Reproduction,Growth, Mortality and Yield of the Goatfish Upeneus sulphureus in Northern Bay of Bengal,Bangladesh

Journal of Ichthyology - Information on stock condition and reproductive biology are important for fisheries conservation and management planning. This study examined reproduction, growth,...     

New Species and New Records of Eriophyoid Mites (Acari: Eriophyoidea) from West Bengal,India

Two new species viz., Acaricalus indicus n. sp. from Fern (indet) and Neooxycenus dilleniae n. sp. from Dillenia pentagyna Roxb. (Dilleniaceae) are described from West Bengal. Four species viz., Acaphyllisa araucuriae Flechtmann (2000), Aculops pretoriensis Smith Meyer and Ueckermann (1990), Tetra tyrohylae Smith Meyer (1992) and Tetra visci Smith Meyer (1992) are recorded for the first time from India. Besides, 23 other species are reported for the first time from West Bengal. An eriophyoid species is recorded for the first time from a species of Fern in India.     

Length–weight relationships of three fish species from the Bay of Bengal,Bangladesh

The present study describes the length–weight (LWR) of three fish species, Chela cachius (Hamilton, 1822), Coilia ramcarati (Hamilton, 1822) and Sardinella gibbosa (Bleeker, 1849) captured in the Bay of Bengal, Bangladesh, from December 2014 to November 2015. Fishes were captured with either gill nets (mesh size 2.0–5.0 cm) or set bag nets (mesh size 2.0–4.0 cm). The b values in the study varied from 2.88 (C. ramcarati) to 3.00 (S. gibbosa), with a mean a value of 2.94 at p < .001 for all three species. In addition, the study provides initial information on LWRs for C. cachius and C. ramcarati and maximum length records for C. cachius and S. gibbosa.     

Habitat modelling of juvenile Hilsa Tenualosa ilisha (Clupeiformes) in the coastal ecosystem of the northern Bay of Bengal,Bangladesh

Hilsa shad Tenualosa ilisha comprises the largest and most valuable single fishery of Bangladesh. This study was conducted to identify suitable habitats for Hilsa juvenile in the northern Bay of Bengal along the coast of Bangladesh using Geographical Information Systems (GIS) based Multi-Criteria Evaluation (MCE) of water temperature, dissolved oxygen, pH, salinity, turbidity, current, depth and rainfall. Landsat imagery and 8 thematic layers were analyzed with ENVI and GIS capabilities, and developed as a series of GIS models to identify and prioritize the appropriate habitats for Hilsa juvenile. The study covered 29.484 km² water body and revealed that 56% (16.388 km²) is the most suitable, 21% (6.054 km²) is moderately suitable and 24% (7.042 km²) is not suitable which was consistent with field verification. The assemblage of marinebrackish-freshwater ecosystems with favourable ecological parameters and rainfall patterns are very much important for supporting juvenile Hilsa in the study area. The results are useful for habitat-specific sanctuary development as the efficient conservation may lead to higher production of adult Hilsa and increase the economic benefit to the fishers.     

Three New Records of the Genus Aphis (Hemiptera: Aphididae) from Korea

Aphis fabae Scopoli 1763, A. hederae Kaltenbach 1843 and A. oenotherae Oestlund 1887 are recognized for the first time in Korea: A. fabae, nation-widely on various host plants; A. hederae on Hedera rhombea and Schefflera actinophylla in Jeju Island; A. oenotherae nation-widely on Oenothera odorata. They are redescribed, illustrated, and measured for the apterous and alate viviparous females.     

Feeding of Cardinalfish Epigonus affinis (Epigonidae) from the Seamount of the Northern Part of the Vavilov Ridge,the Atlantic Ocean

Journal of Ichthyology - Food of cardinalfish Epigonus аffinis in the northeastern part of the Vavilov Ridge (Guinean Elevation) consists of the pelagic organisms that are a part of the...     

Length‐weight relationships of Acanthopagrus longispinnis (Valenciennes, 1830), Raconda russeliana (Gray, 1831) and Coilia neglecta (Whitehead, 1967) from the Bay of Bengal coast,Bangladesh

Current study reports the length‐weight relationships (LWRs) of three marine fish species collected from the fishermen catches covering three seasons i.e., rainy, autumn and winter between June, 2016 and February, 2017. Fishermen caught the species using beach seine net (3.5 cm mesh size) and set bag net (0.5 cm mesh size) up to 200 m far away from the shoreline. The LWRs for fish species were W = 0.0180TL^3.192 for A. longispinnis, W = 0.0109TL^2.971 for R. russeliana and W = 0.0098TL^2.942 for C. neglecta with their r² values of 0.971, 0.962 and 0.997, respectively.     

Diet Composition and Intensity of Feeding of Tenualosa ilisha (Hamilton, 1822) Occurring in the Northern Bay of Bengal,India

Feeding intensity and diet composition of Hilsa Shad (Tenualosa ilisha) from Northern Bay of Bengal were studied between June 2010 and March 2011. The stomach contents of 320 fishes were analyzed from the northern part of the Bay of Bengal to understand the food items of this species. The major constituents of food are organic debris (26.06 ± 5.19 % SD), diatoms (31.22 ± 11.97 % SD), other algae (12.41 ± 2.62 % SD), and crustaceans (3.50 ± 1.28 % SD). The most abundant species of diatoms were Coscinodiscus, Pleurosigma, Bacillaria, Nitzschia, Biddulphia, Diatoma and Asterionella. The stomach of Hilsa was found to be almost empty during June to October while it was almost full during November to March. Significant positive correlation among feeding intensity, chlorophyll-A concentration and salinity of the ambient water indicated that feeding in T. ilisha is influenced by a number of factors. Strong positive correlation between percentage occurrence of diatoms and intensity of feeding indicated their preference for diatom–food.     

新疆羽纹藻属（硅藻门）的中国新记录

2001年7月至8月,在新疆维吾尔自治区17个采样地采集硅藻标本,经光镜观察,共鉴定出羽纹藻属(硅藻门)的中国新记录5种2变种,即:喜盐羽纹藻Pinnularia halophilaKrammer、模糊型羽纹藻P.obscuriformisKram-mer、奥瑞恩达羽纹藻P.oriundaKrammer、瑞卡德羽纹藻P.reichardtiiKrammer、近曲缝羽纹藻P.substreptorapheKrammer、近曲缝羽纹藻博恩变种P.substreptoraphevar.bornholmianaKrammer和淡绿型羽纹藻小变种P.viridiformisvar.minorKrammer,并对其分类学特征以及生境特征进行了描述。为新疆的藻类资源提供了基础资料,为中国淡水羽纹藻科志书的编写积累了资料。     

采自东北地区的红菇属3个中国新记录种

对采自中国吉林省及内蒙古部分地区的红菇属真菌标本进行研究,确认3种为中国新记录种：橙焰红菇Russula aurantioflammans Ruots., Sarnari&Vauras,蜜红菇Russula melitode Romagn.,拉汗帕利红菇Russula lakhanpalii A. Ghosh, K. Das&R.P. Bhatt。详细描述了形态特征并绘制形态线条图。通过宏观形态特征和ITS序列的对比证实了形态学的准确性。     

中国蝴蝶新种、新亚种及新记录种（VI）

记述蛱蝶科12新种,2新亚种,1新型,6新记录,4个在《中国蝶类志》中未记载的已知种。所有模式标本均保存在西北农林科技大学昆虫博物馆。     

Pennahia ovata,a new sciaenid from the Bay of Bengal

A new sciaenid,Pennahia ovata, is described from the Bay of Bengal. It differs from its most similar congener,P. anea, in having weakly differentiated teeth on the lower jaw, usually 24–25 dorsal fin soft rays and 18–19 upper+lower gill rakers, a deep body and a long second anal fin spine.     

On the Record of a Spot-Fin Porcupine Fish,Diodon hystrix (Linnaeus, 1758) from Mandarmani,Bay of Bengal Coast of West Bengal,India

A dead specimen of a spot-fin porcupine fish Diodon hystrix was observed on the sea shore in Mandarmani, West Bengal, India. The fish weighed 2.7 kg, 76.5 cm in length and 2.54 cm in eye diameter. Although distributed circumtropically and recorded from Indian coastal waters, D. hystrix is not harvested at present, as a part of commercial capture fishery. Scars and symptoms ensuring trawler net trap caused death of the specimen. This incident warrants for a strict vigil on fishing gear used in this part of Bay of Bengal so as to ensure death escape of non-target marine resources.     

A new species of the genus Cirrhimuraena (Anguilliformes: Ophichthidae) from the Bay of Bengal,India

A new species of the genus Cirrhimuraena (Anguilliformes: Ophichthidae), Cirrhimuraena indica sp. nov., is described based on eight specimens collected from the Paradip (Odisha) and Petuaghat harbours (West Bengal) along the Bay of Bengal. The species is distinct in having the upper jaw fringed with 16–17 cirri before posterior nostril and 4–5 in between the anterior and posterior nostrils on the side; dorsal fin originates above the level of gill opening, predorsal length is 9.3–10.9 in total length; the head is relatively large, the length is 9.3–9.8 in total length; no infraorbital pores are observed between the nostrils; teeth are numerous, small, conical and in bands on each jaw; pores are present before the gill opening 10–11 and before anus 47–48; pectoral-fin length is 2.4–2.8 in head length; predorsal vertebrae are 8–10, pre-anal vertebrae 43–47 and total vertebrae 164–169. In the maximum likelihood tree analysis for COI gene, the new species belongs to the same clade as the other congener of Cirrhimuraena chinensis and is separated from the species morphologically and genetically.     

云南澜沧江下游3种条鳅科鱼类中国新记录

澜沧江-湄公河作为一条国际河流,是全世界鱼类物种多样性最高的流域之一,其中中国境内澜沧江流域的条鳅科鱼类共记录37种,由于该类群分类鉴定较为困难,流域内仍存在未被发现、描述或准确鉴定的物种。2015至2019年,通过对云南省普洱市和西双版纳傣族自治州境内的澜沧江流域进行多次鱼类生物多样性调查,共发现3种未曾记录的条鳅科鱼类。对所采集到鱼类标本的重要性状进行测量,并与国内外相关文献进行形态特征比较,分别鉴定为长带条鳅（Nemacheilus longistriatus）、裸背南鳅（Schistura nudidorsum）和宽齿南鳅（S. latidens）,均为中国物种新记录;其中,由于以前在中国记录的条鳅属鱼类均已移入南鳅属（Schistura）,长带条鳅是目前中国分布的唯一条鳅属物种。本文对这3种新记录的条鳅科鱼类进行描述,对今后澜沧江条鳅科鱼类物种鉴定具有一定的指导意义,同时为澜沧江鱼类资源的调查和保护提供科学依据。     

中国水云科藻类的新记录

本文报道了中国分布的水云科(褐藻门)藻类3个新记录种,即束枝水云弯枝变种;笔头状水云;石鳖费氏藻。