Growth Rates of Laboratory Reared Honduran Curly Hair Tarantulas (<i>Brachypelma albopilosum</i>) in Response to Power Feeding

Padilla, Mario; Colley, Mary Ann; Reading, Richard P.

doi:10.13156/arac.2017.17.7.325

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…However, we could not calculate activity for H. cerberea because only three out of 18 individuals (17%) moved. There is individual variation in the size at which individuals molt to maturity, so we included size as a continuous predictor of stage, in preference to a categorical predictor of stage ( Santana et al 2017 ; Padilla et al 2018 ). Therefore, in all models, the behavior (huddling, frequency of fang movements, frequency of climbs and activity) was the response variable, size was a continuous fixed effect, and spider identity (ID) was included as a random effect.…”

Section: Methodsmentioning

confidence: 99%

Exploring behavioral traits over different contexts in four species of Australian funnel-web spiders

2022

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Australian funnel-web spiders are arguably the most venomous spiders in the world, with much research focusing on this aspect of their biology. However, other aspects related to their life history, ecology and behaviour have been overlooked. For the first time, we assessed repeatability, namely risk-taking behaviour, aggressiveness and activity in the contexts of predation, conspecific tolerance and exploration of a new territory in four species of Australian funnel-web spiders: two are closely related, Hadronyche valida and H. infensa, and two have overlapping distributions but occupy different habitats, H. cerberea and Atrax robustus. We also compared behaviours between species. At the species level, we found that H. valida showed consistency in risk-taking behaviour when exposed to a predator stimulus, aggressiveness against conspecifics, and exploration of a new territory. In contrast, in the other species, only A. robustus showed repeatability in the context of exploration of a new territory. These results suggest that some behavioural traits are likely more flexible than others, and that the repeatability of behaviours may be species-specific in funnel-webs. When we compared species, we found differences in risk-taking behaviour and defensiveness. This study provides novel insights to understanding variation in behavioural traits within and between species of funnel-web spiders, suggesting that some behavioural traits are likely context- and/or species-dependent, as a result of their evolutionary history. These findings provide key insights for understanding the ecological role of behaviour and venom deployment in venomous animals, and a greater understanding of behaviour in these medically significantly and iconic spiders that are of conservation concern.

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Section: Methodsmentioning

confidence: 99%

Exploring behavioral traits over different contexts in four species of Australian funnel-web spiders

2022

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“…Much information about theraphosids, can be found both in classical (e.g., Simon 1864;Comstock 1980;Breene et al 1996 among others) and in recent literature (Foelix 2011;Pérez-Miles 2020) of which, however, there are few published scientific works focused on life expectancy. It is demonstrated that tarantula species are very long-lived, with females that can live for 30 years or more (Costa & Pérez-Miles 2002;Criscuolo et al 2010;Montes de Oca et al 2016), always 3-4 years more than males that usually live until mating (Foelix 2011;Padilla et al 2018). Males present a shorter lifespan compared to females (Pérez-Miles & Perafán 2020).…”

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confidence: 99%

On the life expectancy of a male Chilean rose tarantula, Grammostola rosea(Walckenaer, 1837) (Araneae: Theraphosidae) reared in captivity

Cortés-Fossati

Martín-Rodríguez²

2022

RCHE

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Here we present the case of a male Chilean rose tarantula Grammostola rosea (Walckenaer, 1837) (Araneae: Theraphosidae) reared in captivity, whose life expectancy has been dated at 8.5 years. The specimen spent the last three as an adult. Both records are outside the average range of lifespan expected for an adult male. The specimen was kept under natural conditions in a Mediterranean climate, without photoperiod or temperature control. Diet was composed of Tenebrio molitor larvae and Gryllus sp./Acheta sp. nymphs and adults. The feeding regime was 1-2 prey per week in the early stages and later 1 prey every 20 days since the individual exceeded 15 mm body length approximately, to his death. The specimen spent most of its adult life without eating, actively refusing prey. The maximum time without eating was 22 months. At the time of death, the specimen measured 35 mm in body length and 130 with leg expanded. Previous research reported lower life expectancies in male tarantulas. More research on understudied lifecycle aspects of the Theraphosidae is needed.

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Spiders

Pizzi¹,

Kennedy²

2021

Invertebrate Medicine

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Growth Rates of Laboratory Reared Honduran Curly Hair Tarantulas (Brachypelma albopilosum) in Response to Power Feeding

Cited by 4 publications

References 7 publications

Exploring behavioral traits over different contexts in four species of Australian funnel-web spiders

Exploring behavioral traits over different contexts in four species of Australian funnel-web spiders

On the life expectancy of a male Chilean rose tarantula, Grammostola rosea(Walckenaer, 1837) (Araneae: Theraphosidae) reared in captivity

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