جستجوی مقالات مرتبط با کلیدواژه "biogeography" در نشریات گروه "کشاورزی"

This paper records six species and five genera of mites in the family Laelapidae from soil in Punjab, Pakistan. Five species are recorded from Pakistan for the first time – Euandrolaelaps karawaiewi (Berlese, 1904), Gaeolaelaps minor (Costa, 1968), Gymnolaelaps kabitae Bhattacharyya, 1968, Ololaelaps translineatus (Barilo, 1991), and Stratiolaelaps scimitus (Womersley, 1956). Cosmolaelaps lutosus sp. nov. is described as a new species.

An updated checklist of the hoverflies including distribution and seasonal occurence data of known species in Nepal is presented. The list is based on all available published literature on taxonomy, biodiversity, ecology, and biological aspects of the syrphid fauna of Nepal up to 2023. A total of 205 species from three subfamilies and 63 genera are known to occur in Nepal. Among the three subfamilies, Eristalinae shares maximum species (111 species, 54%), followed by Syrphinae (90 species, 44%), and Microdontinae (four species, 2%). is presented. Among these, 48 (23%) species are recorded in Nepal only. The distribution of known hoverfly species in the country is not uniform, with the Bagmati (82 species) and Koshi (75 species) provinces having the greatest number of species, while the Madhesh (four species) and Lumbini (one species) provinces having the lowest records. The highest number of species are recorded in May (51 species), followed by July (50 species) and June (48 species). Winter season records are relatively low, and distribution data are still incomplete for some sites. Based on the present review, comprehensive and systematic sampling across the entire country is necessary for further exploration of Nepal's hoverfly fauna.

In July 2022 several grasshoppers of the genus Miramella Dovnar-Zapolskij, 1932 were encountered on two localities in Montenegro. Voucher specimens were sampled. It became clear that these did not belong to the species Miramella albanica Mistshenko, 1952. They also deviated in morphology and habitat from Miramella irena (Fruhstorfer, 1921). After further investigation of external morphology and the male genitalia, confirmation was derived about its undescribed status of the specimens and the species is here formally described and illustrated as Miramella demissa sp. nov. The new species is known from a restricted area in southern Montenegro. It is adapted to particularly low elevations, quite aberrant for the genus. A key to both sexes is given for the species in the region.

This study is based on freshwater halacarid mites collected from two different provinces (Isparta and Muğla) of Turkey. Limnohalacarus wackeri (Walter, 1914) and Soldanellonyx monardi Walter, 1919 are reported for the first time for Turkish freshwater halacarid fauna. Additionally, both nymphal stages of Halacarellus hyrcanus (Viets, 1928) and deutonymph of Porohalacarus alpinus (Thor, 1910) are also recorded for the first time for Lake Eğirdir, Isparta. Each species is illustrated, briefly diagnosed with notes and shown on a map of Turkey depicting all recorded freshwater halacarid species to this date.

The paper presents a compilation of the documented occurrence of the date stone beetle Coccotrypes dactyliperda across the globe. The data presented here have been compiled based on an exhaustive search of academic journal databases, collections presented in research portals and digitised holdings of national libraries. A visualisation of the global distribution shows that the presence of Coccotrypes dactyliperda is circumscribed by climatic factors.

The plankton and semi-plankton samples examined from Mizoram state of northeast India (NEI) revealed speciose and diverse Rotifera assemblage including a total richness (S) of 162 species belonging to 19 families and 35 genera. The reports of six species new to India, four species new to NEI and 76 new records to Mizoram merit biodiversity interest. The occurrence of one Australasian, one Oriental, seven Paleotropical, one Holarctic, one cosmo (sub) tropical and five other interesting species imparts biogeographical value while several species indicate regional distribution importance. Lecanidae > Lepadellidae > Brachionidae > Trichocercidae collectively comprised 69.7% of total richness (S). Lecane > Lepadella > Trichocerca are diverse genera (~52.0% of S) while Brachionus spp. (~8.0%) deserve cautious mention. The rotifer diversity pattern is predominantly ‘tropical’ with a large component of cosmopolitans (~71.0% of S) while tropicopolitan and pantropical species contributed ~16.0%. This study indicated high richness of the littoral-periphytonic and relative paucity of planktonic taxa. Analysis of periphytic, sessile, colonial and benthic taxa, and of cryptic diversity in certain species-groups merit attention for further biodiversity update and we estimate occurrence of 250+ rotifer species in Mizoram.

This paper provides information on the geographic distributions of two cyprinid species: Hemiculter leucisculus (Basilewsky, 1855) and Alburnus caeruleus Heckel, 1843, in the world and the entire drainage systems in Iran. The new distribution records were taken from Maroon River (Jarrahi River system) and Chardaval River (Karkheh river system), both in Tigris River basin showing wide and narrow distribution ranges of these two cyprinid fishes, respectively. The main introduction sites and distribution range of H. leucisculus is the southern parts of the Caspian Sea basin in Iran from where it has probably been translocated to other Iranian basins along with exotic Chinese carps. Although A. caeruleus is native to Tigris River basin, it had been already recorded only from Gamasiab and Doab rivers in 2009 in Karkheh River system (Tigris) and thus the present study extends its distribution range. In case of alien species, human-mediated fish introductions may increase faunal similarity among primary drainages due to a strong tendency for taxonomic homogenization caused primarily by the widespread introduction of cyprinid fishes. Fish faunal homogenization might be highest in drainages (e.g. Caspian Sea and Tigris basins) subjected to the greatest degree of disturbance associated with human settlement, infrastructure and change in land use. The provided data might be used in conservation program of freshwater fishes of Iran.

A biogeographical analysis of the Angiosperm family Rubiaceae in S.W. Aisa is presented. This analysis is based on the treatment of 20 genera with 152 species and numerous subspecies in vol. 176 of “Flora Iranica” and other relevant literature. In the territory of this flora 32.9% of the Rubiaceae species are endemic. According to their center of distribution all species of the family are placed into phytogeographical groups: Oriental-Turanian (54.6%), Hyrcanian + temperate Eurasian + N. Hemisphere (18.4%), Himalayan and Sino-Japanese (9.9%), Mediterranean (9.2%) and Paleotropic and Saharo-Sindian (7.9%). Relevant biogeographical problems, aspects of morphological and ecological diversification as well as questions of evolution, phylogeny and taxonomy are discussed in greater detail in the following chapters: Paleotropical and Himalayan relationships, old and recent links with the Mediterranean, the Oriental-Turanian region as a center of diversification, the Hyrcanian Province and contacts with the N. Hemisphere.

Morphometric differentiations may explain biogeographic distinctions among populations of a given species. The possibility of morphometric distinctions between two populations of Eurygaster maura L. collected from the northeast (Golestan province) and the northwest (Azarbayejan province) of Iran was examined using principal component analysis over 25 body measurements (eight absolute and 17 proportional, separately). The northeast individuals were relatively larger and darker in colour than those of the northwest; total body lengths of the former were 13.56 ± 0.49 and 13.25± 0.38 mm (female and male, respectively), and the respective values for the latter were 12.74 ± 0.39 and 12.63 ± 0.49 mm. Generally, proportional indices including genital width had positively the highest contributions to population discrimination. Different habitats and climatic conditions may explain, in part, these morphological variations between the studied populations.