A check-list of the Mastogloia Thwaites ex W. Sm. species

from the Mediterranean area.

 

Maurice LOIR

 

 

AbstractOne hundred and two Mastogloia species were found in samples collected on the coasts of Corfu, Crete, Dalmatia, Greece, Menorca and Sardegna. Eighty two are determined species while fifteen are undetermined. The objective of this study was to provide new information on the biogeography of the genus Mastogloia. In addition, the morphology of eleven undetermined taxa was described using LM.

 

RésuméListe des espèces du genre Mastogloia Thwaites ex W. Sm. présentes dans le bassin méditerranéen. Cent deux espèces appartenant au genre Mastogloia ont été répertoriées dans des prélèvements effectués sur les côtes de Corfou, de Crète, de Dalmatie, de Grèce, de Minorque et de Sardaigne. Quatre-vingt-deux espèces sont identifiées. Quinze sont indéterminées. Cette étude apporte de nouvelles informations sur la distribution géographique des espèces appartenant au genre Mastogloia. En outre, onze espèces non identifiées sont décrites en microscopie photonique. 


 

INTRODUCTION

Mastogloia Thwaites ex W. Smith is predominantly a marine genus (Round et al. 1990) and it is one of the largest diatom genera (more than 400 published taxa, Novarino 1989). This genus has naviculoid valves which are usually isopolar. Species of Mastogloia are easily distinguished from those of other genera by the presence of the partectal ring which represent a modification of the valvocopula (Paddock & Kemp 1990). The partectal ring bears a number of hollow chambers, the partecta, which may be regular or variable in shape and size. The arrangement of this feature can be clearly observed in the LM and provides, with the striation of the valves, a practical way of describing the differences between most species.

The Mastogloia genus should be a modern one, still undergoing rapid evolution and, likely, the full extent of this genus has not yet been mapped (Paddock & Kemp 1990). It has a tropical and subtropical worldwide distribution (Hustedt, 1931-1959, Voigt 1942, 1952, Ricard 1987, Witkowski et al. 2000, Pennesi et al. 2011, Lobban et al. 2012, Lobban & Pennesi 2014, Loir & Novarino, 2013). During previous decades, many studies have proposed lists of either marine diatom taxa or only Mastogloia taxa, from various littoral areas of the Mediterranean Sea and related seas: eastern coast of Spain (Tomas,1982), Sardegna (Zanon, 1948), western coast of Italy (Rampi 1942; Zanon 1947), Venise lagoon (Marchesoni, 1954), coast of Croatia (Vilicic et al., 2002), eastern coast of Greece, (Politis, 1960; Belegratis et Economou-Amilli, 2002), Greek islands in the front of Turkey (Foged, 1985a, 1985b), Aegean coast of Turkey (Sabanci, 2013).

In this paper we present a checklist of the benthic Mastogloia species found in sand samples collected in 6 areas of the Mediterranean Sea and related seas, to provide a contribution to the knowledge of the biogeography of this genus. In addition, we describe twelve undetermined Mastogloia taxa.

 

MATERIALS AND METHODS

Samples were collected from 2010 to 2018, in september-october, along the coasts of the six following islands and continental areas:

Menorca (Balearic islands): samples collected on 7 beaches of the southern and eastern coasts and 2 beaches of the northern coast. Sardegna: 4 samples collected on the north-eastern littoral of the island (Tyrrhenian sea). Dalmatia (Croatia, Adriatic sea): 6 samples collected on beaches south-east of Dubrovnik. 2 samples at Lopud island (42°41’14N, 17°56’15E), and 2 samples on beaches south-east of Split. Corfu (Ionian sea): 6 samples collected on beaches on the north-eastern littoral of the island. Crete: 3 samples collected at the north-east of the island, northward of Agios Nikolaos. Greece, Attica (Aegean sea): 2 samples collected on beaches southward of Marathon (38°06’15N, 23°58’51E) and 1 sample at Egine island (37°44’52N, 23°25’28E).

Samples of sandy sediments were collected by snorkelling, between 2.5 and 5 m. depth. Excepted at Menorca, where the diatom flora was insufficiently dense, the areas susceptible to support diatom assemblages are easily located as they display a more or less intense yellow-brown tint. Each sample was obtained by scraping away the top 3-5 mm of sandy sediment with a 50-ml Falcon tube at two or three adjacent places. After diluting 50: 50 with seawater, the sample was vigorously shaken, then allowed to rest briefly to allow settlement of mineral and large particles. The supernatant was collected and allowed to rest for 24 hours. The obtained pellet was suspended in 3 ml seawater with 4% neutral formaldehyde. Frustules/valves were cleaned using hydrogen peroxide and/or sodium hypochlorite, then mounted in Melmount™ (ND = 1.704; Cargill Labs., Cedar Grove, N.J., USA). They were observed and photographed using an Olympus CH40 microscope.

Species identification was performed with the aid of standard and new monographs such as: Peragallo & Peragallo (1897-1908), Voigt (1942), Voigt (1952), Hustedt (1931-1959), Witkowski et al. (2000), Pennesi et al. (2011), Lobban et al. (2012), Loir & Novarino (2013), Sabanci (2013). The data obtained for each of the samples collected in a geographical area were pooled to establish a check-list for each of the six areas. Frustule/valve measurements and striae counts were carried out on numerical micrographs at magnifications equal or higher to x3500. Valve outlines are described according to Hendey (1964) and the terminology for the morphological features is that proposed by Paddock & Kemp (1990).

 

RESULTS

In the 6 areas, the genus Mastogloia was predominant in the collected diatom flora (between 277 and 344 diatom taxa; only 190 taxa for Greece. For the pictures of these taxa, see Loir, 2010-2018 ). It represents 16 to 20 percent (27 percent for Greece) of the the diatom populations. We have recorded 58 Mastogloia taxa at Corfu, 53 at Crete, 51 at Dalmatia, 51 at Greece, 51 at Menorca and 46 at Sardegna.

The Mastogloia species

A total of 102 Mastogloia taxa was found in the 6 areas (Table 1). Eighty two taxa were identified as their morphological features and biometric data conform to those indicated in the original and in the new diagnoses. On that subject, we have noted that several species have measurements near or sometimes below the inferior limit given by the diagnoses. Sixteen of these identified taxa were present in the 6 investigated areas and fifteen were present in 5 areas. Twenty one were found in only one area.

As observed previously (Loir & Novarino, 2013) valves/frustules which conform to most of the diagnotic characters of Mastogloia erythraea (Hustedt, 1931-1959) display high variations of their shape and size and three forms f1, f2 and f3 were characterized which represent likely a complex of related offsprings. Only the f1 valves possess the longitudinal ridges bordering the raphe, characteristic of Mastogloia erythraea Grunow (Stephens & Gibson, 1980; Novarino & Muftah, 1991). The form f1 was more or less abundant in the 6 areas, the form f2 was present in 4 areas, while the form f3 was rather scarce.

Valves/frustules of five taxa either conform only partly with the diagnosis of a species or their characters are near those of two species. These taxa were rather rare: we have found only one to four specimens of each of them. Mastogloia sp. cf. exilis previously named Mastogloia sp. 6 was described by Loir & Novarino (2013). Mastogloia sp. cf. smithii previously named Mastogloia sp. W was described by Loir (2016). The three other taxa are described below.

Fifteen taxa, also rarely found, are undetermined. Seven of them have a length equal to or below 20 µm. Mastogloia sp. 3, Mastogloia sp. 8, Mastogloia sp. 15 and Mastogloia sp. 17 are identical to the four undetermined taxa which have been described by Loir & Novarino (2013). Mastogloia sp. F and Mastogloia sp. P were previously found in Brittany and were described by Loir (2016).

Description of undetermined Mastogloia species

Mastogloia sp. cf. acutiuscula var. elliptica Hustedt (Fig. 1). Two specimens 17.2 and 21 µm long, 8 and 8.9 µm broad were found. Most of their characters are similar to those of Mastogloia acutiuscula var. elliptica. However they differ by a greater number of partecta in 10 µm: 9 vs. 5-8, and by the apparent absence of longitudinal lines.

Mastogloia sp. cf. kariana Grunow in Cleve & Grunow (Fig. 2). The sole found specimen,  34 µm long, 8.8 µm broad differs from Mastogloia kariana by the number of striae in 10 µm: 29 vs. 20-22 (Witkowski et al., 2000) and by a slightly higher number of partecta in 10 µm: 2.6 vs. 1.5-2.

 Mastogloia sp. cf. ovum paschale (A. Schmit) Mann (Fig. 3). Several characters of the valve of the sole found specimen are similar to those of Mastogloia ovum paschale. However, the size is smaller (32 µm long, 20 µm broad vs. 45-60 and 25-40 µm), but such smaller specimens were found in the French Lesser Antilles (Loir & Novarino, 2013). The number of transapical striae in 10 µm is higher: 18 vs. 11-15, as is the number of partecta in 10 µm: 7 vs. 5-6.

 Mastogloia sp. B (Fig. 4). The valve 26 µm long, 15.3 µm broad, has a shape and a striation (3 punctate areolae systems crossing each other) very similar to those of Mastogloia horvathiana. But, the partectal ring is similar to that of Mastogloia ovulum: 1.5 µm wide, partecta apically elongated, 4 in 10 µm, with concave inner margin. Such a combination of the main characters (valvar structure and partectal ring) of two different species has been already observed (Voigt, 1967).

Mastogloia sp. C (Fig. 5). Valves elliptic-lanceolate with capitate apices, 21-24 µm long, 6 µm broad. Raphe straight, axial area narrow enclosed by two longitudinal ribs, central area very small. Transapical striae slightly radiate, 27-28 in 10 µm. Partectal ring 0,6 µm broad, partecta equal, separable and not adjacent to each other, with inner margin convex, 3-3,5 in 10 µm.

Mastogloia sp. D (Fig. 6). Valves (five were found) lanceolate with rostrate apices, 17-20.6 µm long, 6.8-7.1 µm broad. Raphe straight, axial area narrow enclosed by two longitudinal ribs, central area very small. Transapical striae not straight, convergent near the axial area and slightly radiate near the valve margin, 22-24 in 10 µm. Partecta equal, inseparable, apically elongated, 0.6-0.7 µm broad, 6.3-7 in 10 µm.

Mastogloia sp. J (Fig. 7). Valve 11.3 µm long, 3.3 µm broad, lanceolate, linear elliptic with broadly rounded apices. Raphe straight, central area small circular. Transapical striae in the middle parallel towards apices becoming slightly radiate, 28 in 10 µm. Partectal ring 0.5 µm wide, partecta separable, equal, apically elongated, 6.5 in 10 µm.

 Mastogloia sp. K (Fig. 8). Valve elliptic with subrostrate apices, slightly heteropolar, 18 µm long 7.3 µm broad. Raphe straight, axial area narrow, central area small, circular, enclosed by two longitudinal ribs. Transapical striae parallel in the middle then slightly radiate towards the apices 27-28 in 10 µm. One median large partecta 1.4 µm wide and groups of 3 smaller partecta 1 µm wide. At each side of the valve, identical number of partecta.

 Mastogloia sp. M (Fig 9). Valve broadly elliptic with subrostrate round apices, 11.2 µm long 5.8 µm broad. Raphe straight, axial area narrow, central area small, circular. Transapical striae slightly radiate, 26-27 in 10 µm. Partecta separable, equal, apically elongated, 4.3 in 10 µm, 0.6 µm wide.

Mastogloia sp. N (Fig. 10). Valve broadly elliptic with rostrate apices, 17.5 µm long, 9.5 µm broad. Raphe slightly undulating, axial area narrow, central area small slightly apically elongated. Transapical striae slightly radiate, 23 in 10 µm. Partecta inseparable, equal, apically elongated, 4.5-5 in 10 µm, 1 µm wide.

 Mastogloia sp. U (Fig. 11). Valve broadly elliptic with subrostrate rounded apices, 13 µm long, 6.9 µm broad. Raphe slightly ondulating, axial area narrow, central area small slightly apically elongated. Transapical striae parallel, 21 in 10 µm crossed by longitudinal lines, 15 in 10 µm. Partecta inseparable, equal, apically elongated, 4.4 in 10 µm, 0.6 wide.

Mastogloia sp. Z (Fig. 12). Valve elliptic with subrostrate apices, 20 µm long, 9.3 µm broad. Raphe straight, axial and central areas narrow, both enclosed by two longitudinal ribs. Transapical striae, punctate, radiate, 18 in 10 µm, puncta 18 in 10 µm. Partecta inseparable, equal, apically elongated, 7 in 10 µm, 1 µm wide.

 

DISCUSSION

Since the beginning of the twentieth century, researches were conducted on the microalgal populations, including the genus Mastogloia, from the Mediterranean area (see introduction), especially on the coasts of the Adriatic Sea, of the Aegean Sea and of the Tyrrhenian Sea and here and there on the coasts of Spain and of France. None investigation was carried out at Menorca, at Corfu and at Crete.

Most of the investigations have studied phytoplanktonic populations (Rampi, 1942; Marchesoni, 1954; Vilicic et al., 1982). Two studies (Sabanci, 2013; Tomas, 1982) have considered the benthic (epiphytic, epilithic and epipelic) diatom flora. One study was focused on the epiphytic diatom flora (Belegratis & Econommou-Amilli, 2002). Our study has considered exclusively epi/endopelic and epispammic diatom assemblages.

On the coasts of Spain (Tomas, 1982), of Greece (Belegratis & Economou-Amilli, 2002) and of Turkey (Sabanci, 2013) 22, 36 and 8 Mastogloia species were respectively found  in the benthic diatom flora, while 27 species were found in the phytoplankton of the Northern Adriatic Sea (Vilicic et., 1982). In the six geographical areas that we have investigated, we have found 46 to 58 epi/endopelic/epipsammic Mastogloia taxa. In none of the above-mentioned studies were collected, as we have done, samples of sublittoral sand the yellow-brown color of which reveals dense diatom assemblages. This points out that the diatom assemblages that live either freely on and in the sediments or attached to sand grains display a higher specific diversity of the Mastogloia genus than every where and especially in the plankton, most of the Mastogloia species being tychoplanktonic (Ricard, 1987; Round et al., 1990). We have collected our Greek samples at a short distance of the station where Belegratis & Economou-Amilli (2002) have collected their samples: we found 51 Mastogloia taxa while only 36 were found on macroalgae. In the 6 collected diatom flora, the genus Mastogloia was dominant as was already observed (Loir & Novarino, 2014; Pennesi et al., 2011). After Belegratis & Economou-Amilli (2002), this genus was also dominant in the epiphytic flora collected in the Evoikos Gulf. 

Most of the 82 identified species were already recorded in the Mediterranean area (Table 1). The 16 species which are present in the six areas likely are common and several of them have been previously frequently recorded. At the opposite, 21 species present in only one area would be rather uncommon. Seven of them were not previously recorded. It would be also the case for 5 species, present in 2 areas and never recorded.

Although they were recorded previously once to three times, some Mastogloia species were not found in our samples: Mastogloia affirmata (Leudiger-Fortmorel) Cleve (Witkowski et al., 2000), M. aquilegiae Grunow (Tomas, 1982; Sabanci, 2013), M. baldjikiana Grunow (Belegratis & Economou-Amilli, 2002), M. baltica Grunow (Tomas, 1982), M. obliqua Hagelstein (Witkowski et al., 2000), M. quinquecostata Grunow (Belegratis & Economou-Amilli, 2002; Vilicic et al., 2002; Sabanci, 2013), M. schmidti Heiden (Hustedt, 1931-1959; Vilicic et al., 2002) and M. smithii var. lacustris Grunow (Tomas, 1982). This suggests that the knowledge of the Mastogloia species present in the Mediterranean area still need further investigations.

Seven among the 20 undetermined Mastogloia species have been already recorded in the Lesser French Antilles (Loir & Novarino, 2014) and on the Atlantic oast (Loir, 2016). Seven taxa that we describe in this paper belong to the nanophytobenthos. It may not be excluded that some of these 20 taxa have been already described.

 

REFERENCES

 


BELEGRATIS M.R. & ECONOMOU-AMILLI A., 2002 – Seasonal and vertical distribution of marine epiphytic algae in the Evoikos Gulf (Aegean Sea, Greece). Algological Studies, 107: 131-151.

FOGED N., 1985a – Diatoms in Samos, a Greek island in the Aegean. Bibliotheca Diatomologica, N° 10, 3-119. J Kramer, Liechtenstein.

FOGED N., 1985b – Diatoms in Kos and Kalymnos, two Greek island in the Aegean. . Bibliotheca Diatomologica, N° 10, 3-105. J Kramer, Liechtenstein.

GIAJ-LEVRA P., 1927 - Diatomee marine di Ancona e Acireale. Nuovo Giornale Botanico Italiano, Nuova Serie, 34: 1106–1114.

HUSTEDT F., 1931–1959 - Die Kieselalgen Deutschlands, Österreich und der Schweiz unter

Berückhsichtigung der übrigen Länder Europas sowie der angrenzenden Meeresgebiete. In: Kryptogamenflora von Deutschland, Österreich und der Schweiz (L. Rabenhorst, ed.), Buch 7 teil 2, 1–845. Akademische Verlag, Leipzig.

LOBBAN, C.S., SCHEFTER M., JORDAN R.W., ARAI Y., SASAKIA., THERIOT E.C., ASHWORTH M., RUCK E.C. & PENNESI C., 2012 - Coral-reef diatoms (Bacillariophyta) from Guam: new records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories. Micronesica 43(2): 237 – 479, 2012

LOIR M., 2010-2018 - Marine benthic diatoms. Available from: http://www.diatomloir.eu/Site Diatom/Communities.html.

LOIR M., 2016 - Marine Mastogloia Thwaites ex W. Sm. species (Bacillariophyceae) from a North-Eastern Atlantic island. Cryptogamie, Algologie, 37: 5-13.

LOIR M. & NOVARINO G., 2013 - Marine Mastogloia Thwaites ex W. Smith and Stigmaphora Wallich species from the French Lesser Antilles (A. Witkowski ed.). pp 133. Koeltz Scientific Books, Königstein, Germany.

MARCHESONI V., 1954 - Il trofismo della Laguna Veneta e la vivificazione marina. III. Ricerche sulle variazioni quantitative del fitoplancton. Archivio di Oceanografia e Limnologia, 9: 151-284.

NOVARINO G., 1989 - An update of the taxa of the genus Mastogloia, with a “resemblance list” for the more recently described ones. Diatom Research, 4: 319–343.

NOVARINO G. & MUFTAH A.R., (1991). A description of Mastogloia biocellata stat. nov; from Qatari coastal waters. Diatom Research, 6: 337-344.

PADDOCK T.B.B. & KEMP K. D., 1990 - An illustrated survey of the morphological features of the diatom genus Mastogloia. Diatom Research, 5: 73–103.

PENNESI C., POULIN M., DE STEFANO M., ROMAGNOLI T. & TOTTI C., 2011 - New insights to the ultrastructure of some marine Mastogloia species section Sulcatae (Bacillariophyceae), including M. neoborneensis sp. nov. Phycologia 50: 548-562.

PERAGALLO H. & PERAGALLO M., 1897–1908 - Diatomées marines de France et des districts maritimes voisins. 491 pp. J. Tempère. Grez-sur-Loing.

POLITIS J.  1960 – Diatomées marines de la Gréce. Vie et Milieu, 11 : 425-436

RICARD M., 1987 – Diatomophycées. In: Atlas du Phytoplancton marin, vol. 2 (Ed. by A. Sournia). Editions du CNRS, Paris. 297p

ROUND F.E., CRAWFORD R.M. & MANN D.G., 1990 - The diatoms, biology and morphology of the genera. 747 pp. Cambridge University Press, Cambridge.

RAMPI L., 1940 - Diatomee del Mare Adriatico. Nuovo Giornale Botanico Italiano, Nuova Serie, 47: 599–608.

RAMPI L., 1942 - Ricerche sul fitoplancton del Mar Ligure. 6. Le Diatomee delle acque di Sanremo. Nuovo Giornale Botanico Italiano, Nuova Serie, 49: 252–268.

RICARD M., 1973 – Etude taxinomique des diatomées marines du lagon de Vairao (Tahiti). I. Le genre Mastogloia. Revue Algologique, Nouvelle série  11: 161-177.

ROUND F.E., CRAWFORD R.M. & MANN D.G., 1990 - The diatoms, biology and morphology of the genera. 747 pp. Cambridge University Press, Cambridge.

SABANCI F.C., 2013 – Species of Mastogloia (Bacillariophyceae) – new for the Aegean coast of Turkey. Mediterranean Marine Science, 14: 129-140.

STEPHENS F.C. & GIBSON R.A., 1980 - Ultrastructural studies on some Mastogloia species of the group Inaequales (Bacillariophyceae). Journal of Phycology, 16: 354-363.

TOMAS X., 1982 - El género Mastogloia en los sistemas acuáticos del litora Mediterráneo espańol. Collectanea Botanica, 13: 929–944.

VILICIC D., MARASOVIC I. & MIOKOVIC D., 2002 - Checklist of phytoplankton in the Eastern Adriatic Sea. Acta Botanica Croatica, 61: 57–91.

VOIGT M., 1942 – Contribution to the diatom genus Mastogloia. Journal of the Royal Microscopical Society 1: 1-20.

VOIGT M., 1952 – A further contribution to the knowledge of the diatom genus Mastogloia. Journal of the Royal of the Microscopical Society 23: 440-449.

VOIGT M., 1963 – Some new and interesting Mastogloia from the Mediterranean area and the Far East. Journal of the Royal Microscopical Society 82: 102-121.

VOIGT M., 1967 – Quelques Mastogloia de la Mélanésie. Cahiers du Pacifique 10: 55.

WITKOWSKI A., LANGE-BERTALOT H. & METZELTIN D., 2000 - Diatom flora of marine coasts. I. Iconographia Diatomologica, 7: 1–925.

ZANON V., 1940 - Diatomee di Rovigno. Terzo contributo alla flora diatomologica dell’Adriatico. Thalassia, 3: 1–72.

ZANON V., 1947 - Diatomee delle Isole Ponziane. Materiali per una florula diatomologica del Mar Tirreno. Bollettino di pesca, piscicoltura e idrobiologia, 2: 36–53.

ZANON V., 1948 - Le Diatomee marine di Sardegna e pugillo di alghe marine della medesima. Bollettino di pesca, piscicoltura e idrobiologia, 3: 202–246.

 


Legends for figures

Fig. 1. Mastogloia sp. cf. acutiuscula var. elliptica, two valves. Scale bar = 10 µm.

Fig. 2. Mastogloia sp. cf. kariana, one valve in two different LM focal views. Scale bar = 10 µm.

Fig. 3. Mastogloia sp. cf. ovum paschale, one valve, each half valve in two different LM focal views. Scale bar = 10 µm.

Fig. 4. Mastogloia sp. B, one valve, each half valve in two different LM focal views. Scale bar = 10 µm.

Fig. 5. Mastogloia sp. C, two valves. Scale bar = 10 µm.

Fig. 6. Mastogloia sp. D, one valve in two different LM focal views. Scale bar = 10 µm.

Fig. 7. Mastogloia sp. J, one valve in two different LM focal views. Scale bar = 10 µm.

Fig. 8. Mastogloia sp. K, one valve in two different LM focal views. Scale bar = 10 µm.

Fig. 9. Mastogloia sp. M, one valve in two different LM focal views. Scale bar = 10 µm.

Fig. 10. Mastogloia sp. N, one valve in two different LM focal views. Scale bar = 10 µm.

Fig. 11. Mastogloia sp. U, one valve in two different LM focal views. Scale bar = 10 µm.

Fig. 12. Mastogloia sp. Z, one valve in two different LM focal views. Scale bar = 10 µm.


 

 

Figures 1 to 6

Planche A

 

Figures 7 to 12

Planche B

Table 1
 

 

Corfu

Crete

Dalm.

Gree.

Meno.

Sard.

Mediterranean Sea

and related seas

Mastogloia acutiuscula Grunow in Cleve

x

x

x

x

x

x

C, H, T, U, V

Mastogloia acutiuscula var. elliptica Hustedt

x

x

x

x

x

x

S

Mastogloia adriatica Voigt

x

-

x

x

x

x

C, S

Mastogloia adriatica var. linearis Voigt

x

-

-

-

x

-

 

Mastogloia affinis Cleve

-

-

-

-

-

x

 

Mastogloia amphipleuroidea Voigt

-

x

-

x

x

-

 

Mastogloia angulata Lewis

x

x

x

x

x

x

G, K, M, P, R, T, U

Mastogloia angusta Hustedt

-

-

x

-

-

-

U

Mastogloia apiculata W. Smith

x

x

x

x

x

x

C, H, R, T, U, V

Mastogloia asperula Grunow

-

x

-

x

-

-

H

Mastogloia asperuloides Hustedt

x

x

x

x

x

x

C

Mastogloia binotata (Grunow) Cleve

x

x

x

x

x

x

H, O, R, S, T, U, V

Mastogloia biocellata (Gr.) Novarino &Muftah

x

x

x

x

x

x

C, S

Mastogloia borneensis Hustedt

x

-

-

-

-

-

S

Mastogloia braunii Grunow

-

-

-

-

-

x

R

Mastogloia chersonensis var. linearis Voigt

x

-

-

x

-

-

 

Mastogloia citrus Cleve

x

x

x

-

-

-

C, H, S

Mastogloia cocconeiformis Grunow

x

x

-

-

-

-

 

Mastogloia corsicana Grunow

x

x

x

x

x

x

H, K, M, R, T, U, V

Mastogloia cribrosa Grunow

-

-

-

x

-

-

K

Mastogloia crucicula (Grunow) Cleve

x

x

x

x

x

x

M, N, P, R, S, T, U

Mastogloia crucicula var. alternans Zanon

x

x

x

x

x

x

S

Mastogloia cuneata (Meister) Simonsen

x

x

x

-

x

x

S

Mastogloia decipiens Hustedt

x

-

x

x

x

x

C, H, T

Mastogloia decussata Grunow

x

x

-

x

-

-

 

Mastogloia delicatissima Hustedt

-

x

-

-

x

-

H

Mastogloia depressa Hustedt

x

-

-

-

-

-

H

Mastogloia discontinua Kemp & Paddock

-

x

-

-

-

-

 

Mastogloia emarginata Hustedt

-

x

x

x

x

x

C, S

Mastogloia erythraea Grunow f. 1

x

x

x

-

x

x

? K, M, R, T, U, V

Mastogloia erythraea Grunow f. 2

x

-

x

x

x

-

? K, M, R, T, U, V

Mastogloia erythraea Grunow f. 3

-

-

x

x

-

-

? K, M, R, T, U, V

Mastogloia exIlis Hustedt

x

x

x

-

x

x

U

Mastogloia fallax Cleve

x

-

-

x

-

-

S

Mastogloia fimbriata (Brightwell) Cleve

x

x

x

x

x

x

C, K, R, S

Mastogloia foliolum Brun in A. Schmit et al.

x

-

-

x

x

x

 

Mastogloia gilberti A. Schmidt

-

-

x

x

-

-

H, K

Mastogloia gracilis Hustedt

x

-

x

-

-

-

 

Mastogloia graciloides Hustedt

x

x

-

x

x

x

S

Mastogloia grunowii A. Schmidt

-

x

-

-

-

-

H, K, O, S, U, V

Mastogloia horvathiana Grunow

-

x

-

-

x

x

C, H, K, S

Mastogloia ignorata Hustedt

x

x

x

x

x

x

C, H, O, P

Mastogloia jelinecki Grunow

-

-

-

-

x

-

K, R

Mastogloia labuensis var. lanceolata Hustedt

x

-

x

x

x

x

H

Mastogloia laminaris Grunow in Cleve

x

-

x

-

-

-

H, K, S

Mastogloia lanceolata Thwaites in W. Smith

-

x

x

-

-

x

H, R, S

Mastogloia laterostrata Hustedt

x

-

-

x

-

-

 

Mastogloia linearis Simonsen

-

x

x

x

x

x

S

Mastogloia macdonaldii Greville

x

-

-

x

-

-

C, G, H, K, R, S, V

Mastogloia mauritiana Brun in A. Schmit et al.

x

-

x

-

x

x

H, R, T

Mastogloia mediterranea Hustedt

-

-

-

-

-

x

H

Mastogloia neoborneensis Pennesi et al.

x

-

-

-

-

-

 

Mastogloia occulta Voigt

-

x

-

-

-

-

 

Mastogloia ovalis A. Schmidt

x

x

x

x

x

x

C, H, S

Mastogloia ovata Grunow

x

-

x

x

x

x

H, J, K, M, R, T, V

Mastogloia ovulum Hustedt

x

x

x

x

x

x

H, R, S, T, U

Mastogloia ovum paschale (A. Schmit) Mann

x

-

x

x

x

x

H, R

Mastogloia paradoxa Grunow

x

x

-

x

-

x

C, D, E, K, O, R

Mastogloia peragalli Cleve

x

x

x

-

-

x

C, H, K, R

Mastogloia pisciculus Cleve

x

x

x

x

x

x

P

Mastogloia pseudolatecostata Yohn & Gibson

-

-

x

-

-

-

S

Mastogloia pseudoparadoxa Hustedt

-

x

-

-

-

-

 

Mastogloia pumila (Gurnow) Cleve

-

-

x

-

-

-

C, O, R

Mastogloia punctatissima (Greville) Ricard

x

x

x

-

x

x

R, S

Mastogloia punctifera Brun

x

-

x

x

-

x

C, H, K, R

Mastogloia pusilla Grunow

x

-

x

x

-

x

C, G, K, P, R, U, V

Mastogloia pusilla var. linearis Östrup

-

-

-

-

-

x

C, H

Mastogloia pusilla var. subcapitata Hustedt

x

x

-

-

x

x

 

Mastogloia regula Hustedt

-

-

-

x

x

-

O, S

Mastogloia rhombica Cleve

-

x

-

-

-

-

 

Mastogloia robusta Hustedt

x

x

-

x

x

x

P, S

Mastogloia similis Hustedt

-

-

x

-

x

-

C, O, S

Mastogloia smithii (Thwaites) W. Smith

-

x

-

x

-

-

K, R

Mastogloia smithii var. amphicephala Grunow

-

x

-

-

-

-

K

Mastogloia subaffirmata Hustedt

x

x

x

x

x

x

H, S, T, V

Mastogloia subaspera Hustedt

x

-

x

x

-

-

C, H, R

Mastogloia tenuis Hustedt

-

x

-

-

-

-

 

Mastogloia umbra Paddock & Kemp

x

x

-

x

x

x

 

Mastogloia undulata Grunow

x

-

-

x

x

-

H, K, R

Mastogloia urveae Witkowski et al.

-

x

x

x

x

-

 

Mastogloia varians Hustedt

-

-

-

x

-

x

S

Mastogloia vasta Hustedt

x

x

x

-

x

x

C, O

Mastogloia sp. cf. acutiuscula v. elliptica Hust.

-

x

-

-

-

-

 

Mastogloia sp. cf. exilis Hustedt

x

x

x

-

-

-

 

Mastogloia sp. cf. kariana Grunow

-

-

-

-

x

-

 

Mastogloia sp. cf. ovum paschale (Schm.) Mann

-

-

-

-

x

-

 

Mastogloia sp. cf. smithii Thwaites

-

-

-

x

-

x

 

Mastogloia sp. 3

x

x

-

-

x

-

 

Mastogloia sp. 8

-

x

-

-

-

-

 

Mastogloia sp. 15

-

-

-

x

-

-

 

Mastogloia sp. 17

-

x

x

-

x

-

 

Mastogloia sp. B

x

-

x

-

-

-

 

Mastogloia sp. C

x

-

-

-

-

-

 

Mastogloia sp. D

-

x

-

x

x

-

 

Mastogloia sp. F

-

x

-

x

-

-

 

Mastogloia sp. J

-

-

x

-

-

-

 

Mastogloia sp. K

-

x

-

-

-

-

 

Mastogloia sp. M

-

-

x

-

-

-

 

Mastogloia sp. N

-

-

-

-

x

-

 

Mastogloia sp. P

x

-

x

-

-

-

 

Mastogloia sp. U

-

-

-

-

x

-

 

Mastogloia sp. Z

x

-

-

-

-

-

 

 

Table 1. Presence of Mastogloia species in the investigated sites in the Mediterranean area.

Reported presence on the coasts of the Mediterranean Sea and related seas. C: Belegratis & Economou-Amilli, 2002. D: Foged, 1985a. E: Foged 1985b. G: Giaj-Levra, 1927. H: Hustedt, 1931-1959. J: Marchesoni, 1954. K: Peragallo & Peragallo, 1897-1908. M: Rampi, 1940. N: Rampi, 1942. O: Sabanci, 2013. P: Tomas, 1982. R: Vilicic et al., 2002. S: Witkowski et al., 2000. T: Zanon, 1940. U: Zanon, 1947. V: Zanon, 1948.