Eyes of Deep Sea Crustaceans

Welsh, John H.; Chace, Fenner Albert

doi:10.2307/1537540

Cited by 34 publications

(11 citation statements)

References 19 publications

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“…Hemigrapsus sanguineus Nilsson, 1990 Gaten, present study Welsh & Chace, 1938 Land , 1976 Nilsson, 1983b Eguchi & Waterman, 1966 Nilsson, 1990 Nilsson, 1988…”

Section: Geryon Tridensmentioning

confidence: 57%

Optics and phylogeny: is there an insight? The evolution of superposition eyes in the Decapoda (Crustacea)

Gaten

1998

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This paper addresses the use of eye structure and optics in the construction of crustacean phylogenies and presents an hypothesis for the evolution of superposition eyes in the Decapoda, based on the distribution of eye types in extant decapod families. It is suggested that reflecting superposition optics are symplesiomorphic for the Decapoda, having evolved only once, probably in the Devonian. Subsequent loss of reflecting superposition optics has occurred following the adoption of a new habitat (e.g. Aristeidae, Aeglidae) or by progenetic paedomorphosis (Paguroidea, Eubrachyura).

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“…Hemigrapsus sanguineus Nilsson, 1990 Gaten, present study Welsh & Chace, 1938 Land , 1976 Nilsson, 1983b Eguchi & Waterman, 1966 Nilsson, 1990 Nilsson, 1988…”

Section: Geryon Tridensmentioning

confidence: 57%

Optics and phylogeny: is there an insight? The evolution of superposition eyes in the Decapoda (Crustacea)

Gaten

1998

CTOZ

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“…Interommatidial angles [48], [49], spectral sensitivity [50], [51] and visual acuity [52] also vary with depth in pelagic crustaceans. Some early studies reported the degeneration of eyes in deep water species [53], similar to those described in troglobitic species [54], whilst other deep water species possess well-developed fully functioning eyes [48], [49], [53], [55]–[57]. Vision is regarded as playing an important role for decapods in host/shelter location, predator detection [58], orientation [59], [60] and aggressive interactions between conspecifics [61], [62].…”

Section: Introductionmentioning

confidence: 91%

“…The accessory eye spot, ‘ocelli’, [67] or ‘dorsal spot’ and hereafter referred to as the nebenauge, is a collection of pigmented cells peculiar to caridean shrimps, but for which the function is unknown [46], [53], [67] and is integrated with or adjacent to the cornea [53], [67]. Histological examination of eyes from mesopelagic shrimp species suggests that the nebenauge could detect light [46].…”

Section: Introductionmentioning

confidence: 99%

Linking Eye Design with Host Symbiont Relationships in Pontoniine Shrimps (Crustacea, Decapoda, Palaemonidae)

2014

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Symbiosis is prevalent in the marine environment with many studies examining the effects of such interactions between host and symbiont. Pontoniine shrimps are a group whose ecology is characterised by symbiotic interactions. This investigation examines the gross morphology of Pontoniinae compound eyes and superficial optical parameters with reference to their symbiotic relationship or lifestyle category; free-living, ectosymbiont, endosymbiont (bivalves) or endosymbiont (non-bivalves). The eye morphologies of free-living and ectosymbiotic species are very similar, yet differ from both forms of endosymbiotic species. Endosymbionts have significantly smaller and simpler eyes with larger facets and bigger interommatidial angles and eye parameters for increased sensitivity levels. However bivalve endosymbionts form an intermediary group between non-bivalve endosymbionts and ectosymbionts as a result of their more active lifestyle. The accessory eye or “nebenauge”, although of uncertain function, commonly occurs in free-living Pontoniinae species but rarely in endosymbionts apart from in more primitive species. The variation in morphology reflects tensions between functional requirements and ecological pressures that have strongly influenced eye design in Pontoniinae.

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“…Consideration of eye design in many animals has shed light on the habits of difficult to observe species such as those found in the deep-sea realm or of a crepuscular or nocturnal habit (Marshall, 1979;Herring et al, 1990). Welsh & Chace (1937;1938) examined the eyes of pelagic crustaceans and noted little more than that their large size indicated that they must retain some important function. Hiller-Adams & Case (1984, 1985 carried out some more detailed interspecific comparisons of some euphausiids and benthic decapods eyes.…”

Section: Reviewing Manuscriptmentioning

confidence: 99%

Peer Review #3 of "External morphology of eyes and Nebenaugen of caridean decapods–ecological and systematic considerations (v0.1)"

Meyer-Rochow¹

2015

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Most caridean decapods have compound eyes of the reflecting superposition kind and some additionally possess an accessory eye-like organ of unknown function also referred to as the nebenauge. We examined 308 caridean genera to assess the general morphology of the eye, rostrum length, eye diameter and the presence or absence and, when present, the diameter of the nebenauge. We have attempted to relate these data to ecological and taxonomic considerations. We consider there to be 6 distinct eye types based on the margin between the eyestalk and cornea. The presence of nebenaugen appears to be generally linked to an active lifestyle, as evidenced by the fact that species that have nebenaugen tend to have larger eyes and are more likely to have a distinct rostrum. We suggest that the inconsistencies in its presence/absence under both systematic and ecological lenses may indicate that when present it has various roles relating to behavioural and physiological rhythms.

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Eyes of Deep Sea Crustaceans

Cited by 34 publications

References 19 publications

Optics and phylogeny: is there an insight? The evolution of superposition eyes in the Decapoda (Crustacea)

Optics and phylogeny: is there an insight? The evolution of superposition eyes in the Decapoda (Crustacea)

Linking Eye Design with Host Symbiont Relationships in Pontoniine Shrimps (Crustacea, Decapoda, Palaemonidae)

Peer Review #3 of "External morphology of eyes and Nebenaugen of caridean decapods–ecological and systematic considerations (v0.1)"

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