to the smooth morph ( Fig. 17a View FIGURE 17 ). Multispiral protoconch with just over three whorls. The embryonic whorls show three fine spiral lines and microgranules in between ( Figs. 17d–e, g View FIGURE 17 ). Subsequent whorls (protoconch II) with two suprasutural spiral threads ( Figs. 17b, f View FIGURE 17 ), the upper one like a keel framing a flattened shoulder ( Fig. 17c View FIGURE 17 ).

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