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  • Iran  (18)
  • Species  (7)
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  • 1
    Publikationsdatum: 2021-05-19
    Beschreibung: A total of 98 marine mammal records from Iranian coastal waters of the Persian Gulf and Gulf of Oman were compiled of which 66 are previously unpublished new records. Seventy-nine were from the Persian Gulf and 16 from the Gulf of Oman coast. The largest numbers of records were from Qeshm Island and Bushehr Provinces. Records of finless porpoise (Neophocaena phocaenoides), Indo-pacific humpback dolphin (Sousa chinensis) and Indo-pacific bottlenose dolphin (Tursiops aduncus) were by far the most numerous probably reflecting their inshore distribution and local abundance. Other species recorded are common dolphin (Delphinus capensis tropicalis), rough-toothed dolphin (Steno bredanensis), Risso’s dolphin (Grampus griseus), false killer whale (Pseudorca crassidens), and dugong (Dugong dugon). Evidence of 22 Mysticetes were obtained eight of which were tentatively identified as Bryde’s whales (Balaenoptera edeni), three as fin whales (Balaenoptera physalus) and three as Humpback whales (Megaptera novaeangliae). The largest threat to marine mammals in Iran is likely to be incidental capture in fishing gear. Six by caught finless porpoises were recorded and this species may be particularly vulnerable to incidental mortality in gillnets. Recommended marine mammal research, conservation and management small projects in Iran are described.
    Beschreibung: Published
    Schlagwort(e): Ecology ; Neophocaena phocaenoides ; Sousa chinensis ; Tursiops aduncus ; Delphinus capensis tropicalis ; Steno bredanensis ; Grampus griseus ; Pseudorca crassidens ; Balaenoptera edeni ; Balaenoptera physalus ; Megaptera novaeangliae ; Marine mammals ; Species diversity ; Distribution patterns ; Species ; Marine
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp.927-944
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2021-05-19
    Beschreibung: Sillaginids are one of the important fishes in coastal waters of Persian Gulf, whose larvae of different species are morphologically very similar to each other and identification of them to species level is very difficult. In this study a total of 4195 Sillaginidae larvae were collected from five inlets (Shif, Lashkari, Ramleh, Dubbeh, Farakeh) and one sampling site in the coastal area of Bushehr Province using a Bongo-net. Morphological and genetic methods were used to identity larvae of this family. The larvae were morphologically divided into two groups, depending on 34 or 38 myomers. The larvae with 34 myomeres were identified as Sillago sihama. To identify larvae with 38 myomers, 12 individuals of postflexion larvae were selected and the morphological characteristics such as number of dorsal and anal fins as well as DNA barcoding of COI were used. According to morphological characteristics, the larvae were divided into two species; Sillago arabica and Sillago attenuata. Genetic studies were done by sequencing of 625 base pair of COI gene. Genetic distances calculated using K2P model between these two species was 18% to 19.7% which indicate that DNA barcoding confirms morphological method and it can be used for identifying younger larvae whose fin rays have not been developed and are unidentifiable with morphological methods.
    Beschreibung: Published
    Schlagwort(e): Sillaginid ; Perciformes ; Sillaginidae ; Sillago arabica ; Sillago attenuata ; Sillago sihama ; Cytochrome oxidase subunit ; Species ; Identification ; Larvae ; DNA ; Morphological ; Methods ; Fish ; Genetic
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp.1-10
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Publikationsdatum: 2021-05-19
    Beschreibung: During the conducted cruises for implementation of projects entitling, "Studying Shrimp Nursery in Bushehr Esturies" and "Assessment of Bentic Stocks through Swept Area Method" in Iranian waters of the Persian Gulf, some samples of aquatics were collected. Among the collected samples the species belonging to Platycephalidae were identified in the region and are included: Platycephalus indicus, Grammoplites suppositus, Grammoplites scaber G. suppositus had more abundance than two other species (56%) and P. indicus had the largest size of total length.
    Beschreibung: Published
    Schlagwort(e): Plathycephalidae ; Platycephalus indicus ; Grammoplites suppositus ; Grammoplites scaber ; Grammoplites suppositus ; Fish ; Species ; Identification ; Abundance ; Bentic ; Area
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp.33-48
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Publikationsdatum: 2021-05-19
    Beschreibung: The present investigation was undertaken to identify fish larva and estimate their abundance, diversity and evenness indices. Twelve stations were sampled monthly during daytime hours by Bongonet in the kharg and khargoo regions of Persian Gulf from January 2005 through December 2006. Forty family of fish larva were identified, Families of Silaginidae, Clupeoidea, Blenidae and Athrinidae consisted of more than 61 percent of all specimen; The abundance of specimen were more during spring through fall months and least during winter. The number and abundance of identified families varied from cruise to cruise and station to station; the average amount of diversity, Species Richness and evenness in investigated region were computed 1.93, 12 and 0.68, respectively. Temperature and salinity of water during this study were between 16-34°C and 35-42 gr/lit. There weren’t any significant correlation between fish larva indices and above factors.
    Beschreibung: Iranian Fisheries Science Research Institute
    Beschreibung: Published
    Schlagwort(e): Diversity ; Abundance ; Ichtyoplankton ; Fish larvae ; Sample ; Silaginidae ; Clupeoidea ; Blenidae ; Athrinidae ; Specimen ; Species ; Temperature ; Salinity ; Coastal waters
    Repository-Name: AquaDocs
    Materialart: Report , Refereed
    Format: 140pp.
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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    In:  http://aquaticcommons.org/id/eprint/21991 | 18721 | 2018-01-21 11:43:36 | 21991 | Iranian Fisheries Science Research Institute
    Publikationsdatum: 2021-07-06
    Beschreibung: The fish larvae identification survey was carried out in Iranian waters of Oman Sea from Hormuz strait to Gwader Bay in 2009 at pre and post monsoon periods. Sampling was done by plankton net with 300 μ mesh size. Totally, 168 specimens were collected that belong to the three genera; Benthosema، Diaphus and Lampadena. Two species named Benthosema pterotum, B.fibulatum were identified. B.pterotum has pigment on the tip of the lower jaw and snout whereas B .fibulatum lacks these discriminative characters. Two genera Diaphus and Lampadena have a row of melanophores in post-anal region ventrally which discriminate them from Benthosema. Diaphus is separated from Lampadena with a small melanophore at the hypural.
    Schlagwort(e): Biology ; Fisheries ; Larvae ; Myctophidae ; Identification ; Oman Sea ; Iran ; Benthosema ; Diaphus ; Lampadena ; Benthosema pterotum
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 41-50
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
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    In:  http://aquaticcommons.org/id/eprint/22697 | 18721 | 2018-05-16 18:28:55 | 22697 | Iranian Fisheries Science Research Institute
    Publikationsdatum: 2021-07-09
    Beschreibung: The study and research of abundance and diversity variation of fish larva (Ichthyoplankton stages) was done in Gowatr Bay during autumn 2006 - summer 2007. Five stations were selected for sampling, and Bongo-Net with 300µ mesh size was towing from bottom to surface. During of survey, totally 531 larvae belong to 11 families were collected and identified. The mean abundance estimated 12.17 larvae per 10 m^2, in which three fish larva family including: Gobiidae, Clupeidae and Engraulidae were dominant (86% of relative abundance). The result showed that there was significant differences between pre and post-monsoon fish larvae abundances (p〈.05), and there were not significant differences between stations (p〉.05). In pre-monsoon 4 families were identified of which Clupeidae introduced as indicator group, whereas in post-monsoon 10 families were identified and Gobiidae was indicator family, accompany with increase of diversity. PCA result was shown, temperature as the main factor affected on fish larvae assemblage was found with a significant decrease of 11.9 °C after monsoon phenomenon.
    Schlagwort(e): Biology ; Fisheries ; Fish larva ; Indicator family ; PCA ; Monsoon ; Gowatr Bay ; Oman Sea ; Iran ; abundance ; Ichthyoplankton ; mesh size
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 427-436
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    In:  http://aquaticcommons.org/id/eprint/22977 | 18721 | 2018-06-08 22:18:10 | 22977 | Iranian Fisheries Science Research Institute
    Publikationsdatum: 2021-07-12
    Beschreibung: Studies on larval fish abundance allow important inferences about the spawning grounds, reproduction season and migration pattern of fishes. Larval densities can also be used to estimate the abundance index, which in turn can be correlated to the fisheries yield, and provide an alternative approach for measuring the size of the spawning stock. Previous studies in this ecosystem have focused on the abundance of fish larva without consideration of daily fish larva variations. ... In this research we consider the monsoon as an important phenomenon, affecting the daily fish larval distribution.
    Schlagwort(e): Biology ; Ecology ; Environment ; Fisheries ; Larval fish ; Ecological groups ; Day/night ; Monsoon ; Ecology ; Chabahar Bay ; Iran
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1609-1615
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Publikationsdatum: 2021-06-25
    Beschreibung: Sillaginids are one of the important fishes in coastal waters of Persian Gulf, whose larvae of different species are morphologically very similar to each other and identification of them to species level is very difficult. In this study a total of 4195 Sillaginidae larvae were collected from five inlets (Shif, Lashkari, Ramleh, Dubbeh, Farakeh) and one sampling site in the coastal area of Bushehr Province using a Bongo-net. Morphological and genetic methods were used to identity larvae of this family. The larvae were morphologically divided into two groups, depending on 34 or 38 myomers. The larvae with 34 myomeres were identified as Sillago sihama. To identify larvae with 38 myomers, 12 individuals of postflexion larvae were selected and the morphological characteristics such as number of dorsal and anal fins as well as DNA barcoding of COI were used. According to morphological characteristics, the larvae were divided into two species; Sillago arabica and Sillago attenuata. Genetic studies were done by sequencing of 625 base pair of COI gene. Genetic distances calculated using K2P model between these two species was 18% to 19.7% which indicate that DNA barcoding confirms morphological method and it can be used for identifying younger larvae whose fin rays have not been developed and are unidentifiable with morphological methods.
    Schlagwort(e): Biology ; Fisheries ; cytochrome oxidase subunit I ; fish identification ; Sillago arabica ; Sillago attenuata ; Sillago sihama ; Iran ; Bushehr province ; Persian Gulf ; DNA ; Species ; identification
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-10
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
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    In:  http://aquaticcommons.org/id/eprint/22364 | 18721 | 2018-03-28 22:09:25 | 22364 | Iranian Fisheries Science Research Institute
    Publikationsdatum: 2021-07-04
    Beschreibung: Khark and Kharko Islands are located at far northern point of fringing coral reefs in the Iranian coast of the Persian Gulf. These coralline are the habitats of the wildlife refuge with total area of 2400ha and located in the territory of Bushehr province. The present study was carried out from July 2006 to June 2007 over 12 stations. Sampling was conducted obliquely from bottom using Bongo-net plankton sampler with 500µ of mesh size. In total, 1808 specimens, both in pre and post flexion stages were collected and examined. They were belonging to 45 families from different ecological groups (21 coralline and 24 non coralline fish larvae families ). 96% of examined fish larvae were in preflexion stage. Some families are new ones from the area . Among identified families, Clupeidae, Blenniidae, Sillaginidae, Atherinidae and Tripterygiidae were dominant families in studied area and the peaks were estimated in spring. The mean abundance of total fish larvae was 18.71 per 10m² of sea surface. The most abundant families were Clupeidae, Sillaginidae, Blenniidae, Atherinidae and Tripterygiidae in which comprised 65% of fish larvae. Abundance in spring showed significant difference with other seasons. The distribution pattern of fish larvae changed seasonally in both groups, increasing in east coasts of Khark Island and in three coastal stations during summer and autumn and in west coast of Khark in spring. The distribution of fish larvae seemed to be correlated to sea currents.
    Beschreibung: Article includes abstract in Farsi on last page.
    Schlagwort(e): Biology ; Fisheries ; Coralline fish larvae ; Abundance ; Khark and Kharko Islands ; Persian Gulf ; Iran
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 173-184
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
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    In:  http://aquaticcommons.org/id/eprint/23905 | 18721 | 2018-08-01 16:03:42 | 23905 | Iranian Fisheries Science Research Institute
    Publikationsdatum: 2021-07-15
    Beschreibung: During the conducted cruises for implementation of projects entitling, "Studying Shrimp Nursery in Bushehr Esturies" and "Assessment of Bentic Stocks through Swept Area Method" in Iranian waters of the Persian Gulf, some samples of aquatics were collected. Among the collected samples the species belonging to Platycephalidae were identified in the region and are included: Platycephalus indicus, Grammoplites suppositus, Grammoplites scaber G. suppositus had more abundance than two other species (56%) and P. indicus had the largest size of total length.
    Schlagwort(e): Biology ; Fish ; Species ; Identification ; Abundance ; Bentic ; Area ; Plathycephalidae ; Platycephalus indicus ; Grammoplites suppositus ; Grammoplites scaber ; Grammoplites suppositus ; Bushehr province ; Persian Gulf ; Iran
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 33-48
    Standort Signatur Erwartet Verfügbarkeit
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