1,721,132 research outputs found
Gnathia grutterae sp nov (Crustacea, Isopoda, Gnathiidae) parasitising representatives of the Balistidae, Labridae and Tetraodontidae from Lizard Island, Great Barrier Reef, Australia
No full textFerreira, Maryke L., Smit, Nico J, Davies, Angela J (2010): Gnathia grutterae sp. nov. (Crustacea, Isopoda, Gnathiidae) parasitising representatives of the Balistidae, Labridae and Tetraodontidae from Lizard Island, Great Barrier Reef, Australia. Zootaxa 2718: 39-50, DOI: 10.5281/zenodo.19979
Cymothoidae Leach 1814
No full textFamily Cymothoidae Leach, 1814Published as part of Hadfield, Kerry A., Bruce, Niel L. & Smit, Nico J., 2013, Review of the fish-parasitic genus Cymothoa Fabricius, 1793 (Isopoda, Cymothoidae, Crustacea) from the southwestern Indian Ocean, including a new species from South Africa, pp. 152-176 in Zootaxa 3640 (2) on page 153, DOI: 10.11646/zootaxa.3640.2.2, http://zenodo.org/record/21957
FIGURE 2 in Gnathia marleyi sp. nov. (Crustacea, Isopoda, Gnathiidae) from the Eastern Caribbean
No full textFIGURE 2. Cephalosome appendages of male Gnathia marleyi sp. nov. Male holotype, 3.3 mm (Crustacea Cat. No. 20223). A, Pylopod. B, Maxilliped. C, Articles 2 and 3 of pylopod. Scale-bars: A, B, 200 μm; C, 100µm.Published as part of Farquharson, Charon, Smit, Nico J. & Sikkel, Paul C., 2012, Gnathia marleyi sp. nov. (Crustacea, Isopoda, Gnathiidae) from the Eastern Caribbean, pp. 47-61 in Zootaxa 3381 on page 50, DOI: 10.5281/zenodo.21283
FIGURE 9 in Review of the fish-parasitic genus Cymothoa Fabricius, 1793 (Isopoda, Cymothoidae, Crustacea) from the southwestern Indian Ocean, including a new species from South Africa
No full textFIGURE 9. Cymothoa sodwana sp. nov. Female paratype (21 mm) (SAMC A45927). A, dorsal pleopod 1; B; dorsal pleopod 2; C, dorsal pleopod 3; D, dorsal pleopod 4; E, dorsal pleopod 5, F, ventral pleopod 1; G, ventral pleopod 2; H, ventral pleopod 3; I, ventral pleopod 4; J, ventral pleopod 5.Published as part of Hadfield, Kerry A., Bruce, Niel L. & Smit, Nico J., 2013, Review of the fish-parasitic genus Cymothoa Fabricius, 1793 (Isopoda, Cymothoidae, Crustacea) from the southwestern Indian Ocean, including a new species from South Africa, pp. 152-176 in Zootaxa 3640 (2) on page 169, DOI: 10.11646/zootaxa.3640.2.2, http://zenodo.org/record/21957
FIGURE 2 in Gnathia pilosus sp. nov. (Crustacea, Isopoda, Gnathiidae) from the East Coast of South Africa
No full textFIGURE 2. Gnathia pilosus sp. nov. Male holotype, 1.9 mm (SAM A45580). A, Dorsal view of antenna 1. B, Dorsal view of antenna 2. C, Ventral view of left mandible. D, Ventral view of left maxilliped. E, Ventral view of left pylopod. Scale bars: 100 μm.Published as part of Hadfield, Kerry A., Smit, Nico J. & Avenant-Oldewage, Annemarié, 2008, Gnathia pilosus sp. nov. (Crustacea, Isopoda, Gnathiidae) from the East Coast of South Africa, pp. 23-41 in Zootaxa 1894 on page 28, DOI: 10.5281/zenodo.18437
Gnathia Leach 1814
No full textGnathia Leach, 1814 Type species. Gnathia termitoides Leach, 1814; see Cohen and Poore (1994) Remarks. Gnathia is the largest genus in the family with more than 110 species. It has a global distribution and extremely common in coral-reef habitats. Gnathia juveniles have been reported from teleost and elasmobranch hosts. The generic revision of Cohen and Poore (1994) is still accepted.Published as part of Farquharson, Charon, Smit, Nico J., Grutter, Alexandra S. & Davies, Angela J., 2012, Gnathia masca sp. nov. (Crustacea, Isopoda, Gnathiidae) from Lizard Island, Great Barrier Reef, Australia, pp. 22-36 in Zootaxa 3233 on page 23, DOI: 10.5281/zenodo.21294
Unveiling the Hidden Players: Exploring the Intricate Dance of Aquatic Parasites, Host Biodiversity and Ecosystem Health
No full textThis chapter delves into the multifaceted roles of aquatic parasites within natural ecosystems. It highlights both the negative and positive impacts these parasites can have on individual hosts, host populations, biodiversity and overall ecosystem health. The discussion covers how parasites influence various levels of biological organisation and ecosystem functions. It also explores how healthy ecosystems are defined and maintained, emphasising the roles of vigour, organisation and resilience. The complex interactions between parasites and their hosts are illustrated through numerous examples, spanning cases of behavioural modification, host-parasite coevolution, and broader ecological consequences stemming from those interactions. Understanding the interplay between parasites, hosts and ecosystems is presented as crucial for a comprehensive view of ecosystem dynamics
Cymothoa rotundifrons Haller 1880
No full textCymothoa rotundifrons Haller, 1880 Cymothoa rotundifrons Haller, 1880: 375 –377, pl. XVIII, figs. 1–4; Nierstrasz, 1931: 136; Trilles, 1994: 137; Kensley, 2001: 233 [nomen dubium]. Remarks. Trilles (1975; 1994) suggested that Cymothoa rotundifrons could be placed in synonymy with C. borbonica as C. rotundifrons is known only from the original record (from Mauritius) and corresponds with the distribution of C. borbonica. Deposition of the type material for C. rotundifrons is not known, and equally could not be located in any European museum. This species has only been collected once and with no other material to represent the species, discussions on this species are based on the type drawings. Comparison of Haller’s (1880) figures to the lectotype of C. borbonica show the two species are similar, but cannot be conclusively considered the same species, as the type material for C. rotundifrons is most probably destroyed, lost or otherwise misplaced. As the host identity for C. rotundifrons is not known and there are multiple species of Cymothoa in the Mauritius region, it is unlikely that the identity of this species will ever be established; therefore we here place Cymothoa rotundifrons into nomen dubium.Published as part of Hadfield, Kerry A., Bruce, Niel L. & Smit, Nico J., 2013, Review of the fish-parasitic genus Cymothoa Fabricius, 1793 (Isopoda, Cymothoidae, Crustacea) from the southwestern Indian Ocean, including a new species from South Africa, pp. 152-176 in Zootaxa 3640 (2) on page 173, DOI: 10.11646/zootaxa.3640.2.2, http://zenodo.org/record/21957
Cymothoa hermani Hadfield, Bruce & Smit 2011
No full textCymothoa hermani Hadfield, Bruce & Smit, 2011 Cymothoa hermani Hadfield, Bruce & Smit, 2011: 57 –68. Remarks. Cymothoa hermani can be identified by the unique bulbous ornamentation on pereonite 1, anterolateral angles on pereonite 1 rounded and produced past frontal margin of cephalon, long and slender dactyli and the numerous lobes on pleopods 4 and 5 in the ovigerous female. The only other Cymothoa species known from the region, C. eremita, differs from C. hermani by the lack of the characteristic bulbous ornamentation on pereonite 1 that is present in C. hermani. Cymothoa eremita also has a dorsally visible and wider cephalon with the anterolateral margin of pereonite 1 not produced past the cephalon; irregular posterior margins of the pleonites with pleonite 5 appearing to have very distinctly produced sub-medial points; and more acutely produced lateral pereonite margins than in C. hermani. Hosts. Only known from Leptoscarus vaigiensis (Quoy & Gaimard, 1824) (see Hadfield et al. 2011). Distribution. Known from the type location, off Miwi Island, Zanzibar, Tanzania (Hadfield et al. 2011).Published as part of Hadfield, Kerry A., Bruce, Niel L. & Smit, Nico J., 2013, Review of the fish-parasitic genus Cymothoa Fabricius, 1793 (Isopoda, Cymothoidae, Crustacea) from the southwestern Indian Ocean, including a new species from South Africa, pp. 152-176 in Zootaxa 3640 (2) on pages 163-164, DOI: 10.11646/zootaxa.3640.2.2, http://zenodo.org/record/21957
Elthusa Schioedte & Meinert 1884
No full textGenus Elthusa Schioedte & Meinert, 1884 Elthusa Schioedte & Meinert, 1884: 337.- Bruce 1990: 254.- Trilles 1994: 164.- Trilles and Randall 2011: 453-454. Type species. Livoneca emarginata Bleeker, 1857, by monotypy (Schioedte and Meinert 1884). Remarks. Diagnostic characters for Elthusa include a weakly vaulted body; pleonite 1 as wide as or slightly narrower than pleonite 2; posterior margin of cephalon not trilobed; wide pleon; antennula shorter than antenna, bases not in contact (varying from close together to wide apart); and pleopods all simple, lamellar. A revised diagnosis of the genus was provided by Bruce (1990) as well as Trilles and Randall (2011). Elthusa can be regarded as one of the most morphologically varied cymothoid genera, with many Elthusa species still requiring detailed study and redescription. The antennula position (being close together or far apart), shape of the cephalon anterior margin, as well as the width of the pleon and pleonite 5 are some of the varying characters noted within species of this genus (Bruce 1990). This variation can cause confusion in genus identifications and may lead to incorrect species placement if not taken into account with all of the other genus characters.Published as part of Hadfield, Kerry A., Tuttle, Lillian J. & Smit, Nico J., 2017, Elthusawinstoni sp. n. (Isopoda, Cymothoidae), a new fish parasitic isopod from Hawaii, pp. 125-135 in ZooKeys 661 on page 125, DOI: 10.3897/zookeys.661.1125
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