ESPONJAS Y CNIDARIOS (HYDROZOA Y ANTHOZOA) DEL  ARRECIFE ORO VERDE; COBERTURA BENTÓNICA Y AFINIDAD FAUNÍSTICA CON SISTEMAS ARRECIFALES DE  VERACRUZ, MÉXICO

RESUMEN. Durante el periodo junio-agosto de 2015, se realizaron muestreos en 12 puntos geográficos del arrecife Oro Verde para explorar las porciones norte, sur, centro, este y oeste, con la finalidad de registrar especies de esponjas, hidrocorales y antozoos, así como para estimar la cobertura de algas, esponjas, corales, gorgonias y de componentes abióticos (e. g., arena y pavimento) mediante fototransectos de 50 m de longitud. Con esta información se realizaron análisis de escalamiento multidimensional no métrico (NMDS) para explicar similitudes de las unidades de muestreo. Además, se comparó la composición de esponjas y corales del arrecife Oro Verde con los demás sistemas arrecifales de Veracruz a fin de determinar afinidades mediante el método NMDS; para explicar diferencias significativas entre grupos disimiles se utilizó la prueba de similitud ANOSIM. Se registraron un total de 37 especies del Phylum Porifera y 29 especies del Phylum Cnidaria. Las especies con mayor frecuencia en el arrecife fueron las esponjas Callyspongia armigera, Niphates erecta y Amphimedon compressa, y los corales Montastraea cavernosa, Porites astreoides, Siderastrea sidérea y Colpophyllia natans. En cuanto a cobertura, las algas filamentosas y frondosas fueron las más abundantes (49.4±7.7% y 20±9.7%, respectivamente); con respecto a los corales que presentaron baja cobertura (9.5±6.1%), se identificaron principalmente M. cavernosa, C. natans y S. siderea. La riqueza faunística y la cobertura bentónica se distribuyen de manera homogénea en el arrecife, dado que los lugares de muestreo manifestaron semejanzas en estos atributos comunitarios. La composición de esponjas del arrecife Oro Verde presentó mayor afinidad con los arrecifes aledaños y con los arrecifes sumergidos del sur de Veracruz; en cambio, en cuanto a la riqueza de corales, el arrecife Oro Verde es más semejante con los arrecifes colindantes. Las discrepancias con los demás arrecifes se atribuyen a la falta de inventarios completos (e. g., Tuxpan) y/o por presentar especies con limitada distribución.Sponges and cnidarians (Hydrozoa and Anthozoa) from Oro Verde reef; benthic coverage and faunal affinity with the reef systems of Veracruz, MexicoABSTRACT. Sampling was conducted in twelve geographical points of the Oro Verde reef during the June-August 2015 period, in-order-to record species of sponges, hydrocorals and anthozoans, and to estimate the coverage of algae, sponges, corals, sea fans and abiotic components (e.g., sand and pavement) using 50 m long photo transects. We explored the northern, southern, central, eastern and western section of the reef. Analysis of non-metric multidimensional scaling (NMDS) was performed to explain similarities of the sampling units based on the information obtained. In addition, the composition of sponges and coral reefs from Oro Verde reef was compared with the other reef systems of Veracruz to determine affinities using the NMDS method. The similarity test ANOSIM was used to explain significant differences among dissimilar groups. A total of 37 species of Phylum Porifera and 29 species of Phylum Cnidaria were recorded. The most common species in the reef were the sponges Callyspongia armigera, Niphates erecta, and Amphimedon compressa, and the corals Montastraea cavernosa, Porites astreoides, Siderastrea siderea, Colpophyllia natans. Filamentous and frondose algae were the most abundant in coverage (49.4 ± 7.7% and 20 ± 9.7%, respectively), compared to reef corals that showed low coverage (9.5 ± 6.1%), which consisted mainly of M. cavernosa, C. natans and S. siderea. The faunal richness and the benthic coverage are distributed in a homogeneous way in the reef as sampling sites revealed similarities in these community attributes. The composition of sponges from Oro Verde reef presented higher affinity with the adjacent reefs and with the submerged reefs of southern of Veracruz. However, Oro Verde reef is more similar with neighboring reefs in species richness of corals. Discrepancies with the other reefs are attributed to the lack of complete inventories (e. g., Tuxpan) and / or by presenting species with limited distribution.

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Distribution of naked amoebae in the soils of the steppe zone of Ukraine

Visnyk of Lviv University Biological series ◽

10.30970/vlubs.2020.82.14 ◽

2020 ◽

pp. 159-166

Author(s):

M. Patsyuk ◽

Keyword(s):

Cluster Analysis ◽

Multidimensional Scaling ◽

Species Complex ◽

Steppe Zone ◽

Common Species ◽

Molecular Clusters ◽

The Other ◽

Steppe Region ◽

Species Complexes ◽

Naked Amoebae

As a result of the study, in the steppe zone of Ukraine (Odessa, Mykolaiv, Kirovohrad region), 12 species of naked amoebas were identified, which according to the modern Eukaryot system belong to three molecular clusters Tubulinea Smirnov et al., 2005, Discosea Cavalier-Smith, 2004., Discoba Simpson and Hampl et al., 2009. This species Vahlkampfia sp. (1), Vahlkampfia sp. (2), Deuteramoeba mycophaga Page, 1988, Saccamoeba stagnicola Page, 1974, Vexillifera sp., Vannella sp. Ripellaplatypodia Smirnov, Nassonova, Chao et Cavalier-Smith, 2007, Cochliopodium sp. (1), Mayorella sp., Thecamoeba striata Penard, 1890, Stenamoeba stenopodia (Page, 1969) Smirnov et al., 2007, Acanthamoeba sp. (1). In the studied steppe soils, the most common were Vahlkampfia sp. (2), S. stenopodia, Vahlkampfia sp. (1), Vexillifera sp., Cochliopodium sp. (1); the least common – R. platypodia, D. mycophaga, T. striata, Mayorella sp. As a result of the cluster analysis, it was found that the largest share of common species is observed between Mykolaiv and Kirovograd regions (0.71) and Odessa and Kirovograd regions (0.53); the smallest is between the Odessa and Mykolaiv regions (0.43). According to the results of cluster analysis, the faunistic complexes of soil species of amoebae of the steppe region of Ukraine are united into two clusters: one of them being complexes characteristic of the Odessa region, and the other complexes of the Mykolaiv and Kirovograd regions. According to the results of nonparametric multidimensional scaling, it is established that the species complex of soil amoebae in the Kirovograd and Mykolaiv regions is determined by the increased soil temperature and acidity, compared to the Odessa region. As for moisture, this factor has little effect on the species complexes amoebae steppe region of Ukraine.

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News from the west: the orchid bees from Parque Nacional do Iguaçu, Paraná, Brazil (Hymenoptera, Apidae, Euglossina)

Biota Neotropica ◽

10.1590/1676-0611-bn-2018-0645 ◽

2019 ◽

Vol 19 (2) ◽

Author(s):

Luiz R. R. Faria ◽

Betânia Cristina Neves ◽

Araceli Judith Arce ◽

Maria Noel Clerici Hirschfeld ◽

Fernando César Vieira Zanella

Keyword(s):

Species Richness ◽

Species Composition ◽

Common Species ◽

The Other ◽

Southeastern Brazil ◽

Severe Winter ◽

The West ◽

Semideciduous Forest ◽

Orchid Bees ◽

Seasonal Semideciduous Forest

Abstract: Orchid bees were surveyed at Parque Nacional do Iguaçu, the largest remnant of Seasonal Semideciduous Forest in Brazil. Seven species were collected, and Eufriesea violacea (Blanchard) was the most common species, followed by Euglossa annectans Dressler. The observed species richness and species composition agree with what is known for the local euglossine faunas in fragments of Seasonal Semideciduous Forest of southern and southeastern Brazil. On the other hand, the abundance of individuals was remarkably low. The occurrence of a severe winter in 2013 and the collection of several males in other fragments suggest that this noteworthy low abundance can be fortuitous.

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Salinity and freshwater discharge determine rotifer distribution at the Mossoró River Estuary (Semiarid Region of Brazil)

Brazilian Journal of Biology ◽

10.1590/s1519-69842010000300011 ◽

2010 ◽

Vol 70 (3) ◽

pp. 551-557 ◽

Cited By ~ 11

Author(s):

AMA. Medeiros ◽

JEL. Barbosa ◽

PR. Medeiros ◽

RM. Rocha ◽

LF. Silva

Keyword(s):

Species Richness ◽

Rainy Season ◽

Salinity Gradient ◽

River Estuary ◽

Positive Influence ◽

Freshwater Discharge ◽

The Other ◽

Semiarid Region ◽

Inverse Estuary ◽

Species Richness And Abundance

The present study aimed at evaluating differences in rotifer distribution in three estuarine zones in an inverse estuary located in the Semiarid Region of Brazil. Zones were chosen based on their proximity to the ocean and river border as a means of reflecting a horizontal salinity gradient. High freshwater discharge during the rainy season was the major determinant of rotifer composition. On the other hand, due to higher salinity values during the dry season, very low values of species richness and abundance were observed in all zones. Therefore, the study highlights the constraints of salinity and the positive influence of seasonality and river proximity on rotifer species in a semiarid estuarine environment.

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Diversity and distribution of large branchiopods in Kiskunság (Hungary) in relation to local habitat and spatial factors: implications for their conservation

Marine and Freshwater Research ◽

10.1071/mf08154 ◽

2008 ◽

Vol 59 (10) ◽

pp. 940 ◽

Cited By ~ 14

Author(s):

Liesbet Boven ◽

Bram Vanschoenwinkel ◽

Els R. De Roeck ◽

Ann Hulsmans ◽

Luc Brendonck

Keyword(s):

Species Richness ◽

Hot Spot ◽

Local Environment ◽

Common Species ◽

Habitat Diversity ◽

Ecological Knowledge ◽

Species Dispersal ◽

Local Conditions ◽

Spatial Factors ◽

Large Branchiopods

Large branchiopods are threatened worldwide by the loss and degradation of their temporary aquatic habitats owing to drainage and intensive agriculture. Sound ecological knowledge of their diversity and distribution is a prerequisite to formulate effective conservation measures. In the present study, large branchiopods were collected from 82 temporary freshwater pools belonging to five habitat types in Kiskunság (Hungary). Dormant propagule bank analysis complemented the field survey. Eleven species were found, with large branchiopods occurring in more than half of the study systems. The high regional species richness and occurrence frequency of large branchiopods make Kiskunság a true ‘hot spot’ of large branchiopod diversity. The local environment was more important than spatial factors (isolation) in explaining the presence of the most common species. Dispersal was most likely not limiting for the large branchiopods in the study area and colonisation success of different species was differentially affected by local conditions, possibly invertebrate predation risk and hydroperiod. Meadow pools and wheel tracks contributed most to regional species richness through the presence of rare and exclusive species. To conserve branchiopod diversity, we stress the importance of high habitat diversity in the landscape and the need to conserve neglected habitats such as wheel tracks.

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Structure of three subtropical bat assemblages (Chiroptera) in the Andean rainforests of Argentina

Mammalia ◽

10.1515/mammalia-2014-0084 ◽

2016 ◽

Vol 80 (1) ◽

Author(s):

Mariano S. Sánchez

Keyword(s):

Species Richness ◽

Relative Abundance ◽

Seasonal Changes ◽

Common Species ◽

Guild Structure ◽

Trophic Guild ◽

Long Tail ◽

Mist Net ◽

Yungas Forests

AbstractI evaluated bat assemblages in terms of species richness, relative abundance, trophic guild structure, and seasonal changes at three sites along of the Southern Yungas forests. A total of 854 individuals were captured, representing 25 species of three families, with an effort of 27,138 m of mist net opened per hour. Subtropical assemblages showed a similar structure to those from tropical landmark, with a dominance of frugivorous Phyllostomid; in addition, a few species were abundant, followed by a long tail of less common species. However, subtropical sites differed due to the dominance of the genus

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Natural infection of phlebotomines (Diptera: Psychodidae) in a visceral-leishmaniasis focus in Mato Grosso do Sul, Brazil

Revista do Instituto de Medicina Tropical de São Paulo ◽

10.1590/s0036-46652007000200011 ◽

2007 ◽

Vol 49 (2) ◽

pp. 119-122 ◽

Cited By ~ 21

Author(s):

João Cezar do Nascimento ◽

Byanca Regina de Paiva ◽

Rosely dos Santos Malafronte ◽

Wedson Desidério Fernandes ◽

Eunice Aparecida Bianchi Galati

Keyword(s):

Visceral Leishmaniasis ◽

Natural Infection ◽

Leishmania Species ◽

Common Species ◽

The Other ◽

Lutzomyia Longipalpis ◽

Leishmania Chagasi ◽

Mato Grosso ◽

Negative Results ◽

Mato Grosso Do Sul

The main purpose of this study was to investigate natural infection by Leishmania in phlebotomine females in a visceral-leishmaniasis focus in Antonio João county in Mato Grosso do Sul State, Brazil. Between June and October 2003, the digestive tracts of 81 females captured in Aldeia Campestre, Aldeia Marangatu and Povoado Campestre were dissected. The females were separated by species, location, area and date of capture into 13 groups and kept in ethanol 70%. To identify the Leishmania species using the PCR technique, amplifications of the ribosomal-DNA (rDNA) and mini-exon genes were analyzed. Of the 81 specimens, 77 (95%) were Lutzomyia longipalpis, making this the most common species; only one specimen of each of the species Brumptomyia avellari, Evandromyia cortelezzii, Evandromyia lenti and Nyssomyia whitmani was found. Trypanosomatids were identified in eight of the nine groups of Lutzomyia longipalpis (10.39%) one group from Aldeia Campestre, one from Aldeia Marangatu and six from Povoado Campestre; of the eight groups, one from Aldeia Marangatu and another, with promastigotes forms also confirmed by dissection (1.23%) from Povoado Campestre, were identified by PCR as Leishmania chagasi (2.6%). The other groups gave negative results. These findings indicate that there is a high risk of leishmaniasis transmission in this area.

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Distribution of moss-inhabiting diatoms along an altitudinal gradient at sub-Antarctic Îles Kerguelen

Antarctic Science ◽

10.1017/s0954102007000041 ◽

2007 ◽

Vol 19 (1) ◽

pp. 17-24 ◽

Cited By ~ 19

Author(s):

Niek J.M. Gremmen ◽

Bart van de Vijver ◽

Yves Frenot ◽

Marc Lebouvier

Keyword(s):

Species Richness ◽

Species Composition ◽

Altitudinal Gradient ◽

Cross Validation ◽

Strong Relationship ◽

Distribution Patterns ◽

Common Species ◽

Important Variable ◽

Diatom Species ◽

Expected Species Richness

Altitudinal gradients provide excellent opportunities to study relationships between species distribution and climatic variables. We studied the species composition of 39 samples of moss-inhabiting diatoms, collected at 50 m intervals from 100–650 m above sea level. The samples contained a total of 130 diatom species, of which 51 occurred in 10 or more samples. Altitude appeared to be the most important variable explaining variation in species composition. Of the 51 common species, 33 showed a significant relationship with altitude. Although the majority of the latter declined with increasing altitude, for nine species the probability of occurrence first increased with increasing elevation, but decreased again at higher altitudes, and four species increased systematically with elevation. As a result, expected species richness per sample decreased from an estimated 43 at 100 m to 25 species per sample at 650 m. Diatom distribution patterns proved to be suitable predictors of the altitudinal position of sample sites. Cross-validation yielded a strong relationship between predicted and observed altitudes.

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Changing Stony Coral Tissue Loss Disease Dynamics Through Time in Montastraea cavernosa

Frontiers in Marine Science ◽

10.3389/fmars.2021.699075 ◽

2021 ◽

Vol 8 ◽

Author(s):

Greta Aeby ◽

Blake Ushijima ◽

Erich Bartels ◽

Cory Walter ◽

Joseph Kuehl ◽

...

Keyword(s):

Common Species ◽

Disease Prevalence ◽

Tissue Loss ◽

Coral Tissue ◽

Disease Dynamics ◽

Western Atlantic ◽

Fort Lauderdale ◽

Stony Coral ◽

Montastraea Cavernosa ◽

Lesion Morphology

Stony coral tissue loss disease (SCTLD) is affecting corals across the Western Atlantic and displays species-specific and regional differences in prevalence, incidence, degree of mortality, and lesion morphology. We examined two Florida sites with different temporal histories of disease emergence; Fort Lauderdale where SCTLD is endemic and the Lower Florida Keys where SCTLD has recently emerged. Our objectives were to (1) assess the potential impact of SCTLD on overall reef condition by surveying reefs in each region, (2) in a single common species, Montastraea cavernosa, examine differences in SCTLD prevalence, colony mortality, and lesion morphology in each region, and (3) look for differences in contagion by conducting transmission experiments using lesions from each region. Reef surveys found sites in both regions had low coral cover, high algae cover, and similar coral species composition. SCTLD prevalence was higher in the Lower Keys than at Fort Lauderdale and two of the common species, M. cavernosa and S. siderea at Fort Lauderdale were dominated by smaller colonies (<5 cm) whereas larger colonies occurred in the Lower Keys. Tagged M. cavernosa SCTLD-affected colonies were followed for 2 years at one site in each region. In both years, Fort Lauderdale colonies showed declining disease prevalence, low colony mortality, and disease lesions were mainly bleached spots lacking tissue loss. In contrast, Lower Keys colonies tagged in the first year maintained 100% disease prevalence with high mortality, and disease lesions were predominantly tissue loss with no bleached edges. However, SCTLD dynamics changed, with year two tagged colonies showing declining disease prevalence, low mortality, and lesion morphology switched to a mixture of bleached polyps and tissue loss with or without bleached edges. Lesion morphology on colonies was a significant predictor of amount of tissue loss. Aquaria studies found the rate of SCTLD transmission using lesions from the different zones (emergent and endemic) were similar. Our study highlights that differences in coral mortality from SCTLD are not necessarily linked to host species, lesion morphology is reflective of subsequent rate of mortality, and disease dynamics change through time on reefs where the disease has newly emerged.

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ENSAMBLES DE MACROALGAS SOBRE SUPERFICIES MUERTAS DE CORALES ESCLERACTINIOS (ANTHOZOA: SCLERACTINIA) EN EL ARRECIFE ORO VERDE, VERACRUZ, MÉXICO

CICIMAR Oceánides ◽

10.37543/oceanides.v32i1.192 ◽

2017 ◽

Vol 32 (1) ◽

pp. 11

Author(s):

IVONNE LUNA ORTEGA ◽

VICENCIO DE LA CRUZ FRANCISCO

Keyword(s):

Coral Species ◽

Taxonomic Composition ◽

Scleractinian Corals ◽

Porites Astreoides ◽

Orbicella Faveolata ◽

Ordination Analysis ◽

Species Similarity ◽

Filamentous Macroalgae ◽

Algal Assemblages ◽

Montastraea Cavernosa

Las macroalgas son abundantes en el arrecife Oro Verde, Veracruz pero, hasta ahora, se desconocía su riqueza taxonómica, y se presume que presentan asentamientos en los corales escleractinios hermatípicos. Por ello el presente trabajo investigó qué especies de corales presentaron colonizaciones algales; además, se determinó la composición taxonómica y la similitud de los ensambles de macroalgas entre las especies de corales escleractinios. Se establecieron diez puntos de muestreo de manera sistemática en el arrecife; en cada lugar de estudio se colocó un transecto de banda de 50 x 2 m para localizar y recolectar macroalgas en superficies muertas de corales escleractinios. La frecuencia de aparición de las algas se estimó con base en el total de corales estudiados, así como para cada especie coral. Para explicar similitudes y diferencias significativas de la composición de ensamblajes macroalgales entre especies de corales se aplicaron análisis de similitud y ordenación. Los corales escleractinios con ensambles de algas fueron Siderastrea siderea, Montastraea cavernosa, Pseudodiploria strigosa, Colpophylia natans, Stephanocoenia intersepta, Porites astreoides, Orbicella annularis, Orbicella faveolata. De un total de 100 colonias coralinas revisadas se determinaron 32 especies de macroalgas, las cuales están representadas en tres divisiones, 10 órdenes y 15 familias. Las macroalgas corticadas, foliosas corticadas y filamentosas fueron las más representadas en especies. Las algas de mayor frecuencia sobre los corales masivos fueron Laurencia obtusa, Amphiroa rigida y Caulerpa chemnitzia. Los corales masivos con mayor número de registros de algas fueron S. siderea (9 especies), M. cavernosa (19) y P. strigosa (17). Los ensambles algales en los corales masivos presentaron baja similitud, sin embargo no se detectaron grupos significativamente disimiles. Solamente S. siderea y M. cavernosa son ligeramente parecidos en la composición ficológica. Los resultados sugieren que los corales masivos del arrecife Oro Verde son vulnerables a la colonización de algas, pero es necesario indagar qué condiciones preceden al asentamiento algal.Macroalgal assemblages on dead surfaces of scleractinian corals (Anthozoa: Scleractinia) in the Oro Verde reef, Veracruz, MexicoBenthic macroalgae are abundant in the Oro Verde reef but their taxonomic richness was hitherto unknown and it is presumed to present settlements on the massive corals. For this reason, the present work investigated which species of massive corals show algal colonization. Also, their taxonomic composition was determined, and the similarity of the algal assemblages between species of scleractinian corals was measured. Ten sampling points were systematically established in the reef, where a transect band of 50 x 2 m at each site was placed to locate and collect algae fron the dead surfaces of scleractinian corals. The frequency of occurrence of algae species was estimated based on the total number of coral species studied, as well as on each coral species. Similarity and ordination analysis were applied in order to explain similarities and significant differences of the phycological composition among the coral species. Scleractinian corals with algal assemblages were: Siderastrea siderea, Montastraea cavernosa, Pseudodiploria strigosa, Colpophylia natans, Stephanocoenia intersepta, Porites astreoides, Orbicella annularis, Orbicella faveolata. Thirty-two species of algae were identified from a total of 100 revised coral colonies which are represented in 3 divisions, 10 orders and 15 families. The corticated, foliose corticated and filamentous macroalgae were the most represented species. The most frequent algae on massive corals were Laurencia obtusa, Amphiroa rigida and Caulerpa chemnitzia. Massive corals with higher algal records were S. siderea (9 species), M. cavernosa (19 species) and P. strigosa (17 species). The algal assemblages on the massive corals presented low similarity. However, no significant dissimilar groups were detected. Only S. siderea and M. cavernosa are relatively similar in phycological composition. The results suggest that the massive corals of the Oro Verde reef are vulnerable to the colonization of algae, but it is necessary to investigate the conditions preceding algal settlement.

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Henricia djakonovisp. nov. (Echinodermata, Echinasteridae): a new sea star species from the Sea of Japan

PeerJ ◽

10.7717/peerj.2863 ◽

2017 ◽

Vol 5 ◽

pp. e2863 ◽

Cited By ~ 2

Author(s):

Anton Chichvarkhin

Keyword(s):

New Species ◽

Sea Of Japan ◽

Common Species ◽

Sympatric Species ◽

Variable Number ◽

The Other ◽

The Sea Of Japan ◽

Sea Star ◽

The Pacific ◽

Russian Waters

A new sea star species,H. djakonovisp.n., was discovered in Rudnaya Bay in the Sea of Japan. This is a sympatric species of the well-known and common speciesHenricia pseudoleviusculaDjakonov, 1958. Both species are similar in body size and proportions, shape of skeletal plates, and life coloration, which distinguishes them from the otherHenriciaspecies inhabiting the Sea of Japan. Nevertheless, these species can be distinguished by their abactinal spines: in both species, they are short and barrel-like, but the new species is the onlyHenriciaspecies in Russian waters of the Pacific that possesses such spines with a massive, smooth, bullet-like tip. The spines inH. pseudoleviusculaare crowned with a variable number of well-developed thorns. About half (<50%) of the abactinal pseudopaxillae in the new species are oval, not crescent-shaped as inH. pseudoleviuscula.

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