Alternative Reproductive Tactics in the Shell-Brooding Lake Tanganyika Cichlid<i>Neolamprologus brevis</i>

Ota, Kazutaka; Aibara, Mitsuto; Morita, Masaya; Awata, Satoshi; Hori, Michio; Kohda, Masanori

doi:10.1155/2012/193235

Cited by 6 publications

(4 citation statements)

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“…It is possible that, in the case of the arowana, the females choose the bigger males, since larger individuals have larger mouth cavities (and more space to shelter the broods) and better physical condition to defend the offspring (Queiroz, 2008). In that sense, smaller young males can use the tactic of a sneaker as a way to find reproductive success immediately upon maturity as described in several species of fishes (e.g., Ota et al, 2012;Largiadèr et al, 2001;Jones et al, 2001;Gross & Charnov, 1980). The most intriguing result found in the current study was the complete lack of a genetic relationship between males and fry in two of the broods analyzed (N10 and N32).…”

Section: Paternity Analysissupporting

confidence: 55%

“…This male can take advantage of the moments in which the couple is involved in oviposition and fertilization to deposit its spermatozoa and fertilize some oocytes, leaving the eggs to be cared for by the other male. This behavior has been described in the Gasterosteidae (Largiàder et al, 2001), Cichlidae (Ota et al, 2012) and Gobiidae (Mobley et al, 2009). The role of paternal care can evolve in species with higher certainty of paternity, even in the occurrence of opportunist males (Ah-King et al, 2004).…”

Section: Paternity Analysismentioning

confidence: 81%

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Evidence of multiple paternity and cooperative parental care in the so called monogamous silver arowana Osteoglossum bicirrhosum (Osteoglossiformes: Osteoglossidae)

et al. 2014

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Monogamy is rare in fishes and is usually associated with elaborate parental care. When parental care is present in fishes, it is usually the male that is responsible, and it is believed that there is a relationship between the high energetic investment and the certainty of paternity (except in the case of sneaker males). Osteoglossum bicirrhosum is considered a monogamous fish, and has particular behavioral traits that permit the study of mating systems and parental care, such as male mouthbrooding. We investigated the genetic relationships of males with the broods found in their oral cavities in Osteoglossum samples collected in a natural environment in the lower Purus river basin, Amazonas, Brazil. Fourteen broods were analyzed for parentage (268 young and 14 adult males) using eight microsatellite loci. The results indicate that eleven broods show a monogamous system. In one brood, however, approximately 50% of the young were genetically compatible with being offspring of another male, and in another two broods, none of the subsampled young were compatible with the genotypes of the brooding male. The result of this first brood may be explained by the extra-parental contribution of a sneaker male, whereas cooperative parental care may explain the result in the other two broods.Monogamia é rara em peixes e está geralmente associada a cuidado parental elaborado. Quando cuidado parental está presente em peixes, usualmente o macho é responsável, e acredita-se que exista uma relação entre investimento energético elevado e a certeza da paternidade (exceto no caso de machos oportunistas). Osteoglossum bicirrhosum é considerado monogâmico e possui determinadas características comportamentais que permitem o estudo de sistemas de acasalamento e cuidado parental, como incubação bucal dos ovos e filhotes pelos machos. Quatorze ninhadas (268 filhotes e 14 machos adultos) foram coletadas em ambiente natural na bacia do baixo rio Purus, Amazonas, Brasil e analisadas para parentesco utilizando oito loci de microssatélites. Os resultados sugeriram, para onze ninhadas, um sistema de acasalamento monogâmico. Em uma ninhada, no entanto, cerca de 50% dos jovens eram geneticamente compatíveis como sendo descendentes de outro macho, e em outras duas ninhadas nenhum dos filhotes amostrados eram filhos dos machos que estavam realizando o cuidado. O resultado da primeira ninhada pode ser explicado pela contribuição extra-par de um macho oportunista, enquanto que o cuidado parental cooperativo pode explicar os resultados nas outras duas ninhadas.

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Section: Paternity Analysissupporting

confidence: 55%

Section: Paternity Analysismentioning

confidence: 81%

Evidence of multiple paternity and cooperative parental care in the so called monogamous silver arowana Osteoglossum bicirrhosum (Osteoglossiformes: Osteoglossidae)

et al. 2014

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“…Aside from their close phylogenetic relatedness, these dwarf species are also very similar in terms of their ecology. All 15 species known exclusively use fossilised shells of the genus Neothauma for shelter from predators and brood chambers; all face similar predators, predominantly from the related genus Lepidiolamprologus; all have overlapping dietary niches, although some feed benthically and some from the water column (Ota et al 2012); all are morphologically similar (i.e. they are small) as a consequence of needing to be able to enter shells; all practice some level of paternal care by fanning oxygen into the shell thus ventilating the eggs until these hatches and subsequently defending offspring from being eaten; and all occur at similar depth ranges, often on vast shell beds, and many are found syntopically in mosaic communities.…”

Section: Phylogeny and The Evolution Of Socialitymentioning

confidence: 99%

Cichlids as a Model System for Studying Social Behaviour and Evolution

Jordan

Taborsky

2021

The Behavior, Ecology and Evolution of Cichlid Fishes

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The complex social behaviour of cichlids has fascinated scientists and hobbyists alike for almost 100 years. In this chapter, we review the breadth and complexity of cichlid behaviour, particularly with respect to social interactions. We present the case that cichlids are one of the best model systems for understanding both the mechanisms and evolution of behaviour. This is due to the fact that cichlids can be observed without being greatly disturbed, both in the aquarium and ଏeld and because of the unique opportunity to experimentally manipulate their environment and behaviour. We ଏrst give a brief account of the diversity of social systems in the cichlids and the diverse research in this area, from the very early work of authors like Curtis, Noble, and Baerends, to modern studies into the dynamics and structure of social behaviour in these ଏsh. In Sect. 2, we explore the causal factors leading to the evolution of social complexity, discussing the occurrence and evolution of different social systems across ecological and life-history contexts. We investigate the behavioural complexity displayed by cichlids in Sect. 3, including a brief treatment of the different modalities of behavioural interactions. In Sect. 4, we discuss the immense potential for using cichlids as model species in studying social and behavioural evolution, before ending in Sect. 5 with exciting future directions for research employing the latest technical advances in both the laboratory and ଏeld.

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“…3. Mouth Brooding Fish Algorithm [23] The term "True Negative," sometimes abbreviated as "TN," refers to the outcome that accurately identifies the number of negative instances that have been properly classified. Likewise, the acronym "TP" denotes True Positive, indicating the ratio of accurately recognized positive instances.…”

Section: B Evaluation Criteriamentioning

confidence: 99%

Comparative Study: Mouth Brooding Fish (MBF) as a Novel Approach for Android Malware Detection

Zhou,

Wang,

2024

ijacsa

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Android Malware Detection has become increasingly prevalent, with the highest market share among all other mobile operating systems due to its open-source nature and user-friendliness. This has resulted in an uncontrolled proliferation of malicious applications targeting the Android platform. Emerging trends of Android malware are employing highly sophisticated detection and analysis evasion techniques, rendering traditional signature-based detection methods less effective in identifying modern and unknown malware.Alternative approaches, such as Machine Learning methods, have emerged as leading solutions for timely zero-day anomaly detection. Ensemble learning, a common meta-approach in machine learning, seeks to improve predictive performance by amalgamating predictions from multiple models. This paper introduces an enhanced strategy, Mouth Brooding Fish (MBF), based on ensemble learning for Android Malware Detection (AMD). The findings are further compared with the outputs of various algorithms including Support Vector Machine (SVM), AdaBoost, Multilayer Perceptron (MLP), Gaussian Kernel (GK), and Random Forest (RF). Compared to the other selected models, MBF exhibits remarkable performance with an F-score of 98.57%, precision of 99.65%, sensitivity of 97.51%, and specificity of 97.51%. Thus, the significant novelty of this work lies in the accuracy and authenticity of the selected algorithms, demonstrating their superior performance overall.

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Alternative Reproductive Tactics in the Shell-Brooding Lake Tanganyika CichlidNeolamprologus brevis

Cited by 6 publications

References 46 publications

Evidence of multiple paternity and cooperative parental care in the so called monogamous silver arowana Osteoglossum bicirrhosum (Osteoglossiformes: Osteoglossidae)

Evidence of multiple paternity and cooperative parental care in the so called monogamous silver arowana Osteoglossum bicirrhosum (Osteoglossiformes: Osteoglossidae)

Cichlids as a Model System for Studying Social Behaviour and Evolution

Comparative Study: Mouth Brooding Fish (MBF) as a Novel Approach for Android Malware Detection

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