جستجوی مقالات مرتبط با کلیدواژه « hormozgan province » در نشریات گروه « زیست شناسی »

The Dehgin reagent and paired basin with 4.2 Km2 is located in geographic coordinates of 57 12 29 to 57 11 25 eastern longitude and 27 46 6 to 27 44 21 north latitude. In this study, 190 plant species were collected and introduced. These species belong to 50 families (1 family of Angiospermae, 47 families of Dicotyledone and 2 families of Monocotyledone) and 149 genera. Compositae with 23 species, Papilionaceae with 18 species and Gramineae with 20 species are main families of this region. Studing of plants life forms by Raunkier method showed that Therophytes with 41 and Hemichryptophytes with 18 percent of species are the most frequent life forms. Phanerophytes with 14 percent and Chamaephytes with 16 percent are other life forms. High percentage of Therophytes indicates that the area has dry and deserty climate. Investigation on geographical distribution of plants species showed 26 percent (49 species) of species belong to Saharo-Sindian,12 percent (22 species) to Irano-Touranian and 3 percent (5 species) to Cosmic zones. 60 species were medicinal plants that 15 species had high heath care.

Zhumeria majdae is one of the important، unic and endemic species of Hormozgan province that is used for diarrhea, stomachache, cold, headache, wound and as coolness from ancient times by natives people of Hormozgan. This investigation was carried out for investigating the changes of quantity and quality of essential oil of Z. majdae in field and provenance. This research started from 1387 and lasted three years. In third year the aerial parts of plants were collected from Sarchahan and Hajiabad Fields and Geno Mountain at the altitude of 850 m. Extracted Essential oil by water distillation (3h). The yields of essential oils in Sarchahan (3.2%), Hajiabad (5.2%) and Geno provenance (2.1%) were calculated. Analysis and identification of chemical compositions of the essential oil were performed by GC and GC/MS. In all 25 compounds, Linalool (55.1 %), Camphor (26.2 %), Limonene (3.4 %), Camphene (2.6 %) and Borneol (1.7 %) were the main components of Z. majdae in Geno provenance. Linalool (60.4 %), Camphor (23.7 %), Geraniol (2.1 %), Borneol (2.1 %) and Limonene (1.3 %) were the main components of Z. majdae in field of Sarchahan and Linalool (59%), Camphor (23.7 %), Limonene (4.5 %), Borneol (2.7 %) and Camphene (2.7 %) were the main components of Z. majdae in field of Hajiabad. With regard to good conditions in field, It is recommended to programming to cultivate in field.

 During 2018-2019, to investigate the sexual dimorphism in the body shape and morphological variations of Aphaniops hormozensis inhabiting in Mehran and Shur rivers of the Hormozgan basin using the geometric morphometric method, 80 specimens were collected.  In the laboratory, the left side of the samples was photographed and 17 landmark points were digitalized on the 2D images. To eliminate non-shape data including size, direction, and position, the extracted data were analyzed by the generalized procrustes analysis using discriminant function analysis based on the p-value of T-test Hoteling. The results of the present study showed significant differences between the body shape of males and females within the population and male-male and female-female inter-populations (p < 0.05). Male species in both populations had a smaller head, lower body depth, and longer caudal peduncle than those of females. Males and females of the Mehran River have a deeper and longer caudal peduncle than those of Shur Rivers.

Macrobenthos are benthic animals that live in or on the bottom sediments which used as a bioindicators to assess the presence of contaminants, in natural aquatic systems. This study aimed to achieve the relationship between sediment composition and macrobenthic communities, distribution. Sampling was done monthly in 2011-12 by a powerboat, and VanVeen grab with 0.04 cross section, were used for sampling from sediment. Sampling areas was Bandar Abbas, Jask and Lengeh coastal waters in Hormozgan Porvince. Results showed that Silt was dominant in sediment of Bandarabbas and Sand was dominant in Lengeh and Jask sediment in coastal waters. Data Analysis indicated that there was a significant relationship between macrobenthos communities and silt (P<0.01) and sand (P<0.05). In addition, there was no relationship between macrobenthos communities and organic materials.

In general, fishing activities are considered as one of the most important environmental disturbances in increasing the vulnerability of the mangrove ecosystems due to their destructive effects on the process of sedimentation and wave currents, decreasing biodiversity, and introducing oil pollutants into these ecosystems. Therefore, investigating and mapping the intensity of fishing activities in mangrove habitats are of great needs in conducting the vulnerability assessment and providing managerial solutions and empowerment of these ecosystems to minimize and compensate the damages caused by environmental hazards. The aim of this study was to investigate, determine, and delineate and the intensity of fishing activities in the mangrove habitats of the Hormozgan province. To this end, the map of intensity of fishing activities was prepared in Khamir, Qeshm, Tiab, Sirik and Jask habitats through mapping the mangrove habitats, drawing 598 cell networks of 4 × 4 km in the coastal waters and the available geospatial data, and number of vessels in the fishing ports of the Hormozgan province. The results showed that in terms of the geographic distribution and the number of vessels in the fishing ports of the Hormozgan province, the intensity of the fishing activities in the mangrove habitats is ranked as follows: Khamir habitat> Qeshm habitat> Tiab habitat> Jask habitat> Sirik habitat. The results of this study can be used as a prerequisite for assessing the vulnerability of the mangroves of Iran.

This study investigated the fish species inhabiting hot springs of Hormozgan province including Geno, Khoorgoo, Sargez Khoorgoo, Siahkosh and Pahash . According to previous studies and the present study, the Aphanius ginaonis was the unique species in Geno hot spring. Fingerlings and mature females of A. ginaonis were remarkably found in the spring in August. While, previous studies reported the the breeding season for this species in July. Therefore, it is likely that A. ginaonis reproduce throughout the summer. On the other hand A. dispar was found as the unique species in Khoorgoo and Pahash springs. Moreover, a worm form arthropod larvae was recognized in the gill of Khoorgoo Aphanius. In addition, a remarkable number of A. dispar larvae were observed in August, showing that the reproduction seaoson of this species in the pahash spring is in August. In Sargez Khoorgoo spring, A. dispar with mature ovaries were found in March. We observed Aphanius sp. and two varieties of Iranian cichlid Iranocichla hormuzensis species that were clearly different in two water sources.

Gargoor, a wired traditional pot, is used to catch demersal fish on rocky substrates. The objective of this study was to investigate the effect of bait's type and shape on catching efficiency of Gargoors in Bandar Lengeh waters (Hormozgan). The study area was divided into near-shore waters (station 1) and off-shore waters (station 2). Sampling was performed by Seventy-two pots with the same soaking time (24 hours) during 48 cruises. Baits (Sardin, Cuttlefish, and Catfish) were cut into small pieces with similar weight (100 gr). Each bait was held in the cover (polyethylene net with 1 cm mesh size) and hanged inside the pots in two shapes (sliced and minced). Generally, the only bait type that had the significant difference between two shapes, was cuttlefish (p<0.05). Minced cuttlefish in the off-shore station in spring and sliced catfish in the near-shore station in summer had the highest and the lowest CPUE respectively. Based on our results, among the bait type, cuttlefish and between the bait shape, the minced shape had the best efficiency regarding the amount of catch. Therefore, to increase the amount of catch, using of minced cuttlefish is recommended.