Untitled

Salman, Alp; Önsoy, Bahadır

doi:10.4194/trjfas.2010.0112

Cited by 8 publications

(1 citation statement)

References 5 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sepiolids tend to lay comparatively fewer and larger eggs than most other coleoid cephalopods (Rocha et al, 2001; Laptikhovsky et al, 2008; Squires et al, 2013). Fecundity in sepiolids has been recorded up to 646 eggs in captive southern dumpling squid, Euprymna tasmanica (Squires et al, 2013), and up to 931 eggs in R. macrosoma (Salman and Önsoy, 2010). Maternal care has not been reported among sepiolid taxa, but many female sepiolids are known to disguise their eggs with opaque egg casings, ink or sand (Arnold et al, 1972; Rodrigues et al, 2009; Squires et al, 2013), and to inoculate their eggs through the ANG (Collins et al, 2012).…”

Section: Reproductive Biology Of Cephalopodsmentioning

confidence: 99%

Tactical Tentacles: New Insights on the Processes of Sexual Selection Among the Cephalopoda

Morse

Huffard

2019

Front. Physiol.

View full text Add to dashboard Cite

The cephalopods (Mollusca: Cephalopoda) are an exceptional class among the invertebrates, characterised by the advanced development of their conditional learning abilities, long-term memories, capacity for rapid colour change and extremely adaptable hydrostatic skeletons. These traits enable cephalopods to occupy diverse marine ecological niches, become successful predators, employ sophisticated predator avoidance behaviours and have complex intraspecific interactions. Where studied, observations of cephalopod mating systems have revealed detailed insights to the life histories and behavioural ecologies of these animals. The reproductive biology of cephalopods is typified by high levels of both male and female promiscuity, alternative mating tactics, long-term sperm storage prior to spawning, and the capacity for intricate visual displays and/or use of a distinct sensory ecology. This review summarises the current understanding of cephalopod reproductive biology, and where investigated, how both pre-copulatory behaviours and post-copulatory fertilisation patterns can influence the processes of sexual selection. Overall, it is concluded that sperm competition and possibly cryptic female choice are likely to be critical determinants of which individuals' alleles get transferred to subsequent generations in cephalopod mating systems. Additionally, it is emphasised that the optimisation of offspring quality and/or fertilisation bias to genetically compatible males are necessary drivers for the proliferation of polyandry observed among cephalopods, and potential methods for testing these hypotheses are proposed within the conclusion of this review. Further gaps within the current knowledge of how sexual selection operates in this group are also highlighted, in the hopes of prompting new directions for research of the distinctive mating systems in this unique lineage.

show abstract

Section: Reproductive Biology Of Cephalopodsmentioning

confidence: 99%

Tactical Tentacles: New Insights on the Processes of Sexual Selection Among the Cephalopoda

Morse

Huffard

2019

Front. Physiol.

View full text Add to dashboard Cite

show abstract

Distribution and reproductive biology of the little cuttlefish Sepiola atlantica (Cephalopoda: Sepiolidae) around Anglesey, North Wales

Jones

Richardson

2011

Helgol Mar Res

View full text Add to dashboard Cite

Sepiola atlantica were captured in seine nets at twelve locations around the coast of Anglesey, UK. Animals were most abundant on the very sheltered shore of Y Foryd Bay and the wave-exposed shore of Traeth Penrhos, and these two locations were further sampled seasonally to examine the seasonal occurrence, population structure and reproductive biology of S. atlantica. Sepiola atlantica (5-28 mm dorsal mantle length (DML)) migrated inshore seasonally and Wrst appeared in July where they attained peak abundances between July and August at seawater temperatures of 17°C. Numbers declined between September and October as temperatures fell below 15-16°C, and in late October, they migrated oVshore. Male S. atlantica was signiWcantly smaller and matured at a smaller DML than females. The number of spermatangia on the bursa copulatrix of female S. atlantica varied seasonally attaining maximum numbers in October with a mean of 22 spermatangia on the bursa copulatrix of Y Foryd Bay females. At Y Foryd Bay and Traeth Penrhos, the number of spermatophores in male and potential fecundity in female S. atlantica ranged between 1 and 147 and 25 and 141, respectively. The spermatophoric complex and gonadosomatic index showed a high degree of variability in individuals of similar wet body weight with the female gonad constituting a far greater percentage of the total wet body weight than the male gonad. It is concluded that S. atlantica of all sizes and maturity stages congregate in the shallow waters around Anglesey between July and October when environmental conditions are favourable for enhanced growth and maturation and where the high numbers of animals enhance opportunities for mating.

show abstract

Cephalopoda (Siphonopoda)

El-Bawab

2020

Invertebrate Embryology and Reproduction

View full text Add to dashboard Cite

Untitled

Cited by 8 publications

References 5 publications

Tactical Tentacles: New Insights on the Processes of Sexual Selection Among the Cephalopoda

Tactical Tentacles: New Insights on the Processes of Sexual Selection Among the Cephalopoda

Distribution and reproductive biology of the little cuttlefish Sepiola atlantica (Cephalopoda: Sepiolidae) around Anglesey, North Wales

Cephalopoda (Siphonopoda)

Contact Info

Product

Resources

About