WoRMS taxon details

Pennella Oken, 1815

135648  (urn:lsid:marinespecies.org:taxname:135648)

accepted
Genus
Pennella diodontis Oken, 1815 (type by monotypy)
Penicillus Kumar & Hameed, 1993 (Type species based on specimen consisting of copepod (Pennella) plus barnacle)
Species Pennella balaenoptera Koren & Danielssen, 1877
Species Pennella benzi Hogans, 2017
Species Pennella diodontis Oken, 1815
Species Pennella exocoeti (Holten, 1802)
Species Pennella filosa (Linnaeus, 1758)
Species Pennella hawaiiensis Kazachenko & Kurochkin, 1974
Species Pennella instructa Wilson C.B., 1917
Species Pennella makaira Hogans, 1988
Species Pennella remorae Murray, 1856
Species Pennella sagitta (Linnaeus, 1758)

Species Pennella biloba Kirtisinghe, 1932 (taxon inquirendum, according to Hogans, 1988)
Species Pennella elegans Gnanamuthu, 1957 (taxon inquirendum, according to Hogans, 1988)
Species Pennella incerta Brian, 1927 (taxon inquirendum, according to Hogans, 1988 (based on planktonic stages) )
Species Pennella longicauda Gnanamuthu, 1957 (taxon inquirendum, according to Hogans, 1988)
Species Pennella platycephalus Gnanamuthu, 1957 (taxon inquirendum, according to Hogans, 1988)
Species Pennella robusta Gnanamuthu, 1957 (taxon inquirendum, according to Hogans, 1988)
Species Pennella selaris Kirtisinghe, 1964 (taxon inquirendum)

Species Pennella costai Richiardi, 1880 (nomen nudum)
Species Pennella cylindrica (Brady, 1883) (nomen nudum)
Species Pennella elongata (Lubbock, 1860) (nomen nudum)
Species Pennella gracilis (Costa, 1847) (nomen nudum)
Species Pennella intricata (Costa, 1847) (nomen nudum)

Species Pennella antarctica Quidor, 1913 accepted as Pennella balaenoptera Koren & Danielssen, 1877 (synonym according to Hogans (1987))
Species Pennella anthonyi Quidor, 1913 accepted as Pennella balaenoptera Koren & Danielssen, 1877 (synonym according to Hogans (1987))
Species Pennella balaenopterae Koren & Danielssen, 1877 accepted as Pennella balaenoptera Koren & Danielssen, 1877 (spelling)
Species Pennella blainvillei (Le Sueur, 1824) accepted as Pennella exocoeti (Holten, 1802) (synonym according to Wilson (1917) )
Species Pennella bocconii Lamartinière, 1798 accepted as Pennella sagitta (Linnaeus, 1758) (synonym according to Wilson (1917) )
Species Pennella brachiata (Blainville, 1822) accepted as Pennella sagitta (Linnaeus, 1758) (synonym according to Wilson (1917) )
Species Pennella cervicornis Heegaard, 1943 accepted as Pennella diodontis Oken, 1815 (Probable synonym according to Hogans (1988))
Species Pennella cettei Quidor, 1913 accepted as Pennella balaenoptera Koren & Danielssen, 1877 (synonym according to Hogans (1987))
Species Pennella charcoti Quidor, 1913 accepted as Pennella balaenoptera Koren & Danielssen, 1877 (synonym according to Hogans (1987))
Species Pennella crassicornis Steenstrup & Lütken, 1861 accepted as Pennella filosa (Linnaeus, 1758) (synonym according to Hogans (1987))
Species Pennella germonia Leigh-Sharpe, 1931 accepted as Pennella filosa (Linnaeus, 1758) (synonym )
Species Pennella histiophori Thomson G.M., 1890 accepted as Pennella filosa (Linnaeus, 1758) (Probable synonym according to Hogans (1988))
Species Pennella holteni (Desmarest, 1825) accepted as Pennella exocoeti (Holten, 1802) (synonym according to Wilson (1917) )
Species Pennella liouvillei Quidor, 1913 accepted as Pennella exocoeti (Holten, 1802) (Probable synonym according to Hogans (1988))
Species Pennella orthagorisci Wright E.P., 1870 accepted as Pennella filosa (Linnaeus, 1758) (synonym)
Species Pennella oxyporhamphi Sebastian, 1966 accepted as Pennella longicauda Gnanamuthu, 1957
Species Pennella plumosa DeKay, 1844 accepted as Pennella diodontis Oken, 1815 (synonym according to Kabata (1979))
Species Pennella pustulosa Baird, 1847 accepted as Pennella filosa (Linnaeus, 1758) (synonym according to Hogans (1988))
Species Pennella rubra Brian, 1906 accepted as Pennella filosa (Linnaeus, 1758) (Brian (1912) re-evaluated the original designation and considered his P. rubra a synonym of P. filosa (Wilson 1917))
Species Pennella sultana Milne-Edwards, 1840 accepted as Lernaeolophus sultanus (Milne Edwards, 1840) (synonym)
Species Pennella tridentata Listowsky, 1892 accepted as Pennella filosa (Linnaeus, 1758)
Species Pennella varians Steenstrup & Lütken, 1861 accepted as Pennella filosa (Linnaeus, 1758)
Species Pennella zeylanica Kirtisinghe, 1932 accepted as Pennella instructa Wilson C.B., 1917 (synonym according to Hogans (1988))
marine, brackish, fresh, terrestrial
Oken, L. (1815-1816). <em>Lehrbuch der Naturgeschichte. Dritter Theil: Zoologie. Erste Abtheilung: Fleischlose Thiere.</em> Leipzig: C.H. Reclam & Jena: A. Schmid. xxviii + 842 pp. + xviii, 40 pls., available online at http://books.google.com/books?id=Spo5AAAAcAAJ [details]  OpenAccess publication 
Taxonomic remark This review of Pennella suggests that 15 of 44 reported species exhibit unique and distinct characteristics and are...  
Taxonomic remark This review of Pennella suggests that 15 of 44 reported species exhibit unique and distinct characteristics and are substantiated, or are potentially valid members of the genus. Six species (P. elegans, P. longicauda, P. platycephalus, P. robusta) described from single specimens on flyingfish (Gnanamuthu 1957), P. selaris from trevally (Kirtisinghe 1964) described from two specimens (one immature and one apparent adult) and P. remorae (also described from a single specimen), are now included in this group although no type material, or any other specimens exist. We have only the original descriptions and figures, which indicate that the mature parasites exhibited unique characters, to consider the species as valid. Additional specimens of these six species are required to discover the true nature of each.

One objective of this present review has been to define a set of characters which can be effectively used to differentiate species of Pennella. Wilson (1917) had previously indicated in his discussion on the taxonomy of Pennella: “scarcely any two authors have described their species similarly”. If species of previously documented Pennella had been treated in a similar manner, with descriptions based on a consistent set of differentiating characters, the confusion in the taxonomy of the genus would be much reduced. It would be useful to incorporate those characters which are now suggested for distinguishing species into any future descriptions of new Pennella. The salient morphological features useful for differentiating species are the parasite size, cephalothoracic papillae shape and configuration, segmentation of the first and second antenna, holdfast horn number and arrangement, and abdominal plume structure. The non-morphological character based on host type is also useful. For Pennella, the key to confident assessment of any species is the application of defined character states to multiple specimens.

In the present review, the alignment of species groups by size is amended from previous assessments, there are four large species (>100 mm): P. balaenoptera, P. benzi sp. nov., P. filosa and P. instructa; 3 species are intermediate in size (50–100 mm): P. hawaiiensis, P. remorae and P. robusta and eight are small species (<50mm):

P. diodontis, P. elegans, P. exocoeti, P. longicauda, P. makaira , P. platycephalus, P. sagitta, and P. selaris.

Species grouping and diversity based on the host type is evident: P. balaenoptera is parasitic on marine mammals, P. filosa is a parasite of large pelagic fish (billfish, tunas, ocean sunfish, amberjack, and dolphinfish), P. benzi sp. nov. occurs on escolars, P. hawaiiensis occurs on boarfish, P. instructa is found on swordfish and sailfish,

P. remorae parasitizes remoras, P. exocoeti, P. elegans, P. longicauda, P. elegans and P. platycephalus are parasites of several species of flyingfish, Pennella makaira is found on blue marlin, P. diodontis is found on porcupine fish,

P. selaris parasitizes the blackfin trevally and P. sagitta infests frogfish. Species richness and diversity of the genus is re-affirmed; based on this current review using external morphology and phenotypic characters to define species, it is suggested that there are a variety of Pennella species which exhibit a wide range of shapes and sizes, and type of hosts infested.

If Pennella was subjected to molecular phylogenetic analysis some confusion as to what defines a legitimate species could be eliminated. Castro-Romero et al. (2016) documented morphological variability in cephalothorax and holdfast structures between specimens of single species of three pennellid genera (Peniculus Nordmann, 1832, Metapeniculus Castro-Romero & Baeza-Kuroki, 1985, and Trifur Wilson, 1917) based on DNA barcoding; this method when applied to Pennella may show similar results. It would be very useful to determine the polyphyletic distribution within Pennella based on host designation as this could indicate if there are  [details]
Walter, T.C.; Boxshall, G. (2020). World of Copepods database. Pennella Oken, 1815. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=135648 on 2020-04-03
Date
action
by
2004-12-21 15:54:05Z
created
2006-09-27 07:06:07Z
changed
Martinez, Olga
2008-08-06 13:32:15Z
changed
2011-04-05 08:08:50Z
changed

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


original description Oken, L. (1815-1816). <em>Lehrbuch der Naturgeschichte. Dritter Theil: Zoologie. Erste Abtheilung: Fleischlose Thiere.</em> Leipzig: C.H. Reclam & Jena: A. Schmid. xxviii + 842 pp. + xviii, 40 pls., available online at http://books.google.com/books?id=Spo5AAAAcAAJ [details]  OpenAccess publication 

original description  (of Penicillus Kumar & Hameed, 1993) Kumar, K.A. & M.S. Hameed. (1993). A new genus of the family Pennellidae (Copepoda: Siphonostomatoida) parasitic on elasmobranchs in the southwest coast of India. Journal of the Marine Biological Association of India 35(1-2):198-200. [details]  Available for editors  PDF available [request] 

basis of record Boxshall, G. (2001). Copepoda (excl. Harpacticoida), <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 252-268 (look up in IMIS[details]   

additional source Neave, Sheffield Airey. (1939-1996). Nomenclator Zoologicus vol. 1-10 Online. [developed by uBio, hosted online at MBLWHOI Library]., available online at http://ubio.org/NomenclatorZoologicus/ [details]   

additional source Hogans, W.E. (2017). Review of Pennella Oken, 1816 ( Copepoda: Pennellidae) with a description of Pennella benzi sp nov., a parasite of Escolar, Lepidocybium flavobrunneum (Pisces) in the northwest Atlantic Ocean. Zootaxa, 4244(1):1-38., available online at https://doi.org/10.11646/zootaxa.4244.1.1 [details]  Available for editors  PDF available [request] 
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
From editor or global species database
Taxonomic remark This review of Pennella suggests that 15 of 44 reported species exhibit unique and distinct characteristics and are substantiated, or are potentially valid members of the genus. Six species (P. elegans, P. longicauda, P. platycephalus, P. robusta) described from single specimens on flyingfish (Gnanamuthu 1957), P. selaris from trevally (Kirtisinghe 1964) described from two specimens (one immature and one apparent adult) and P. remorae (also described from a single specimen), are now included in this group although no type material, or any other specimens exist. We have only the original descriptions and figures, which indicate that the mature parasites exhibited unique characters, to consider the species as valid. Additional specimens of these six species are required to discover the true nature of each.

One objective of this present review has been to define a set of characters which can be effectively used to differentiate species of Pennella. Wilson (1917) had previously indicated in his discussion on the taxonomy of Pennella: “scarcely any two authors have described their species similarly”. If species of previously documented Pennella had been treated in a similar manner, with descriptions based on a consistent set of differentiating characters, the confusion in the taxonomy of the genus would be much reduced. It would be useful to incorporate those characters which are now suggested for distinguishing species into any future descriptions of new Pennella. The salient morphological features useful for differentiating species are the parasite size, cephalothoracic papillae shape and configuration, segmentation of the first and second antenna, holdfast horn number and arrangement, and abdominal plume structure. The non-morphological character based on host type is also useful. For Pennella, the key to confident assessment of any species is the application of defined character states to multiple specimens.

In the present review, the alignment of species groups by size is amended from previous assessments, there are four large species (>100 mm): P. balaenoptera, P. benzi sp. nov., P. filosa and P. instructa; 3 species are intermediate in size (50–100 mm): P. hawaiiensis, P. remorae and P. robusta and eight are small species (<50mm):

P. diodontis, P. elegans, P. exocoeti, P. longicauda, P. makaira , P. platycephalus, P. sagitta, and P. selaris.

Species grouping and diversity based on the host type is evident: P. balaenoptera is parasitic on marine mammals, P. filosa is a parasite of large pelagic fish (billfish, tunas, ocean sunfish, amberjack, and dolphinfish), P. benzi sp. nov. occurs on escolars, P. hawaiiensis occurs on boarfish, P. instructa is found on swordfish and sailfish,

P. remorae parasitizes remoras, P. exocoeti, P. elegans, P. longicauda, P. elegans and P. platycephalus are parasites of several species of flyingfish, Pennella makaira is found on blue marlin, P. diodontis is found on porcupine fish,

P. selaris parasitizes the blackfin trevally and P. sagitta infests frogfish. Species richness and diversity of the genus is re-affirmed; based on this current review using external morphology and phenotypic characters to define species, it is suggested that there are a variety of Pennella species which exhibit a wide range of shapes and sizes, and type of hosts infested.

If Pennella was subjected to molecular phylogenetic analysis some confusion as to what defines a legitimate species could be eliminated. Castro-Romero et al. (2016) documented morphological variability in cephalothorax and holdfast structures between specimens of single species of three pennellid genera (Peniculus Nordmann, 1832, Metapeniculus Castro-Romero & Baeza-Kuroki, 1985, and Trifur Wilson, 1917) based on DNA barcoding; this method when applied to Pennella may show similar results. It would be very useful to determine the polyphyletic distribution within Pennella based on host designation as this could indicate if there are  [details]
 



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Japanese ヒジキムシ  [details]
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