scholarly journals Species richness and biogeographical affinities of the marine molluscs from Bahía de Chamela, Mexico

2020 ◽  
Vol 8 ◽  
Author(s):  
Eduardo Ríos-Jara ◽  
Cristian Galván-Villa ◽  
María del Carmen Esqueda-González ◽  
Manuel Ayón-Parente ◽  
Fabián Rodríguez Zaragoza ◽  
...  

For more than 10 years (2007-2018), the benthic macroinvertebrates of Bahía de Chamela (Mexican Pacific) were sampled at 31 sites (0-25 m depth). A total of 308 species of the five main classes of benthic molluscs were obtained (106 bivalves, 185 gastropods, 13 polyplacophorans, two scaphopods and two cephalopods). This is a significant increase in the number of species (246 new records) compared to the 62 species previously recorded more than 10 years ago. The distribution in the 31 localities of the bay is given for the first time for most of the species, together with information on its ecological rarity (incidence in the samples). Two families of bivalves (Veneridae and Mytilidae) and three families of gastropods (Calyptraeidae, Muricidae and Collumbellidae) comprised ~ 30% of all species. Ecological rarity was evident with 45 families (45.0%) with only one species and 178 species (57.8%) collected in one site and 67 (21.8%) in two sites. The molluscs of Bahía de Chamela represent 12.2% of all species recorded in the Mexican Pacific. Their biogeographic affinities are mostly related to the Tropical Eastern Pacific (TEP) including the oceanic islands and a few are restricted to the Tropical Mexican Pacific (TMP). Some have broader distributions to adjacent northern and southern temperate regions of the American Pacific, one to the western Atlantic, two pantropical (PAN) and two cosmopolitans (COS). The range distribution of each species was reviewed and updated, thus finding that seven species have extended their ranges of geographic distribution.

Zootaxa ◽  
2018 ◽  
Vol 4521 (1) ◽  
pp. 61 ◽  
Author(s):  
CHRISTOPHER CRUZ-GÓMEZ ◽  
J. ROLANDO BASTIDA-ZAVALA

The family Chrysopetalidae has been poorly studied from the Pacific coast of Mexico compared to other families. Specifically from the southern Mexican Pacific, only two species of the family have been recorded in previous studies, Chrysopetalum occidentale and Paleanotus chrysolepis. In this study 311 specimens were revised, and nine species, belonging to six genera were found. Eight of these species are new records from the southern Mexican Pacific coast: Arichlidon watsonae n. sp., Bhawania cf. goodei, Chrysopetalum elegantoides, C. maculata, Hyalopale sp., Paleaequor psamathe, Paleanotus bellis and P. purpurea. A new species is also described, Arichlidon watsonae n. sp., which is characterized by the curved tips blades of the falcigers and their small and ovoid palps. Additionally, the genera Arichlidon and Hyalopale are recorded by first time from the Tropical Eastern Pacific. 


Check List ◽  
2016 ◽  
Vol 12 (4) ◽  
pp. 1948 ◽  
Author(s):  
Ana Cristina Bolaños ◽  
Vera Lúcia Ramos Bononi ◽  
Adriana De Mello Gugliotta

Ganoderma is a cosmopolitan genus of fungi with species distributed in temperate and tropical regions. Species of Ganoderma in living Leguminosae were observed in Park de la Salud in Pance, Cali, Colombia and we record G. multiplicatum for the first time from Colombia. A distribution map of this genus in the Neotropical region is presented. 


Check List ◽  
2019 ◽  
Vol 15 (5) ◽  
pp. 767-772 ◽  
Author(s):  
Andrea Polanco F. ◽  
Luisa F. Dueñas ◽  
Jorge Leon ◽  
Vladimir Puentes

Acanthonus armatus Günther, 1878 is reported for the first time in the southwestern Caribbean region, off Colombia. Remote Operate Vehicle videos and towed camera still photographs captured 13 images of A. armatus between 2215 and 2564 m. These are the first records of the species in the Caribbean continental coast of Colombia, representing a range extension to the southwestern Caribbean region, since previous records are from the northeastern Caribbean. Some photos of the specimens and the current distribution of the species in the Caribbean region are provided and reviewed.


2021 ◽  
Vol 774 ◽  
pp. 155-177
Author(s):  
Hossein Ashrafi ◽  
J. Antonio Baeza ◽  
Zdeněk Ďuriš

The present study focuses on shrimps belonging to the genus Lysmata Risso, 1816, collected from Madagascar during the Atimo Vatae expedition carried out in 2010. Lysmata malagasy sp. nov. is a new species belonging to the clade named “long accessory ramous” or “cosmopolitan” in previous phylogenetic studies. The new species can be distinguished from the only two other representatives of this group in the Indo-west Pacific, L. ternatensis De Man, 1902, and L. trisetacea (Heller, 1861), by the accessory ramus of the lateral antennular flagellum consisting of four elongated articles. Lysmata lipkei Okuno & Fiedler, 2010 is reported here from Madagascar with a remarkable extension of its known range after its original description from Japan. This species has also been reported from Singapore and, as alien species, from Brazil. Lastly, L. kuekenthali De Man, 1902 known from numerous localities in the Indo-West Pacific biogeographic area, is reported for the first time from Madagascar. Results of the present morphological and molecular analyses suggest that L. hochi Baeza & Anker, 2008 from the Caribbean Sea is a synonym of the Indo-West Pacific L. kuekenthali, and thus the latter species is alien in the western Atlantic.


2019 ◽  
Vol 88 (2) ◽  
pp. 163-182 ◽  
Author(s):  
Arsalan Khalili-Moghadam ◽  
Lech Borowiec ◽  
Alireza Nemati

Abstract The ant fauna from the Chaharmahal va Bakhtiari Province of Iran was surveyed. As a result, a total of 28 ant species belonging to 11 genera of Formicidae were collected and identified. Species status is proposed for Messor barbarus subsp. mediosanguineus Donisthorpe, 1946, the species status of Messor platyceras Crawley, 1920 is restored with Messor platyceras var. rubella Crawley, 1920 as a new synonym of the nominotypical form, and Camponotus oasium ninivae Pisarski, 1971 is removed from synonyms of Camponotus oasium Forel, 1890. The genera Messor Forel, 1890, with seven species and Cataglyphis Förster, 1850 with six species, have the highest species richness. Messor mediosanguineus Donisthorpe, 1946, Pheidole koshewnikovi Ruzsky, 1905 and Camponotus oasium ninivae Pisarski, 1971 were recorded in Iran for the first time.


2020 ◽  
Vol 6 (2) ◽  
pp. 168 ◽  
Author(s):  
Fernando Araujo Perini ◽  
Júlia Quintaneiro Mota

We report new records of the White-Tailed Deer (Odocoileus virginianus) in Brazil based on specimens deposited in scientific collections. These new records expand the known geographic distribution of the species in Brazil southwards in the states of Roraima and Amapá, the latter the first record of the species below the equator line in Brazil, and register it for the first time in the state of Amazonas. These records contribute to increase the knowledge of the geographical distribution of O. virginianus in Brazil and highlights the importance of museum collections as a source of biogeographic and ecological data.


Zootaxa ◽  
2020 ◽  
Vol 4791 (1) ◽  
pp. 1-71 ◽  
Author(s):  
HASSAN A. DAWAH ◽  
MOHAMMED A. ABDULLAH ◽  
JOHN C. DEEMING

Chloropidae are of major economic importance, since the larvae of some species are pests of cereals and grasses, some are parasitoids and predators, and adults of some Hippelates spp. visit and transmit or are suspected of transmitting yaws sores in man and animals and by feeding around the eyes are vectors of Brazilian Purpuric Fever. Within the framework of the exploration of the biodiversity of Diptera in Southwest Saudi Arabia a survey of the grass flies fauna in 18 sites in Jazan, Asir, and Najran in south-western Saudi Arabia was performed mainly using Malaise traps and sweep nets from 2010– to 2016. Sixty six species of 43 genera and three subfamilies of Chloropidae were identified and are recorded from Saudi Arabia, 20 of them for the first time and three are described as new species: Elachiptera arabica Deeming sp. n.; Kwarea ismayi Deeming sp.n. and Tricimba turneri Deeming sp.n.. This makes the total number of Chloropidae species in Saudi Arabia 95 (including 29 species previously recorded). Seventy images are presented. The species of Chloropidae listed are predominantly of Afrotropical/ Palaearctic origin. An updated checklist of Chloropidae species of Saudi Arabia is presented.This study adds new records of Chloropidae to the Saudi Arabian Diptera fauna, which will become reference points for research detailing the systematic geographic distribution and for identifying other specimens submitted for identification. Further species will undoubtedly be discovered with more research involving collecting and rearing methods. 


Zootaxa ◽  
2012 ◽  
Vol 3379 (1) ◽  
pp. 1 ◽  
Author(s):  
STEFFEN BAYER

Various publications of the last twelve years have shown that the species richness of the genus Psechrus is much higherthan was assumed 30 years ago. Based upon trends in the structures of the copulatory organs, for the first time, eight spe-cies groups are recognised and, including the present study, 46 species are now known. 20 species are recognised anddescribed as new: P. ulcus sp. nov., P. aluco sp. nov., P. decollatus sp. nov., P. elachys sp. nov., P. norops sp. nov., P.arcuatus sp. nov., P. laos sp. nov., P. inflatus sp. nov., P. pakawini sp. nov., P. demiror sp. nov., P. jaegeri sp. nov., P.vivax sp. nov., P. obtectus sp. nov., P. fuscai sp. nov., P. clavis sp. nov., P. hartmanni sp. nov., P. zygon sp. nov., P. tauri-cornis sp. nov., P. crepido sp. nov. and P. schwendingeri sp. nov. Two species are removed from synonymy with P. sin-gaporensis Thorell, 1894: P. annulatus Kulczyński 1908 (stat. nov.) and P. libelti Kulczyński 1908 (stat. nov.). One juniorsynonym of P. tingpingensis Yin, Wang & Zhang, 1985 is recognised: P. xinping Chen, Zhang, Song & Kim, 2002 (syn.nov.). New records are reported: P. libelti from Thailand, Malaysia & Brunei; P. ancoralis Bayer & Jäger, 2010 from Thai-land; P. himalayanus Simon, 1906 from Bhutan; P. ghecuanus Thorell, 1897 from Laos. Pre-epigynes/pre-vulvae of 20Psechrus species are examined and illustrated. In these species they apparently exhibit consistent and species-specificcharacters. However, since in several species only one subadult female was available for examination and in 57% of thePsechrus species even none at all, the characters of the pre-epigyne/pre-vulva are not included in the Psechrus identifica-tion key introduced herein. Additional information on the biology of Psechrus—for which the trivial name “lace-sheetweavers” is introduced herein—is provided.


2001 ◽  
Vol 75 (3) ◽  
pp. 680-696 ◽  
Author(s):  
Ross H. Nehm

Collectively, studies of the structure of Neogene diversity change in tropical American mollusks have lacked 1) species-level analyses within well-established clades; 2) consideration of abundance and sample size on diversity estimates and comparisons; and 3) geographic comparisons within temporal intervals. This study takes all three factors into consideration and compares Miocene to Recent species richness patterns in tropical American marginellid gastropod species within the clade Prunum+Volvarina. Rarefaction analyses of more than 16,000 specimens from more than 500 samples are used to standardize comparisons of species richness through time and space. Species richness in Prunum+Volvarina from the Miocene to the Recent of the Tropical Western Atlantic (TWA) is compared along a latitudinal gradient from north to south (Florida, the Dominican Republic, and Venezuela). Additionally, temporal patterns of diversity change are compared between the TWA and the Tropical Eastern Pacific (TEP: Peru, Ecuador, Colombia, Panama, and Costa Rica).As is the case with most Neogene lineages, the number of marginellid specimens and samples differ significantly through both time and space. Rarefaction analyses of both specimens and samples indicate that: 1) significant geographic differences in species richness were detected between the Miocene, Pliocene, Pleistocene, and Recent of the TWA; 2) temporal patterns of species richness were similar in the northern and southern TWA; 3) from the Miocene to the Recent, marginellid species richness in the TEP has always been significantly less than TWA diversity; and 4) from the Miocene to the Recent, TWA diversity decreased significantly, whereas TEP diversity was stable and low. Separate rarefaction analyses using the numbers of specimens and samples did not always produce concordant results and indicate that the unit of analysis influences estimates of species richness. Discordant specimen/sample rarefaction results may be a product of sample size. Intrinsic ecological and evolutionary differences do not appear to be primary contributors to differences in marginellid species richness between the TEP and TWA.


2018 ◽  
Vol 58 ◽  
pp. 12 ◽  
Author(s):  
Weslly Franco ◽  
Rodrigo Machado Feitosa

Despite the large number of studies investigating ant diversity in Brazilian biomes, no ant-related studies have been carried out in Campos Gerais, a grassland physiognomy in Paraná state. The present study is the first inventory of the ant fauna in one of the few conservation units protecting the Campos Gerais landscape, the Guartelá State Park (PEG). Sixty samples were collected from different habitats within PEG using pitfall traps. Qualitative samples of leaf litter were collected from forest fragments and submitted to Winkler extractors. In addition, manual qualitative sampling was carried out in the various physiognomies within the PEG. A total of 163 species was collected and sorted into 43 genera and nine subfamilies. Five genera and 28 species were recorded for the first time in the state of Paraná. Out of these, 17 species were also recorded for the first time in the Southern Region of Brazil and two were recorded for the first time to the country. The significant species richness in the PEG and the high number of new records is a strong sign of this ecosystem’s potential to reveal taxonomic novelties. These results suggest that PEG, and the Campos Gerais as a whole, should be the target of greater conservation efforts to preserve native remnants.


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