Belgian Journal of Zoology最新文献

Spawning migration and habitat characteristics of Labeobarbus species in the Gumara River and its tributaries, Lake Tana subbasin, Ethiopia 埃塞俄比亚塔纳湖次流域古马拉河及其支流中 Labeobarbus 种类的产卵迁移和栖息地特征

IF 1.3 4区生物学

Belgian Journal of Zoology Pub Date : 2024-07-09 DOI: 10.26496/bjz.2024.183

W. Zelalem, M. Mingist, W. Anteneh, M. Kibret, E. Adgo, Jan Nyssen, E. Verleyen, Alain De Vocht

{"title":"Spawning migration and habitat characteristics of Labeobarbus species in the Gumara River and its tributaries, Lake Tana subbasin, Ethiopia","authors":"W. Zelalem, M. Mingist, W. Anteneh, M. Kibret, E. Adgo, Jan Nyssen, E. Verleyen, Alain De Vocht","doi":"10.26496/bjz.2024.183","DOIUrl":"https://doi.org/10.26496/bjz.2024.183","url":null,"abstract":"Information on the spawning migration and habitat use of migratory fish is critical to protect and restore threatened or endangered populations. Twenty-two individuals of three species, namely Labeobarbus platydorsus, L. megastoma, and L. truttiformis, were implanted with radio tags to study their spawning migration in the Gumara River and its tributaries between July and October of 2018 to 2021. Fourteen individuals were found at least twice throughout their migration, eleven moved upstream up to 41.0 and 44.4 river kilometers (rkm), and three were tracked when moving downstream. The upstream spawning movement of the tagged fish lasted 9 to 27 days, and their ground speeds ranged from 0.07 to 1.50 km h-1. The habitat use of untagged Labeobarbus specimens in the spawning sites was also assessed using fyke nets, cast net fishing, and data from fishermen’s catches. Labeobarbus truttiformis mainly exploited the Kizen tributary stream with gravel substrates and less turbid water for spawning. Several small-sized individuals of L. megastoma spawned in the Wonzuma and Dukalit tributaries. By contrast, larger-sized specimens of L. platydorsus and L. megastoma spawned in the main river channel at the riffles and the gravel/pebble size substrate. Destructive fishing using gillnet dragging, filtering, and damming/fencing has recently intensified at the spawning areas (~ 41.0 rkm to 45.0 rkm), which likely affects spawning populations. Therefore, we recommend that fishing in the main river channel and tributaries must be banned during the months of August, September, and October to safeguard and conserve the threatened Labeobarbus species.","PeriodicalId":8750,"journal":{"name":"Belgian Journal of Zoology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141665129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the mechanical stability of the air volume trapped within the diving bell of the water spider Argyroneta aquatica (Araneae;Cybaeidae); a thermodynamic analysis based on a model 水蜘蛛（Araneae;Cybaeidae）潜水钟内滞留气量的机械稳定性；基于模型的热力学分析

IF 1 4区生物学

Belgian Journal of Zoology Pub Date : 2024-03-25 DOI: 10.26496/bjz.2010.177

D. Woermann

引用次数: 3

Food Composition of the Little Owl Athene noctua in Farmland Areas of South East Poland 波兰东南部农田地区小猫头鹰 Athene noctua 的食物组成

IF 1 4区生物学

Belgian Journal of Zoology Pub Date : 2024-03-25 DOI: 10.26496/bjz.2010.169

I. Kitowski, K. Pawlęga

引用次数: 11

The development of chicken cerebellar cortex and the determination of AgNOR activity of the Purkinje cell nuclei 鸡小脑皮层的发育和浦肯野细胞核 AgNOR 活性的测定

IF 1 4区生物学

Belgian Journal of Zoology Pub Date : 2024-03-25 DOI: 10.26496/bjz.2010.171

Serdar Akar, E. Sur

引用次数: 13

New records of sessile rotifers (Phylum Rotifera: Flosculariacea, Collothecacea) from Southeast Asia 东南亚无柄轮虫（轮虫纲：轮虫目，轮虫科）的新记录

IF 1 4区生物学

Belgian Journal of Zoology Pub Date : 2024-03-25 DOI: 10.26496/bjz.2010.174

H. Segers, Phuripong Meksuwan, L. Sanoamuang

引用次数: 11

Efficiency of live trapping protocols to assess small mammal diversity in tropical rainforests of Sri Lanka 评估斯里兰卡热带雨林小型哺乳动物多样性的活体诱捕规程的效率

IF 1 4区生物学

Belgian Journal of Zoology Pub Date : 2024-03-25 DOI: 10.26496/bjz.2010.170

M. Wijesinghe

{"title":"Efficiency of live trapping protocols to assess small mammal diversity in tropical rainforests of Sri Lanka","authors":"M. Wijesinghe","doi":"10.26496/bjz.2010.170","DOIUrl":"https://doi.org/10.26496/bjz.2010.170","url":null,"abstract":"Live trapping is used extensively for small mammal studies in both temperate and tropical ecosystems. The effectiveness of such studies is dependent on several factors. This paper attempts to investigate how one of these factors, namely the trapping intensity, affects the assessment of species richness and abundance of small mammals in rainforest ecosystems in southwest Sri Lanka. Eight-day live trapping surveys were conducted in seven selected forests yielding a total of 5600 trap days with a total of 186 individuals belonging to nine species being captured. It was evident that, using 100 traps with a trap density of 140 traps per ha, over 90% of the species recorded from each of the seven forests were captured within the initial four days of live trapping after which the rate of capture of new species sharply declined. The results also show that the more common species were captured sooner than the more rare ones. Considering these trends, a four-day trapping protocol could be recommended to broadly compare small mammal communities between forests or habitat types. The number of individuals captured, on the other hand, probably attracted by the bait, increased as trapping progressed; this very likely leads to overestimation of species abundance. Since such projects in developing countries are subject to budgetary constraints, costs incurred are also addressed.","PeriodicalId":8750,"journal":{"name":"Belgian Journal of Zoology","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Genetic diversity in see-see partridge (Ammoperdix griseogularis, Galliformes) populations from sub-Himalayan Mountain ranges of Pakistan 巴基斯坦次喜马拉雅山脉鹧鸪（Ammoperdix griseogularis，瘿形目）种群的遗传多样性

IF 1 4区生物学

Belgian Journal of Zoology Pub Date : 2024-03-25 DOI: 10.26496/bjz.2010.173

Imran Khaliq, Muhammad Hussnain Babar, M. Riaz, A. Khan

{"title":"Genetic diversity in see-see partridge (Ammoperdix griseogularis, Galliformes) populations from sub-Himalayan Mountain ranges of Pakistan","authors":"Imran Khaliq, Muhammad Hussnain Babar, M. Riaz, A. Khan","doi":"10.26496/bjz.2010.173","DOIUrl":"https://doi.org/10.26496/bjz.2010.173","url":null,"abstract":"We used Random Amplified Polymorphic DNA (RAPD) markers to investigate the genetic structure of two populations of see-see partridge (Ammoperdix griseogularis, Galliformes) from the Suleiman range, in the Pakistani Himalayan region. The see-see partridge is a vulnerable species with a distribution in the Middle East and central Asia. The percentage of polymorphic bands (94.05%), Shannon Index (H = 0.455) and Nei’s average gene diversity (I = 0.298) of A. griseogularis at species level were rather high when compared with other avian species. 17% of polymorphic loci showed statistically significant differences in their allelic frequencies. The G (Nei’s coefficient of genetic variation) values indicated low levels of differentiation (G = 0.08). A genetic distance D of 0.05 indicated that both populations were to some degree in isolation but their differentiation was not significant. Overall, our genetic data can support action plans aiming to locally preserve differentiated genetic resources that, in the future, could potentially result in ecologically and behaviourally differentiated populations. In view of the rapid environmental changes that the Himalayan region has been experiencing in the last decade, this study could help in conservation plans.","PeriodicalId":8750,"journal":{"name":"Belgian Journal of Zoology","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140382843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Derivation of variance estimators and statistical inference for indices of sexual size dimorphism: an example 性体型畸变指数的方差估计值推导和统计推论：一个例子

IF 1 4区生物学

Belgian Journal of Zoology Pub Date : 2024-03-25 DOI: 10.26496/bjz.2010.175

S. Nemes, T. Hartel

引用次数: 0

Habitat use by the endangered Lesser Grey Shrike Lanius minor in Central Romania 罗马尼亚中部濒危小灰鵙（Lanius minor）对栖息地的利用

IF 1 4区生物学

Belgian Journal of Zoology Pub Date : 2024-03-25 DOI: 10.26496/bjz.2010.172

C. Moga, T. Hartel, K. Öllerer, Á. Szapanyos

引用次数: 8

First record of Synurella ambulans (Müller 1846) (Amphipoda: Crangonictidae) in Belgium 比利时首次记录到 Synurella ambulans (Müller 1846) (Amphipoda: Crangonictidae)

IF 1 4区生物学

Belgian Journal of Zoology Pub Date : 2024-03-25 DOI: 10.26496/bjz.2010.176

P. Boets, K. Lock, P. Goethals

引用次数: 9