Mating behavior in three species of Pseudodiaptomus (Copepoda: Calanoida)

Jacoby, Charles A.; Youngbluth, Marsh J.

doi:10.1007/bf00393058

Cited by 65 publications

(56 citation statements)

References 18 publications

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“…Emergence during restricted periods of the night will limit exposure to predation, but it also increases the likelihood of contacting a mate. Copepods, amphipods, cumaceans, and other taxa may rely on this behavior to increase the relative concentrations of conspecific individuals and sexual pheromones in the water column (Katona 1973, Griffiths & Frost 1976, Lyes 1979, Jacoby & Youngbluth 1983. The correspondence observed between diel emergence patterns of both sexes in the same species during different seasons and lunar periods supports this hypothesis (Jacoby & Greenwood 1988, this study).…”

Section: Discussionsupporting

confidence: 70%

Emergent zooplankton in Moreton Bay, Queensland, Australia: seasonal, lunar, and diel patterns in emergence and distribution with respect to substrata

Jacoby¹,

Greenwood²

1989

Mar. Ecol. Prog. Ser.

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Section: Discussionsupporting

confidence: 70%

Emergent zooplankton in Moreton Bay, Queensland, Australia: seasonal, lunar, and diel patterns in emergence and distribution with respect to substrata

Jacoby¹,

Greenwood²

1989

Mar. Ecol. Prog. Ser.

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“…Multiple spermatophore attachments around the female genital opening have been reported for several calanoids (Fleminger, 1967;Hammer, 1978;Jacoby and Youngbluth, 1983). The related phenomena of dimorphism of spermatophore size and placement, and multiple spermatophore placements previously have been reported only for species of Euchaetidae.…”

Section: Resultsmentioning

confidence: 96%

“…Multiple placements during copulation have been reported for species of Pseudodiaptomus (Jacoby and Youngbluth, 1983). A further suggestion (Thomas E. Bowman, personal communication) should be explored: the more securely attached alternate spermatophores with long stalks may provide a mechanical barrier to amplexus, hindering later advances of competing males.…”

Section: Resultsmentioning

confidence: 99%

The Calanoid Copepod Euchaeta Antarctica from Southern Ocean Atlantic Sector Midwater Trawls, with Observations on Spermatophore Dimorphism

Ferrari

Dojiri

1987

Journal of Crustacean Biology

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Stage V amd VI copepodids of the predatory calanoid copepod Euchaeta antarctica were counted from Southern Ocean Atlantic Sector trawl samples collected during 9 months over a 5-year period. The proportion of CVI males to all CVI animals reached a maximum in June; the proportion of CVI males to total males reached a maximum in July. Two morphologically distinct kinds of spermatophores were attached to 2 different areas on the genital segment of females, and were correlated with 2 kinds of spermatophores held in leg 5 and contained within the bursa of different males. Possible adaptive significance of spermatophore dimorphism and placement for Euchaetidac is discussed and further studies are outlined.

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“…Selective mate-choice behavior is therefore expected to be an important component to individual fitness. Mate choice has been little studied in marine planktonic copepods, but early observations of interspecific and intergeneric mating attempts suggest that 'mating errors' do occur and may be significant in the reproductive ecology of marine species (Katona 1973, Jacoby & Youngbluth 1983.…”

Section: Introductionmentioning

confidence: 99%

Heterospecific mating and species recognition in the planktonic marine copepods Temora stylifera and T. longicornis

Goetze¹,

Kiørboe²

2008

Mar. Ecol. Prog. Ser.

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Many planktonic copepods use diffusible pheromone or hydromechanical signals to remotely detect the presence of potential mates. To determine whether these mating signals also play a role in species recognition and mate choice, we observed and video recorded (3D) mate-finding and pursuit behaviors in heterospecific and conspecific mating crosses in a pair of congeneric, partially sympatric species (Temora stylifera and T. longicornis) in the laboratory. The species appear to have asymmetrical pre-mating isolation, with T. longicornis males readily pursuing T. stylifera females to mate contact and capture, but with little mate-finding activity observed in the reverse cross. Males of T. longicornis pursuing heterospecific females executed a number of behaviors known to facilitate successful pheromone trail following and mate capture in conspecific mating, including accelerated swimming in a 'signal-scanning' mode to recover a lost pheromone trail, reversal of the tracking direction in cases when the male initiated tracking in the incorrect direction, and accelerated swimming speeds when in the presence of a pheromone signal but prior to locating the trail. Detailed analyses of mate-tracking behavior in T. longicornis male × T. stylifera female crosses gave no indication that males were aware they were pursuing heterospecific females prior to mate contact, indicating that diffusible pheromone and hydromechanical signals are not used, either singly or in combination, for species recognition in this mating pair. Heterospecific mating attempts among sympatric, congeneric copepods may commonly proceed to mate capture, and incur fitness costs to either or both mating partners. KEY WORDS: Mate choice · Behavioral isolation · Mating asymmetry · Diffusible pheromone · Hydromechanical signalsResale or republication not permitted without written consent of the publisher

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Mating behavior in three species of Pseudodiaptomus (Copepoda: Calanoida)

Cited by 65 publications

References 18 publications

Emergent zooplankton in Moreton Bay, Queensland, Australia: seasonal, lunar, and diel patterns in emergence and distribution with respect to substrata

Emergent zooplankton in Moreton Bay, Queensland, Australia: seasonal, lunar, and diel patterns in emergence and distribution with respect to substrata

The Calanoid Copepod Euchaeta Antarctica from Southern Ocean Atlantic Sector Midwater Trawls, with Observations on Spermatophore Dimorphism

Heterospecific mating and species recognition in the planktonic marine copepods Temora stylifera and T. longicornis

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